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test_fixers.py
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""" Test suite for the fixer modules """ # Python imports import os import unittest from itertools import chain from operator import itemgetter # Local imports from lib2to3 import pygram, pytree, refactor, fixer_util from lib2to3.tests import support class FixerTestCase(support.TestCase): # Other test cases can subclass this class and replace "fixer_pkg" with # their own. def setUp(self, fix_list=None, fixer_pkg="lib2to3", options=None): if fix_list is None: fix_list = [self.fixer] self.refactor = support.get_refactorer(fixer_pkg, fix_list, options) self.fixer_log = [] self.filename = "<string>" for fixer in chain(self.refactor.pre_order, self.refactor.post_order): fixer.log = self.fixer_log def _check(self, before, after): before = support.reformat(before) after = support.reformat(after) tree = self.refactor.refactor_string(before, self.filename) self.assertEqual(after, str(tree)) return tree def check(self, before, after, ignore_warnings=False): tree = self._check(before, after) self.assertTrue(tree.was_changed) if not ignore_warnings: self.assertEqual(self.fixer_log, []) def warns(self, before, after, message, unchanged=False): tree = self._check(before, after) self.assertIn(message, "".join(self.fixer_log)) if not unchanged: self.assertTrue(tree.was_changed) def warns_unchanged(self, before, message): self.warns(before, before, message, unchanged=True) def unchanged(self, before, ignore_warnings=False): self._check(before, before) if not ignore_warnings: self.assertEqual(self.fixer_log, []) def assert_runs_after(self, *names): fixes = [self.fixer] fixes.extend(names) r = support.get_refactorer("lib2to3", fixes) (pre, post) = r.get_fixers() n = "fix_" + self.fixer if post and post[-1].__class__.__module__.endswith(n): # We're the last fixer to run return if pre and pre[-1].__class__.__module__.endswith(n) and not post: # We're the last in pre and post is empty return self.fail("Fixer run order (%s) is incorrect; %s should be last."\ %(", ".join([x.__class__.__module__ for x in (pre+post)]), n)) class Test_ne(FixerTestCase): fixer = "ne" def test_basic(self): b = """if x <> y: pass""" a = """if x != y: pass""" self.check(b, a) def test_no_spaces(self): b = """if x<>y: pass""" a = """if x!=y: pass""" self.check(b, a) def test_chained(self): b = """if x<>y<>z: pass""" a = """if x!=y!=z: pass""" self.check(b, a) class Test_has_key(FixerTestCase): fixer = "has_key" def test_1(self): b = """x = d.has_key("x") or d.has_key("y")""" a = """x = "x" in d or "y" in d""" self.check(b, a) def test_2(self): b = """x = a.b.c.d.has_key("x") ** 3""" a = """x = ("x" in a.b.c.d) ** 3""" self.check(b, a) def test_3(self): b = """x = a.b.has_key(1 + 2).__repr__()""" a = """x = (1 + 2 in a.b).__repr__()""" self.check(b, a) def test_4(self): b = """x = a.b.has_key(1 + 2).__repr__() ** -3 ** 4""" a = """x = (1 + 2 in a.b).__repr__() ** -3 ** 4""" self.check(b, a) def test_5(self): b = """x = a.has_key(f or g)""" a = """x = (f or g) in a""" self.check(b, a) def test_6(self): b = """x = a + b.has_key(c)""" a = """x = a + (c in b)""" self.check(b, a) def test_7(self): b = """x = a.has_key(lambda: 12)""" a = """x = (lambda: 12) in a""" self.check(b, a) def test_8(self): b = """x = a.has_key(a for a in b)""" a = """x = (a for a in b) in a""" self.check(b, a) def test_9(self): b = """if not a.has_key(b): pass""" a = """if b not in a: pass""" self.check(b, a) def test_10(self): b = """if not a.has_key(b).__repr__(): pass""" a = """if not (b in a).__repr__(): pass""" self.check(b, a) def test_11(self): b = """if not a.has_key(b) ** 2: pass""" a = """if not (b in a) ** 2: pass""" self.check(b, a) class Test_apply(FixerTestCase): fixer = "apply" def test_1(self): b = """x = apply(f, g + h)""" a = """x = f(*g + h)""" self.check(b, a) def test_2(self): b = """y = apply(f, g, h)""" a = """y = f(*g, **h)""" self.check(b, a) def test_3(self): b = """z = apply(fs[0], g or h, h or g)""" a = """z = fs[0](*g or h, **h or g)""" self.check(b, a) def test_4(self): b = """apply(f, (x, y) + t)""" a = """f(*(x, y) + t)""" self.check(b, a) def test_5(self): b = """apply(f, args,)""" a = """f(*args)""" self.check(b, a) def test_6(self): b = """apply(f, args, kwds,)""" a = """f(*args, **kwds)""" self.check(b, a) # Test that complex functions are parenthesized def test_complex_1(self): b = """x = apply(f+g, args)""" a = """x = (f+g)(*args)""" self.check(b, a) def test_complex_2(self): b = """x = apply(f*g, args)""" a = """x = (f*g)(*args)""" self.check(b, a) def test_complex_3(self): b = """x = apply(f**g, args)""" a = """x = (f**g)(*args)""" self.check(b, a) # But dotted names etc. not def test_dotted_name(self): b = """x = apply(f.g, args)""" a = """x = f.g(*args)""" self.check(b, a) def test_subscript(self): b = """x = apply(f[x], args)""" a = """x = f[x](*args)""" self.check(b, a) def test_call(self): b = """x = apply(f(), args)""" a = """x = f()(*args)""" self.check(b, a) # Extreme case def test_extreme(self): b = """x = apply(a.b.c.d.e.f, args, kwds)""" a = """x = a.b.c.d.e.f(*args, **kwds)""" self.check(b, a) # XXX Comments in weird places still get lost def test_weird_comments(self): b = """apply( # foo f, # bar args)""" a = """f(*args)""" self.check(b, a) # These should *not* be touched def test_unchanged_1(self): s = """apply()""" self.unchanged(s) def test_unchanged_2(self): s = """apply(f)""" self.unchanged(s) def test_unchanged_3(self): s = """apply(f,)""" self.unchanged(s) def test_unchanged_4(self): s = """apply(f, args, kwds, extras)""" self.unchanged(s) def test_unchanged_5(self): s = """apply(f, *args, **kwds)""" self.unchanged(s) def test_unchanged_6(self): s = """apply(f, *args)""" self.unchanged(s) def test_unchanged_6b(self): s = """apply(f, **kwds)""" self.unchanged(s) def test_unchanged_7(self): s = """apply(func=f, args=args, kwds=kwds)""" self.unchanged(s) def test_unchanged_8(self): s = """apply(f, args=args, kwds=kwds)""" self.unchanged(s) def test_unchanged_9(self): s = """apply(f, args, kwds=kwds)""" self.unchanged(s) def test_space_1(self): a = """apply( f, args, kwds)""" b = """f(*args, **kwds)""" self.check(a, b) def test_space_2(self): a = """apply( f ,args,kwds )""" b = """f(*args, **kwds)""" self.check(a, b) class Test_reload(FixerTestCase): fixer = "reload" def test(self): b = """reload(a)""" a = """import imp\nimp.reload(a)""" self.check(b, a) def test_comment(self): b = """reload( a ) # comment""" a = """import imp\nimp.reload( a ) # comment""" self.check(b, a) # PEP 8 comments b = """reload( a ) # comment""" a = """import imp\nimp.reload( a ) # comment""" self.check(b, a) def test_space(self): b = """reload( a )""" a = """import imp\nimp.reload( a )""" self.check(b, a) b = """reload( a)""" a = """import imp\nimp.reload( a)""" self.check(b, a) b = """reload(a )""" a = """import imp\nimp.reload(a )""" self.check(b, a) def test_unchanged(self): s = """reload(a=1)""" self.unchanged(s) s = """reload(f, g)""" self.unchanged(s) s = """reload(f, *h)""" self.unchanged(s) s = """reload(f, *h, **i)""" self.unchanged(s) s = """reload(f, **i)""" self.unchanged(s) s = """reload(*h, **i)""" self.unchanged(s) s = """reload(*h)""" self.unchanged(s) s = """reload(**i)""" self.unchanged(s) s = """reload()""" self.unchanged(s) class Test_intern(FixerTestCase): fixer = "intern" def test_prefix_preservation(self): b = """x = intern( a )""" a = """import sys\nx = sys.intern( a )""" self.check(b, a) b = """y = intern("b" # test )""" a = """import sys\ny = sys.intern("b" # test )""" self.check(b, a) b = """z = intern(a+b+c.d, )""" a = """import sys\nz = sys.intern(a+b+c.d, )""" self.check(b, a) def test(self): b = """x = intern(a)""" a = """import sys\nx = sys.intern(a)""" self.check(b, a) b = """z = intern(a+b+c.d,)""" a = """import sys\nz = sys.intern(a+b+c.d,)""" self.check(b, a) b = """intern("y%s" % 5).replace("y", "")""" a = """import sys\nsys.intern("y%s" % 5).replace("y", "")""" self.check(b, a) # These should not be refactored def test_unchanged(self): s = """intern(a=1)""" self.unchanged(s) s = """intern(f, g)""" self.unchanged(s) s = """intern(*h)""" self.unchanged(s) s = """intern(**i)""" self.unchanged(s) s = """intern()""" self.unchanged(s) class Test_reduce(FixerTestCase): fixer = "reduce" def test_simple_call(self): b = "reduce(a, b, c)" a = "from functools import reduce\nreduce(a, b, c)" self.check(b, a) def test_bug_7253(self): # fix_tuple_params was being bad and orphaning nodes in the tree. b = "def x(arg): reduce(sum, [])" a = "from functools import reduce\ndef x(arg): reduce(sum, [])" self.check(b, a) def test_call_with_lambda(self): b = "reduce(lambda x, y: x + y, seq)" a = "from functools import reduce\nreduce(lambda x, y: x + y, seq)" self.check(b, a) def test_unchanged(self): s = "reduce(a)" self.unchanged(s) s = "reduce(a, b=42)" self.unchanged(s) s = "reduce(a, b, c, d)" self.unchanged(s) s = "reduce(**c)" self.unchanged(s) s = "reduce()" self.unchanged(s) class Test_print(FixerTestCase): fixer = "print" def test_prefix_preservation(self): b = """print 1, 1+1, 1+1+1""" a = """print(1, 1+1, 1+1+1)""" self.check(b, a) def test_idempotency(self): s = """print()""" self.unchanged(s) s = """print('')""" self.unchanged(s) def test_idempotency_print_as_function(self): self.refactor.driver.grammar = pygram.python_grammar_no_print_statement s = """print(1, 1+1, 1+1+1)""" self.unchanged(s) s = """print()""" self.unchanged(s) s = """print('')""" self.unchanged(s) def test_1(self): b = """print 1, 1+1, 1+1+1""" a = """print(1, 1+1, 1+1+1)""" self.check(b, a) def test_2(self): b = """print 1, 2""" a = """print(1, 2)""" self.check(b, a) def test_3(self): b = """print""" a = """print()""" self.check(b, a) def test_4(self): # from bug 3000 b = """print whatever; print""" a = """print(whatever); print()""" self.check(b, a) def test_5(self): b = """print; print whatever;""" a = """print(); print(whatever);""" self.check(b, a) def test_tuple(self): b = """print (a, b, c)""" a = """print((a, b, c))""" self.check(b, a) # trailing commas def test_trailing_comma_1(self): b = """print 1, 2, 3,""" a = """print(1, 2, 3, end=' ')""" self.check(b, a) def test_trailing_comma_2(self): b = """print 1, 2,""" a = """print(1, 2, end=' ')""" self.check(b, a) def test_trailing_comma_3(self): b = """print 1,""" a = """print(1, end=' ')""" self.check(b, a) # >> stuff def test_vargs_without_trailing_comma(self): b = """print >>sys.stderr, 1, 2, 3""" a = """print(1, 2, 3, file=sys.stderr)""" self.check(b, a) def test_with_trailing_comma(self): b = """print >>sys.stderr, 1, 2,""" a = """print(1, 