The Python Apprentice

Counting characters

So let's add a test for the other feature we want, which is to count the number of characters in the file. Since analyze_text() is now supposed to return two values, we'll have it return a tuple with line count in the first position and character count in the second. Our new test looks like this:

# text_analyzer.pyclass TextAnalysisTests(unittest.TestCase):    . . .    def test_character_count(self):        "Check that the character count is correct."        self.assertEqual(analyze_text(self.filename)[1], 131)

And it fails as expected:

% python text_analyzer.pyE..======================================================================ERROR: test_character_count (__main__.TextAnalysisTests)---------------------------------------------------------------------- ...