#!/usr/bin/python
# Copyright (C) 2012 Google Inc. All rights reserved.
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import StringIO
import math
import unittest

from webkitpy.common.host_mock import MockHost
from webkitpy.common.system.outputcapture import OutputCapture
from webkitpy.layout_tests.port.driver import DriverOutput
from webkitpy.layout_tests.port.test import TestDriver
from webkitpy.layout_tests.port.test import TestPort
from webkitpy.performance_tests.perftest import ChromiumStylePerfTest
from webkitpy.performance_tests.perftest import PageLoadingPerfTest
from webkitpy.performance_tests.perftest import PerfTest
from webkitpy.performance_tests.perftest import PerfTestFactory
from webkitpy.performance_tests.perftest import ReplayPerfTest


class MockPort(TestPort):
    def __init__(self, custom_run_test=None):
        super(MockPort, self).__init__(host=MockHost(), custom_run_test=custom_run_test)

class MainTest(unittest.TestCase):
    def test_parse_output(self):
        output = DriverOutput('\n'.join([
            'Running 20 times',
            'Ignoring warm-up run (1115)',
            '',
            'Time:',
            'values 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 ms',
            'avg 1100 ms',
            'median 1101 ms',
            'stdev 11 ms',
            'min 1080 ms',
            'max 1120 ms']), image=None, image_hash=None, audio=None)
        output_capture = OutputCapture()
        output_capture.capture_output()
        try:
            test = PerfTest(MockPort(), 'some-test', '/path/some-dir/some-test')
            self.assertEqual(test.parse_output(output),
                {'some-test': {'avg': 1100.0, 'median': 1101.0, 'min': 1080.0, 'max': 1120.0, 'stdev': 11.0, 'unit': 'ms',
                    'values': [i for i in range(1, 20)]}})
        finally:
            pass
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, 'RESULT some-test= 1100.0 ms\nmedian= 1101.0 ms, stdev= 11.0 ms, min= 1080.0 ms, max= 1120.0 ms\n')

    def test_parse_output_with_failing_line(self):
        output = DriverOutput('\n'.join([
            'Running 20 times',
            'Ignoring warm-up run (1115)',
            '',
            'some-unrecognizable-line',
            '',
            'Time:'
            'values 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 ms',
            'avg 1100 ms',
            'median 1101 ms',
            'stdev 11 ms',
            'min 1080 ms',
            'max 1120 ms']), image=None, image_hash=None, audio=None)
        output_capture = OutputCapture()
        output_capture.capture_output()
        try:
            test = PerfTest(MockPort(), 'some-test', '/path/some-dir/some-test')
            self.assertEqual(test.parse_output(output), None)
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, 'some-unrecognizable-line\n')

    def test_ignored_stderr_lines(self):
        test = PerfTest(MockPort(), 'some-test', '/path/some-dir/some-test')
        ignored_lines = [
            "Unknown option: --foo-bar",
            "[WARNING:proxy_service.cc] bad moon a-rising",
            "[INFO:SkFontHost_android.cpp(1158)] Use Test Config File Main /data/local/tmp/drt/android_main_fonts.xml, Fallback /data/local/tmp/drt/android_fallback_fonts.xml, Font Dir /data/local/tmp/drt/fonts/",
        ]
        for line in ignored_lines:
            self.assertTrue(test._should_ignore_line_in_stderr(line))

        non_ignored_lines = [
            "Should not be ignored",
            "[WARNING:chrome.cc] Something went wrong",
            "[ERROR:main.cc] The sky has fallen",
        ]
        for line in non_ignored_lines:
            self.assertFalse(test._should_ignore_line_in_stderr(line))


class TestPageLoadingPerfTest(unittest.TestCase):
    class MockDriver(object):
        def __init__(self, values, test, measurements=None):
            self._values = values
            self._index = 0
            self._test = test
            self._measurements = measurements

        def run_test(self, input, stop_when_done):
            if input.test_name == self._test.force_gc_test:
                return
            value = self._values[self._index]
            self._index += 1
            if isinstance(value, str):
                return DriverOutput('some output', image=None, image_hash=None, audio=None, error=value)
            else:
                return DriverOutput('some output', image=None, image_hash=None, audio=None, test_time=self._values[self._index - 1], measurements=self._measurements)

    def test_run(self):
        port = MockPort()
        test = PageLoadingPerfTest(port, 'some-test', '/path/some-dir/some-test')
        driver = TestPageLoadingPerfTest.MockDriver(range(1, 21), test)
        output_capture = OutputCapture()
        output_capture.capture_output()
        try:
            self.assertEqual(test.run(driver, None),
                {'some-test': {'max': 20000, 'avg': 11000.0, 'median': 11000, 'stdev': 5627.314338711378, 'min': 2000, 'unit': 'ms',
                    'values': [i * 1000 for i in range(2, 21)]}})
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, 'RESULT some-test= 11000.0 ms\nmedian= 11000 ms, stdev= 5627.31433871 ms, min= 2000 ms, max= 20000 ms\n')