2, end=' ', file=sys.stderr)""" self.check(b, a) def test_no_trailing_comma(self): b = """print >>sys.stderr, 1+1""" a = """print(1+1, file=sys.stderr)""" self.check(b, a) def test_spaces_before_file(self): b = """print >> sys.stderr""" a = """print(file=sys.stderr)""" self.check(b, a) def test_with_future_print_function(self): s = "from __future__ import print_function\n" \ "print('Hai!', end=' ')" self.unchanged(s) b = "print 'Hello, world!'" a = "print('Hello, world!')" self.check(b, a) class Test_exec(FixerTestCase): fixer = "exec" def test_prefix_preservation(self): b = """ exec code in ns1, ns2""" a = """ exec(code, ns1, ns2)""" self.check(b, a) def test_basic(self): b = """exec code""" a = """exec(code)""" self.check(b, a) def test_with_globals(self): b = """exec code in ns""" a = """exec(code, ns)""" self.check(b, a) def test_with_globals_locals(self): b = """exec code in ns1, ns2""" a = """exec(code, ns1, ns2)""" self.check(b, a) def test_complex_1(self): b = """exec (a.b()) in ns""" a = """exec((a.b()), ns)""" self.check(b, a) def test_complex_2(self): b = """exec a.b() + c in ns""" a = """exec(a.b() + c, ns)""" self.check(b, a) # These should not be touched def test_unchanged_1(self): s = """exec(code)""" self.unchanged(s) def test_unchanged_2(self): s = """exec (code)""" self.unchanged(s) def test_unchanged_3(self): s = """exec(code, ns)""" self.unchanged(s) def test_unchanged_4(self): s = """exec(code, ns1, ns2)""" self.unchanged(s) class Test_repr(FixerTestCase): fixer = "repr" def test_prefix_preservation(self): b = """x = `1 + 2`""" a = """x = repr(1 + 2)""" self.check(b, a) def test_simple_1(self): b = """x = `1 + 2`""" a = """x = repr(1 + 2)""" self.check(b, a) def test_simple_2(self): b = """y = `x`""" a = """y = repr(x)""" self.check(b, a) def test_complex(self): b = """z = `y`.__repr__()""" a = """z = repr(y).__repr__()""" self.check(b, a) def test_tuple(self): b = """x = `1, 2, 3`""" a = """x = repr((1, 2, 3))""" self.check(b, a) def test_nested(self): b = """x = `1 + `2``""" a = """x = repr(1 + repr(2))""" self.check(b, a) def test_nested_tuples(self): b = """x = `1, 2 + `3, 4``""" a = """x = repr((1, 2 + repr((3, 4))))""" self.check(b, a) class Test_except(FixerTestCase): fixer = "except" def test_prefix_preservation(self): b = """ try: pass except (RuntimeError, ImportError), e: pass""" a = """ try: pass except (RuntimeError, ImportError) as e: pass""" self.check(b, a) def test_simple(self): b = """ try: pass except Foo, e: pass""" a = """ try: pass except Foo as e: pass""" self.check(b, a) def test_simple_no_space_before_target(self): b = """ try: pass except Foo,e: pass""" a = """ try: pass except Foo as e: pass""" self.check(b, a) def test_tuple_unpack(self): b = """ def foo(): try: pass except Exception, (f, e): pass except ImportError, e: pass""" a = """ def foo(): try: pass except Exception as xxx_todo_changeme: (f, e) = xxx_todo_changeme.args pass except ImportError as e: pass""" self.check(b, a) def test_multi_class(self): b = """ try: pass except (RuntimeError, ImportError), e: pass""" a = """ try: pass except (RuntimeError, ImportError) as e: pass""" self.check(b, a) def test_list_unpack(self): b = """ try: pass except Exception, [a, b]: pass""" a = """ try: pass except Exception as xxx_todo_changeme: [a, b] = xxx_todo_changeme.args pass""" self.check(b, a) def test_weird_target_1(self): b = """ try: pass except Exception, d[5]: pass""" a = """ try: pass except Exception as xxx_todo_changeme: d[5] = xxx_todo_changeme pass""" self.check(b, a) def test_weird_target_2(self): b = """ try: pass except Exception, a.foo: pass""" a = """ try: pass except Exception as xxx_todo_changeme: a.foo = xxx_todo_changeme pass""" self.check(b, a) def test_weird_target_3(self): b = """ try: pass except Exception, a().foo: pass""" a = """ try: pass except Exception as xxx_todo_changeme: a().foo = xxx_todo_changeme pass""" self.check(b, a) def test_bare_except(self): b = """ try: pass except Exception, a: pass except: pass""" a = """ try: pass except Exception as a: pass except: pass""" self.check(b, a) def test_bare_except_and_else_finally(self): b = """ try: pass except Exception, a: pass except: pass else: pass finally: pass""" a = """ try: pass except Exception as a: pass except: pass else: pass finally: pass""" self.check(b, a) def test_multi_fixed_excepts_before_bare_except(self): b = """ try: pass except TypeError, b: pass except Exception, a: pass except: pass""" a = """ try: pass except TypeError as b: pass except Exception as a: pass except: pass""" self.check(b, a) def test_one_line_suites(self): b = """ try: raise TypeError except TypeError, e: pass """ a = """ try: raise TypeError except TypeError as e: pass """ self.check(b, a) b = """ try: raise TypeError except TypeError, e: pass """ a = """ try: raise TypeError except TypeError as e: pass """ self.check(b, a) b = """ try: raise TypeError except TypeError, e: pass """ a = """ try: raise TypeError except TypeError as e: pass """ self.check(b, a) b = """ try: raise TypeError except TypeError, e: pass else: function() finally: done() """ a = """ try: raise TypeError except TypeError as e: pass else: function() finally: done() """ self.check(b, a) # These should not be touched: def test_unchanged_1(self): s = """ try: pass except: pass""" self.unchanged(s) def test_unchanged_2(self): s = """ try: pass except Exception: pass""" self.unchanged(s) def test_unchanged_3(self): s = """ try: pass except (Exception, SystemExit): pass""" self.unchanged(s) class Test_raise(FixerTestCase): fixer = "raise" def test_basic(self): b = """raise Exception, 5""" a = """raise Exception(5)""" self.check(b, a) def test_prefix_preservation(self): b = """raise Exception,5""" a = """raise Exception(5)""" self.check(b, a) b = """raise Exception, 5""" a = """raise Exception(5)""" self.check(b, a) def test_with_comments(self): b = """raise Exception, 5 # foo""" a = """raise Exception(5) # foo""" self.check(b, a) b = """raise E, (5, 6) % (a, b) # foo""" a = """raise E((5, 6) % (a, b)) # foo""" self.check(b, a) b = """def foo(): raise Exception, 5, 6 # foo""" a = """def foo(): raise Exception(5).with_traceback(6) # foo""" self.check(b, a) def test_None_value(self): b = """raise Exception(5), None, tb""" a = """raise Exception(5).with_traceback(tb)""" self.check(b, a) def test_tuple_value(self): b = """raise Exception, (5, 6, 7)""" a = """raise Exception(5, 6, 7)""" self.check(b, a) def test_tuple_detection(self): b = """raise E, (5, 6) % (a, b)""" a = """raise E((5, 6) % (a, b))""" self.check(b, a) def test_tuple_exc_1(self): b = """raise (((E1, E2), E3), E4), V""" a = """raise E1(V)""" self.check(b, a) def test_tuple_exc_2(self): b = """raise (E1, (E2, E3), E4), V""" a = """raise E1(V)""" self.check(b, a) # These should produce a warning def test_string_exc(self): s = """raise 'foo'""" self.warns_unchanged(s, "Python 3 does not support string exceptions") def test_string_exc_val(self): s = """raise "foo", 5""" self.warns_unchanged(s, "Python 3 does not support string exceptions") def test_string_exc_val_tb(self): s = """raise "foo", 5, 6""" self.warns_unchanged(s, "Python 3 does not support string exceptions") # These should result in traceback-assignment def test_tb_1(self): b = """def foo(): raise Exception, 5, 6""" a = """def foo(): raise Exception(5).with_traceback(6)""" self.check(b, a) def test_tb_2(self): b = """def foo(): a = 5 raise Exception, 5, 6 b = 6""" a = """def foo(): a = 5 raise Exception(5).with_traceback(6) b = 6""" self.check(b, a) def test_tb_3(self): b = """def foo(): raise Exception,5,6""" a = """def foo(): raise Exception(5).with_traceback(6)""" self.check(b, a) def test_tb_4(self): b = """def foo(): a = 5 raise Exception,5,6 b = 6""" a = """def foo(): a = 5 raise Exception(5).with_traceback(6) b = 6""" self.check(b, a) def test_tb_5(self): b = """def foo(): raise Exception, (5, 6, 7), 6""" a = """def foo(): raise Exception(5, 6, 7).with_traceback(6)""" self.check(b, a) def test_tb_6(self): b = """def foo(): a = 5 raise Exception, (5, 6, 7), 6 b = 6""" a = """def foo(): a = 5 raise Exception(5, 6, 7).with_traceback(6) b = 6""" self.check(b, a) class Test_throw(FixerTestCase): fixer = "throw" def test_1(self): b = """g.throw(Exception, 5)""" a = """g.throw(Exception(5))""" self.check(b, a) def test_2(self): b = """g.throw(Exception,5)""" a = """g.throw(Exception(5))""" self.check(b, a) def test_3(self): b = """g.throw(Exception, (5, 6, 7))""" a = """g.throw(Exception(5, 6, 7))""" self.check(b, a) def test_4(self): b = """5 + g.throw(Exception, 5)""" a = """5 + g.throw(Exception(5))""" self.check(b, a) # These should produce warnings def test_warn_1(self): s = """g.throw("foo")""" self.warns_unchanged(s, "Python 3 does not support string exceptions") def test_warn_2(self): s = """g.throw("foo", 5)""" self.warns_unchanged(s, "Python 3 does not support string exceptions") def test_warn_3(self): s = """g.throw("foo", 5, 6)""" self.warns_unchanged(s, "Python 3 does not support string exceptions") # These should not be touched def test_untouched_1(self): s = """g.throw(Exception)""" self.unchanged(s) def test_untouched_2(self): s = """g.throw(Exception(5, 6))""" self.unchanged(s) def test_untouched_3(self): s = """5 + g.throw(Exception(5, 6))""" self.unchanged(s) # These should result in traceback-assignment def test_tb_1(self): b = """def foo(): g.throw(Exception, 5, 6)""" a = """def foo(): g.throw(Exception(5).with_traceback(6))""" self.check(b, a) def test_tb_2(self): b = """def foo(): a = 5 g.throw(Exception, 5, 6) b = 6""" a = """def foo(): a = 5 g.throw(Exception(5).with_traceback(6)) b = 6""" self.check(b, a) def test_tb_3(self): b = """def foo(): g.throw(Exception,5,6)""" a = """def foo(): g.throw(Exception(5).with_traceback(6))""" self.check(b, a) def test_tb_4(self): b = """def foo(): a = 5 g.throw(Exception,5,6) b = 6""" a = """def foo(): a = 5 g.throw(Exception(5).with_traceback(6)) b = 6""" self.check(b, a) def test_tb_5(self): b = """def foo(): g.throw(Exception, (5, 6, 7), 6)""" a = """def foo(): g.throw(Exception(5, 6, 7).with_traceback(6))""" self.check(b, a) def test_tb_6(self): b = """def foo(): a = 5 g.throw(Exception, (5, 6, 7), 6) b = 6""" a = """def foo(): a = 5 g.throw(Exception(5, 6, 7).with_traceback(6)) b = 6""" self.check(b, a) def test_tb_7(self): b = """def foo(): a + g.throw(Exception, 5, 6)""" a = """def foo(): a + g.throw(Exception(5).with_traceback(6))""" self.check(b, a) def test_tb_8(self): b = """def foo(): a = 5 a + g.throw(Exception, 5, 6) b = 6""" a = """def foo(): a = 5 a + g.throw(Exception(5).with_traceback(6)) b = 6""" self.check(b, a) class Test_long(FixerTestCase): fixer = "long" def