# Copyright (C) 2011 Google Inc. All rights reserved.
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import os
import re
import unittest


from webkitpy.common.system import filesystem_mock
from webkitpy.common.system import filesystem_unittest


class MockFileSystemTest(unittest.TestCase, filesystem_unittest.GenericFileSystemTests):
    def setUp(self):
        self.fs = filesystem_mock.MockFileSystem()
        self.setup_generic_test_dir()

    def tearDown(self):
        self.teardown_generic_test_dir()
        self.fs = None

    def quick_check(self, test_fn, good_fn, *tests):
        for test in tests:
            if hasattr(test, '__iter__'):
                expected = good_fn(*test)
                actual = test_fn(*test)
            else:
                expected = good_fn(test)
                actual = test_fn(test)
            self.assertEqual(expected, actual, 'given %s, expected %s, got %s' % (repr(test), repr(expected), repr(actual)))

    def test_join(self):
        self.quick_check(self.fs.join,
                         self.fs._slow_but_correct_join,
                         ('',),
                         ('', 'bar'),
                         ('foo',),
                         ('foo/',),
                         ('foo', ''),
                         ('foo/', ''),
                         ('foo', 'bar'),
                         ('foo', '/bar'),
                         )

    def test_normpath(self):
        self.quick_check(self.fs.normpath,
                         self.fs._slow_but_correct_normpath,
                         ('',),
                         ('/',),
                         ('.',),
                         ('/.',),
                         ('foo',),
                         ('foo/',),
                         ('foo/.',),
                         ('foo/bar',),
                         ('/foo',),
                         ('foo/../bar',),
                         ('foo/../bar/baz',),
                         ('../foo',))

    def test_dirs_under(self):
        FAKE_FILES = {
            '/tests/test1.txt': '',
            '/tests/test3/test2/test.txt': 'test',
            '/tests/test2/test.txt': 'test'}
        fs = filesystem_mock.MockFileSystem(files=FAKE_FILES)

        self.assertEqual(fs.dirs_under('/tests'), ['/tests', '/tests/test2', '/tests/test3', '/tests/test3/test2'])

        def filter_dir(fs, dirpath):
            return fs.basename(dirpath) != 'test2'

        self.assertEqual(fs.dirs_under('/tests', filter_dir), ['/tests', '/tests/test3'])