mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-16 01:50:39 +00:00
1222 lines
34 KiB
Python
1222 lines
34 KiB
Python
from sys import version_info
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from pyflakes import messages as m
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from pyflakes.checker import (
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FutureImportation,
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Importation,
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ImportationFrom,
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StarImportation,
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SubmoduleImportation,
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)
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from pyflakes.test.harness import TestCase, skip, skipIf
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class TestImportationObject(TestCase):
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def test_import_basic(self):
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binding = Importation('a', None, 'a')
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assert binding.source_statement == 'import a'
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assert str(binding) == 'a'
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def test_import_as(self):
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binding = Importation('c', None, 'a')
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assert binding.source_statement == 'import a as c'
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assert str(binding) == 'a as c'
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def test_import_submodule(self):
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binding = SubmoduleImportation('a.b', None)
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assert binding.source_statement == 'import a.b'
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assert str(binding) == 'a.b'
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def test_import_submodule_as(self):
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# A submodule import with an as clause is not a SubmoduleImportation
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binding = Importation('c', None, 'a.b')
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assert binding.source_statement == 'import a.b as c'
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assert str(binding) == 'a.b as c'
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def test_import_submodule_as_source_name(self):
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binding = Importation('a', None, 'a.b')
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assert binding.source_statement == 'import a.b as a'
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assert str(binding) == 'a.b as a'
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def test_importfrom_relative(self):
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binding = ImportationFrom('a', None, '.', 'a')
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assert binding.source_statement == 'from . import a'
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assert str(binding) == '.a'
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def test_importfrom_relative_parent(self):
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binding = ImportationFrom('a', None, '..', 'a')
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assert binding.source_statement == 'from .. import a'
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assert str(binding) == '..a'
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def test_importfrom_relative_with_module(self):
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binding = ImportationFrom('b', None, '..a', 'b')
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assert binding.source_statement == 'from ..a import b'
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assert str(binding) == '..a.b'
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def test_importfrom_relative_with_module_as(self):
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binding = ImportationFrom('c', None, '..a', 'b')
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assert binding.source_statement == 'from ..a import b as c'
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assert str(binding) == '..a.b as c'
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def test_importfrom_member(self):
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binding = ImportationFrom('b', None, 'a', 'b')
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assert binding.source_statement == 'from a import b'
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assert str(binding) == 'a.b'
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def test_importfrom_submodule_member(self):
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binding = ImportationFrom('c', None, 'a.b', 'c')
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assert binding.source_statement == 'from a.b import c'
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assert str(binding) == 'a.b.c'
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def test_importfrom_member_as(self):
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binding = ImportationFrom('c', None, 'a', 'b')
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assert binding.source_statement == 'from a import b as c'
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assert str(binding) == 'a.b as c'
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def test_importfrom_submodule_member_as(self):
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binding = ImportationFrom('d', None, 'a.b', 'c')
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assert binding.source_statement == 'from a.b import c as d'
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assert str(binding) == 'a.b.c as d'
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def test_importfrom_star(self):
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binding = StarImportation('a.b', None)
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assert binding.source_statement == 'from a.b import *'
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assert str(binding) == 'a.b.*'
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def test_importfrom_star_relative(self):
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binding = StarImportation('.b', None)
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assert binding.source_statement == 'from .b import *'
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assert str(binding) == '.b.*'
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def test_importfrom_future(self):
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binding = FutureImportation('print_function', None, None)
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assert binding.source_statement == 'from __future__ import print_function'
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assert str(binding) == '__future__.print_function'
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def test_unusedImport_underscore(self):
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"""
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The magic underscore var should be reported as unused when used as an
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import alias.
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"""
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self.flakes('import fu as _', m.UnusedImport)
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class Test(TestCase):
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def test_unusedImport(self):
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self.flakes('import fu, bar', m.UnusedImport, m.UnusedImport)
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self.flakes('from baz import fu, bar', m.UnusedImport, m.UnusedImport)
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def test_unusedImport_relative(self):
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self.flakes('from . import fu', m.UnusedImport)
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self.flakes('from . import fu as baz', m.UnusedImport)
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self.flakes('from .. import fu', m.UnusedImport)
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self.flakes('from ... import fu', m.UnusedImport)
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self.flakes('from .. import fu as baz', m.UnusedImport)
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self.flakes('from .bar import fu', m.UnusedImport)
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self.flakes('from ..bar import fu', m.UnusedImport)
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self.flakes('from ...bar import fu', m.UnusedImport)
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self.flakes('from ...bar import fu as baz', m.UnusedImport)
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checker = self.flakes('from . import fu', m.UnusedImport)
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error = checker.messages[0]
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assert error.message == '%r imported but unused'
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assert error.message_args == ('.fu', )
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checker = self.flakes('from . import fu as baz', m.UnusedImport)
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error = checker.messages[0]
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assert error.message == '%r imported but unused'
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assert error.message_args == ('.fu as baz', )
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def test_aliasedImport(self):
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self.flakes('import fu as FU, bar as FU',
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m.RedefinedWhileUnused, m.UnusedImport)
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self.flakes('from moo import fu as FU, bar as FU',
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m.RedefinedWhileUnused, m.UnusedImport)
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def test_aliasedImportShadowModule(self):
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"""Imported aliases can shadow the source of the import."""
