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How to use log_output method in grail

Best Python code snippet using grail_python
trace_event_unittest.py
Source:trace_event_unittest.py
1#!/usr/bin/env python2# Copyright 2014 The Chromium Authors. All rights reserved.3# Use of this source code is governed by a BSD-style license that can be4# found in the LICENSE file.5import contextlib6import json7import logging8import math9import multiprocessing10import os11import tempfile12import time13import unittest14from py_trace_event import trace_event15from py_trace_event import trace_time16from py_trace_event.trace_event_impl import log17class TraceEventTests(unittest.TestCase):18  def setUp(self):19    tf = tempfile.NamedTemporaryFile(delete=False)20    self._log_path = tf.name21    tf.close()22  def tearDown(self):23    if os.path.exists(self._log_path):24      os.remove(self._log_path)25  @contextlib.contextmanager26  def _test_trace(self, disable=True):27    try:28      trace_event.trace_enable(self._log_path)29      yield30    finally:31      if disable:32        trace_event.trace_disable()33  def testNoImpl(self):34    orig_impl = trace_event.trace_event_impl35    try:36      trace_event.trace_event_impl = None37      self.assertFalse(trace_event.trace_can_enable())38    finally:39      trace_event.trace_event_impl = orig_impl40  def testImpl(self):41    self.assertTrue(trace_event.trace_can_enable())42  def testIsEnabledFalse(self):43    self.assertFalse(trace_event.trace_is_enabled())44  def testIsEnabledTrue(self):45    with self._test_trace():46      self.assertTrue(trace_event.trace_is_enabled())47  def testEnable(self):48    with self._test_trace():49      with open(self._log_path, 'r') as f:50        log_output = json.loads(f.read() + ']')51        self.assertEquals(len(log_output), 1)52        self.assertTrue(trace_event.trace_is_enabled())53        log_output = log_output.pop()54        self.assertEquals(log_output['category'], 'process_argv')55        self.assertEquals(log_output['name'], 'process_argv')56        self.assertTrue(log_output['args']['argv'])57        self.assertEquals(log_output['ph'], 'M')58  def testDoubleEnable(self):59    try:60      with self._test_trace():61        with self._test_trace():62          pass63    except log.TraceException:64      return65    assert False66  def testDisable(self):67    with self._test_trace(disable=False):68      with open(self._log_path, 'r') as f:69        self.assertTrue(trace_event.trace_is_enabled())70        trace_event.trace_disable()71        self.assertEquals(len(json.loads(f.read() + ']')), 1)72        self.assertFalse(trace_event.trace_is_enabled())73  def testDoubleDisable(self):74    with self._test_trace():75      pass76    trace_event.trace_disable()77  def testFlushChanges(self):78    with self._test_trace():79      with open(self._log_path, 'r') as f:80        trace_event.clock_sync('1')81        self.assertEquals(len(json.loads(f.read() + ']')), 1)82        f.seek(0)83        trace_event.trace_flush()84        self.assertEquals(len(json.loads(f.read() + ']')), 2)85  def testFlushNoChanges(self):86    with self._test_trace():87      with open(self._log_path, 'r') as f:88        self.assertEquals(len(json.loads(f.read() + ']')),1)89        f.seek(0)90        trace_event.trace_flush()91        self.assertEquals(len(json.loads(f.read() + ']')), 1)92  def testDoubleFlush(self):93    with self._test_trace():94      with open(self._log_path, 'r') as f:95        trace_event.clock_sync('1')96        self.assertEquals(len(json.loads(f.read() + ']')), 1)97        f.seek(0)98        trace_event.trace_flush()99        trace_event.trace_flush()100        self.assertEquals(len(json.loads(f.read() + ']')), 2)101  def testTraceBegin(self):102    with self._test_trace():103      with open(self._log_path, 'r') as f:104        trace_event.trace_begin('test_event', this='that')105        trace_event.trace_flush()106        log_output = json.loads(f.read() + ']')107        self.assertEquals(len(log_output), 2)108        current_entry = log_output.pop(0)109        self.assertEquals(current_entry['category'], 'process_argv')110        self.assertEquals(current_entry['name'], 'process_argv')111        self.assertTrue( current_entry['args']['argv'])112        self.assertEquals( current_entry['ph'], 'M')113        current_entry = log_output.pop(0)114        