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"""Unit test for xcodeproj.py."""

import unittest
from webkitpy.style.checkers import xcodeproj


class TestErrorHandler(object):
    """Error handler for XcodeProjectFileChecker unittests"""
    def __init__(self, handler):
        self.handler = handler

    def turn_off_line_filtering(self):
        pass

    def __call__(self, line_number, category, confidence, message):
        self.handler(self, line_number, category, confidence, message)
        return True


class XcodeProjectFileCheckerTest(unittest.TestCase):
    """Tests XcodeProjectFileChecker class."""

    def assert_no_error(self, lines):
        def handler(error_handler, line_number, category, confidence, message):
            self.fail('Unexpected error: %d %s %d %s' % (line_number, category, confidence, message))

        error_handler = TestErrorHandler(handler)
        checker = xcodeproj.XcodeProjectFileChecker('', error_handler)
        checker.check(lines)

    def assert_error(self, lines, expected_message):
        self.had_error = False

        def handler(error_handler, line_number, category, confidence, message):
            self.assertEqual(expected_message, message)
            self.had_error = True
        error_handler = TestErrorHandler(handler)
        checker = xcodeproj.XcodeProjectFileChecker('', error_handler)
        checker.check(lines)
        self.assertTrue(self.had_error, '%s should have error: %s.' % (lines, expected_message))

    def test_detect_development_region(self):
        self.assert_no_error(['developmentRegion = en;'])
        self.assert_error([''], 'Missing "developmentRegion = en".')
        self.assert_error(['developmentRegion = Japanese;'],
                          'developmentRegion is not en.')
