# Copyright (C) 2012 Google Inc. All rights reserved.
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"""Integration tests for run_perf_tests."""

import StringIO
import json
import re
import unittest2 as 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 TestPort
from webkitpy.performance_tests.perftest import ChromiumStylePerfTest
from webkitpy.performance_tests.perftest import PerfTest
from webkitpy.performance_tests.perftestsrunner import PerfTestsRunner


class InspectorPassTestData:
    text = 'RESULT group_name: test_name= 42 ms'
    output = """Running inspector/pass.html (2 of 2)
RESULT group_name: test_name= 42 ms
Finished: 0.1 s

"""


class EventTargetWrapperTestData:
    text = """Running 20 times
Ignoring warm-up run (1502)
1504
1505
1510
1504
1507
1509
1510
1487
1488
1472
1472
1488
1473
1472
1475
1487
1486
1486
1475
1471

Time:
values 1486, 1471, 1510, 1505, 1478, 1490 ms
avg 1490 ms
median 1488 ms
stdev 15.13935 ms
min 1471 ms
max 1510 ms
"""

    output = """Running Bindings/event-target-wrapper.html (1 of 2)
RESULT Bindings: event-target-wrapper= 1490.0 ms
median= 1488.0 ms, stdev= 15.13935 ms, min= 1471.0 ms, max= 1510.0 ms
Finished: 0.1 s

"""

    results = {"max": 1510, "avg": 1490, "median": 1488, "min": 1471, "stdev": 15.13935, "unit": "ms",
       "values": [1486, 1471, 1510, 1505, 1478, 1490]}


class SomeParserTestData:
    text = """Running 20 times
Ignoring warm-up run (1115)

Time:
values 1080, 1120, 1095, 1101, 1104 ms
avg 1100 ms
median 1101 ms
stdev 14.50861 ms
min 1080 ms
max 1120 ms
"""

    output = """Running Parser/some-parser.html (2 of 2)
RESULT Parser: some-parser= 1100.0 ms
median= 1101.0 ms, stdev= 14.50861 ms, min= 1080.0 ms, max= 1120.0 ms
Finished: 0.1 s

"""


class MemoryTestData:
    text = """Running 20 times
Ignoring warm-up run (1115)

Time:
values 1080, 1120, 1095, 1101, 1104 ms
avg 1100 ms
median 1101 ms
stdev 14.50861 ms
min 1080 ms
max 1120 ms

JS Heap:
values 825000, 811000, 848000, 837000, 829000 bytes
avg 830000 bytes
median 829000 bytes
stdev 13784.04875 bytes
min 811000 bytes
max 848000 bytes

Malloc:
values 529000, 511000, 548000, 536000, 521000 bytes
avg 529000 bytes
median 529000 bytes
stdev 14124.44689 bytes
min 511000 bytes
max 548000 bytes
"""

    output = """Running 1 tests
Running Parser/memory-test.html (1 of 1)
RESULT Parser: memory-test= 1100.0 ms
median= 1101.0 ms, stdev= 14.50861 ms, min= 1080.0 ms, max= 1120.0 ms
RESULT Parser: memory-test: JSHeap= 830000.0 bytes
median= 829000.0 bytes, stdev= 13784.04875 bytes, min= 811000.0 bytes, max= 848000.0 bytes
RESULT Parser: memory-test: Malloc= 529000.0 bytes
median= 529000.0 bytes, stdev= 14124.44689 bytes, min= 511000.0 bytes, max= 548000.0 bytes
Finished: 0.1 s
"""

    results = {'values': [1080, 1120, 1095, 1101, 1104], 'avg': 1100, 'min': 1080, 'max': 1120,
        'stdev': 14.50861, 'median': 1101, 'unit': 'ms'}
    js_heap_results = {'values': [825000, 811000, 848000, 837000, 829000], 'avg': 830000, 'min': 811000, 'max': 848000,
        'stdev': 13784.04875, 'median': 829000, 'unit': 'bytes'}
    malloc_results = {'values': [529000, 511000, 548000, 536000, 521000], 'avg': 529000, 'min': 511000, 'max': 548000,
        'stdev': 14124.44689, 'median': 529000, 'unit': 'bytes'}


