mirror of https://github.com/python/cpython
131 lines
4.8 KiB
Python
131 lines
4.8 KiB
Python
from importlib import _bootstrap
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from .. import abc
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from . import util as source_util
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import os
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import py_compile
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import unittest
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import warnings
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class FinderTests(abc.FinderTests):
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"""For a top-level module, it should just be found directly in the
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directory being searched. This is true for a directory with source
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[top-level source], bytecode [top-level bc], or both [top-level both].
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There is also the possibility that it is a package [top-level package], in
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which case there will be a directory with the module name and an
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__init__.py file. If there is a directory without an __init__.py an
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ImportWarning is returned [empty dir].
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For sub-modules and sub-packages, the same happens as above but only use
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the tail end of the name [sub module] [sub package] [sub empty].
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When there is a conflict between a package and module having the same name
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in the same directory, the package wins out [package over module]. This is
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so that imports of modules within the package can occur rather than trigger
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an import error.
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When there is a package and module with the same name, always pick the
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package over the module [package over module]. This is so that imports from
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the package have the possibility of succeeding.
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"""
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def import_(self, root, module):
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finder = _bootstrap._PyPycFileFinder(root)
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return finder.find_module(module)
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def run_test(self, test, create=None, *, compile_=None, unlink=None):
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"""Test the finding of 'test' with the creation of modules listed in
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'create'.
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Any names listed in 'compile_' are byte-compiled. Modules
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listed in 'unlink' have their source files deleted.
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"""
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if create is None:
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create = {test}
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with source_util.create_modules(*create) as mapping:
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if compile_:
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for name in compile_:
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py_compile.compile(mapping[name])
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if unlink:
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for name in unlink:
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os.unlink(mapping[name])
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loader = self.import_(mapping['.root'], test)
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self.assertTrue(hasattr(loader, 'load_module'))
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return loader
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def test_module(self):
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# [top-level source]
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self.run_test('top_level')
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# [top-level bc]
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self.run_test('top_level', compile_={'top_level'}, unlink={'top_level'})
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# [top-level both]
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self.run_test('top_level', compile_={'top_level'})
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# [top-level package]
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def test_package(self):
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# Source.
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self.run_test('pkg', {'pkg.__init__'})
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# Bytecode.
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self.run_test('pkg', {'pkg.__init__'}, compile_={'pkg.__init__'},
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unlink={'pkg.__init__'})
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# Both.
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self.run_test('pkg', {'pkg.__init__'}, compile_={'pkg.__init__'})
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# [sub module]
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def test_module_in_package(self):
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with source_util.create_modules('pkg.__init__', 'pkg.sub') as mapping:
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pkg_dir = os.path.dirname(mapping['pkg.__init__'])
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loader = self.import_(pkg_dir, 'pkg.sub')
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self.assertTrue(hasattr(loader, 'load_module'))
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# [sub package]
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def test_package_in_package(self):
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context = source_util.create_modules('pkg.__init__', 'pkg.sub.__init__')
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with context as mapping:
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pkg_dir = os.path.dirname(mapping['pkg.__init__'])
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loader = self.import_(pkg_dir, 'pkg.sub')
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self.assertTrue(hasattr(loader, 'load_module'))
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# [sub empty]
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def test_empty_sub_directory(self):
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context = source_util.create_modules('pkg.__init__', 'pkg.sub.__init__')
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with warnings.catch_warnings():
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warnings.simplefilter("error", ImportWarning)
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with context as mapping:
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os.unlink(mapping['pkg.sub.__init__'])
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pkg_dir = os.path.dirname(mapping['pkg.__init__'])
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self.assertRaises(ImportWarning, self.import_, pkg_dir,
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'pkg.sub')
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# [package over modules]
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def test_package_over_module(self):
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# XXX This is not a blackbox test!
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name = '_temp'
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loader = self.run_test(name, {'{0}.__init__'.format(name), name})
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self.assertTrue('__init__' in loader._base_path)
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def test_failure(self):
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with source_util.create_modules('blah') as mapping:
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nothing = self.import_(mapping['.root'], 'sdfsadsadf')
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self.assertTrue(nothing is None)
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# [empty dir]
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def test_empty_dir(self):
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with warnings.catch_warnings():
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warnings.simplefilter("error", ImportWarning)
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self.assertRaises(ImportWarning, self.run_test, 'pkg',
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{'pkg.__init__'}, unlink={'pkg.__init__'})
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def test_main():
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from test.support import run_unittest
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run_unittest(FinderTests)
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if __name__ == '__main__':
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test_main()
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