test_1(self): b = """x = long(x)""" a = """x = int(x)""" self.check(b, a) def test_2(self): b = """y = isinstance(x, long)""" a = """y = isinstance(x, int)""" self.check(b, a) def test_3(self): b = """z = type(x) in (int, long)""" a = """z = type(x) in (int, int)""" self.check(b, a) def test_unchanged(self): s = """long = True""" self.unchanged(s) s = """s.long = True""" self.unchanged(s) s = """def long(): pass""" self.unchanged(s) s = """class long(): pass""" self.unchanged(s) s = """def f(long): pass""" self.unchanged(s) s = """def f(g, long): pass""" self.unchanged(s) s = """def f(x, long=True): pass""" self.unchanged(s) def test_prefix_preservation(self): b = """x = long( x )""" a = """x = int( x )""" self.check(b, a) class Test_execfile(FixerTestCase): fixer = "execfile" def test_conversion(self): b = """execfile("fn")""" a = """exec(compile(open("fn").read(), "fn", 'exec'))""" self.check(b, a) b = """execfile("fn", glob)""" a = """exec(compile(open("fn").read(), "fn", 'exec'), glob)""" self.check(b, a) b = """execfile("fn", glob, loc)""" a = """exec(compile(open("fn").read(), "fn", 'exec'), glob, loc)""" self.check(b, a) b = """execfile("fn", globals=glob)""" a = """exec(compile(open("fn").read(), "fn", 'exec'), globals=glob)""" self.check(b, a) b = """execfile("fn", locals=loc)""" a = """exec(compile(open("fn").read(), "fn", 'exec'), locals=loc)""" self.check(b, a) b = """execfile("fn", globals=glob, locals=loc)""" a = """exec(compile(open("fn").read(), "fn", 'exec'), globals=glob, locals=loc)""" self.check(b, a) def test_spacing(self): b = """execfile( "fn" )""" a = """exec(compile(open( "fn" ).read(), "fn", 'exec'))""" self.check(b, a) b = """execfile("fn", globals = glob)""" a = """exec(compile(open("fn").read(), "fn", 'exec'), globals = glob)""" self.check(b, a) class Test_isinstance(FixerTestCase): fixer = "isinstance" def test_remove_multiple_items(self): b = """isinstance(x, (int, int, int))""" a = """isinstance(x, int)""" self.check(b, a) b = """isinstance(x, (int, float, int, int, float))""" a = """isinstance(x, (int, float))""" self.check(b, a) b = """isinstance(x, (int, float, int, int, float, str))""" a = """isinstance(x, (int, float, str))""" self.check(b, a) b = """isinstance(foo() + bar(), (x(), y(), x(), int, int))""" a = """isinstance(foo() + bar(), (x(), y(), x(), int))""" self.check(b, a) def test_prefix_preservation(self): b = """if isinstance( foo(), ( bar, bar, baz )) : pass""" a = """if isinstance( foo(), ( bar, baz )) : pass""" self.check(b, a) def test_unchanged(self): self.unchanged("isinstance(x, (str, int))") class Test_dict(FixerTestCase): fixer = "dict" def test_prefix_preservation(self): b = "if d. keys ( ) : pass" a = "if list(d. keys ( )) : pass" self.check(b, a) b = "if d. items ( ) : pass" a = "if list(d. items ( )) : pass" self.check(b, a) b = "if d. iterkeys ( ) : pass" a = "if iter(d. keys ( )) : pass" self.check(b, a) b = "[i for i in d. iterkeys( ) ]" a = "[i for i in d. keys( ) ]" self.check(b, a) b = "if d. viewkeys ( ) : pass" a = "if d. keys ( ) : pass" self.check(b, a) b = "[i for i in d. viewkeys( ) ]" a = "[i for i in d. keys( ) ]" self.check(b, a) def test_trailing_comment(self): b = "d.keys() # foo" a = "list(d.keys()) # foo" self.check(b, a) b = "d.items() # foo" a = "list(d.items()) # foo" self.check(b, a) b = "d.iterkeys() # foo" a = "iter(d.keys()) # foo" self.check(b, a) b = """[i for i in d.iterkeys() # foo ]""" a = """[i for i in d.keys() # foo ]""" self.check(b, a) b = """[i for i in d.iterkeys() # foo ]""" a = """[i for i in d.keys() # foo ]""" self.check(b, a) b = "d.viewitems() # foo" a = "d.items() # foo" self.check(b, a) def test_unchanged(self): for wrapper in fixer_util.consuming_calls: s = "s = %s(d.keys())" % wrapper self.unchanged(s) s = "s = %s(d.values())" % wrapper self.unchanged(s) s = "s = %s(d.items())" % wrapper self.unchanged(s) def test_01(self): b = "d.keys()" a = "list(d.keys())" self.check(b, a) b = "a[0].foo().keys()" a = "list(a[0].foo().keys())" self.check(b, a) def test_02(self): b = "d.items()" a = "list(d.items())" self.check(b, a) def test_03(self): b = "d.values()" a = "list(d.values())" self.check(b, a) def test_04(self): b = "d.iterkeys()" a = "iter(d.keys())" self.check(b, a) def test_05(self): b = "d.iteritems()" a = "iter(d.items())" self.check(b, a) def test_06(self): b = "d.itervalues()" a = "iter(d.values())" self.check(b, a) def test_07(self): s = "list(d.keys())" self.unchanged(s) def test_08(self): s = "sorted(d.keys())" self.unchanged(s) def test_09(self): b = "iter(d.keys())" a = "iter(list(d.keys()))" self.check(b, a) def test_10(self): b = "foo(d.keys())" a = "foo(list(d.keys()))" self.check(b, a) def test_11(self): b = "for i in d.keys(): print i" a = "for i in list(d.keys()): print i" self.check(b, a) def test_12(self): b = "for i in d.iterkeys(): print i" a = "for i in d.keys(): print i" self.check(b, a) def test_13(self): b = "[i for i in d.keys()]" a = "[i for i in list(d.keys())]" self.check(b, a) def test_14(self): b = "[i for i in d.iterkeys()]" a = "[i for i in d.keys()]" self.check(b, a) def test_15(self): b = "(i for i in d.keys())" a = "(i for i in list(d.keys()))" self.check(b, a) def test_16(self): b = "(i for i in d.iterkeys())" a = "(i for i in d.keys())" self.check(b, a) def test_17(self): b = "iter(d.iterkeys())" a = "iter(d.keys())" self.check(b, a) def test_18(self): b = "list(d.iterkeys())" a = "list(d.keys())" self.check(b, a) def test_19(self): b = "sorted(d.iterkeys())" a = "sorted(d.keys())" self.check(b, a) def test_20(self): b = "foo(d.iterkeys())" a = "foo(iter(d.keys()))" self.check(b, a) def test_21(self): b = "print h.iterkeys().next()" a = "print iter(h.keys()).next()" self.check(b, a) def test_22(self): b = "print h.keys()[0]" a = "print list(h.keys())[0]" self.check(b, a) def test_23(self): b = "print list(h.iterkeys().next())" a = "print list(iter(h.keys()).next())" self.check(b, a) def test_24(self): b = "for x in h.keys()[0]: print x" a = "for x in list(h.keys())[0]: print x" self.check(b, a) def test_25(self): b = "d.viewkeys()" a = "d.keys()" self.check(b, a) def test_26(self): b = "d.viewitems()" a = "d.items()" self.check(b, a) def test_27(self): b = "d.viewvalues()" a = "d.values()" self.check(b, a) def test_28(self): b = "[i for i in d.viewkeys()]" a = "[i for i in d.keys()]" self.check(b, a) def test_29(self): b = "(i for i in d.viewkeys())" a = "(i for i in d.keys())" self.check(b, a) def test_30(self): b = "iter(d.viewkeys())" a = "iter(d.keys())" self.check(b, a) def test_31(self): b = "list(d.viewkeys())" a = "list(d.keys())" self.check(b, a) def test_32(self): b = "sorted(d.viewkeys())" a = "sorted(d.keys())" self.check(b, a) class Test_xrange(FixerTestCase): fixer = "xrange" def test_prefix_preservation(self): b = """x = xrange( 10 )""" a = """x = range( 10 )""" self.check(b, a) b = """x = xrange( 1 , 10 )""" a = """x = range( 1 , 10 )""" self.check(b, a) b = """x = xrange( 0 , 10 , 2 )""" a = """x = range( 0 , 10 , 2 )""" self.check(b, a) def test_single_arg(self): b = """x = xrange(10)""" a = """x = range(10)""" self.check(b, a) def test_two_args(self): b = """x = xrange(1, 10)""" a = """x = range(1, 10)""" self.check(b, a) def test_three_args(self): b = """x = xrange(0, 10, 2)""" a = """x = range(0, 10, 2)""" self.check(b, a) def test_wrap_in_list(self): b = """x = range(10, 3, 9)""" a = """x = list(range(10, 3, 9))""" self.check(b, a) b = """x = foo(range(10, 3, 9))""" a = """x = foo(list(range(10, 3, 9)))""" self.check(b, a) b = """x = range(10, 3, 9) + [4]""" a = """x = list(range(10, 3, 9)) + [4]""" self.check(b, a) b = """x = range(10)[::-1]""" a = """x = list(range(10))[::-1]""" self.check(b, a) b = """x = range(10) [3]""" a = """x = list(range(10)) [3]""" self.check(b, a) def test_xrange_in_for(self): b = """for i in xrange(10):\n j=i""" a = """for i in range(10):\n j=i""" self.check(b, a) b = """[i for i in xrange(10)]""" a = """[i for i in range(10)]""" self.check(b, a) def test_range_in_for(self): self.unchanged("for i in range(10): pass") self.unchanged("[i for i in range(10)]") def test_in_contains_test(self): self.unchanged("x in range(10, 3, 9)") def test_in_consuming_context(self): for call in fixer_util.consuming_calls: self.unchanged("a = %s(range(10))" % call) class Test_xrange_with_reduce(FixerTestCase): def setUp(self): super(Test_xrange_with_reduce, self).setUp(["xrange", "reduce"]) def test_double_transform(self): b = """reduce(x, xrange(5))""" a = """from functools import reduce reduce(x, range(5))""" self.check(b, a) class Test_raw_input(FixerTestCase): fixer = "raw_input" def test_prefix_preservation(self): b = """x = raw_input( )""" a = """x = input( )""" self.check(b, a) b = """x = raw_input( '' )""" a = """x = input( '' )""" self.check(b, a) def test_1(self): b = """x = raw_input()""" a = """x = input()""" self.check(b, a) def test_2(self): b = """x = raw_input('')""" a = """x = input('')""" self.check(b, a) def test_3(self): b = """x = raw_input('prompt')""" a = """x = input('prompt')""" self.check(b, a) def test_4(self): b = """x = raw_input(foo(a) + 6)""" a = """x = input(foo(a) + 6)""" self.check(b, a) def test_5(self): b = """x = raw_input(invite).split()""" a = """x = input(invite).split()""" self.check(b, a) def test_6(self): b = """x = raw_input(invite) . split ()""" a = """x = input(invite) . split ()""" self.check(b, a) def test_8(self): b = "x = int(raw_input())" a = "x = int(input())" self.check(b, a) class Test_funcattrs(FixerTestCase): fixer = "funcattrs" attrs = ["closure", "doc", "name", "defaults", "code", "globals", "dict"] def test(self): for attr in self.attrs: b = "a.func_%s" % attr a = "a.__%s__" % attr self.check(b, a) b = "self.foo.func_%s.foo_bar" % attr a = "self.foo.__%s__.foo_bar" % attr self.check(b, a) def test_unchanged(self): for attr in self.attrs: s = "foo(func_%s + 5)" % attr self.unchanged(s) s = "f(foo.__%s__)" % attr self.unchanged(s) s = "f(foo.__%s__.foo)" % attr self.unchanged(s) class Test_xreadlines(FixerTestCase): fixer = "xreadlines" def test_call(self): b = "for x in f.xreadlines(): pass" a = "for x in f: pass" self.check(b, a) b = "for x in foo().xreadlines(): pass" a = "for x in foo(): pass" self.check(b, a) b = "for x in (5 + foo()).xreadlines(): pass" a = "for x in (5 + foo()): pass" self.check(b, a) def test_attr_ref(self): b = "foo(f.xreadlines + 5)" a = "foo(f.__iter__ + 5)" self.check(b, a) b = "foo(f().xreadlines + 5)" a = "foo(f().__iter__ + 5)" self.check(b, a) b = "foo((5 + f()).xreadlines + 5)" a = "foo((5 + f()).