class TestDriver:
    def run_test(self, driver_input, stop_when_done):
        text = ''
        timeout = False
        crash = False
        if driver_input.test_name.endswith('pass.html'):
            text = InspectorPassTestData.text
        elif driver_input.test_name.endswith('timeout.html'):
            timeout = True
        elif driver_input.test_name.endswith('failed.html'):
            text = None
        elif driver_input.test_name.endswith('tonguey.html'):
            text = 'we are not expecting an output from perf tests but RESULT blablabla'
        elif driver_input.test_name.endswith('crash.html'):
            crash = True
        elif driver_input.test_name.endswith('event-target-wrapper.html'):
            text = EventTargetWrapperTestData.text
        elif driver_input.test_name.endswith('some-parser.html'):
            text = SomeParserTestData.text
        elif driver_input.test_name.endswith('memory-test.html'):
            text = MemoryTestData.text
        return DriverOutput(text, '', '', '', crash=crash, timeout=timeout)

    def start(self):
        """do nothing"""

    def stop(self):
        """do nothing"""


class MainTest(unittest.TestCase):
    def _normalize_output(self, log):
        return re.sub(r'(stdev=\s+\d+\.\d{5})\d+', r'\1', re.sub(r'Finished: [0-9\.]+ s', 'Finished: 0.1 s', log))

    def _load_output_json(self, runner):
        json_content = runner._host.filesystem.read_text_file(runner._output_json_path())
        return json.loads(re.sub(r'("stdev":\s*\d+\.\d{5})\d+', r'\1', json_content))

    def create_runner(self, args=[], driver_class=TestDriver):
        options, parsed_args = PerfTestsRunner._parse_args(args)
        test_port = TestPort(host=MockHost(), options=options)
        test_port.create_driver = lambda worker_number=None, no_timeout=False: driver_class()

        runner = PerfTestsRunner(args=args, port=test_port)
        runner._host.filesystem.maybe_make_directory(runner._base_path, 'inspector')
        runner._host.filesystem.maybe_make_directory(runner._base_path, 'Bindings')
        runner._host.filesystem.maybe_make_directory(runner._base_path, 'Parser')

        return runner, test_port

    def run_test(self, test_name):
        runner, port = self.create_runner()
        return runner._run_single_test(ChromiumStylePerfTest(port, test_name, runner._host.filesystem.join('some-dir', test_name)))

    def test_run_passing_test(self):
        self.assertTrue(self.run_test('pass.html'))

    def test_run_silent_test(self):
        self.assertFalse(self.run_test('silent.html'))

    def test_run_failed_test(self):
        self.assertFalse(self.run_test('failed.html'))

    def test_run_tonguey_test(self):
        self.assertFalse(self.run_test('tonguey.html'))

    def test_run_timeout_test(self):
        self.assertFalse(self.run_test('timeout.html'))

    def test_run_crash_test(self):
        self.assertFalse(self.run_test('crash.html'))

    def _tests_for_runner(self, runner, test_names):
        filesystem = runner._host.filesystem
        tests = []
        for test in test_names:
            path = filesystem.join(runner._base_path, test)
            dirname = filesystem.dirname(path)
            if test.startswith('inspector/'):
                tests.append(ChromiumStylePerfTest(runner._port, test, path))
            else:
                tests.append(PerfTest(runner._port, test, path))
        return tests

    def test_run_test_set(self):
        runner, port = self.create_runner()
        tests = self._tests_for_runner(runner, ['inspector/pass.html', 'inspector/silent.html', 'inspector/failed.html',
            'inspector/tonguey.html', 'inspector/timeout.html', 'inspector/crash.html'])
        output = OutputCapture()
        output.capture_output()
        try:
            unexpected_result_count = runner._run_tests_set(tests, port)
        finally:
            stdout, stderr, log = output.restore_output()
        self.assertEqual(unexpected_result_count, len(tests) - 1)
        self.assertTrue('\nRESULT group_name: test_name= 42 ms\n' in log)