    def test_run_with_memory_output(self):
        port = MockPort()
        test = PageLoadingPerfTest(port, 'some-test', '/path/some-dir/some-test')
        memory_results = {'Malloc': 10, 'JSHeap': 5}
        self.maxDiff = None
        driver = TestPageLoadingPerfTest.MockDriver(range(1, 21), test, memory_results)
        output_capture = OutputCapture()
        output_capture.capture_output()
        try:
            self.assertEqual(test.run(driver, None),
                {'some-test': {'max': 20000, 'avg': 11000.0, 'median': 11000, 'stdev': 5627.314338711378, 'min': 2000, 'unit': 'ms',
                    'values': [i * 1000 for i in range(2, 21)]},
                 'some-test:Malloc': {'max': 10, 'avg': 10.0, 'median': 10, 'min': 10, 'stdev': 0.0, 'unit': 'bytes',
                    'values': [10] * 19},
                 'some-test:JSHeap': {'max': 5, 'avg': 5.0, 'median': 5, 'min': 5, 'stdev': 0.0, 'unit': 'bytes',
                    'values': [5] * 19}})
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, 'RESULT some-test= 11000.0 ms\nmedian= 11000 ms, stdev= 5627.31433871 ms, min= 2000 ms, max= 20000 ms\n'
            + 'RESULT some-test: Malloc= 10.0 bytes\nmedian= 10 bytes, stdev= 0.0 bytes, min= 10 bytes, max= 10 bytes\n'
            + 'RESULT some-test: JSHeap= 5.0 bytes\nmedian= 5 bytes, stdev= 0.0 bytes, min= 5 bytes, max= 5 bytes\n')

    def test_run_with_bad_output(self):
        output_capture = OutputCapture()
        output_capture.capture_output()
        try:
            port = MockPort()
            test = PageLoadingPerfTest(port, 'some-test', '/path/some-dir/some-test')
            driver = TestPageLoadingPerfTest.MockDriver([1, 2, 3, 4, 5, 6, 7, 'some error', 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20], test)
            self.assertEqual(test.run(driver, None), None)
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, 'error: some-test\nsome error\n')


class TestReplayPerfTest(unittest.TestCase):

    class ReplayTestPort(MockPort):
        def __init__(self, custom_run_test=None):

            class ReplayTestDriver(TestDriver):
                def run_test(self, text_input, stop_when_done):
                    return custom_run_test(text_input, stop_when_done) if custom_run_test else None

            self._custom_driver_class = ReplayTestDriver
            super(self.__class__, self).__init__()

        def _driver_class(self):
            return self._custom_driver_class

    class MockReplayServer(object):
        def __init__(self, wait_until_ready=True):
            self.wait_until_ready = lambda: wait_until_ready

        def stop(self):
            pass

    def _add_file(self, port, dirname, filename, content=True):
        port.host.filesystem.maybe_make_directory(dirname)
        port.host.filesystem.write_binary_file(port.host.filesystem.join(dirname, filename), content)

    def _setup_test(self, run_test=None):
        test_port = self.ReplayTestPort(run_test)
        self._add_file(test_port, '/path/some-dir', 'some-test.replay', 'http://some-test/')
        test = ReplayPerfTest(test_port, 'some-test.replay', '/path/some-dir/some-test.replay')
        test._start_replay_server = lambda archive, record: self.__class__.MockReplayServer()
        return test, test_port

    def test_run_single(self):
        output_capture = OutputCapture()
        output_capture.capture_output()

        loaded_pages = []

        def run_test(test_input, stop_when_done):
            if test_input.test_name == test.force_gc_test:
                loaded_pages.append(test_input)
                return
            if test_input.test_name != "about:blank":
                self.assertEqual(test_input.test_name, 'http://some-test/')
            loaded_pages.append(test_input)
            self._add_file(port, '/path/some-dir', 'some-test.wpr', 'wpr content')
            return DriverOutput('actual text', 'actual image', 'actual checksum',
                audio=None, crash=False, timeout=False, error=False)

        test, port = self._setup_test(run_test)
        test._archive_path = '/path/some-dir/some-test.wpr'
        test._url = 'http://some-test/'

        try:
            driver = port.create_driver(worker_number=1, no_timeout=True)
            self.assertTrue(test.run_single(driver, '/path/some-dir/some-test.replay', time_out_ms=100))
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()