__iter__ + 5)" self.check(b, a) def test_unchanged(self): s = "for x in f.xreadlines(5): pass" self.unchanged(s) s = "for x in f.xreadlines(k=5): pass" self.unchanged(s) s = "for x in f.xreadlines(*k, **v): pass" self.unchanged(s) s = "foo(xreadlines)" self.unchanged(s) class ImportsFixerTests: def test_import_module(self): for old, new in self.modules.items(): b = "import %s" % old a = "import %s" % new self.check(b, a) b = "import foo, %s, bar" % old a = "import foo, %s, bar" % new self.check(b, a) def test_import_from(self): for old, new in self.modules.items(): b = "from %s import foo" % old a = "from %s import foo" % new self.check(b, a) b = "from %s import foo, bar" % old a = "from %s import foo, bar" % new self.check(b, a) b = "from %s import (yes, no)" % old a = "from %s import (yes, no)" % new self.check(b, a) def test_import_module_as(self): for old, new in self.modules.items(): b = "import %s as foo_bar" % old a = "import %s as foo_bar" % new self.check(b, a) b = "import %s as foo_bar" % old a = "import %s as foo_bar" % new self.check(b, a) def test_import_from_as(self): for old, new in self.modules.items(): b = "from %s import foo as bar" % old a = "from %s import foo as bar" % new self.check(b, a) def test_star(self): for old, new in self.modules.items(): b = "from %s import *" % old a = "from %s import *" % new self.check(b, a) def test_import_module_usage(self): for old, new in self.modules.items(): b = """ import %s foo(%s.bar) """ % (old, old) a = """ import %s foo(%s.bar) """ % (new, new) self.check(b, a) b = """ from %s import x %s = 23 """ % (old, old) a = """ from %s import x %s = 23 """ % (new, old) self.check(b, a) s = """ def f(): %s.method() """ % (old,) self.unchanged(s) # test nested usage b = """ import %s %s.bar(%s.foo) """ % (old, old, old) a = """ import %s %s.bar(%s.foo) """ % (new, new, new) self.check(b, a) b = """ import %s x.%s """ % (old, old) a = """ import %s x.%s """ % (new, old) self.check(b, a) class Test_imports(FixerTestCase, ImportsFixerTests): fixer = "imports" from ..fixes.fix_imports import MAPPING as modules def test_multiple_imports(self): b = """import urlparse, cStringIO""" a = """import urllib.parse, io""" self.check(b, a) def test_multiple_imports_as(self): b = """ import copy_reg as bar, HTMLParser as foo, urlparse s = urlparse.spam(bar.foo()) """ a = """ import copyreg as bar, html.parser as foo, urllib.parse s = urllib.parse.spam(bar.foo()) """ self.check(b, a) class Test_imports2(FixerTestCase, ImportsFixerTests): fixer = "imports2" from ..fixes.fix_imports2 import MAPPING as modules class Test_imports_fixer_order(FixerTestCase, ImportsFixerTests): def setUp(self): super(Test_imports_fixer_order, self).setUp(['imports', 'imports2']) from ..fixes.fix_imports2 import MAPPING as mapping2 self.modules = mapping2.copy() from ..fixes.fix_imports import MAPPING as mapping1 for key in ('dbhash', 'dumbdbm', 'dbm', 'gdbm'): self.modules[key] = mapping1[key] def test_after_local_imports_refactoring(self): for fix in ("imports", "imports2"): self.fixer = fix self.assert_runs_after("import") class Test_urllib(FixerTestCase): fixer = "urllib" from ..fixes.fix_urllib import MAPPING as modules def test_import_module(self): for old, changes in self.modules.items(): b = "import %s" % old a = "import %s" % ", ".join(map(itemgetter(0), changes)) self.check(b, a) def test_import_from(self): for old, changes in self.modules.items(): all_members = [] for new, members in changes: for member in members: all_members.append(member) b = "from %s import %s" % (old, member) a = "from %s import %s" % (new, member) self.check(b, a) s = "from foo import %s" % member self.unchanged(s) b = "from %s import %s" % (old, ", ".join(members)) a = "from %s import %s" % (new, ", ".join(members)) self.check(b, a) s = "from foo import %s" % ", ".join(members) self.unchanged(s) # test the breaking of a module into multiple replacements b = "from %s import %s" % (old, ", ".join(all_members)) a = "\n".join(["from %s import %s" % (new, ", ".join(members)) for (new, members) in changes]) self.check(b, a) def test_import_module_as(self): for old in self.modules: s = "import %s as foo" % old self.warns_unchanged(s, "This module is now multiple modules") def test_import_from_as(self): for old, changes in self.modules.items(): for new, members in changes: for member in members: b = "from %s import %s as foo_bar" % (old, member) a = "from %s import %s as foo_bar" % (new, member) self.check(b, a) b = "from %s import %s as blah, %s" % (old, member, member) a = "from %s import %s as blah, %s" % (new, member, member) self.check(b, a) def test_star(self): for old in self.modules: s = "from %s import *" % old self.warns_unchanged(s, "Cannot handle star imports") def test_indented(self): b = """ def foo(): from urllib import urlencode, urlopen """ a = """ def foo(): from urllib.parse import urlencode from urllib.request import urlopen """ self.check(b, a) b = """ def foo(): other() from urllib import urlencode, urlopen """ a = """ def foo(): other() from urllib.parse import urlencode from urllib.request import urlopen """ self.check(b, a) def test_import_module_usage(self): for old, changes in self.modules.items(): for new, members in changes: for member in members: new_import = ", ".join([n for (n, mems) in self.modules[old]]) b = """ import %s foo(%s.%s) """ % (old, old, member) a = """ import %s foo(%s.%s) """ % (new_import, new, member) self.check(b, a) b = """ import %s %s.%s(%s.%s) """ % (old, old, member, old, member) a = """ import %s %s.%s(%s.%s) """ % (new_import, new, member, new, member) self.check(b, a) class Test_input(FixerTestCase): fixer = "input" def test_prefix_preservation(self): b = """x = input( )""" a = """x = eval(input( ))""" self.check(b, a) b = """x = input( '' )""" a = """x = eval(input( '' ))""" self.check(b, a) def test_trailing_comment(self): b = """x = input() # foo""" a = """x = eval(input()) # foo""" self.check(b, a) def test_idempotency(self): s = """x = eval(input())""" self.unchanged(s) s = """x = eval(input(''))""" self.unchanged(s) s = """x = eval(input(foo(5) + 9))""" self.unchanged(s) def test_1(self): b = """x = input()""" a = """x = eval(input())""" self.check(b, a) def test_2(self): b = """x = input('')""" a = """x = eval(input(''))""" self.check(b, a) def test_3(self): b = """x = input('prompt')""" a = """x = eval(input('prompt'))""" self.check(b, a) def test_4(self): b = """x = input(foo(5) + 9)""" a = """x = eval(input(foo(5) + 9))""" self.check(b, a) class Test_tuple_params(FixerTestCase): fixer = "tuple_params" def test_unchanged_1(self): s = """def foo(): pass""" self.unchanged(s) def test_unchanged_2(self): s = """def foo(a, b, c): pass""" self.unchanged(s) def test_unchanged_3(self): s = """def foo(a=3, b=4, c=5): pass""" self.unchanged(s) def test_1(self): b = """ def foo(((a, b), c)): x = 5""" a = """ def foo(xxx_todo_changeme): ((a, b), c) = xxx_todo_changeme x = 5""" self.check(b, a) def test_2(self): b = """ def foo(((a, b), c), d): x = 5""" a = """ def foo(xxx_todo_changeme, d): ((a, b), c) = xxx_todo_changeme x = 5""" self.check(b, a) def test_3(self): b = """ def foo(((a, b), c), d) -> e: x = 5""" a = """ def foo(xxx_todo_changeme, d) -> e: ((a, b), c) = xxx_todo_changeme x = 5""" self.check(b, a) def test_semicolon(self): b = """ def foo(((a, b), c)): x = 5; y = 7""" a = """ def foo(xxx_todo_changeme): ((a, b), c) = xxx_todo_changeme; x = 5; y = 7""" self.check(b, a) def test_keywords(self): b = """ def foo(((a, b), c), d, e=5) -> z: x = 5""" a = """ def foo(xxx_todo_changeme, d, e=5) -> z: ((a, b), c) = xxx_todo_changeme x = 5""" self.check(b, a) def test_varargs(self): b = """ def foo(((a, b), c), d, *vargs, **kwargs) -> z: x = 5""" a = """ def foo(xxx_todo_changeme, d, *vargs, **kwargs) -> z: ((a, b), c) = xxx_todo_changeme x = 5""" self.check(b, a) def test_multi_1(self): b = """ def foo(((a, b), c), (d, e, f)) -> z: x = 5""" a = """ def foo(xxx_todo_changeme, xxx_todo_changeme1) -> z: ((a, b), c) = xxx_todo_changeme (d, e, f) = xxx_todo_changeme1 x = 5""" self.check(b, a) def test_multi_2(self): b = """ def foo(x, ((a, b), c), d, (e, f, g), y) -> z: x = 5""" a = """ def foo(x, xxx_todo_changeme, d, xxx_todo_changeme1, y) -> z: ((a, b), c) = xxx_todo_changeme (e, f, g) = xxx_todo_changeme1 x = 5""" self.check(b, a) def test_docstring(self): b = """ def foo(((a, b), c), (d, e, f)) -> z: "foo foo foo foo" x = 5""" a = """ def foo(xxx_todo_changeme, xxx_todo_changeme1) -> z: "foo foo foo foo" ((a, b), c) = xxx_todo_changeme (d, e, f) = xxx_todo_changeme1 x = 5""" self.check(b, a) def test_lambda_no_change(self): s = """lambda x: x + 5""" self.unchanged(s) def test_lambda_parens_single_arg(self): b = """lambda (x): x + 5""" a = """lambda x: x + 5""" self.check(b, a) b = """lambda(x): x + 5""" a = """lambda x: x + 5""" self.check(b, a) b = """lambda ((((x)))): x + 5""" a = """lambda x: x + 5""" self.check(b, a) b = """lambda((((x)))): x + 5""" a = """lambda x: x + 5""" self.check(b, a) def test_lambda_simple(self): b = """lambda (x, y): x + f(y)""" a = """lambda x_y: x_y[0] + f(x_y[1])""" self.check(b, a) b = """lambda(x, y): x + f(y)""" a = """lambda x_y: x_y[0] + f(x_y[1])""" self.check(b, a) b = """lambda (((x, y))): x + f(y)""" a = """lambda x_y: x_y[0] + f(x_y[1])""" self.check(b, a) b = """lambda(((x, y))): x + f(y)""" a = """lambda x_y: x_y[0] + f(x_y[1])""" self.check(b, a) def test_lambda_one_tuple(self): b = """lambda (x,): x + f(x)""" a = """lambda x1: x1[0] + f(x1[0])""" self.check(b, a) b = """lambda (((x,))): x + f(x)""" a = """lambda x1: x1[0] + f(x1[0])""" self.check(b, a) def test_lambda_simple_multi_use(self): b = """lambda (x, y): x + x + f(x) + x""" a = """lambda x_y: x_y[0] + x_y[0] + f(x_y[0]) + x_y[0]""" self.check(b, a) def test_lambda_simple_reverse(self): b = """lambda (x, y): y + x""" a = """lambda x_y: x_y[1] + x_y[0]""" self.check(b, a) def test_lambda_nested(self): b = """lambda (x, (y, z)): x + y + z""" a = """lambda x_y_z: x_y_z[0] + x_y_z[1][0] + x_y_z[1][1]""" self.check(b, a) b = """lambda (((x, (y, z)))): x + y + z""" a = """lambda x_y_z: x_y_z[0] + x_y_z[1][0] + x_y_z[1][1]""" self.check(b, a) def test_lambda_nested_multi_use(self): b = """lambda (x, (y, z)): x + y + f(y)""" a = """lambda x_y_z: x_y_z[0] + x_y_z[1][0] + f(x_y_z[1][0])""" self.check(b, a) class Test_methodattrs(FixerTestCase): fixer = "methodattrs" attrs = ["func", "self", "class"] def test(self): for attr in self.attrs: b = "a.im_%s" % attr if attr == "class": a = "a.__self__.__class__" else: a = "a.__%s__" % attr self.check(b, a) b = "self.foo.im_%s.foo_bar" % attr if attr == "class": a = "self.foo.__self__.__class__.foo_bar" else: a = "self.foo.__%s__.foo_bar" % attr self.check(b, a) def test_unchanged(self): for attr in self.attrs: s = "foo(im_%s + 5)" % attr self.unchanged(s) s = "f(foo.