test_resources.py 文件源码

def test_marker_evaluation_with_multiple_extras(self):
        ad = pkg_resources.Environment([])
        ws = WorkingSet([])
        # Metadata needs to be native strings due to cStringIO behaviour in
        # 2.6, so use str().
        Foo = Distribution.from_filename(
            "/foo_dir/Foo-1.2.dist-info",
            metadata=Metadata(("METADATA", str("Provides-Extra: baz\n"
                               "Requires-Dist: quux; extra=='baz'\n"
                               "Provides-Extra: bar\n"
                               "Requires-Dist: fred; extra=='bar'\n")))
        )
        ad.add(Foo)
        quux = Distribution.from_filename("/foo_dir/quux-1.0.dist-info")
        ad.add(quux)
        fred = Distribution.from_filename("/foo_dir/fred-0.1.dist-info")
        ad.add(fred)
        res = list(ws.resolve(parse_requirements("Foo[baz,bar]"), ad))
        assert sorted(res) == [fred, quux, Foo]