def test_flip_pathsuccess(self):
"""
Should return True if condP1 and condP2
and successfully flip word.
"""
bw_0 = BraidWord([1, 2, 1])
bw_1 = BraidWord([1, 1, 2]) # Check wrapping around
bw_2 = BraidWord([-1, -2, -1])
self.assertTrue(bw_0.flip(0))
self.assertTrue(bw_1.flip(1))
self.assertTrue(bw_2.flip(0))
# Word modifications
self.assertEqual(bw_0.word, [2, 1, 2])
self.assertEqual(bw_1.word, [2, 2, 1])
self.assertEqual(bw_2.word, [-2, -1, -2])
# genCount modifications
self.assertEqual(bw_0.genCount, [1, 2])
self.assertEqual(bw_1.genCount, [1, 2])
self.assertEqual(bw_2.genCount, [1, 2])
def test_flip_pathfail_1(self):
"""Should return False if
~condP2:
abs(l[index] - l[(index+1) % len(l)]) != 1
and should not modify word.
"""
bw = BraidWord([1, 3, 1])
# NOTE condP1 holds (refer to test_flip_pathfail_0)
self.assertFalse(bw.flip(0))
# (No) Word modification
self.assertEqual(bw.word, [1, 3, 1])
# (No) genCount modification
self.assertEqual(bw.genCount, [2, 0, 1])
def test_flip_pathfail_0(self):
"""Should return False if
~condP1:
( l[index] != l[(index+2) % len(l)] )
and should not modify word.
"""
bw = BraidWord([1, 2, 3])
# NOTE condP2 holds (refer to test_flip_pathfail_1)
self.assertFalse(bw.flip(0))
# (No) Word modification
self.assertEqual(bw.word, [1, 2, 3])
# (No) genCount modification
self.assertEqual(bw.genCount, [1, 1, 1])
