Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use stable_topological_sort method in tox

Best Python code snippet using tox_python

utils.py

Source:utils.py

...11        if item_key < key(cur):12            coll.insert(idx, item)13            return14    coll.insert(len(coll), item)15def stable_topological_sort(items, partial_order):16    """Perform topological sort.17       items is a list or iterator of items to be sorted.18       partial_order is a list or iterator of pairs. If pair (a,b) is in it, it means19       that item a should appear before item b.20       Returns a list of the items in one of the possible orders, or raises21       LoopError if partial_order contains a loop.22       This is a stable sort so the relative order of the elements are kept.23    >>> list(stable_topological_sort(['a', 'b', 'c', 'd'], [('a', 'c')]))24    ['a', 'b', 'c', 'd']25    >>> list(stable_topological_sort(['a', 'b', 'c', 'd'], [('a', 'c'), ('b', 'c')]))26    ['a', 'b', 'c', 'd']27    >>> list(stable_topological_sort(['a', 'b', 'c', 'd'], [('a', 'c'), ('b', 'c'), ('d', 'c')]))28    ['a', 'b', 'd', 'c']29    >>> list(stable_topological_sort(['a', 'b', 'c', 'd'], [('a', 'c'), ('b', 'c'), ('d', 'c'), ('d', 'a')]))30    ['b', 'd', 'a', 'c']31    >>> list(stable_topological_sort(['b', 'a', 'c', 'd'], [('a', 'c'), ('b', 'c')]))32    ['b', 'a', 'c', 'd']33    >>> list(stable_topological_sort(['a', 'b', 'c', 'd'], [('a', 'c'), ('b', 'c'), ('b', 'a')]))34    ['b', 'a', 'c', 'd']35    >>> list(stable_topological_sort(['a', 'b', 'c', 'd'], [('a', 'c'), ('b', 'c'), ('c', 'd'), ('d', 'a')]))36    Traceback (most recent call last):37        ...38    LoopError: Loop in DAG, cannot sort39    """40    graph = {}41    for idx, item in enumerate(items):42        if item not in graph:43            graph[item] = [0, idx]44    for a,b in partial_order:45        graph[a].append(b)46        graph[b][0] += 147    roots = [(node, info[1]) for (node, info) in graph.items() if info[0] == 0]48    roots.sort(key=lambda i: i[1])49    while roots:...

test_graph.py

Source:test_graph.py

...3from tox.util.graph import stable_topological_sort4def test_topological_order_specified_only():5    graph = OrderedDict()6    graph["A"] = "B", "C"7    result = stable_topological_sort(graph)8    assert result == ["A"]9def test_topological_order():10    graph = OrderedDict()11    graph["A"] = "B", "C"12    graph["B"] = ()13    graph["C"] = ()14    result = stable_topological_sort(graph)15    assert result == ["B", "C", "A"]16def test_topological_order_cycle():17    graph = OrderedDict()18    graph["A"] = "B", "C"19    graph["B"] = ("A",)20    with pytest.raises(ValueError, match="A | B"):21        stable_topological_sort(graph)22def test_topological_complex():23    graph = OrderedDict()24    graph["A"] = "B", "C"25    graph["B"] = "C", "D"26    graph["C"] = ("D",)27    graph["D"] = ()28    result = stable_topological_sort(graph)29    assert result == ["D", "C", "B", "A"]30def test_two_sub_graph():31    graph = OrderedDict()32    graph["F"] = ()33    graph["E"] = ()34    graph["D"] = "E", "F"35    graph["A"] = "B", "C"36    graph["B"] = ()37    graph["C"] = ()38    result = stable_topological_sort(graph)39    assert result == ["F", "E", "D", "B", "C", "A"]40def test_two_sub_graph_circle():41    graph = OrderedDict()42    graph["F"] = ()43    graph["E"] = ()44    graph["D"] = "E", "F"45    graph["A"] = "B", "C"46    graph["B"] = ("A",)47    graph["C"] = ()48    with pytest.raises(ValueError, match="A | B"):...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.