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import unittest

from webkitpy.common.system import filesystem_mock
from webkitpy.layout_tests.port import base
from webkitpy.tool.commands import rebaselineserver


class GetBaselinesTest(unittest.TestCase):
    def test_no_baselines(self):
        self._assertBaselines(
            test_files=(),
            test='fast/missing.html',
            expected_baselines={})

    def test_text_baselines(self):
        self._assertBaselines(
            test_files=(
                'fast/text-expected.txt',
                'platform/mac/fast/text-expected.txt',
            ),
            test='fast/text.html',
            expected_baselines={'mac': ('.txt',), 'base': ('.txt',)})

    def test_image_and_text_baselines(self):
        self._assertBaselines(
            test_files=(
                'fast/image-expected.txt',
                'platform/mac/fast/image-expected.png',
                'platform/mac/fast/image-expected.checksum',
                'platform/win/fast/image-expected.png',
                'platform/win/fast/image-expected.checksum',
            ),
            test='fast/image.html',
            expected_baselines={
                'base': ('.txt',),
                'mac': ('.checksum', '.png'),
                'win': ('.checksum', '.png'),
            })

    def test_extra_baselines(self):
        self._assertBaselines(
            test_files=(
                'fast/text-expected.txt',
                'platform/nosuchplatform/fast/text-expected.txt',
            ),
            test='fast/text.html',
            expected_baselines={'base': ('.txt',)})

    def _assertBaselines(self, test_files, test, expected_baselines):
        layout_tests_directory = base.Port().layout_tests_dir()
        mock_filesystem = filesystem_mock.MockFileSystem()
        for file in test_files + (test,):
            file_path = mock_filesystem.join(layout_tests_directory, file)
            mock_filesystem.files[file_path] = ''
        actual_baselines = rebaselineserver._get_test_baselines(
            test,
            layout_tests_directory,
            ('mac', 'win', 'linux'),
            mock_filesystem)
        self.assertEqual(actual_baselines, expected_baselines)