def testShortCycle(self):
a = Action(lambda: 0, "a")
b = Action(lambda: 0, "b")
a.addDependency(b)
with self.assertRaises(Exception) as cm:
b.addDependency(a)
self.assertEqual(cm.exception.args[0], "Dependency cycle")
def testGetDependenciesAndLabelsAreNotOnlyEqualButSame(self):
bLabel = ("b",)
a = Action(lambda: 0, "a")
b = Action(lambda: 0, bLabel)
a.addDependency(b)
otherB, = a.getDependencies()
self.assertIs(otherB, b)
self.assertIs(otherB.label, bLabel)
def testLongCycle(self):
a = Action(lambda: 0, "a")
b = Action(lambda: 0, "b")
c = Action(lambda: 0, "c")
d = Action(lambda: 0, "d")
e = Action(lambda: 0, "e")
a.addDependency(b)
b.addDependency(c)
c.addDependency(d)
d.addDependency(e)
with self.assertRaises(Exception) as cm:
e.addDependency(a)
self.assertEqual(cm.exception.args[0], "Dependency cycle")
def testDeepDependencyWithDuplicatedLabel(self):
a = Action(lambda: 0, "label")
b = Action(lambda: 0, "label")
c = Action(lambda: 0, "label")
d = Action(lambda: 0, "label")
a.addDependency(b)
b.addDependency(c)
c.addDependency(d)
self.assertEqual(a.getPreview(), ["label", "label", "label", "label"])
def testDeepDependency(self):
a = Action(lambda: 0, "a")
b = Action(lambda: 0, "b")
c = Action(lambda: 0, "c")
d = Action(lambda: 0, "d")
a.addDependency(b)
b.addDependency(c)
c.addDependency(d)
self.assertEqual(a.getPreview(), ["d", "c", "b", "a"])
def testDiamondDependency(self):
# a
# / \
# b c
# \ /
# d
a = Action(lambda: 0, "a")
b = Action(lambda: 0, "b")
c = Action(lambda: 0, "c")
d = Action(lambda: 0, "d")
a.addDependency(b)
a.addDependency(c)
b.addDependency(d)
c.addDependency(d)
self.assertIn(a.getPreview(), [["d", "c", "b", "a"], ["d", "b", "c", "a"]])
def testSelfDependency(self):
a = Action(lambda: 0, "a")
with self.assertRaises(Exception) as cm:
a.addDependency(a)
self.assertEqual(cm.exception.args[0], "Dependency cycle")