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self.flakes('from moo import fu as moo; moo')
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self.flakes('import fu as fu; fu')
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self.flakes('import fu.bar as fu; fu')
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def test_usedImport(self):
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self.flakes('import fu; print(fu)')
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self.flakes('from baz import fu; print(fu)')
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self.flakes('import fu; del fu')
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def test_usedImport_relative(self):
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self.flakes('from . import fu; assert fu')
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self.flakes('from .bar import fu; assert fu')
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self.flakes('from .. import fu; assert fu')
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self.flakes('from ..bar import fu as baz; assert baz')
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def test_redefinedWhileUnused(self):
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self.flakes('import fu; fu = 3', m.RedefinedWhileUnused)
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self.flakes('import fu; fu, bar = 3', m.RedefinedWhileUnused)
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self.flakes('import fu; [fu, bar] = 3', m.RedefinedWhileUnused)
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def test_redefinedIf(self):
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"""
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Test that importing a module twice within an if
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block does raise a warning.
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"""
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self.flakes('''
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i = 2
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if i==1:
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import os
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import os
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os.path''', m.RedefinedWhileUnused)
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def test_redefinedIfElse(self):
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"""
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Test that importing a module twice in if
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and else blocks does not raise a warning.
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"""
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self.flakes('''
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i = 2
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if i==1:
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import os
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else:
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import os
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os.path''')
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def test_redefinedTry(self):
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"""
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Test that importing a module twice in a try block
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does raise a warning.
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"""
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self.flakes('''
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try:
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import os
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import os
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except:
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pass
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os.path''', m.RedefinedWhileUnused)
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def test_redefinedTryExcept(self):
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"""
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Test that importing a module twice in a try
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and except block does not raise a warning.
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"""
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self.flakes('''
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try:
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import os
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except:
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import os
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os.path''')
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def test_redefinedTryNested(self):
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"""
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Test that importing a module twice using a nested
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try/except and if blocks does not issue a warning.
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"""
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self.flakes('''
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try:
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if True:
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if True:
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import os
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except:
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import os
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os.path''')
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def test_redefinedTryExceptMulti(self):
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self.flakes("""
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try:
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from aa import mixer
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except AttributeError:
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from bb import mixer
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except RuntimeError:
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from cc import mixer
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except:
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from dd import mixer
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mixer(123)
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""")
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def test_redefinedTryElse(self):
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self.flakes("""
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try:
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from aa import mixer
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except ImportError:
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pass
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else:
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from bb import mixer
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mixer(123)
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""", m.RedefinedWhileUnused)
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def test_redefinedTryExceptElse(self):
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self.flakes("""
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try:
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import funca
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except ImportError:
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from bb import funca
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from bb import funcb
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else:
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from bbb import funcb
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print(funca, funcb)
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""")
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def test_redefinedTryExceptFinally(self):
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self.flakes("""
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try:
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from aa import a
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except ImportError:
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from bb import a
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finally:
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a = 42
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print(a)
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""")
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def test_redefinedTryExceptElseFinally(self):
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self.flakes("""
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try:
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import b
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except ImportError:
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b = Ellipsis
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from bb import a
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else:
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from aa import a
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finally:
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a = 42
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print(a, b)
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""")
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def test_redefinedByFunction(self):
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self.flakes('''
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import fu
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def fu():
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pass
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''', m.RedefinedWhileUnused)
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def test_redefinedInNestedFunction(self):
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"""
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Test that shadowing a global name with a nested function definition
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generates a warning.
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"""
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self.flakes('''
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import fu
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def bar():
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def baz():
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def fu():
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pass
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''', m.RedefinedWhileUnused, m.UnusedImport)
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def test_redefinedInNestedFunctionTwice(self):
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"""
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Test that shadowing a global name with a nested function definition
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generates a warning.