__%s__)" % attr self.unchanged(s) s = "f(foo.__%s__.foo)" % attr self.unchanged(s) class Test_next(FixerTestCase): fixer = "next" def test_1(self): b = """it.next()""" a = """next(it)""" self.check(b, a) def test_2(self): b = """a.b.c.d.next()""" a = """next(a.b.c.d)""" self.check(b, a) def test_3(self): b = """(a + b).next()""" a = """next((a + b))""" self.check(b, a) def test_4(self): b = """a().next()""" a = """next(a())""" self.check(b, a) def test_5(self): b = """a().next() + b""" a = """next(a()) + b""" self.check(b, a) def test_6(self): b = """c( a().next() + b)""" a = """c( next(a()) + b)""" self.check(b, a) def test_prefix_preservation_1(self): b = """ for a in b: foo(a) a.next() """ a = """ for a in b: foo(a) next(a) """ self.check(b, a) def test_prefix_preservation_2(self): b = """ for a in b: foo(a) # abc # def a.next() """ a = """ for a in b: foo(a) # abc # def next(a) """ self.check(b, a) def test_prefix_preservation_3(self): b = """ next = 5 for a in b: foo(a) a.next() """ a = """ next = 5 for a in b: foo(a) a.__next__() """ self.check(b, a, ignore_warnings=True) def test_prefix_preservation_4(self): b = """ next = 5 for a in b: foo(a) # abc # def a.next() """ a = """ next = 5 for a in b: foo(a) # abc # def a.__next__() """ self.check(b, a, ignore_warnings=True) def test_prefix_preservation_5(self): b = """ next = 5 for a in b: foo(foo(a), # abc a.next()) """ a = """ next = 5 for a in b: foo(foo(a), # abc a.__next__()) """ self.check(b, a, ignore_warnings=True) def test_prefix_preservation_6(self): b = """ for a in b: foo(foo(a), # abc a.next()) """ a = """ for a in b: foo(foo(a), # abc next(a)) """ self.check(b, a) def test_method_1(self): b = """ class A: def next(self): pass """ a = """ class A: def __next__(self): pass """ self.check(b, a) def test_method_2(self): b = """ class A(object): def next(self): pass """ a = """ class A(object): def __next__(self): pass """ self.check(b, a) def test_method_3(self): b = """ class A: def next(x): pass """ a = """ class A: def __next__(x): pass """ self.check(b, a) def test_method_4(self): b = """ class A: def __init__(self, foo): self.foo = foo def next(self): pass def __iter__(self): return self """ a = """ class A: def __init__(self, foo): self.foo = foo def __next__(self): pass def __iter__(self): return self """ self.check(b, a) def test_method_unchanged(self): s = """ class A: def next(self, a, b): pass """ self.unchanged(s) def test_shadowing_assign_simple(self): s = """ next = foo class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_assign_tuple_1(self): s = """ (next, a) = foo class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_assign_tuple_2(self): s = """ (a, (b, (next, c)), a) = foo class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_assign_list_1(self): s = """ [next, a] = foo class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_assign_list_2(self): s = """ [a, [b, [next, c]], a] = foo class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_builtin_assign(self): s = """ def foo(): __builtin__.next = foo class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_builtin_assign_in_tuple(self): s = """ def foo(): (a, __builtin__.next) = foo class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_builtin_assign_in_list(self): s = """ def foo(): [a, __builtin__.next] = foo class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_assign_to_next(self): s = """ def foo(): A.next = foo class A: def next(self, a, b): pass """ self.unchanged(s) def test_assign_to_next_in_tuple(self): s = """ def foo(): (a, A.next) = foo class A: def next(self, a, b): pass """ self.unchanged(s) def test_assign_to_next_in_list(self): s = """ def foo(): [a, A.next] = foo class A: def next(self, a, b): pass """ self.unchanged(s) def test_shadowing_import_1(self): s = """ import foo.bar as next class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_import_2(self): s = """ import bar, bar.foo as next class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_import_3(self): s = """ import bar, bar.foo as next, baz class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_import_from_1(self): s = """ from x import next class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_import_from_2(self): s = """ from x.a import next class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_import_from_3(self): s = """ from x import a, next, b class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_import_from_4(self): s = """ from x.a import a, next, b class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_funcdef_1(self): s = """ def next(a): pass class A: def next(self, a, b): pass """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_funcdef_2(self): b = """ def next(a): pass class A: def next(self): pass it.next() """ a = """ def next(a): pass class A: def __next__(self): pass it.__next__() """ self.warns(b, a, "Calls to builtin next() possibly shadowed") def test_shadowing_global_1(self): s = """ def f(): global next next = 5 """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_global_2(self): s = """ def f(): global a, next, b next = 5 """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_for_simple(self): s = """ for next in it(): pass b = 5 c = 6 """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_for_tuple_1(self): s = """ for next, b in it(): pass b = 5 c = 6 """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_shadowing_for_tuple_2(self): s = """ for a, (next, c), b in it(): pass b = 5 c = 6 """ self.warns_unchanged(s, "Calls to builtin next() possibly shadowed") def test_noncall_access_1(self): b = """gnext = g.next""" a = """gnext = g.__next__""" self.check(b, a) def test_noncall_access_2(self): b = """f(g.next + 5)""" a = """f(g.__next__ + 5)""" self.check(b, a) def test_noncall_access_3(self): b = """f(g().next + 5)""" a = """f(g().__next__ + 5)""" self.check(b, a) class Test_nonzero(FixerTestCase): fixer = "nonzero" def test_1(self): b = """ class A: def __nonzero__(self): pass """ a = """ class A: def __bool__(self): pass """ self.check(b, a) def test_2(self): b = """ class A(object): def __nonzero__(self): pass """ a = """ class A(object): def __bool__(self): pass """ self.check(b, a) def test_unchanged_1(self): s = """ class A(object): def __bool__(self): pass """ self.unchanged(s) def test_unchanged_2(self): s = """ class A(object): def __nonzero__(self, a): pass """ self.unchanged(s) def test_unchanged_func(self): s = """ def __nonzero__(self): pass """ self.unchanged(s) class Test_numliterals(FixerTestCase): fixer = "numliterals" def test_octal_1(self): b = """0755""" a = """0o755""" self.check(b, a) def test_long_int_1(self): b = """a = 12L""" a = """a = 12""" self.check(b, a) def test_long_int_2(self): b = """a = 12l""" a = """a = 12""" self.check(b, a) def test_long_hex(self): b = """b = 0x12l""" a = """b = 0x12""" self.check(b, a) def test_comments_and_spacing(self): b = """b = 0x12L""" a = """b = 0x12""" self.check(b, a) b = """b = 0755 # spam""" a = """b = 0o755 # spam""" self.check(b, a) def test_unchanged_int(self): s = """5""" self.unchanged(s) def test_unchanged_float(self): s = """5.0""" self.unchanged(s) def test_unchanged_octal(self): s = """0o755""" self.unchanged(s) def test_unchanged_hex(self): s = """0xABC""" self.unchanged(s) def test_unchanged_exp(self): s = """5.0e10""" self.unchanged(s) def test_unchanged_complex_int(self): s = """5 + 4j""" self.unchanged(s) def test_unchanged_complex_float(self): s = """5.4 + 4.9j""" self.unchanged(s) def test_unchanged_complex_bare(self): s = """4j""" self.unchanged(s) s = """4.4j""" self.unchanged(s) class Test_renames(FixerTestCase): fixer = "renames" modules = {"sys": ("maxint", "maxsize"), } def test_import_from(self): for mod, (old, new) in list(self.modules.items()): b = "from %s import %s" % (mod, old) a = "from %s import %s" % (mod, new) self.check(b, a) s = "from foo import %s" % old self.unchanged(s) def test_import_from_as(self): for mod, (old, new) in list(self.modules.items()): b = "from %s import %s as foo_bar" % (mod, old) a = "from %s import %s as foo_bar" % (mod, new) self.check(b, a) def test_import_module_usage(self): for mod, (old, new) in list(self.modules.items()): b = """ import %s foo(%s, %s.%s) """ % (mod, mod, mod, old) a = """ import %s foo(%s, %s.%s) """ % (mod, mod, mod, new) self.check(b, a) def XXX_test_from_import_usage(self): # not implemented yet for mod, (old, new) in list(self.modules.items()): b = """ from %s import %s foo(%s, %s) """ % (mod, old, mod, old) a = """ from %s import %s foo(%s, %s) """ % (mod, new, mod, new) self.check(b, a) class Test_unicode(FixerTestCase): fixer = "unicode" def test_whitespace(self): b = """unicode( x)""" a = """str( x)""" self.check(b, a) b = """ unicode(x )""" a = """ str(x )""" self.check(b, a) b = """ u'h'""" a = """ 'h'""" self.check(b, a) def test_unicode_call(self): b = """unicode(x, y, z)""" a = """str(x, y, z)""" self.check(b, a) def test_unichr(self): b = """unichr(u'h')""" a = """chr('h')""" self.check(b, a) def test_unicode_literal_1(self): b = '''u"x"''' a = '''"x"''' self.check(b, a) def test_unicode_literal_2(self): b = """ur'x'""" a = """r'x'""" self.check(b, a) def test_unicode_literal_3(self): b = """UR'''x''' """ a = """R'''x''' """ self.check(b, a) def test_native_literal_escape_u(self): b = r"""'\\\u20ac\U0001d121\\u20ac'""" a = r"""'\\\\u20ac\\U0001d121\\u20ac'""" self.check(b, a) b = r"""r'\\\u20ac\U0001d121\\u20ac'""" a = r"""r'\\\u20ac\U0001d121\\u20ac'""" self.check(b, a) def test_bytes_literal_escape_u(self): b = r"""b'\\\u20ac\U0001d121\\u20ac'""" a = r"""b'\\\u20ac\U0001d121\\u20ac'""" self.check(b, a) b = r"""br'\\\u20ac\U0001d121\\u20ac'""" a = r"""br'\\\u20ac\U0001d121\\u20ac'""" self.check(b, a) def test_unicode_literal_escape_u(self): b = r"""u'\\\u20ac\U0001d121\\u20ac'""" a = r"""'\\\u20ac\U0001d121\\u20ac'""" self.check(b, a) b = r"""ur'\\\u20ac\U0001d121\\u20ac'""" a = r"""r'\\\u20ac\U0001d121\\u20ac'""" self.check(b, a) def test_native_unicode_literal_escape_u(self): f = 'from __future__ import unicode_literals\n' b = f + r"""'\\\u20ac\U0001d121\\u20ac'""" a = f + r"""'\\\u20ac\U0001d121\\u20ac'""" self.check(b, a) b = f + r"""r'\\\u20ac\U0001d121\\u20ac'""" a = f + r"""r'\\\u20ac\U0001d121\\u20ac'""" self.check(b, a) class Test_filter(FixerTestCase): fixer = "filter" def test_prefix_preservation(self): b = """x = filter( foo, 'abc' )""" a = """x = list(filter( foo, 'abc' ))""" self.check(b, a) b = """x = filter( None , 'abc' )""" a = """x = [_f for _f in 'abc' if _f]""" self.check(b, a) def test_filter_basic(self): b = """x = filter(None, 