    def test_run_test_set_kills_drt_per_run(self):

        class TestDriverWithStopCount(TestDriver):
            stop_count = 0
            def stop(self):
                TestDriverWithStopCount.stop_count += 1

        runner, port = self.create_runner(driver_class=TestDriverWithStopCount)

        tests = self._tests_for_runner(runner, ['inspector/pass.html', 'inspector/silent.html', 'inspector/failed.html',
            'inspector/tonguey.html', 'inspector/timeout.html', 'inspector/crash.html'])
        unexpected_result_count = runner._run_tests_set(tests, port)

        self.assertEqual(TestDriverWithStopCount.stop_count, 6)

    def test_run_test_set_for_parser_tests(self):
        runner, port = self.create_runner()
        tests = self._tests_for_runner(runner, ['Bindings/event-target-wrapper.html', 'Parser/some-parser.html'])
        output = OutputCapture()
        output.capture_output()
        try:
            unexpected_result_count = runner._run_tests_set(tests, port)
        finally:
            stdout, stderr, log = output.restore_output()
        self.assertEqual(unexpected_result_count, 0)
        self.assertEqual(self._normalize_output(log), EventTargetWrapperTestData.output + SomeParserTestData.output)

    def test_run_memory_test(self):
        runner, port = self.create_runner_and_setup_results_template()
        runner._timestamp = 123456789
        port.host.filesystem.write_text_file(runner._base_path + '/Parser/memory-test.html', 'some content')

        output = OutputCapture()
        output.capture_output()
        try:
            unexpected_result_count = runner.run()
        finally:
            stdout, stderr, log = output.restore_output()
        self.assertEqual(unexpected_result_count, 0)
        self.assertEqual(self._normalize_output(log), MemoryTestData.output + '\nMOCK: user.open_url: file://...\n')
        results = self._load_output_json(runner)[0]['results']
        values = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]

        # Stdev for test doesn't match on some bots
        self.assertEqual(sorted(results['Parser/memory-test'].keys()), sorted(MemoryTestData.results.keys()))
        for key in MemoryTestData.results:
            if key == 'stdev':
                self.assertAlmostEqual(results['Parser/memory-test'][key], MemoryTestData.results[key], places=4)
            else:
                self.assertEqual(results['Parser/memory-test'][key], MemoryTestData.results[key])
        self.assertEqual(results['Parser/memory-test'], MemoryTestData.results)
        self.assertEqual(results['Parser/memory-test:JSHeap'], MemoryTestData.js_heap_results)
        self.assertEqual(results['Parser/memory-test:Malloc'], MemoryTestData.malloc_results)

    def _test_run_with_json_output(self, runner, filesystem, upload_suceeds=False, results_shown=True, expected_exit_code=0):
        filesystem.write_text_file(runner._base_path + '/inspector/pass.html', 'some content')
        filesystem.write_text_file(runner._base_path + '/Bindings/event-target-wrapper.html', 'some content')

        uploaded = [False]

        def mock_upload_json(hostname, json_path):
            self.assertEqual(hostname, 'some.host')
            self.assertEqual(json_path, '/mock-checkout/output.json')
            uploaded[0] = upload_suceeds
            return upload_suceeds

        runner._upload_json = mock_upload_json
        runner._timestamp = 123456789
        output_capture = OutputCapture()
        output_capture.capture_output()
        try:
            self.assertEqual(runner.run(), expected_exit_code)
        finally:
            stdout, stderr, logs = output_capture.restore_output()

        if not expected_exit_code:
            expected_logs = 'Running 2 tests\n' + EventTargetWrapperTestData.output + InspectorPassTestData.output
            if results_shown:
                expected_logs += 'MOCK: user.open_url: file://...\n'
            self.assertEqual(self._normalize_output(logs), expected_logs)

        self.assertEqual(uploaded[0], upload_suceeds)

        return logs

    _event_target_wrapper_and_inspector_results = {
        "Bindings/event-target-wrapper": EventTargetWrapperTestData.results,
        "inspector/pass.html:group_name:test_name": 42}

    def test_run_with_json_output(self):
        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json',
            '--test-results-server=some.host'])
        self._test_run_with_json_output(runner, port.host.filesystem, upload_suceeds=True)
        self.assertEqual(self._load_output_json(runner), [{
            "timestamp": 123456789, "results": self._event_target_wrapper_and_inspector_results,
            "webkit-revision": "5678", "branch": "webkit-trunk"}])

        filesystem = port.host.filesystem
        self.assertTrue(filesystem.isfile(runner._output_json_path()))
        self.assertTrue(filesystem.isfile(filesystem.splitext(runner._output_json_path())[0] + '.html'))

    def test_run_with_description(self):
        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json',
            '--test-results-server=some.host', '--description', 'some description'])
        self._test_run_with_json_output(runner, port.host.filesystem, upload_suceeds=True)
        self.assertEqual(self._load_output_json(runner), [{
            "timestamp": 123456789, "description": "some description",
            "results": self._event_target_wrapper_and_inspector_results,
            "webkit-revision": "5678", "branch": "webkit-trunk"}])

    def create_runner_and_setup_results_template(self, args=[]):
        runner, port = self.create_runner(args)
        filesystem = port.host.filesystem
        filesystem.write_text_file(runner._base_path + '/resources/results-template.html',
            'BEGIN<script src="%AbsolutePathToWebKitTrunk%/some.js"></script>'
            '<script src="%AbsolutePathToWebKitTrunk%/other.js"></script><script>%PeformanceTestsResultsJSON%</script>END')
        filesystem.write_text_file(runner._base_path + '/Dromaeo/resources/dromaeo/web/lib/jquery-1.6.4.js', 'jquery content')
        return runner, port

    def test_run_respects_no_results(self):
        runner, port = self.create_runner(args=['--output-json-path=/mock-checkout/output.json',
            '--test-results-server=some.host', '--no-results'])
        self._test_run_with_json_output(runner, port.host.filesystem, upload_suceeds=False, results_shown=False)
        self.assertFalse(port.host.filesystem.isfile('/mock-checkout/output.json'))

    def test_run_generates_json_by_default(self):
        runner, port = self.create_runner_and_setup_results_template()
        filesystem = port.host.filesystem
        output_json_path = runner._output_json_path()
        results_page_path = filesystem.splitext(output_json_path)[0] + '.html'

        self.assertFalse(filesystem.isfile(output_json_path))
        self.assertFalse(filesystem.isfile(results_page_path))

        self._test_run_with_json_output(runner, port.host.filesystem)

        self.assertEqual(self._load_output_json(runner), [{
            "timestamp": 123456789, "results": self._event_target_wrapper_and_inspector_results,
            "webkit-revision": "5678", "branch": "webkit-trunk"}])

        self.assertTrue(filesystem.isfile(output_json_path))
        self.assertTrue(filesystem.isfile(results_page_path))

    def test_run_merges_output_by_default(self):
        runner, port = self.create_runner_and_setup_results_template()
        filesystem = port.host.filesystem
        output_json_path = runner._output_json_path()

        filesystem.write_text_file(output_json_path, '[{"previous": "results"}]')

        self._test_run_with_json_output(runner, port.host.filesystem)

        self.assertEqual(self._load_output_json(runner), [{"previous": "results"}, {
            "timestamp": 123456789, "results": self._event_target_wrapper_and_inspector_results,
            "webkit-revision": "5678", "branch": "webkit-trunk"}])
        self.assertTrue(filesystem.isfile(filesystem.splitext(output_json_path)[0] + '.html'))