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"""
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self.flakes('''
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import fu
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def bar():
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import fu
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def baz():
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def fu():
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pass
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''',
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m.RedefinedWhileUnused, m.RedefinedWhileUnused,
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m.UnusedImport, m.UnusedImport)
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def test_redefinedButUsedLater(self):
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"""
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Test that a global import which is redefined locally,
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but used later in another scope does not generate a warning.
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"""
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self.flakes('''
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import unittest, transport
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class GetTransportTestCase(unittest.TestCase):
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def test_get_transport(self):
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transport = 'transport'
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self.assertIsNotNone(transport)
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class TestTransportMethodArgs(unittest.TestCase):
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def test_send_defaults(self):
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transport.Transport()
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''')
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def test_redefinedByClass(self):
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self.flakes('''
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import fu
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class fu:
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pass
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''', m.RedefinedWhileUnused)
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def test_redefinedBySubclass(self):
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"""
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If an imported name is redefined by a class statement which also uses
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that name in the bases list, no warning is emitted.
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"""
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self.flakes('''
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from fu import bar
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class bar(bar):
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pass
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''')
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def test_redefinedInClass(self):
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"""
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Test that shadowing a global with a class attribute does not produce a
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warning.
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"""
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self.flakes('''
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import fu
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class bar:
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fu = 1
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print(fu)
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''')
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def test_importInClass(self):
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"""
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Test that import within class is a locally scoped attribute.
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"""
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self.flakes('''
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class bar:
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import fu
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''')
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self.flakes('''
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class bar:
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import fu
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fu
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''', m.UndefinedName)
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def test_usedInFunction(self):
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self.flakes('''
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import fu
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def fun():
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print(fu)
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''')
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def test_shadowedByParameter(self):
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self.flakes('''
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import fu
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def fun(fu):
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print(fu)
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''', m.UnusedImport, m.RedefinedWhileUnused)
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self.flakes('''
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import fu
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def fun(fu):
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print(fu)
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print(fu)
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''')
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def test_newAssignment(self):
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self.flakes('fu = None')
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def test_usedInGetattr(self):
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self.flakes('import fu; fu.bar.baz')
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self.flakes('import fu; "bar".fu.baz', m.UnusedImport)
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def test_usedInSlice(self):
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self.flakes('import fu; print(fu.bar[1:])')
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def test_usedInIfBody(self):
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self.flakes('''
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import fu
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if True: print(fu)
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''')
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def test_usedInIfConditional(self):
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self.flakes('''
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import fu
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if fu: pass
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''')
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def test_usedInElifConditional(self):
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self.flakes('''
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import fu
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if False: pass
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elif fu: pass
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''')
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def test_usedInElse(self):
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self.flakes('''
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import fu
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if False: pass
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else: print(fu)
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''')
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def test_usedInCall(self):
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self.flakes('import fu; fu.bar()')
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def test_usedInClass(self):
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self.flakes('''
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import fu
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class bar:
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bar = fu
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''')
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def test_usedInClassBase(self):
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self.flakes('''
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import fu
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class bar(object, fu.baz):
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pass
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''')
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def test_notUsedInNestedScope(self):
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self.flakes('''
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import fu
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def bleh():
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pass
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print(fu)
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''')
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def test_usedInFor(self):
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self.flakes('''
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import fu
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for bar in range(9):
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print(fu)
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''')
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def test_usedInForElse(self):
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self.flakes('''
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import fu
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for bar in range(10):
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pass
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else:
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print(fu)
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''')
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def test_redefinedByFor(self):
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self.flakes('''
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import fu
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for fu in range(2):
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pass
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''', m.ImportShadowedByLoopVar)
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def test_shadowedByFor(self):
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"""
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Test that shadowing a global name with a for loop variable generates a
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warning.
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"""
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self.flakes('''
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import fu
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fu.bar()
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for fu in ():
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pass
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''', m.ImportShadowedByLoopVar)
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|
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def test_shadowedByForDeep(self):
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"""
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Test that shadowing a global name with a for loop variable nested in a
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tuple unpack generates a warning.
