test_compute_build_graph.py 文件源码

def test_resolve_cyclical_build_test_dependency():
    g = nx.DiGraph()
    g.add_node('build-a')
    g.add_node('build-b')
    g.add_node('test-a')
    g.add_node('test-b')
    # normal test after build dependencies
    g.add_edge('build-a', 'test-a')
    # this one will shift from depending on build-b to depending on test-a, which depends on build-b
    g.add_edge('build-b', 'test-b')
    # the build-time dependence of B on A.
    #     This one has to be removed.  build-b instead must depend on build-a
    g.add_edge('test-a', 'build-b')
    # the runtime dependency of A on B.  This one stays.
    g.add_edge('build-b', 'test-a')

    compute_build_graph.reorder_cyclical_test_dependencies(g)
    assert not ('test-a', 'build-b') in g.edges()
    assert not ('build-b', 'test-b') in g.edges()
    assert ('test-a', 'test-b') in g.edges()
    assert ('build-b', 'test-a') in g.edges()