    def test_run_respects_reset_results(self):
        runner, port = self.create_runner_and_setup_results_template(args=["--reset-results"])
        filesystem = port.host.filesystem
        output_json_path = runner._output_json_path()

        filesystem.write_text_file(output_json_path, '[{"previous": "results"}]')

        self._test_run_with_json_output(runner, port.host.filesystem)

        self.assertEqual(self._load_output_json(runner), [{
            "timestamp": 123456789, "results": self._event_target_wrapper_and_inspector_results,
            "webkit-revision": "5678", "branch": "webkit-trunk"}])
        self.assertTrue(filesystem.isfile(filesystem.splitext(output_json_path)[0] + '.html'))
        pass

    def test_run_generates_and_show_results_page(self):
        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json'])
        page_shown = []
        port.show_results_html_file = lambda path: page_shown.append(path)
        filesystem = port.host.filesystem
        self._test_run_with_json_output(runner, filesystem, results_shown=False)

        expected_entry = {"timestamp": 123456789, "results": self._event_target_wrapper_and_inspector_results,
            "webkit-revision": "5678", "branch": "webkit-trunk"}

        self.maxDiff = None
        self.assertEqual(runner._output_json_path(), '/mock-checkout/output.json')
        self.assertEqual(self._load_output_json(runner), [expected_entry])
        self.assertEqual(filesystem.read_text_file('/mock-checkout/output.html'),
            'BEGIN<script src="/test.checkout/some.js"></script><script src="/test.checkout/other.js"></script>'
            '<script>%s</script>END' % port.host.filesystem.read_text_file(runner._output_json_path()))
        self.assertEqual(page_shown[0], '/mock-checkout/output.html')

        self._test_run_with_json_output(runner, filesystem, results_shown=False)
        self.assertEqual(runner._output_json_path(), '/mock-checkout/output.json')
        self.assertEqual(self._load_output_json(runner), [expected_entry, expected_entry])
        self.assertEqual(filesystem.read_text_file('/mock-checkout/output.html'),
            'BEGIN<script src="/test.checkout/some.js"></script><script src="/test.checkout/other.js"></script>'
            '<script>%s</script>END' % port.host.filesystem.read_text_file(runner._output_json_path()))

    def test_run_respects_no_show_results(self):
        show_results_html_file = lambda path: page_shown.append(path)

        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json'])
        page_shown = []
        port.show_results_html_file = show_results_html_file
        self._test_run_with_json_output(runner, port.host.filesystem, results_shown=False)
        self.assertEqual(page_shown[0], '/mock-checkout/output.html')

        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json',
            '--no-show-results'])
        page_shown = []
        port.show_results_html_file = show_results_html_file
        self._test_run_with_json_output(runner, port.host.filesystem, results_shown=False)
        self.assertEqual(page_shown, [])

    def test_run_with_bad_output_json(self):
        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json'])
        port.host.filesystem.write_text_file('/mock-checkout/output.json', 'bad json')
        self._test_run_with_json_output(runner, port.host.filesystem, expected_exit_code=PerfTestsRunner.EXIT_CODE_BAD_MERGE)
        port.host.filesystem.write_text_file('/mock-checkout/output.json', '{"another bad json": "1"}')
        self._test_run_with_json_output(runner, port.host.filesystem, expected_exit_code=PerfTestsRunner.EXIT_CODE_BAD_MERGE)

    def test_run_with_slave_config_json(self):
        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json',
            '--slave-config-json-path=/mock-checkout/slave-config.json', '--test-results-server=some.host'])
        port.host.filesystem.write_text_file('/mock-checkout/slave-config.json', '{"key": "value"}')
        self._test_run_with_json_output(runner, port.host.filesystem, upload_suceeds=True)
        self.assertEqual(self._load_output_json(runner), [{
            "timestamp": 123456789, "results": self._event_target_wrapper_and_inspector_results,
            "webkit-revision": "5678", "branch": "webkit-trunk", "key": "value"}])

