Tools/Scripts/webkitpy/style/checkers/png_unittest.py

# Copyright (C) 2012 Balazs Ankes (bank@inf.u-szeged.hu) University of Szeged
#
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# modification, are permitted provided that the following conditions
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"""Unit test for png.py."""

import unittest

from webkitpy.style.checkers.png import PNGChecker
from webkitpy.common.system.filesystem_mock import MockFileSystem
from webkitpy.common.system.systemhost_mock import MockSystemHost


class MockSCMDetector(object):

    def __init__(self, scm, prop=None):
        self._scm = scm
        self._prop = prop

    def display_name(self):
        return self._scm

    def propget(self, pname, path):
        return self._prop


class PNGCheckerTest(unittest.TestCase):
    """Tests PNGChecker class."""

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

        def mock_handle_style_error(self):
            pass

        checker = PNGChecker("test/config", mock_handle_style_error, MockSCMDetector('git'), MockSystemHost())
        self.assertEqual(checker._file_path, "test/config")
        self.assertEqual(checker._handle_style_error, mock_handle_style_error)

    def test_check(self):
        errors = []

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

        file_path = ''

        fs = MockFileSystem()

        scm = MockSCMDetector('svn')
        checker = PNGChecker(file_path, mock_handle_style_error, scm, MockSystemHost(filesystem=fs))
        checker.check()
        self.assertEqual(len(errors), 1)
        self.assertEqual(errors[0],
                          (0, 'image/png', 5, 'Set the svn:mime-type property (svn propset svn:mime-type image/png ).'))

        files = {'/Users/mock/.subversion/config': 'enable-auto-props = yes\n*.png = svn:mime-type=image/png'}
        fs = MockFileSystem(files)
        scm = MockSCMDetector('git')
        errors = []
        checker = PNGChecker("config", mock_handle_style_error, scm, MockSystemHost(os_name='linux', filesystem=fs))
        checker.check()
        self.assertEqual(len(errors), 0)

        files = {'/Users/mock/.subversion/config': '#enable-auto-props = yes'}
        fs = MockFileSystem(files)
        scm = MockSCMDetector('git')
        errors = []
        checker = PNGChecker("config", mock_handle_style_error, scm, MockSystemHost(os_name='linux', filesystem=fs))
        checker.check()
        self.assertEqual(len(errors), 1)

        files = {'/Users/mock/.subversion/config': 'enable-auto-props = yes\n#enable-auto-props = yes\n*.png = svn:mime-type=image/png'}
        fs = MockFileSystem(files)
        scm = MockSCMDetector('git')
        errors = []
        checker = PNGChecker("config", mock_handle_style_error, scm, MockSystemHost(os_name='linux', filesystem=fs))
        checker.check()
        self.assertEqual(len(errors), 0)

        files = {'/Users/mock/.subversion/config': '#enable-auto-props = yes\nenable-auto-props = yes\n*.png = svn:mime-type=image/png'}
        fs = MockFileSystem(files)
        scm = MockSCMDetector('git')
        errors = []
        checker = PNGChecker("config", mock_handle_style_error, scm, MockSystemHost(os_name='linux', filesystem=fs))
        checker.check()
        self.assertEqual(len(errors), 0)

        files = {'/Users/mock/.subversion/config': 'enable-auto-props = no'}
        fs = MockFileSystem(files)
        scm = MockSCMDetector('git')
        errors = []
        checker = PNGChecker("config", mock_handle_style_error, scm, MockSystemHost(os_name='linux', filesystem=fs))
        checker.check()
        self.assertEqual(len(errors), 1)

        file_path = "foo.png"
        fs.write_binary_file(file_path, "Dummy binary data")
        scm = MockSCMDetector('git')
        errors = []
        checker = PNGChecker(file_path, mock_handle_style_error, scm, MockSystemHost(os_name='linux', filesystem=fs))
        checker.check()
        self.assertEqual(len(errors), 1)

        file_path = "foo-expected.png"
        fs.write_binary_file(file_path, "Dummy binary data")
        scm = MockSCMDetector('git')
        errors = []
        checker = PNGChecker(file_path, mock_handle_style_error, scm, MockSystemHost(os_name='linux', filesystem=fs))
        checker.check()
        self.assertEqual(len(errors), 2)
        self.assertEqual(errors[0], (0, 'image/png', 5, 'Image lacks a checksum. Generate pngs using run-webkit-tests to ensure they have a checksum.'))