# Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
#
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# modification, are permitted provided that the following conditions
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# 1.  Redistributions of source code must retain the above copyright
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"""Unit tests for python.py."""

import os
import sys
import unittest

from webkitpy.style.checkers.python import PythonChecker


class PythonCheckerTest(unittest.TestCase):

    """Tests the PythonChecker class."""

    def test_init(self):
        """Test __init__() method."""
        def _mock_handle_style_error(self):
            pass

        checker = PythonChecker("foo.txt", _mock_handle_style_error)
        self.assertEqual(checker._file_path, "foo.txt")
        self.assertEqual(checker._handle_style_error,
                          _mock_handle_style_error)

    def test_check(self):
        """Test check() method."""
        errors = []

        def _mock_handle_style_error(line_number, category, confidence, message):
            error = (line_number, category, confidence, message)
            errors.append(error)

        current_dir = os.path.dirname(__file__)
        file_path = os.path.join(current_dir, "python_unittest_input.py")

        checker = PythonChecker(file_path, _mock_handle_style_error)
        checker.check(lines=[])

        # FIXME: https://bugs.webkit.org/show_bug.cgi?id=204133
        expected_errors = [(4, "pep8/W291", 5, "trailing whitespace")]
        if sys.version_info < (3, 0):
            expected_errors.append((4, "pylint/E0602", 5, "Undefined variable 'error'"))

        self.assertEqual(errors, expected_errors)

    def test_pylint_false_positives(self):
        """Test that pylint false positives are suppressed."""
        errors = []

        def _mock_handle_style_error(line_number, category, confidence,
                                     message):
            error = (line_number, category, confidence, message)
            errors.append(error)

        current_dir = os.path.dirname(__file__)
        file_path = os.path.join(current_dir, "python_unittest_falsepositives.py")

        checker = PythonChecker(file_path, _mock_handle_style_error)
        checker.check(lines=[])

        self.assertEqual(errors, [])