    def test_run_with_bad_slave_config_json(self):
        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json',
            '--slave-config-json-path=/mock-checkout/slave-config.json', '--test-results-server=some.host'])
        logs = self._test_run_with_json_output(runner, port.host.filesystem, expected_exit_code=PerfTestsRunner.EXIT_CODE_BAD_SOURCE_JSON)
        self.assertTrue('Missing slave configuration JSON file: /mock-checkout/slave-config.json' in logs)
        port.host.filesystem.write_text_file('/mock-checkout/slave-config.json', 'bad json')
        self._test_run_with_json_output(runner, port.host.filesystem, expected_exit_code=PerfTestsRunner.EXIT_CODE_BAD_SOURCE_JSON)
        port.host.filesystem.write_text_file('/mock-checkout/slave-config.json', '["another bad json"]')
        self._test_run_with_json_output(runner, port.host.filesystem, expected_exit_code=PerfTestsRunner.EXIT_CODE_BAD_SOURCE_JSON)

    def test_run_with_multiple_repositories(self):
        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json',
            '--test-results-server=some.host'])
        port.repository_paths = lambda: [('webkit', '/mock-checkout'), ('some', '/mock-checkout/some')]
        self._test_run_with_json_output(runner, port.host.filesystem, upload_suceeds=True)
        self.assertEqual(self._load_output_json(runner), [{
            "timestamp": 123456789, "results": self._event_target_wrapper_and_inspector_results,
            "webkit-revision": "5678", "some-revision": "5678", "branch": "webkit-trunk"}])

    def test_run_with_upload_json(self):
        runner, port = self.create_runner_and_setup_results_template(args=['--output-json-path=/mock-checkout/output.json',
            '--test-results-server', 'some.host', '--platform', 'platform1', '--builder-name', 'builder1', '--build-number', '123'])

        self._test_run_with_json_output(runner, port.host.filesystem, upload_suceeds=True)
        generated_json = json.loads(port.host.filesystem.files['/mock-checkout/output.json'])
        self.assertEqual(generated_json[0]['platform'], 'platform1')
        self.assertEqual(generated_json[0]['builder-name'], 'builder1')
        self.assertEqual(generated_json[0]['build-number'], 123)

        self._test_run_with_json_output(runner, port.host.filesystem, upload_suceeds=False, expected_exit_code=PerfTestsRunner.EXIT_CODE_FAILED_UPLOADING)

    def test_upload_json(self):
        runner, port = self.create_runner()
        port.host.filesystem.files['/mock-checkout/some.json'] = 'some content'

        called = []
        upload_single_text_file_throws = False
        upload_single_text_file_return_value = StringIO.StringIO('OK')

        class MockFileUploader:
            def __init__(mock, url, timeout):
                self.assertEqual(url, 'https://some.host/api/test/report')
                self.assertTrue(isinstance(timeout, int) and timeout)
                called.append('FileUploader')

            def upload_single_text_file(mock, filesystem, content_type, filename):
                self.assertEqual(filesystem, port.host.filesystem)
                self.assertEqual(content_type, 'application/json')
                self.assertEqual(filename, 'some.json')
                called.append('upload_single_text_file')
                if upload_single_text_file_throws:
                    raise "Some exception"
                return upload_single_text_file_return_value

        runner._upload_json('some.host', 'some.json', MockFileUploader)
        self.assertEqual(called, ['FileUploader', 'upload_single_text_file'])

        output = OutputCapture()
        output.capture_output()
        upload_single_text_file_return_value = StringIO.StringIO('Some error')
        runner._upload_json('some.host', 'some.json', MockFileUploader)
        _, _, logs = output.restore_output()
        self.assertEqual(logs, 'Uploaded JSON but got a bad response:\nSome error\n')

        # Throwing an exception upload_single_text_file shouldn't blow up _upload_json
        called = []
        upload_single_text_file_throws = True
        runner._upload_json('some.host', 'some.json', MockFileUploader)
        self.assertEqual(called, ['FileUploader', 'upload_single_text_file'])