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"""
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self.flakes('''
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import fu
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fu.bar()
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for (x, y, z, (a, b, c, (fu,))) in ():
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pass
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''', m.ImportShadowedByLoopVar)
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# Same with a list instead of a tuple
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self.flakes('''
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import fu
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fu.bar()
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for [x, y, z, (a, b, c, (fu,))] in ():
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pass
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''', m.ImportShadowedByLoopVar)
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def test_usedInReturn(self):
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self.flakes('''
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import fu
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def fun():
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return fu
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''')
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def test_usedInOperators(self):
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self.flakes('import fu; 3 + fu.bar')
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self.flakes('import fu; 3 % fu.bar')
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self.flakes('import fu; 3 - fu.bar')
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self.flakes('import fu; 3 * fu.bar')
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self.flakes('import fu; 3 ** fu.bar')
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self.flakes('import fu; 3 / fu.bar')
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self.flakes('import fu; 3 // fu.bar')
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self.flakes('import fu; -fu.bar')
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self.flakes('import fu; ~fu.bar')
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self.flakes('import fu; 1 == fu.bar')
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self.flakes('import fu; 1 | fu.bar')
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self.flakes('import fu; 1 & fu.bar')
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self.flakes('import fu; 1 ^ fu.bar')
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self.flakes('import fu; 1 >> fu.bar')
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self.flakes('import fu; 1 << fu.bar')
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def test_usedInAssert(self):
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self.flakes('import fu; assert fu.bar')
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def test_usedInSubscript(self):
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self.flakes('import fu; fu.bar[1]')
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def test_usedInLogic(self):
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self.flakes('import fu; fu and False')
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self.flakes('import fu; fu or False')
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self.flakes('import fu; not fu.bar')
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def test_usedInList(self):
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self.flakes('import fu; [fu]')
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def test_usedInTuple(self):
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self.flakes('import fu; (fu,)')
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def test_usedInTry(self):
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self.flakes('''
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import fu
|
|
try: fu
|
|
except: pass
|
|
''')
|
|
|
|
def test_usedInExcept(self):
|
|
self.flakes('''
|
|
import fu
|
|
try: fu
|
|
except: pass
|
|
''')
|
|
|
|
def test_redefinedByExcept(self):
|
|
expected = [m.RedefinedWhileUnused]
|
|
if version_info >= (3,):
|
|
# The exc variable is unused inside the exception handler.
|
|
expected.append(m.UnusedVariable)
|
|
self.flakes('''
|
|
import fu
|
|
try: pass
|
|
except Exception as fu: pass
|
|
''', *expected)
|
|
|
|
def test_usedInRaise(self):
|
|
self.flakes('''
|
|
import fu
|
|
raise fu.bar
|
|
''')
|
|
|
|
def test_usedInYield(self):
|
|
self.flakes('''
|
|
import fu
|
|
def gen():
|
|
yield fu
|
|
''')
|
|
|
|
def test_usedInDict(self):
|
|
self.flakes('import fu; {fu:None}')
|
|
self.flakes('import fu; {1:fu}')
|
|
|
|
def test_usedInParameterDefault(self):
|
|
self.flakes('''
|
|
import fu
|
|
def f(bar=fu):
|
|
pass
|
|
''')
|
|
|
|
def test_usedInAttributeAssign(self):
|
|
self.flakes('import fu; fu.bar = 1')
|
|
|
|
def test_usedInKeywordArg(self):
|
|
self.flakes('import fu; fu.bar(stuff=fu)')
|
|
|
|
def test_usedInAssignment(self):
|
|
self.flakes('import fu; bar=fu')
|
|
self.flakes('import fu; n=0; n+=fu')
|
|
|
|
def test_usedInListComp(self):
|
|
self.flakes('import fu; [fu for _ in range(1)]')
|
|
self.flakes('import fu; [1 for _ in range(1) if fu]')
|
|
|
|
@skipIf(version_info >= (3,),
|
|
'in Python 3 list comprehensions execute in a separate scope')
|
|
def test_redefinedByListComp(self):
|
|
self.flakes('import fu; [1 for fu in range(1)]',
|
|
m.RedefinedInListComp)
|
|
|
|
def test_usedInTryFinally(self):
|
|
self.flakes('''
|
|
import fu
|
|
try: pass
|
|
finally: fu
|
|
''')
|
|
|
|
self.flakes('''
|
|
import fu
|
|
try: fu
|
|
finally: pass
|
|
''')
|
|
|
|
def test_usedInWhile(self):
|
|
self.flakes('''
|
|
import fu
|
|
while 0:
|
|
fu
|
|
''')
|
|
|
|
self.flakes('''
|
|
import fu
|
|
while fu: pass
|
|
''')
|
|
|
|
def test_usedInGlobal(self):
|
|
"""
|
|
A 'global' statement shadowing an unused import should not prevent it
|
|
from being reported.
|
|
"""
|
|
self.flakes('''
|
|
import fu
|
|
def f(): global fu
|
|
''', m.UnusedImport)
|
|
|
|
def test_usedAndGlobal(self):
|
|
"""
|
|
A 'global' statement shadowing a used import should not cause it to be
|
|
reported as unused.
|
|
"""
|
|
self.flakes('''
|
|
import foo
|
|
def f(): global foo
|
|
def g(): foo.is_used()
|
|
''')
|
|
|
|
def test_assignedToGlobal(self):
|
|
"""
|
|
Binding an import to a declared global should not cause it to be
|
|
reported as unused.
|
|
"""
|
|
self.flakes('''
|
|
def f(): global foo; import foo
|
|
def g(): foo.is_used()
|
|
''')
|
|
|
|
@skipIf(version_info >= (3,), 'deprecated syntax')
|
|
def test_usedInBackquote(self):
|
|
self.flakes('import fu; `fu`')
|
|
|
|
def test_usedInExec(self):
|
|
if version_info < (3,):
|
|
exec_stmt = 'exec "print 1" in fu.bar'
|
|
else:
|
|
exec_stmt = 'exec("print(1)", fu.bar)'
|
|
self.flakes('import fu; %s' % exec_stmt)
|
|
|
|
def test_usedInLambda(self):
|
|
self.flakes('import fu; lambda: fu')
|
|
|
|
def test_shadowedByLambda(self):
|
|
self.flakes('import fu; lambda fu: fu',
|
|
m.UnusedImport, m.RedefinedWhileUnused)
|
|
self.flakes('import fu; lambda fu: fu\nfu()')
|
|
|
|
def test_usedInSliceObj(self):
|
|
self.flakes('import fu; "meow"[::fu]')
|
|
|
|
def test_unusedInNestedScope(self):
|
|
self.flakes('''
|
|
def bar():
|
|
import fu
|
|
fu
|
|
''', m.UnusedImport, m.UndefinedName)
|
|
|
|
def test_methodsDontUseClassScope(self):
|
|
self.flakes('''
|
|
class bar:
|
|
import fu
|
|
def fun(self):
|
|
fu
|
|
''', m.UndefinedName)
|
|
|
|
def test_nestedFunctionsNestScope(self):
|
|
self.flakes('''
|
|
def a():
|
|
def b():
|
|
fu
|
|
import fu
|
|
''')
|
|
|
|
def test_nestedClassAndFunctionScope(self):
|
|
self.flakes('''
|
|
def a():
|
|
import fu
|
|
class b:
|
|
def c(self):
|
|
print(fu)
|
|
''')
|
|
|
|
def test_importStar(self):
|
|
"""Use of import * at module level is reported."""
|
|
self.flakes('from fu import *', m.ImportStarUsed, m.UnusedImport)
|
|
self.flakes('''
|
|
try:
|
|
from fu import *
|
|
except:
|
|
pass
|
|
''', m.ImportStarUsed, m.UnusedImport)
|
|
|
|
checker = self.flakes('from fu import *',
|
|
m.ImportStarUsed, m.UnusedImport)
|
|
|
|
error = checker.messages[0]
|
|
assert error.message.startswith("'from %s import *' used; unable ")
|
|
assert error.message_args == ('fu', )
|
|
|
|
error = checker.messages[1]
|
|
assert error.message == '%r imported but unused'
|
|
assert error.message_args == ('fu.*', )
|
|
|
|
def test_importStar_relative(self):
|
|
"""Use of import * from a relative import is reported."""
|
|
self.flakes('from .fu import *', m.ImportStarUsed, m.UnusedImport)
|
|
self.flakes('''
|
|
try:
|
|
from .fu import *
|
|
except:
|
|
pass
|
|
''', m.ImportStarUsed, m.UnusedImport)
|
|
|
|
checker = self.flakes('from .fu import *',
|
|
m.ImportStarUsed, m.UnusedImport)
|
|
|
|
error = checker.messages[0]
|
|
assert error.message.startswith("'from %s import *' used; unable ")
|
|
assert error.message_args == ('.fu', )
|
|
|
|
error = checker.messages[1]
|
|
assert error.message == '%r imported but unused'
|
|
assert error.message_args == ('.fu.*', )
|
|
|
|
checker = self.flakes('from .. import *',
|
|
m.ImportStarUsed, m.UnusedImport)
|
|
|
|
error = checker.messages[0]
|
|
assert error.message.startswith("'from %s import *' used; unable ")
|
|
assert error.message_args == ('..', )
|
|
|
|
error = checker.messages[1]
|
|
assert error.message == '%r imported but unused'
|
|
assert error.message_args == ('from .. import *', )
|
|
|
|
@skipIf(version_info < (3,),
|
|
'import * below module level is a warning on Python 2')
|
|
def test_localImportStar(self):
|
|
"""import * is only allowed at module level."""
