

def test_finder_only_installs_stable_releases(data):
    '\n    Test PackageFinder only accepts stable versioned releases by default.\n    '
    req = InstallRequirement.from_line('bar', None)
    finder = PackageFinder([], [data.index_url('pre')], session=PipSession())
    link = finder.find_requirement(req, False)
    assert link.url.endswith('bar-1.0.tar.gz'), link.url
    links = ['https://foo/bar-1.0.tar.gz', 'https://foo/bar-2.0b1.tar.gz']
    finder = PackageFinder(links, [], session=PipSession())
    with patch.object(finder, '_get_pages', (lambda x, y: [])):
        link = finder.find_requirement(req, False)
        assert (link.url == 'https://foo/bar-1.0.tar.gz')
    links.reverse()
    finder = PackageFinder(links, [], session=PipSession())
    with patch.object(finder, '_get_pages', (lambda x, y: [])):
        link = finder.find_requirement(req, False)
        assert (link.url == 'https://foo/bar-1.0.tar.gz')

dataset/ETHPy150Open pypa/pip/tests/unit/test_finder.py test_finder_only_installs_stable_releases/original