'abc')""" a = """x = [_f for _f in 'abc' if _f]""" self.check(b, a) b = """x = len(filter(f, 'abc'))""" a = """x = len(list(filter(f, 'abc')))""" self.check(b, a) b = """x = filter(lambda x: x%2 == 0, range(10))""" a = """x = [x for x in range(10) if x%2 == 0]""" self.check(b, a) # Note the parens around x b = """x = filter(lambda (x): x%2 == 0, range(10))""" a = """x = [x for x in range(10) if x%2 == 0]""" self.check(b, a) # XXX This (rare) case is not supported ## b = """x = filter(f, 'abc')[0]""" ## a = """x = list(filter(f, 'abc'))[0]""" ## self.check(b, a) def test_filter_nochange(self): a = """b.join(filter(f, 'abc'))""" self.unchanged(a) a = """(a + foo(5)).join(filter(f, 'abc'))""" self.unchanged(a) a = """iter(filter(f, 'abc'))""" self.unchanged(a) a = """list(filter(f, 'abc'))""" self.unchanged(a) a = """list(filter(f, 'abc'))[0]""" self.unchanged(a) a = """set(filter(f, 'abc'))""" self.unchanged(a) a = """set(filter(f, 'abc')).pop()""" self.unchanged(a) a = """tuple(filter(f, 'abc'))""" self.unchanged(a) a = """any(filter(f, 'abc'))""" self.unchanged(a) a = """all(filter(f, 'abc'))""" self.unchanged(a) a = """sum(filter(f, 'abc'))""" self.unchanged(a) a = """sorted(filter(f, 'abc'))""" self.unchanged(a) a = """sorted(filter(f, 'abc'), key=blah)""" self.unchanged(a) a = """sorted(filter(f, 'abc'), key=blah)[0]""" self.unchanged(a) a = """enumerate(filter(f, 'abc'))""" self.unchanged(a) a = """enumerate(filter(f, 'abc'), start=1)""" self.unchanged(a) a = """for i in filter(f, 'abc'): pass""" self.unchanged(a) a = """[x for x in filter(f, 'abc')]""" self.unchanged(a) a = """(x for x in filter(f, 'abc'))""" self.unchanged(a) def test_future_builtins(self): a = "from future_builtins import spam, filter; filter(f, 'ham')" self.unchanged(a) b = """from future_builtins import spam; x = filter(f, 'abc')""" a = """from future_builtins import spam; x = list(filter(f, 'abc'))""" self.check(b, a) a = "from future_builtins import *; filter(f, 'ham')" self.unchanged(a) class Test_map(FixerTestCase): fixer = "map" def check(self, b, a): self.unchanged("from future_builtins import map; " + b, a) super(Test_map, self).check(b, a) def test_prefix_preservation(self): b = """x = map( f, 'abc' )""" a = """x = list(map( f, 'abc' ))""" self.check(b, a) def test_trailing_comment(self): b = """x = map(f, 'abc') # foo""" a = """x = list(map(f, 'abc')) # foo""" self.check(b, a) def test_None_with_multiple_arguments(self): s = """x = map(None, a, b, c)""" self.warns_unchanged(s, "cannot convert map(None, ...) with " "multiple arguments") def test_map_basic(self): b = """x = map(f, 'abc')""" a = """x = list(map(f, 'abc'))""" self.check(b, a) b = """x = len(map(f, 'abc', 'def'))""" a = """x = len(list(map(f, 'abc', 'def')))""" self.check(b, a) b = """x = map(None, 'abc')""" a = """x = list('abc')""" self.check(b, a) b = """x = map(lambda x: x+1, range(4))""" a = """x = [x+1 for x in range(4)]""" self.check(b, a) # Note the parens around x b = """x = map(lambda (x): x+1, range(4))""" a = """x = [x+1 for x in range(4)]""" self.check(b, a) b = """ foo() # foo map(f, x) """ a = """ foo() # foo list(map(f, x)) """ self.warns(b, a, "You should use a for loop here") # XXX This (rare) case is not supported ## b = """x = map(f, 'abc')[0]""" ## a = """x = list(map(f, 'abc'))[0]""" ## self.check(b, a) def test_map_nochange(self): a = """b.join(map(f, 'abc'))""" self.unchanged(a) a = """(a + foo(5)).join(map(f, 'abc'))""" self.unchanged(a) a = """iter(map(f, 'abc'))""" self.unchanged(a) a = """list(map(f, 'abc'))""" self.unchanged(a) a = """list(map(f, 'abc'))[0]""" self.unchanged(a) a = """set(map(f, 'abc'))""" self.unchanged(a) a = """set(map(f, 'abc')).pop()""" self.unchanged(a) a = """tuple(map(f, 'abc'))""" self.unchanged(a) a = """any(map(f, 'abc'))""" self.unchanged(a) a = """all(map(f, 'abc'))""" self.unchanged(a) a = """sum(map(f, 'abc'))""" self.unchanged(a) a = """sorted(map(f, 'abc'))""" self.unchanged(a) a = """sorted(map(f, 'abc'), key=blah)""" self.unchanged(a) a = """sorted(map(f, 'abc'), key=blah)[0]""" self.unchanged(a) a = """enumerate(map(f, 'abc'))""" self.unchanged(a) a = """enumerate(map(f, 'abc'), start=1)""" self.unchanged(a) a = """for i in map(f, 'abc'): pass""" self.unchanged(a) a = """[x for x in map(f, 'abc')]""" self.unchanged(a) a = """(x for x in map(f, 'abc'))""" self.unchanged(a) def test_future_builtins(self): a = "from future_builtins import spam, map, eggs; map(f, 'ham')" self.unchanged(a) b = """from future_builtins import spam, eggs; x = map(f, 'abc')""" a = """from future_builtins import spam, eggs; x = list(map(f, 'abc'))""" self.check(b, a) a = "from future_builtins import *; map(f, 'ham')" self.unchanged(a) class Test_zip(FixerTestCase): fixer = "zip" def check(self, b, a): self.unchanged("from future_builtins import zip; " + b, a) super(Test_zip, self).check(b, a) def test_zip_basic(self): b = """x = zip(a, b, c)""" a = """x = list(zip(a, b, c))""" self.check(b, a) b = """x = len(zip(a, b))""" a = """x = len(list(zip(a, b)))""" self.check(b, a) def test_zip_nochange(self): a = """b.join(zip(a, b))""" self.unchanged(a) a = """(a + foo(5)).join(zip(a, b))""" self.unchanged(a) a = """iter(zip(a, b))""" self.unchanged(a) a = """list(zip(a, b))""" self.unchanged(a) a = """list(zip(a, b))[0]""" self.unchanged(a) a = """set(zip(a, b))""" self.unchanged(a) a = """set(zip(a, b)).pop()""" self.unchanged(a) a = """tuple(zip(a, b))""" self.unchanged(a) a = """any(zip(a, b))""" self.unchanged(a) a = """all(zip(a, b))""" self.unchanged(a) a = """sum(zip(a, b))""" self.unchanged(a) a = """sorted(zip(a, b))""" self.unchanged(a) a = """sorted(zip(a, b), key=blah)""" self.unchanged(a) a = """sorted(zip(a, b), key=blah)[0]""" self.unchanged(a) a = """enumerate(zip(a, b))""" self.unchanged(a) a = """enumerate(zip(a, b), start=1)""" self.unchanged(a) a = """for i in zip(a, b): pass""" self.unchanged(a) a = """[x for x in zip(a, b)]""" self.unchanged(a) a = """(x for x in zip(a, b))""" self.unchanged(a) def test_future_builtins(self): a = "from future_builtins import spam, zip, eggs; zip(a, b)" self.unchanged(a) b = """from future_builtins import spam, eggs; x = zip(a, b)""" a = """from future_builtins import spam, eggs; x = list(zip(a, b))""" self.check(b, a) a = "from future_builtins import *; zip(a, b)" self.unchanged(a) class Test_standarderror(FixerTestCase): fixer = "standarderror" def test(self): b = """x = StandardError()""" a = """x = Exception()""" self.check(b, a) b = """x = StandardError(a, b, c)""" a = """x = Exception(a, b, c)""" self.check(b, a) b = """f(2 + StandardError(a, b, c))""" a = """f(2 + Exception(a, b, c))""" self.check(b, a) class Test_types(FixerTestCase): fixer = "types" def test_basic_types_convert(self): b = """types.StringType""" a = """bytes""" self.check(b, a) b = """types.DictType""" a = """dict""" self.check(b, a) b = """types . IntType""" a = """int""" self.check(b, a) b = """types.ListType""" a = """list""" self.check(b, a) b = """types.LongType""" a = """int""" self.check(b, a) b = """types.NoneType""" a = """type(None)""" self.check(b, a) class Test_idioms(FixerTestCase): fixer = "idioms" def test_while(self): b = """while 1: foo()""" a = """while True: foo()""" self.check(b, a) b = """while 1: foo()""" a = """while True: foo()""" self.check(b, a) b = """ while 1: foo() """ a = """ while True: foo() """ self.check(b, a) def test_while_unchanged(self): s = """while 11: foo()""" self.unchanged(s) s = """while 0: foo()""" self.unchanged(s) s = """while foo(): foo()""" self.unchanged(s) s = """while []: foo()""" self.unchanged(s) def test_eq_simple(self): b = """type(x) == T""" a = """isinstance(x, T)""" self.check(b, a) b = """if type(x) == T: pass""" a = """if isinstance(x, T): pass""" self.check(b, a) def test_eq_reverse(self): b = """T == type(x)""" a = """isinstance(x, T)""" self.check(b, a) b = """if T == type(x): pass""" a = """if isinstance(x, T): pass""" self.check(b, a) def test_eq_expression(self): b = """type(x+y) == d.get('T')""" a = """isinstance(x+y, d.get('T'))""" self.check(b, a) b = """type( x + y) == d.get('T')""" a = """isinstance(x + y, d.get('T'))""" self.check(b, a) def test_is_simple(self): b = """type(x) is T""" a = """isinstance(x, T)""" self.check(b, a) b = """if type(x) is T: pass""" a = """if isinstance(x, T): pass""" self.check(b, a) def test_is_reverse(self): b = """T is type(x)""" a = """isinstance(x, T)""" self.check(b, a) b = """if T is type(x): pass""" a = """if isinstance(x, T): pass""" self.check(b, a) def test_is_expression(self): b = """type(x+y) is d.get('T')""" a = """isinstance(x+y, d.get('T'))""" self.check(b, a) b = """type( x + y) is d.get('T')""" a = """isinstance(x + y, d.get('T'))""" self.check(b, a) def test_is_not_simple(self): b = """type(x) is not T""" a = """not isinstance(x, T)""" self.check(b, a) b = """if type(x) is not T: pass""" a = """if not isinstance(x, T): pass""" self.check(b, a) def test_is_not_reverse(self): b = """T is not type(x)""" a = """not isinstance(x, T)""" self.check(b, a) b = """if T is not type(x): pass""" a = """if not isinstance(x, T): pass""" self.check(b, a) def test_is_not_expression(self): b = """type(x+y) is not d.get('T')""" a = """not isinstance(x+y, d.get('T'))""" self.check(b, a) b = """type( x + y) is not d.get('T')""" a = """not isinstance(x + y, d.get('T'))""" self.check(b, a) def test_ne_simple(self): b = """type(x) != T""" a = """not isinstance(x, T)""" self.check(b, a) b = """if type(x) != T: pass""" a = """if not isinstance(x, T): pass""" self.check(b, a) def test_ne_reverse(self): b = """T != type(x)""" a = """not isinstance(x, T)""" self.check(b, a) b = """if T != type(x): pass""" a = """if not isinstance(x, T): pass""" self.check(b, a) def test_ne_expression(self): b = """type(x+y) != d.get('T')""" a = """not isinstance(x+y, d.get('T'))""" self.check(b, a) b = """type( x + y) != d.get('T')""" a = """not isinstance(x + y, d.get('T'))""" self.check(b, a) def test_type_unchanged(self): a = """type(x).