def test_find_diff_in_sentence_reverse_behaviour(self):
"""
Tests that find_diff_in_sentence function
can change same sentences without changing answer
"""
first_sentence = ('its', 'body', 'is', 'covered', 'with', 'bushy')
second_sentence = ('its', 'body', 'is', 'covered', 'with', 'shiny')
lcs = ('its', 'body', 'is', 'covered', 'with')
expected = ((5, 6), (5, 6))
actual = find_diff_in_sentence(first_sentence, second_sentence, lcs)
actual_reversed = find_diff_in_sentence(second_sentence,
first_sentence, lcs)
self.assertEqual(expected, actual)
self.assertEqual(expected, actual_reversed)
def test_find_diff_in_sentence_incorrect_inputs(self):
"""
Tests that find_diff_in_sentence function
can handle incorrect inputs
"""
patches_sentence = ('the', 'cat', 'left')
bad_inputs = [[], {}, '', 9.22, -1, 0, -6, None, True, (None, )]
expected = ()
for bad_input in bad_inputs:
actual_first_sentence = find_diff_in_sentence(
bad_input, patches_sentence, patches_sentence)
actual_second_sentence = find_diff_in_sentence(
patches_sentence, bad_input, patches_sentence)
actual_lcs_sentence = find_diff_in_sentence(
patches_sentence, patches_sentence, bad_input)
self.assertEqual(expected, actual_first_sentence)
self.assertEqual(expected, actual_second_sentence)
self.assertEqual(expected, actual_lcs_sentence)
def test_find_diff_in_sentence_diff(self):
"""
Tests that find_diff_in_sentence function
can handle sentences with max diff
"""
first_sentence = ('the', 'cat', 'left')
second_sentence = ('a', 'dog', 'appeared')
lcs = ()
expected = ((0, 3), (0, 3))
actual = find_diff_in_sentence(first_sentence, second_sentence, lcs)
self.assertEqual(expected, actual)
def test_find_diff_in_sentence_no_diff(self):
"""
Tests that find_diff_in_sentence function
can handle maximum same sentences
"""
first_sentence = ('his', 'body', 'is', 'covered', 'with', 'bushy',
'white')
expected = ((), ())
actual = find_diff_in_sentence(first_sentence, first_sentence,
first_sentence)
self.assertEqual(expected, actual)
def test_find_diff_in_sentence_empty_sentence(self):
"""
Tests that find_diff_in_sentence function
can handle empty sentence inputs
"""
first_sentence = ()
second_sentence = ('a', 'dog', 'appeared')
lcs = ()
expected = ((), ())
actual = find_diff_in_sentence(first_sentence, second_sentence, lcs)
self.assertEqual(expected, actual)
def test_find_diff_in_sentence_check_output(self):
"""
Tests that find_diff_in_sentence function
can generate correct output according to given specs
"""
sentence_first = ('the', 'cat', 'disappeared')
sentence_second = ('the', 'dog', 'disappeared')
lcs = ('the', 'disappeared')
expected = tuple
actual = type(
find_diff_in_sentence(sentence_first, sentence_second, lcs))
self.assertEqual(expected, actual)
def test_find_diff_in_sentence_start_sentence_diff(self):
"""
Tests that find_diff_in_sentence function
can handle correct diff in the start of sentence
"""
first_sentence = ('his', 'body', 'is', 'covered', 'with', 'bushy',
'white')
second_sentence = ('her', 'body', 'is', 'covered', 'with', 'bushy',
'white')
lcs = ('body', 'is', 'covered', 'with', 'bushy', 'white')
expected = ((0, 1), (0, 1))
actual = find_diff_in_sentence(first_sentence, second_sentence, lcs)
self.assertEqual(expected, actual)
def test_find_diff_in_sentence_end_sentence_diff(self):
"""
Tests that find_diff_in_sentence function
can handle correct diff in the end of sentences
"""
first_sentence = ('its', 'body', 'is', 'covered', 'with', 'bushy',
'white')
second_sentence = ('its', 'body', 'is', 'covered', 'with', 'shiny',
'black')
lcs = ('its', 'body', 'is', 'covered', 'with')
expected = ((5, 7), (5, 7))
actual = find_diff_in_sentence(first_sentence, second_sentence, lcs)
self.assertEqual(expected, actual)
def test_find_diff_in_sentence_many(self):
"""
Tests that find_diff_in_sentence function
can handle several diffs
"""
first_sentence = ('his', 'body', 'is', 'covered', 'with', 'bushy',
'white')
second_sentence = ('her', 'body', 'is', 'covered', 'with', 'shiny',
'black')
lcs = ('body', 'is', 'covered', 'with')
expected = ((0, 1, 5, 7), (0, 1, 5, 7))
actual = find_diff_in_sentence(first_sentence, second_sentence, lcs)
self.assertEqual(expected, actual)
def test_find_diff_in_sentence_ideal(self):
"""
Tests that find_diff_in_sentence function
can handle ideal simple input
"""
first_sentence = ('its', 'body', 'is', 'covered', 'with', 'bushy',
'white', 'fur')
second_sentence = ('its', 'body', 'is', 'covered', 'with', 'shiny',
'black', 'fur')
lcs = ('its', 'body', 'is', 'covered', 'with', 'fur')
expected = ((5, 7), (5, 7))
actual = find_diff_in_sentence(first_sentence, second_sentence, lcs)
self.assertEqual(expected, actual)