        self.assertEqual(len(loaded_pages), 2)
        self.assertEqual(loaded_pages[0].test_name, test.force_gc_test)
        self.assertEqual(loaded_pages[1].test_name, 'http://some-test/')
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, '')
        self.assertEqual(port.host.filesystem.read_binary_file('/path/some-dir/some-test-actual.png'), 'actual image')

    def test_run_single_fails_without_webpagereplay(self):
        output_capture = OutputCapture()
        output_capture.capture_output()

        test, port = self._setup_test()
        test._start_replay_server = lambda archive, record: None
        test._archive_path = '/path/some-dir.wpr'
        test._url = 'http://some-test/'

        try:
            driver = port.create_driver(worker_number=1, no_timeout=True)
            self.assertEqual(test.run_single(driver, '/path/some-dir/some-test.replay', time_out_ms=100), None)
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, "Web page replay didn't start.\n")

    def test_prepare_fails_when_wait_until_ready_fails(self):
        output_capture = OutputCapture()
        output_capture.capture_output()

        test, port = self._setup_test()
        test._start_replay_server = lambda archive, record: self.__class__.MockReplayServer(wait_until_ready=False)
        test._archive_path = '/path/some-dir.wpr'
        test._url = 'http://some-test/'

        try:
            driver = port.create_driver(worker_number=1, no_timeout=True)
            self.assertEqual(test.run_single(driver, '/path/some-dir/some-test.replay', time_out_ms=100), None)
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()

        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, "Web page replay didn't start.\n")

    def test_run_single_fails_when_output_has_error(self):
        output_capture = OutputCapture()
        output_capture.capture_output()

        loaded_pages = []

        def run_test(test_input, stop_when_done):
            loaded_pages.append(test_input)
            self._add_file(port, '/path/some-dir', 'some-test.wpr', 'wpr content')
            return DriverOutput('actual text', 'actual image', 'actual checksum',
                audio=None, crash=False, timeout=False, error='some error')

        test, port = self._setup_test(run_test)
        test._archive_path = '/path/some-dir.wpr'
        test._url = 'http://some-test/'

        try:
            driver = port.create_driver(worker_number=1, no_timeout=True)
            self.assertEqual(test.run_single(driver, '/path/some-dir/some-test.replay', time_out_ms=100), None)
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()

        self.assertEqual(len(loaded_pages), 2)
        self.assertEqual(loaded_pages[0].test_name, test.force_gc_test)
        self.assertEqual(loaded_pages[1].test_name, 'http://some-test/')
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, 'error: some-test.replay\nsome error\n')

    def test_prepare(self):
        output_capture = OutputCapture()
        output_capture.capture_output()

        def run_test(test_input, stop_when_done):
            self._add_file(port, '/path/some-dir', 'some-test.wpr', 'wpr content')
            return DriverOutput('actual text', 'actual image', 'actual checksum',
                audio=None, crash=False, timeout=False, error=False)

        test, port = self._setup_test(run_test)

        try:
            self.assertEqual(test.prepare(time_out_ms=100), True)
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()

        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, 'Preparing replay for some-test.replay\nPrepared replay for some-test.replay\n')
        self.assertEqual(port.host.filesystem.read_binary_file('/path/some-dir/some-test-expected.png'), 'actual image')

    def test_prepare_calls_run_single(self):
        output_capture = OutputCapture()
        output_capture.capture_output()
        called = [False]

        def run_single(driver, url, time_out_ms, record):
            self.assertTrue(record)
            self.assertEqual(url, '/path/some-dir/some-test.wpr')
            called[0] = True
            return False

        test, port = self._setup_test()
        test.run_single = run_single

        try:
            self.assertEqual(test.prepare(time_out_ms=100), False)
        finally:
            actual_stdout, actual_stderr, actual_logs = output_capture.restore_output()
        self.assertTrue(called[0])
        self.assertEqual(test._archive_path, '/path/some-dir/some-test.wpr')
        self.assertEqual(test._url, 'http://some-test/')
        self.assertEqual(actual_stdout, '')
        self.assertEqual(actual_stderr, '')
        self.assertEqual(actual_logs, "Preparing replay for some-test.replay\nFailed to prepare a replay for some-test.replay\n")

class TestPerfTestFactory(unittest.TestCase):
    def test_regular_test(self):
        test = PerfTestFactory.create_perf_test(MockPort(), 'some-dir/some-test', '/path/some-dir/some-test')
        self.assertEqual(test.__class__, PerfTest)

    def test_inspector_test(self):
        test = PerfTestFactory.create_perf_test(MockPort(), 'inspector/some-test', '/path/inspector/some-test')
        self.assertEqual(test.__class__, ChromiumStylePerfTest)


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