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import unittest

from webkitpy.common.system.systemhost_mock import MockSystemHost

from webkitpy.layout_tests.port import Port, Driver, DriverOutput

# FIXME: remove the dependency on TestWebKitPort
from webkitpy.layout_tests.port.webkit_unittest import TestWebKitPort


class DriverOutputTest(unittest.TestCase):
    def test_strip_metrics(self):
        patterns = [
            ('RenderView at (0,0) size 800x600', 'RenderView '),
            ('text run at (0,0) width 100: "some text"', '"some text"'),
            ('RenderBlock {HTML} at (0,0) size 800x600', 'RenderBlock {HTML} '),
            ('RenderBlock {INPUT} at (29,3) size 12x12 [color=#000000]', 'RenderBlock {INPUT}'),

            ('RenderBlock (floating) {DT} at (5,5) size 79x310 [border: (5px solid #000000)]',
            'RenderBlock (floating) {DT} [border: px solid #000000)]'),

            ('\n    "truncate text    "\n', '\n    "truncate text"\n'),

            ('RenderText {#text} at (0,3) size 41x12\n    text run at (0,3) width 41: "whimper "\n',
            'RenderText {#text} \n    "whimper"\n'),

            ("""text run at (0,0) width 109: ".one {color: green;}"
          text run at (109,0) width 0: " "
          text run at (0,17) width 81: ".1 {color: red;}"
          text run at (81,17) width 0: " "
          text run at (0,34) width 102: ".a1 {color: green;}"
          text run at (102,34) width 0: " "
          text run at (0,51) width 120: "P.two {color: purple;}"
          text run at (120,51) width 0: " "\n""",
            '".one {color: green;}  .1 {color: red;}  .a1 {color: green;}  P.two {color: purple;}"\n'),

            ('text-- other text', 'text--other text'),

            (' some output   "truncate trailing spaces at end of line after text"   \n',
            ' some output   "truncate trailing spaces at end of line after text"\n'),

            (r'scrollWidth 120', r'scrollWidth'),
            (r'scrollHeight 120', r'scrollHeight'),
        ]

        for pattern in patterns:
            driver_output = DriverOutput(pattern[0], None, None, None)
            driver_output.strip_metrics()
            self.assertEqual(driver_output.text, pattern[1])


class DriverTest(unittest.TestCase):
    def make_port(self):
        return Port(MockSystemHost())

    def _assert_wrapper(self, wrapper_string, expected_wrapper):
        wrapper = Driver(self.make_port(), None, pixel_tests=False)._command_wrapper(wrapper_string)
        self.assertEqual(wrapper, expected_wrapper)

    def test_command_wrapper(self):
        self._assert_wrapper(None, [])
        self._assert_wrapper("valgrind", ["valgrind"])

        # Validate that shlex works as expected.
        command_with_spaces = "valgrind --smc-check=\"check with spaces!\" --foo"
        expected_parse = ["valgrind", "--smc-check=check with spaces!", "--foo"]
        self._assert_wrapper(command_with_spaces, expected_parse)

    def test_test_to_uri(self):
        port = self.make_port()
        driver = Driver(port, None, pixel_tests=False)
        self.assertEqual(driver.test_to_uri('foo/bar.html'), 'file://%s/foo/bar.html' % port.layout_tests_dir())
        self.assertEqual(driver.test_to_uri('http/tests/foo.html'), 'http://127.0.0.1:8000/foo.html')
        self.assertEqual(driver.test_to_uri('http/tests/ssl/bar.html'), 'https://127.0.0.1:8443/ssl/bar.html')

    def test_uri_to_test(self):
        port = self.make_port()
        driver = Driver(port, None, pixel_tests=False)
        self.assertEqual(driver.uri_to_test('file://%s/foo/bar.html' % port.layout_tests_dir()), 'foo/bar.html')
        self.assertEqual(driver.uri_to_test('http://127.0.0.1:8000/foo.html'), 'http/tests/foo.html')
        self.assertEqual(driver.uri_to_test('https://127.0.0.1:8443/ssl/bar.html'), 'http/tests/ssl/bar.html')

    def test_read_block(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=False)
        driver._server_process = MockServerProcess(lines=[
            'ActualHash: foobar',
            'Content-Type: my_type',
            'Content-Transfer-Encoding: none',
            "#EOF",
        ])
        content_block = driver._read_block(0)
        self.assertEquals(content_block.content_type, 'my_type')
        self.assertEquals(content_block.encoding, 'none')
        self.assertEquals(content_block.content_hash, 'foobar')
        driver._server_process = None

    def test_read_binary_block(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=True)
        driver._server_process = MockServerProcess(lines=[
            'ActualHash: actual',
            'ExpectedHash: expected',
            'Content-Type: image/png',
            'Content-Length: 9',
            "12345678",
            "#EOF",
        ])
        content_block = driver._read_block(0)
        self.assertEquals(content_block.content_type, 'image/png')
        self.assertEquals(content_block.content_hash, 'actual')
        self.assertEquals(content_block.content, '12345678\n')
        self.assertEquals(content_block.decoded_content, '12345678\n')
        driver._server_process = None

    def test_read_base64_block(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=True)
        driver._server_process = MockServerProcess(lines=[
            'ActualHash: actual',
            'ExpectedHash: expected',
            'Content-Type: image/png',
            'Content-Transfer-Encoding: base64',
            'Content-Length: 12',
            'MTIzNDU2NzgK#EOF',
        ])
        content_block = driver._read_block(0)
        self.assertEquals(content_block.content_type, 'image/png')
        self.assertEquals(content_block.content_hash, 'actual')
        self.assertEquals(content_block.encoding, 'base64')
        self.assertEquals(content_block.content, 'MTIzNDU2NzgK')
        self.assertEquals(content_block.decoded_content, '12345678\n')

    def test_no_timeout(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=True, no_timeout=True)
        self.assertEquals(driver.cmd_line(True, []), ['/mock-build/DumpRenderTree', '--no-timeout', '--pixel-tests', '-'])

    def test_check_for_driver_crash(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=True)

        class FakeServerProcess(object):
            def __init__(self, crashed):
                self.crashed = crashed

            def pid(self):
                return 1234

            def name(self):
                return 'FakeServerProcess'

            def has_crashed(self):
                return self.crashed

            def stop(self):
                pass

        def assert_crash(driver, error_line, crashed, name, pid, unresponsive=False):
            self.assertEquals(driver._check_for_driver_crash(error_line), crashed)
            self.assertEquals(driver._crashed_process_name, name)
            self.assertEquals(driver._crashed_pid, pid)
            self.assertEquals(driver._subprocess_was_unresponsive, unresponsive)
            driver.stop()

        driver._server_process = FakeServerProcess(False)
        assert_crash(driver, '', False, None, None)

        driver._crashed_process_name = None
        driver._crashed_pid = None
        driver._server_process = FakeServerProcess(False)
        driver._subprocess_was_unresponsive = False
        assert_crash(driver, '#CRASHED\n', True, 'FakeServerProcess', 1234)

        driver._crashed_process_name = None
        driver._crashed_pid = None
        driver._server_process = FakeServerProcess(False)
        driver._subprocess_was_unresponsive = False
        assert_crash(driver, '#CRASHED - WebProcess\n', True, 'WebProcess', None)

        driver._crashed_process_name = None
        driver._crashed_pid = None
        driver._server_process = FakeServerProcess(False)
        driver._subprocess_was_unresponsive = False
        assert_crash(driver, '#CRASHED - WebProcess (pid 8675)\n', True, 'WebProcess', 8675)

        driver._crashed_process_name = None
        driver._crashed_pid = None
        driver._server_process = FakeServerProcess(False)
        driver._subprocess_was_unresponsive = False
        assert_crash(driver, '#PROCESS UNRESPONSIVE - WebProcess (pid 8675)\n', True, 'WebProcess', 8675, True)

        driver._crashed_process_name = None
        driver._crashed_pid = None
        driver._server_process = FakeServerProcess(True)
        driver._subprocess_was_unresponsive = False
        assert_crash(driver, '', True, 'FakeServerProcess', 1234)

    def test_creating_a_port_does_not_write_to_the_filesystem(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=True)
        self.assertEquals(port._filesystem.written_files, {})
        self.assertEquals(port._filesystem.last_tmpdir, None)

    def test_stop_cleans_up_properly(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=True)
        driver._server_process_constructor = MockServerProcess
        driver.start(True, [])
        last_tmpdir = port._filesystem.last_tmpdir
        self.assertNotEquals(last_tmpdir, None)
        driver.stop()
        self.assertFalse(port._filesystem.isdir(last_tmpdir))

    def test_two_starts_cleans_up_properly(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=True)
        driver._server_process_constructor = MockServerProcess
        driver.start(True, [])
        last_tmpdir = port._filesystem.last_tmpdir
        driver._start(True, [])
        self.assertFalse(port._filesystem.isdir(last_tmpdir))

    def test_start_actually_starts(self):
        port = TestWebKitPort()
        driver = Driver(port, 0, pixel_tests=True)
        driver._server_process_constructor = MockServerProcess
        driver.start(True, [])
        self.assertTrue(driver._server_process.started)


class MockServerProcess(object):
    def __init__(self, port_obj=None, name=None, cmd=None, env=None, universal_newlines=False, lines=None):
        self.timed_out = False
        self.lines = lines or []
        self.crashed = False
        self.started = False

    def has_crashed(self):
        return self.crashed

    def read_stdout_line(self, deadline):
        return self.lines.pop(0) + "\n"

    def read_stdout(self, deadline, size):
        first_line = self.lines[0]
        if size > len(first_line):
            self.lines.pop(0)
            remaining_size = size - len(first_line) - 1
            if not remaining_size:
                return first_line + "\n"
            return first_line + "\n" + self.read_stdout(deadline, remaining_size)
        result = self.lines[0][:size]
        self.lines[0] = self.lines[0][size:]
        return result

    def read_either_stdout_or_stderr_line(self, deadline):
        # FIXME: We should have tests which intermix stderr and stdout lines.
        return self.read_stdout_line(deadline), None

    def start(self):
        self.started = True

    def stop(self, kill_directly=False):
        return

    def kill(self):
        return


if __name__ == '__main__':
    unittest.main()
