Class PythonTests

Test/astc_test_python.py:36–112

Some basic Python static analysis and style checks.

class PythonTests(unittest.TestCase):
    '''
    Some basic Python static analysis and style checks.
    '''

    def test_pylint(self):
        '''
        Run pylint over the codebase.
        '''
        # Run Pylint
        stream = io.StringIO()
        reporter = TextReporter(stream)
        pylint.lint.Run(['./Test'], reporter, False)
        output = stream.getvalue()

        # Write the Pylint log
        with open('pylint.log', 'w', encoding='utf-8') as handle:
            handle.write(output)

        # Analyze the results
        pattern = re.compile(r'Your code has been rated at (.*?)/10')
        match = pattern.search(output)
        self.assertIsNotNone(match)
        score = float(match.group(1))

        # This target is currently low but we will increase over time
        self.assertGreaterEqual(score, 9.95, 'Found Pylint score regression')

    def test_pycodestyle(self):
        '''
        Run pycodestyle over the codebase.
        '''
        style = pycodestyle.StyleGuide()

        # Write the Pycodestyle log
        with open('pycodestyle.log', 'w', encoding='utf-8') as handle:
            # Redirect stdout to file so we can capture output
            old_stdout = sys.stdout
            sys.stdout = handle

            result = style.check_files(['./Test'])

            # Restore stdout
            sys.stdout = old_stdout

        self.assertEqual(result.total_errors, 0,
                         'Found pycodestyle warnings or errors.')

    def test_mypy(self):
        '''
        Run mypy over the codebase.
        '''
        # pylint: disable=c-extension-no-member
        result = mypy.api.run(['./Test'])

        # Write the mypy log
        if result[0]:
            with open('mypy.log', 'w', encoding='utf-8') as handle: