55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
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# coding: utf-8
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from __future__ import unicode_literals
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import unittest
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import packaging.requirements
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import packaging.version
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from . import fixtures
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from .. import (
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Distribution,
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_compat,
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version,
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)
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class IntegrationTests(fixtures.DistInfoPkg, unittest.TestCase):
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def test_package_spec_installed(self):
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"""
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Illustrate the recommended procedure to determine if
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a specified version of a package is installed.
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"""
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def is_installed(package_spec):
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req = packaging.requirements.Requirement(package_spec)
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return version(req.name) in req.specifier
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assert is_installed('distinfo-pkg==1.0')
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assert is_installed('distinfo-pkg>=1.0,<2.0')
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assert not is_installed('distinfo-pkg<1.0')
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class FinderTests(fixtures.Fixtures, unittest.TestCase):
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def test_finder_without_module(self):
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class ModuleFreeFinder(fixtures.NullFinder):
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"""
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A finder without an __module__ attribute
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"""
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def __getattribute__(self, name):
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if name == '__module__':
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raise AttributeError(name)
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return super().__getattribute__(name)
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self.fixtures.enter_context(
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fixtures.install_finder(ModuleFreeFinder()))
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_compat.disable_stdlib_finder()
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class LocalProjectTests(fixtures.LocalPackage, unittest.TestCase):
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def test_find_local(self):
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dist = Distribution._local()
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assert dist.metadata['Name'] == 'local-pkg'
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assert dist.version == '2.0.1'
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