__name__""" self.unchanged(a) def test_sort_list_call(self): b = """ v = list(t) v.sort() foo(v) """ a = """ v = sorted(t) foo(v) """ self.check(b, a) b = """ v = list(foo(b) + d) v.sort() foo(v) """ a = """ v = sorted(foo(b) + d) foo(v) """ self.check(b, a) b = """ while x: v = list(t) v.sort() foo(v) """ a = """ while x: v = sorted(t) foo(v) """ self.check(b, a) b = """ v = list(t) # foo v.sort() foo(v) """ a = """ v = sorted(t) # foo foo(v) """ self.check(b, a) b = r""" v = list( t) v.sort() foo(v) """ a = r""" v = sorted( t) foo(v) """ self.check(b, a) b = r""" try: m = list(s) m.sort() except: pass """ a = r""" try: m = sorted(s) except: pass """ self.check(b, a) b = r""" try: m = list(s) # foo m.sort() except: pass """ a = r""" try: m = sorted(s) # foo except: pass """ self.check(b, a) b = r""" m = list(s) # more comments m.sort()""" a = r""" m = sorted(s) # more comments""" self.check(b, a) def test_sort_simple_expr(self): b = """ v = t v.sort() foo(v) """ a = """ v = sorted(t) foo(v) """ self.check(b, a) b = """ v = foo(b) v.sort() foo(v) """ a = """ v = sorted(foo(b)) foo(v) """ self.check(b, a) b = """ v = b.keys() v.sort() foo(v) """ a = """ v = sorted(b.keys()) foo(v) """ self.check(b, a) b = """ v = foo(b) + d v.sort() foo(v) """ a = """ v = sorted(foo(b) + d) foo(v) """ self.check(b, a) b = """ while x: v = t v.sort() foo(v) """ a = """ while x: v = sorted(t) foo(v) """ self.check(b, a) b = """ v = t # foo v.sort() foo(v) """ a = """ v = sorted(t) # foo foo(v) """ self.check(b, a) b = r""" v = t v.sort() foo(v) """ a = r""" v = sorted(t) foo(v) """ self.check(b, a) def test_sort_unchanged(self): s = """ v = list(t) w.sort() foo(w) """ self.unchanged(s) s = """ v = list(t) v.sort(u) foo(v) """ self.unchanged(s) class Test_basestring(FixerTestCase): fixer = "basestring" def test_basestring(self): b = """isinstance(x, basestring)""" a = """isinstance(x, str)""" self.check(b, a) class Test_buffer(FixerTestCase): fixer = "buffer" def test_buffer(self): b = """x = buffer(y)""" a = """x = memoryview(y)""" self.check(b, a) def test_slicing(self): b = """buffer(y)[4:5]""" a = """memoryview(y)[4:5]""" self.check(b, a) class Test_future(FixerTestCase): fixer = "future" def test_future(self): b = """from __future__ import braces""" a = """""" self.check(b, a) b = """# comment\nfrom __future__ import braces""" a = """# comment\n""" self.check(b, a) b = """from __future__ import braces\n# comment""" a = """\n# comment""" self.check(b, a) def test_run_order(self): self.assert_runs_after('print') class Test_itertools(FixerTestCase): fixer = "itertools" def checkall(self, before, after): # Because we need to check with and without the itertools prefix # and on each of the three functions, these loops make it all # much easier for i in ('itertools.', ''): for f in ('map', 'filter', 'zip'): b = before %(i+'i'+f) a = after %(f) self.check(b, a) def test_0(self): # A simple example -- test_1 covers exactly the same thing, # but it's not quite as clear. b = "itertools.izip(a, b)" a = "zip(a, b)" self.check(b, a) def test_1(self): b = """%s(f, a)""" a = """%s(f, a)""" self.checkall(b, a) def test_qualified(self): b = """itertools.ifilterfalse(a, b)""" a = """itertools.filterfalse(a, b)""" self.check(b, a) b = """itertools.izip_longest(a, b)""" a = """itertools.zip_longest(a, b)""" self.check(b, a) def test_2(self): b = """ifilterfalse(a, b)""" a = """filterfalse(a, b)""" self.check(b, a) b = """izip_longest(a, b)""" a = """zip_longest(a, b)""" self.check(b, a) def test_space_1(self): b = """ %s(f, a)""" a = """ %s(f, a)""" self.checkall(b, a) def test_space_2(self): b = """ itertools.ifilterfalse(a, b)""" a = """ itertools.filterfalse(a, b)""" self.check(b, a) b = """ itertools.izip_longest(a, b)""" a = """ itertools.zip_longest(a, b)""" self.check(b, a) def test_run_order(self): self.assert_runs_after('map', 'zip', 'filter') class Test_itertools_imports(FixerTestCase): fixer = 'itertools_imports' def test_reduced(self): b = "from itertools import imap, izip, foo" a = "from itertools import foo" self.check(b, a) b = "from itertools import bar, imap, izip, foo" a = "from itertools import bar, foo" self.check(b, a) b = "from itertools import chain, imap, izip" a = "from itertools import chain" self.check(b, a) def test_comments(self): b = "#foo\nfrom itertools import imap, izip" a = "#foo\n" self.check(b, a) def test_none(self): b = "from itertools import imap, izip" a = "" self.check(b, a) b = "from itertools import izip" a = "" self.check(b, a) def test_import_as(self): b = "from itertools import izip, bar as bang, imap" a = "from itertools import bar as bang" self.check(b, a) b = "from itertools import izip as _zip, imap, bar" a = "from itertools import bar" self.check(b, a) b = "from itertools import imap as _map" a = "" self.check(b, a) b = "from itertools import imap as _map, izip as _zip" a = "" self.check(b, a) s = "from itertools import bar as bang" self.unchanged(s) def test_ifilter_and_zip_longest(self): for name in "filterfalse", "zip_longest": b = "from itertools import i%s" % (name,) a = "from itertools import %s" % (name,) self.check(b, a) b = "from itertools import imap, i%s, foo" % (name,) a = "from itertools import %s, foo" % (name,) self.check(b, a) b = "from itertools import bar, i%s, foo" % (name,) a = "from itertools import bar, %s, foo" % (name,) self.check(b, a) def test_import_star(self): s = "from itertools import *" self.unchanged(s) def test_unchanged(self): s = "from itertools import foo" self.unchanged(s) class Test_import(FixerTestCase): fixer = "import" def setUp(self): super(Test_import, self).setUp() # Need to replace fix_import's exists method # so we can check that it's doing the right thing self.files_checked = [] self.present_files = set() self.always_exists = True def fake_exists(name): self.files_checked.append(name) return self.always_exists or (name in self.present_files) from lib2to3.fixes import fix_import fix_import.exists = fake_exists def tearDown(self): from lib2to3.fixes import fix_import fix_import.exists = os.path.exists def check_both(self, b, a): self.always_exists = True super(Test_import, self).check(b, a) self.always_exists = False super(Test_import, self).unchanged(b) def test_files_checked(self): def p(path): # Takes a unix path and returns a path with correct separators return os.path.pathsep.join(path.split("/")) self.always_exists = False self.present_files = set(['__init__.py']) expected_extensions = ('.py', os.path.sep, '.pyc', '.so', '.sl', '.pyd') names_to_test = (p("/spam/eggs.py"), "ni.py", p("../../shrubbery.py")) for name in names_to_test: self.files_checked = [] self.filename = name self.unchanged("import jam") if os.path.dirname(name): name = os.path.dirname(name) + '/jam' else: name = 'jam' expected_checks = set(name + ext for ext in expected_extensions) expected_checks.add("__init__.py") self.assertEqual(set(self.files_checked), expected_checks) def test_not_in_package(self): s = "import bar" self.always_exists = False self.present_files = set(["bar.py"]) self.unchanged(s) def test_with_absolute_import_enabled(self): s = "from __future__ import absolute_import\nimport bar" self.always_exists = False self.present_files = set(["__init__.py", "bar.py"]) self.unchanged(s) def test_in_package(self): b = "import bar" a = "from . import bar" self.always_exists = False self.present_files = set(["__init__.py", "bar.py"]) self.check(b, a) def test_import_from_package(self): b = "import bar" a = "from . import bar" self.always_exists = False self.present_files = set(["__init__.py", "bar" + os.path.sep]) self.check(b, a) def test_already_relative_import(self): s = "from . import bar" self.unchanged(s) def test_comments_and_indent(self): b = "import bar # Foo" a = "from . import bar # Foo" self.check(b, a) def test_from(self): b = "from foo import bar, baz" a = "from .foo import bar, baz" self.check_both(b, a) b = "from foo import bar" a = "from .foo import bar" self.check_both(b, a) b = "from foo import (bar, baz)" a = "from .foo import (bar, baz)" self.check_both(b, a) def test_dotted_from(self): b = "from green.eggs import ham" a = "from .green.eggs import ham" self.check_both(b, a) def test_from_as(self): b = "from green.eggs import ham as spam" a = "from .green.eggs import ham as spam" self.check_both(b, a) def test_import(self): b = "import foo" a = "from . import foo" self.check_both(b, a) b = "import foo, bar" a = "from . import foo, bar" self.check_both(b, a) b = "import foo, bar, x" a = "from . import foo, bar, x" self.check_both(b, a) b = "import x, y, z" a = "from . import x, y, z" self.check_both(b, a) def test_import_as(self): b = "import foo as x" a = "from . import foo as x" self.check_both(b, a) b = "import a as b, b as c, c as d" a = "from . import a as b, b as c, c as d" self.check_both(b, a) def test_local_and_absolute(self): self.always_exists = False self.present_files = set(["foo.py", "__init__.py"]) s = "import foo, bar" self.warns_unchanged(s, "absolute and local imports together") def test_dotted_import(self): b = "import foo.bar" a = "from . import foo.bar" self.check_both(b, a) def test_dotted_import_as(self): b = "import foo.bar as bang" a = "from . import foo.bar as bang" self.check_both(b, a) def test_prefix(self): b = """ # prefix import foo.bar """ a = """ # prefix from . import foo.bar """ self.check_both(b, a) class Test_set_literal(FixerTestCase): fixer = "set_literal" def test_basic(self): b = """set([1, 2, 3])""" a = """{1, 2, 3}""" self.check(b, a) b = """set((1, 2, 3))""" a = """{1, 2, 3}""" self.check(b, a) b = """set((1,))""" a = """{1}""" self.check(b, a) b = """set([1])""" self.check(b, a) b = """set((a, b))""" a = """{a, b}""" self.check(b, a) b = """set([a, b])""" self.check(b, a) b = """set((a*234, f(args=23)))""" a = """{a*234, f(args=23)}""" self.check(b, a) b = """set([a*23, f(23)])""" a = """{a*23, f(23)}""" self.check(b, a) b = """set([a-234**23])""" a = """{a-234**23}""" self.check(b, a) def test_listcomps(self): b = """set([x for x in y])""" a = """{x for x in y}""" self.check(b, a) b = """set([x for x in y if x == m])""" a = """{x for x in y if x == m}""" self.check(b, a) b = """set([x for x in y for a in b])""" a = """{x for x in y for a in b}""" self.check(b, a) b = """set([f(x) - 23 for x in y])""" a = """{f(x) - 23 for x in y}""" self.check(b, a) def test_whitespace(self): b = """set( [1, 2])""" a = """{1, 2}""" self.check(b, a) b = """set([1 , 2])""" a = """{1 , 2}""" self.check(b, a) b = """set([ 1 ])""" a = """{ 1 }""" self.check(b, a) b = """set( [1] )""" a = """{1}""" self.check(b, a) b = """set([ 1, 2 ])""" a = """{ 1, 2 }""" self.check(b, a) b = """set([x for x in y ])""" a = """{x for x in y }""" self.check(b, a) b = """set( [1, 2] ) """ a = """{1, 2}\n""" self.check(b, a) def test_comments(self): b = """set((1, 2)) # Hi""" a = """{1, 2} # Hi""" self.check(b, a) # This isn't optimal behavior, but the fixer is optional. b = """ # Foo set( # Bar (1, 2) ) """ a = """ # Foo {1, 2} """ self.check(b, a) def test_unchanged(self): s = """set()""" self.unchanged(s) s = """set(a)""" self.unchanged(s) s = """set(a, b, c)""" self.unchanged(s) # Don't transform generators because they might have to be lazy. s = """set(x for x in y)""" self.unchanged(s) s = """set(x for x in y if z)""" self.unchanged(s) s = """set(a*823-23**2 + f(23))""" self.unchanged(s) class Test_sys_exc(FixerTestCase): fixer = "sys_exc" def test_0(self): b = "sys.exc_type" a = "sys.exc_info()[0]" self.check(b, a) def test_1(self): b = "sys.exc_value" a = "sys.exc_info()[1]" self.check(b, a) def test_2(self): b = "sys.exc_traceback" a = "sys.exc_info()[2]" self.check(b, a) def test_3(self): b = "sys.exc_type # Foo" a = "sys.exc_info()[0] # Foo" self.check(b, a) def test_4(self): b = "sys. exc_type" a = "sys. exc_info()[0]" self.check(b, a) def test_5(self): b = "sys .exc_type" a = "sys .exc_info()[0]" self.check(b, a) class Test_paren(FixerTestCase): fixer = "paren" def test_0(self): b = """[i for i in 1, 2 ]""" a = """[i for i in (1, 2) ]""" self.check(b, a) def test_1(self): b = """[i for i in 1, 2, ]""" a = """[i for i in (1, 2,) ]""" self.check(b, a) def test_2(self): b = """[i for i in 1, 2 ]""" a = """[i for i in (1, 2) ]""" self.check(b, a) def test_3(self): b = """[i for i in 1, 2 if i]""" a = """[i for i in (1, 2) if i]""" self.check(b, a) def test_4(self): b = """[i for i in 1, 2 ]""" a = """[i for i in (1, 2) ]""" self.check(b, a) def test_5(self): b = """(i for i in 1, 2)""" a = """(i for i in (1, 2))""" self.check(b, a) def test_6(self): b = """(i for i in 1 ,2 if i)""" a = """(i for i in (1 ,2) if i)""" self.check(b, a) def test_unchanged_0(self): s = """[i for i in (1, 2)]""" self.unchanged(s) def test_unchanged_1(self): s = """[i for i in foo()]""" self.unchanged(s) def test_unchanged_2(self): s = """[i for i in (1, 2) if nothing]""" self.unchanged(s) def test_unchanged_3(self): s = """(i for i in (1, 2))""" self.unchanged(s) def test_unchanged_4(self): s = """[i for i in m]""" self.unchanged(s) class Test_metaclass(FixerTestCase): fixer = 'metaclass' def test_unchanged(self): self.unchanged("class X(): pass") self.unchanged("class X(object): pass") self.unchanged("class X(object1, object2): pass") self.unchanged("class X(object1, object2, object3): pass") self.unchanged("class X(metaclass=Meta): pass") self.unchanged("class X(b, arg=23, metclass=Meta): pass") self.unchanged("class X(b, arg=23, metaclass=Meta, other=42): pass") s = """ class X: def __metaclass__(self): pass """ self.unchanged(s) s = """ class X: a[23] = 74 """ self.unchanged(s) def test_comments(self): b = """ class X: # hi __metaclass__ = AppleMeta """ a = """ class X(metaclass=AppleMeta): # hi pass """ self.check(b, a) b = """ class X: __metaclass__ = Meta # Bedtime! """ a = """ class X(metaclass=Meta): pass # Bedtime! """ self.check(b, a) def test_meta(self): # no-parent class, odd body b = """ class X(): __metaclass__ = Q pass """ a = """ class X(metaclass=Q): pass """ self.check(b, a) # one parent class, no body b = """class X(object): __metaclass__ = Q""" a = """class X(object, metaclass=Q): pass""" self.check(b, a) # one parent, simple body b = """ class X(object): __metaclass__ = Meta bar = 7 """ a = """ class X(object, metaclass=Meta): bar = 7 """ self.check(b, a) b = """ class X: __metaclass__ = Meta; x = 4; g = 23 """ a = """ class X(metaclass=Meta): x = 4; g = 23 """ self.check(b, a) # one parent, simple body, __metaclass__ last b = """ class X(object): bar = 7 __metaclass__ = Meta """ a = """ class X(object, metaclass=Meta): bar = 7 """ self.check(b, a) # redefining __metaclass__ b = """ class X(): __metaclass__ = A __metaclass__ = B bar = 7 """ a = """ class X(metaclass=B): bar = 7 """ self.check(b, a) # multiple inheritance, simple body b = """ class X(clsA, clsB): __metaclass__ = Meta bar = 7 """ a = """ class X(clsA, clsB, metaclass=Meta): bar = 7 """ self.check(b, a) # keywords in the class statement b = """class m(a, arg=23): __metaclass__ = Meta""" a = """class m(a, arg=23, metaclass=Meta): pass""" self.check(b, a) b = """ class X(expression(2 + 4)): __metaclass__ = Meta """ a = """ class X(expression(2 + 4), metaclass=Meta): pass """ self.check(b, a) b = """ class X(expression(2 + 4), x**4): __metaclass__ = Meta """ a = """ class X(expression(2 + 4), x**4, metaclass=Meta): pass """ self.check(b, a) b = """ class X: __metaclass__ = Meta save.py = 23 """ a = """ class X(metaclass=Meta): save.py = 23 """ self.check(b, a) class Test_getcwdu(FixerTestCase): fixer = 'getcwdu' def test_basic(self): b = """os.getcwdu""" a = """os.getcwd""" self.check(b, a) b = """os.getcwdu()""" a = """os.getcwd()""" self.check(b, a) b = """meth = os.getcwdu""" a = """meth = os.getcwd""" self.check(b, a) b = """os.getcwdu(args)""" a = """os.getcwd(args)""" self.check(b, a) def test_comment(self): b = """os.getcwdu() # Foo""" a = """os.getcwd() # Foo""" self.check(b, a) def test_unchanged(self): s = """os.getcwd()""" self.unchanged(s) s = """getcwdu()""" self.unchanged(s) s = """os.getcwdb()""" self.unchanged(s) def test_indentation(self): b = """ if 1: os.getcwdu() """ a = """ if 1: os.getcwd() """ self.check(b, a) def test_multilation(self): b = """os .getcwdu()""" a = """os .getcwd()""" self.check(b, a) b = """os. getcwdu""" a = """os. getcwd""" self.check(b, a) b = """os.getcwdu ( )""" a = """os.getcwd ( )""" self.check(b, a) class Test_operator(FixerTestCase): fixer = "operator" def test_operator_isCallable(self): b = "operator.isCallable(x)" a = "hasattr(x, '__call__')" self.check(b, a) def test_operator_sequenceIncludes(self): b = "operator.sequenceIncludes(x, y)" a = "operator.contains(x, y)" self.check(b, a) b = "operator .sequenceIncludes(x, y)" a = "operator .contains(x, y)" self.check(b, a) b = "operator. sequenceIncludes(x, y)" a = "operator. contains(x, y)" self.check(b, a) def test_operator_isSequenceType(self): b = "operator.isSequenceType(x)" a = "import collections\nisinstance(x, collections.Sequence)" self.check(b, a) def test_operator_isMappingType(self): b = "operator.isMappingType(x)" a = "import collections\nisinstance(x, collections.Mapping)" self.check(b, a) def test_operator_isNumberType(self): b = "operator.isNumberType(x)" a = "import numbers\nisinstance(x, numbers.Number)" self.check(b, a) def test_operator_repeat(self): b = "operator.repeat(x, n)" a = "operator.mul(x, n)" self.check(b, a) b = "operator .repeat(x, n)" a = "operator .mul(x, n)" self.check(b, a) b = "operator. repeat(x, n)" a = "operator. mul(x, n)" self.check(b, a) def test_operator_irepeat(self): b = "operator.irepeat(x, n)" a = "operator.imul(x, n)" self.check(b, a) b = "operator .irepeat(x, n)" a = "operator .imul(x, n)" self.check(b, a) b = "operator. irepeat(x, n)" a = "operator. imul(x, n)" self.check(b, a) def test_bare_isCallable(self): s = "isCallable(x)" t = "You should use 'hasattr(x, '__call__')' here." self.warns_unchanged(s, t) def test_bare_sequenceIncludes(self): s = "sequenceIncludes(x, y)" t = "You should use 'operator.contains(x, y)' here." self.warns_unchanged(s, t) def test_bare_operator_isSequenceType(self): s = "isSequenceType(z)" t = "You should use 'isinstance(z, collections.Sequence)' here." self.warns_unchanged(s, t) def test_bare_operator_isMappingType(self): s = "isMappingType(x)" t = "You should use 'isinstance(x, collections.Mapping)' here." self.warns_unchanged(s, t) def test_bare_operator_isNumberType(self): s = "isNumberType(y)" t = "You should use 'isinstance(y, numbers.Number)' here." self.warns_unchanged(s, t) def test_bare_operator_repeat(self): s = "repeat(x, n)" t = "You should use 'operator.mul(x, n)' here." self.warns_unchanged(s, t) def test_bare_operator_irepeat(self): s = "irepeat(y, 187)" t = "You should use 'operator.imul(y, 187)' here." self.warns_unchanged(s, t) class Test_exitfunc(FixerTestCase): fixer = "exitfunc" def test_simple(self): b = """ import sys sys.exitfunc = my_atexit """ a = """ import sys import atexit atexit.register(my_atexit) """ self.check(b, a) def test_names_import(self): b = """ import sys, crumbs sys.exitfunc = my_func """ a = """ import sys, crumbs, atexit atexit.register(my_func) """ self.check(b, a) def test_complex_expression(self): b = """ import sys sys.exitfunc = do(d)/a()+complex(f=23, g=23)*expression """ a = """ import sys import atexit atexit.register(do(d)/a()+complex(f=23, g=23)*expression) """ self.check(b, a) def test_comments(self): b = """ import sys # Foo sys.exitfunc = f # Blah """ a = """ import sys import atexit # Foo atexit.register(f) # Blah """ self.check(b, a) b = """ import apples, sys, crumbs, larry # Pleasant comments sys.exitfunc = func """ a = """ import apples, sys, crumbs, larry, atexit # Pleasant comments atexit.register(func) """ self.check(b, a) def test_in_a_function(self): b = """ import sys def f(): sys.exitfunc = func """ a = """ import sys import atexit def f(): atexit.register(func) """ self.check(b, a) def test_no_sys_import(self): b = """sys.exitfunc = f""" a = """atexit.register(f)""" msg = ("Can't find sys import; Please add an atexit import at the " "top of your file.") self.warns(b, a, msg) def test_unchanged(self): s = """f(sys.exitfunc)""" self.unchanged(s) class Test_asserts(FixerTestCase): fixer = "asserts" def test_deprecated_names(self): tests = [ ('self.assert_(True)', 'self.assertTrue(True)'), ('self.assertEquals(2, 2)', 'self.assertEqual(2, 2)'), ('self.assertNotEquals(2, 3)', 'self.assertNotEqual(2, 3)'), ('self.assertAlmostEquals(2, 3)', 'self.assertAlmostEqual(2, 3)'), ('self.assertNotAlmostEquals(2, 8)', 'self.assertNotAlmostEqual(2, 8)'), ('self.failUnlessEqual(2, 2)', 'self.assertEqual(2, 2)'), ('self.failIfEqual(2, 3)', 'self.assertNotEqual(2, 3)'), ('self.failUnlessAlmostEqual(2, 3)', 'self.assertAlmostEqual(2, 3)'), ('self.failIfAlmostEqual(2, 8)', 'self.assertNotAlmostEqual(2, 8)'), ('self.failUnless(True)', 'self.assertTrue(True)'), ('self.failUnlessRaises(foo)', 'self.assertRaises(foo)'), ('self.failIf(False)', 'self.assertFalse(False)'), ] for b, a in tests: self.check(b, a) def test_variants(self): b = 'eq = self.assertEquals' a = 'eq = self.assertEqual' self.check(b, a) b = 'self.assertEquals(2, 3, msg="fail")' a = 'self.assertEqual(2, 3, msg="fail")' self.check(b, a) b = 'self.assertEquals(2, 3, msg="fail") # foo' a = 'self.assertEqual(2, 3, msg="fail") # foo' self.check(b, a) b = 'self.assertEquals (2, 3)' a = 'self.assertEqual (2, 3)' self.check(b, a) b = ' self.assertEquals (2, 3)' a = ' self.assertEqual (2, 3)' self.check(b, a) b = 'with self.failUnlessRaises(Explosion): explode()' a = 'with self.assertRaises(Explosion): explode()' self.check(b, a) b = 'with self.failUnlessRaises(Explosion) as cm: explode()' a = 'with self.assertRaises(Explosion) as cm: explode()' self.check(b, a) def test_unchanged(self): self.unchanged('self.assertEqualsOnSaturday') self.unchanged('self.assertEqualsOnSaturday(3, 5)')
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support.py
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