|
|
self.flakes('''
|
|
def a():
|
|
from fu import *
|
|
''', m.ImportStarNotPermitted)
|
|
self.flakes('''
|
|
class a:
|
|
from fu import *
|
|
''', m.ImportStarNotPermitted)
|
|
|
|
checker = self.flakes('''
|
|
class a:
|
|
from .. import *
|
|
''', m.ImportStarNotPermitted)
|
|
error = checker.messages[0]
|
|
assert error.message == "'from %s import *' only allowed at module level"
|
|
assert error.message_args == ('..', )
|
|
|
|
@skipIf(version_info > (3,),
|
|
'import * below module level is an error on Python 3')
|
|
def test_importStarNested(self):
|
|
"""All star imports are marked as used by an undefined variable."""
|
|
self.flakes('''
|
|
from fu import *
|
|
def f():
|
|
from bar import *
|
|
x
|
|
''', m.ImportStarUsed, m.ImportStarUsed, m.ImportStarUsage)
|
|
|
|
def test_packageImport(self):
|
|
"""
|
|
If a dotted name is imported and used, no warning is reported.
|
|
"""
|
|
self.flakes('''
|
|
import fu.bar
|
|
fu.bar
|
|
''')
|
|
|
|
def test_unusedPackageImport(self):
|
|
"""
|
|
If a dotted name is imported and not used, an unused import warning is
|
|
reported.
|
|
"""
|
|
self.flakes('import fu.bar', m.UnusedImport)
|
|
|
|
def test_duplicateSubmoduleImport(self):
|
|
"""
|
|
If a submodule of a package is imported twice, an unused import warning
|
|
and a redefined while unused warning are reported.
|
|
"""
|
|
self.flakes('''
|
|
import fu.bar, fu.bar
|
|
fu.bar
|
|
''', m.RedefinedWhileUnused)
|
|
self.flakes('''
|
|
import fu.bar
|
|
import fu.bar
|
|
fu.bar
|
|
''', m.RedefinedWhileUnused)
|
|
|
|
def test_differentSubmoduleImport(self):
|
|
"""
|
|
If two different submodules of a package are imported, no duplicate
|
|
import warning is reported for the package.
|
|
"""
|
|
self.flakes('''
|
|
import fu.bar, fu.baz
|
|
fu.bar, fu.baz
|
|
''')
|
|
self.flakes('''
|
|
import fu.bar
|
|
import fu.baz
|
|
fu.bar, fu.baz
|
|
''')
|
|
|
|
def test_used_package_with_submodule_import(self):
|
|
"""
|
|
Usage of package marks submodule imports as used.
|
|
"""
|
|
self.flakes('''
|
|
import fu
|
|
import fu.bar
|
|
fu.x
|
|
''')
|
|
|
|
self.flakes('''
|
|
import fu.bar
|
|
import fu
|
|
fu.x
|
|
''')
|
|
|
|
def test_used_package_with_submodule_import_of_alias(self):
|
|
"""
|
|
Usage of package by alias marks submodule imports as used.
|
|
"""
|
|
self.flakes('''
|
|
import foo as f
|
|
import foo.bar
|
|
f.bar.do_something()
|
|
''')
|
|
|
|
self.flakes('''
|
|
import foo as f
|
|
import foo.bar.blah
|
|
f.bar.blah.do_something()
|
|
''')
|
|
|
|
def test_unused_package_with_submodule_import(self):
|
|
"""
|
|
When a package and its submodule are imported, only report once.
