def test_should_throw_exception_when_filename_is_empty(self):
with self.assertRaises(ValueError):
f_find_words("", "lorem")
def test_should_throw_exception_when_filename_has_invalid_name(self):
with self.assertRaises(ValueError):
f_find_words("l&ore#m-ips$um.tx#t", "lorem")
def test_should_throw_exception_when_file_does_not_exists(self):
with self.assertRaises(ValueError):
f_find_words("non-existing-file", "car", "bike", "cloud")
def test_should_throw_exception_when_no_keywords_are_provided(self):
with self.assertRaises(ValueError):
f_find_words("lorem-ipsum.txt")
def test_find_word_ocurrences_in_existing_file(self):
keywords = f_find_words("lorem-ipsum.txt", "lorem", "Lorem", "et")
self.assertDictEqual(d1=keywords, d2={'lorem': 3, 'Lorem': 2, 'et': 5})