|
|
"""
|
|
checker = self.flakes('''
|
|
import fu
|
|
import fu.bar
|
|
''', m.UnusedImport)
|
|
error = checker.messages[0]
|
|
assert error.message == '%r imported but unused'
|
|
assert error.message_args == ('fu.bar', )
|
|
assert error.lineno == 5 if self.withDoctest else 3
|
|
|
|
def test_assignRHSFirst(self):
|
|
self.flakes('import fu; fu = fu')
|
|
self.flakes('import fu; fu, bar = fu')
|
|
self.flakes('import fu; [fu, bar] = fu')
|
|
self.flakes('import fu; fu += fu')
|
|
|
|
def test_tryingMultipleImports(self):
|
|
self.flakes('''
|
|
try:
|
|
import fu
|
|
except ImportError:
|
|
import bar as fu
|
|
fu
|
|
''')
|
|
|
|
def test_nonGlobalDoesNotRedefine(self):
|
|
self.flakes('''
|
|
import fu
|
|
def a():
|
|
fu = 3
|
|
return fu
|
|
fu
|
|
''')
|
|
|
|
def test_functionsRunLater(self):
|
|
self.flakes('''
|
|
def a():
|
|
fu
|
|
import fu
|
|
''')
|
|
|
|
def test_functionNamesAreBoundNow(self):
|
|
self.flakes('''
|
|
import fu
|
|
def fu():
|
|
fu
|
|
fu
|
|
''', m.RedefinedWhileUnused)
|
|
|
|
def test_ignoreNonImportRedefinitions(self):
|
|
self.flakes('a = 1; a = 2')
|
|
|
|
@skip("todo")
|
|
def test_importingForImportError(self):
|
|
self.flakes('''
|
|
try:
|
|
import fu
|
|
except ImportError:
|
|
pass
|
|
''')
|
|
|
|
def test_importedInClass(self):
|
|
"""Imports in class scope can be used through self."""
|
|
self.flakes('''
|
|
class c:
|
|
import i
|
|
def __init__(self):
|
|
self.i
|
|
''')
|
|
|
|
def test_importUsedInMethodDefinition(self):
|
|
"""
|
|
Method named 'foo' with default args referring to module named 'foo'.
|
|
"""
|
|
self.flakes('''
|
|
import foo
|
|
|
|
class Thing(object):
|
|
def foo(self, parser=foo.parse_foo):
|
|
pass
|
|
''')
|
|
|
|
def test_futureImport(self):
|
|
"""__future__ is special."""
|
|
self.flakes('from __future__ import division')
|
|
self.flakes('''
|
|
"docstring is allowed before future import"
|
|
from __future__ import division
|
|
''')
|
|
|
|
def test_futureImportFirst(self):
|
|
"""
|
|
__future__ imports must come before anything else.
|
|
"""
|
|
self.flakes('''
|
|
x = 5
|
|
from __future__ import division
|
|
''', m.LateFutureImport)
|
|
self.flakes('''
|
|
from foo import bar
|
|
from __future__ import division
|
|
bar
|
|
''', m.LateFutureImport)
|
|
|
|
def test_futureImportUsed(self):
|
|
"""__future__ is special, but names are injected in the namespace."""
|
|
self.flakes('''
|
|
from __future__ import division
|
|
from __future__ import print_function
|
|
|
|
assert print_function is not division
|
|
''')
|
|
|
|
def test_futureImportUndefined(self):
|
|
"""Importing undefined names from __future__ fails."""
|
|
self.flakes('''
|
|
from __future__ import print_statement
|
|
''', m.FutureFeatureNotDefined)
|
|
|
|
def test_futureImportStar(self):
|
|
"""Importing '*' from __future__ fails."""
|
|
self.flakes('''
|
|
from __future__ import *
|
|
''', m.FutureFeatureNotDefined)
|
|
|
|
|
|
class TestSpecialAll(TestCase):
|
|
"""
|
|
Tests for suppression of unused import warnings by C{__all__}.
|
|
"""
|
|
def test_ignoredInFunction(self):
|
|
"""
|
|
An C{__all__} definition does not suppress unused import warnings in a
|
|
function scope.
|
|
"""
|
|
self.flakes('''
|
|
def foo():
|
|
import bar
|
|
__all__ = ["bar"]
|
|
''', m.UnusedImport, m.UnusedVariable)
|
|
|
|
def test_ignoredInClass(self):
|
|
"""
|
|
An C{__all__} definition in a class does not suppress unused import warnings.
|
|
"""
|
|
self.flakes('''
|
|
import bar
|
|
class foo:
|
|
__all__ = ["bar"]
|
|
''', m.UnusedImport)
|
|
|
|
def test_warningSuppressed(self):
|
|
"""
|
|
If a name is imported and unused but is named in C{__all__}, no warning
|
|
is reported.
|
|
"""
|
|
self.flakes('''
|
|
import foo
|
|
__all__ = ["foo"]
|
|
''')
|
|
self.flakes('''
|
|
import foo
|
|
__all__ = ("foo",)
|
|
''')
|
|
|
|
def test_augmentedAssignment(self):
|
|
"""
|
|
The C{__all__} variable is defined incrementally.
|
|
"""
|
|
self.flakes('''
|
|
import a
|
|
import c
|
|
__all__ = ['a']
|
|
__all__ += ['b']
|
|
if 1 < 3:
|
|
__all__ += ['c', 'd']
|
|
''', m.UndefinedExport, m.UndefinedExport)
|
|
|
|
def test_concatenationAssignment(self):
|
|
"""
|
|
The C{__all__} variable is defined through list concatenation.
|
|
"""
|
|
self.flakes('''
|
|
import sys
|
|
__all__ = ['a'] + ['b'] + ['c']
|
|
''', m.UndefinedExport, m.UndefinedExport, m.UndefinedExport, m.UnusedImport)
|
|
|
|
def test_all_with_attributes(self):
|
|
self.flakes('''
|
|
from foo import bar
|
|
__all__ = [bar.__name__]
|
|
''')
|
|
|
|
def test_all_with_names(self):
|
|
# not actually valid, but shouldn't produce a crash
|
|
self.flakes('''
|
|
from foo import bar
|
|
__all__ = [bar]
|
|
''')
|
|
|
|
def test_all_with_attributes_added(self):
|
|
self.flakes('''
|
|
from foo import bar
|
|
from bar import baz
|
|
__all__ = [bar.__name__] + [baz.__name__]
|
|
''')
|
|
|
|
def test_all_mixed_attributes_and_strings(self):
|
|
self.flakes('''
|
|
from foo import bar
|
|
from foo import baz
|
|
__all__ = ['bar', baz.__name__]
|
|
''')
|
|
|
|
def test_unboundExported(self):
|
|
"""
|
|
If C{__all__} includes a name which is not bound, a warning is emitted.
|
|
"""
|
|
self.flakes('''
|
|
__all__ = ["foo"]
|
|
''', m.UndefinedExport)
|
|
|
|
# Skip this in __init__.py though, since the rules there are a little
|
|
# different.
|
|
for filename in ["foo/__init__.py", "__init__.py"]:
|
|
self.flakes('''
|
|
__all__ = ["foo"]
|
|
''', filename=filename)
|
|
|
|
def test_importStarExported(self):
|
|
"""
|
|
Report undefined if import * is used
|
|
"""
|
|
self.flakes('''
|
|
from math import *
|
|
__all__ = ['sin', 'cos']
|
|
csc(1)
|
|
''', m.ImportStarUsed, m.ImportStarUsage, m.ImportStarUsage, m.ImportStarUsage)
|
|
|
|
def test_importStarNotExported(self):
|
|
"""Report unused import when not needed to satisfy __all__."""
|
|
self.flakes('''
|
|
from foolib import *
|
|
a = 1
|
|
__all__ = ['a']
|
|
''', m.ImportStarUsed, m.UnusedImport)
|
|
|
|
def test_usedInGenExp(self):
|
|
"""
|
|
Using a global in a generator expression results in no warnings.
|
|
"""
|
|
self.flakes('import fu; (fu for _ in range(1))')
|
|
self.flakes('import fu; (1 for _ in range(1) if fu)')
|
|
|
|
def test_redefinedByGenExp(self):
|
|
"""
|
|
Re-using a global name as the loop variable for a generator
|
|
expression results in a redefinition warning.
|
|
"""
|
|
self.flakes('import fu; (1 for fu in range(1))',
|
|
m.RedefinedWhileUnused, m.UnusedImport)
|
|
|
|
def test_usedAsDecorator(self):
|
|
"""
|
|
Using a global name in a decorator statement results in no warnings,
|
|
but using an undefined name in a decorator statement results in an
|
|
undefined name warning.
|
|
"""
|
|
self.flakes('''
|
|
from interior import decorate
|
|
@decorate
|
|
def f():
|
|
return "hello"
|
|
''')
|
|
|
|
self.flakes('''
|
|
from interior import decorate
|
|
@decorate('value')
|
|
def f():
|
|
return "hello"
|
|
''')
|
|
|
|
self.flakes('''
|
|
@decorate
|
|
def f():
|
|
return "hello"
|
|
''', m.UndefinedName)
|
|
|
|
def test_usedAsClassDecorator(self):
|
|
"""
|
|
Using an imported name as a class decorator results in no warnings,
|
|
but using an undefined name as a class decorator results in an
|
|
undefined name warning.
|
|
"""
|
|
self.flakes('''
|
|
from interior import decorate
|
|
@decorate
|
|
class foo:
|
|
pass
|
|
''')
|
|
|
|
self.flakes('''
|
|
from interior import decorate
|
|
@decorate("foo")
|
|
class bar:
|
|
pass
|
|
''')
|
|
|
|
self.flakes('''
|
|
@decorate
|
|
class foo:
|
|
pass
|
|
''', m.UndefinedName)
|