self.assertEquals(current_entry['category'], 'python')115        self.assertEquals(current_entry['name'], 'test_event')116        self.assertEquals(current_entry['args']['this'], '\'that\'')117        self.assertEquals(current_entry['ph'], 'B')118  def testTraceEnd(self):119    with self._test_trace():120      with open(self._log_path, 'r') as f:121        trace_event.trace_end('test_event')122        trace_event.trace_flush()123        log_output = json.loads(f.read() + ']')124        self.assertEquals(len(log_output), 2)125        current_entry = log_output.pop(0)126        self.assertEquals(current_entry['category'], 'process_argv')127        self.assertEquals(current_entry['name'], 'process_argv')128        self.assertTrue(current_entry['args']['argv'])129        self.assertEquals(current_entry['ph'], 'M')130        current_entry = log_output.pop(0)131        self.assertEquals(current_entry['category'], 'python')132        self.assertEquals(current_entry['name'], 'test_event')133        self.assertEquals(current_entry['args'], {})134        self.assertEquals(current_entry['ph'], 'E')135  def testTrace(self):136   with self._test_trace():137      with trace_event.trace('test_event', this='that'):138        pass139      trace_event.trace_flush()140      with open(self._log_path, 'r') as f:141        log_output = json.loads(f.read() + ']')142        self.assertEquals(len(log_output), 3)143        current_entry = log_output.pop(0)144        self.assertEquals(current_entry['category'], 'process_argv')145        self.assertEquals(current_entry['name'], 'process_argv')146        self.assertTrue(current_entry['args']['argv'])147        self.assertEquals(current_entry['ph'], 'M')148        current_entry = log_output.pop(0)149        self.assertEquals(current_entry['category'], 'python')150        self.assertEquals(current_entry['name'], 'test_event')151        self.assertEquals(current_entry['args']['this'], '\'that\'')152        self.assertEquals(current_entry['ph'], 'B')153        current_entry = log_output.pop(0)154        self.assertEquals(current_entry['category'], 'python')155        self.assertEquals(current_entry['name'], 'test_event')156        self.assertEquals(current_entry['args'], {})157        self.assertEquals(current_entry['ph'], 'E')158  def testTracedDecorator(self):159    @trace_event.traced("this")160    def test_decorator(this="that"):161      pass162    with self._test_trace():163      test_decorator()164      trace_event.trace_flush()165      with open(self._log_path, 'r') as f:166        log_output = json.loads(f.read() + ']')167        self.assertEquals(len(log_output), 3)168        current_entry = log_output.pop(0)169        self.assertEquals(current_entry['category'], 'process_argv')170        self.assertEquals(current_entry['name'], 'process_argv')171        self.assertTrue(current_entry['args']['argv'])172        self.assertEquals(current_entry['ph'], 'M')173        current_entry = log_output.pop(0)174        self.assertEquals(current_entry['category'], 'python')175        self.assertEquals(current_entry['name'], '__main__.test_decorator')176        self.assertEquals(current_entry['args']['this'], '\'that\'')177        self.assertEquals(current_entry['ph'], 'B')178        current_entry = log_output.pop(0)179        self.assertEquals(current_entry['category'], 'python')180        self.assertEquals(current_entry['name'], '__main__.test_decorator')181        self.assertEquals(current_entry['args'], {})182        self.assertEquals(current_entry['ph'], 'E')183  def testClockSyncWithTs(self):184    with self._test_trace():185      with open(self._log_path, 'r') as f:186        trace_event.clock_sync('id', issue_ts=trace_time.Now())187        trace_event.trace_flush()188        log_output = json.loads(f.read() + ']')189        self.assertEquals(len(log_output), 2)190        current_entry = log_output.pop(0)191        self.assertEquals(current_entry['category'], 'process_argv')192        self.assertEquals(current_entry['name'], 'process_argv')193        self.assertTrue(current_entry['args']['argv'])194        self.assertEquals(current_entry['ph'], 'M')195        current_entry = log_output.pop(0)196        self.assertEquals(current_entry['category'], 'python')197        self.assertEquals(current_entry['name'], 'clock_sync')198        self.assertTrue(current_entry['args']['issue_ts'])199        self.assertEquals(current_entry['ph'], 'c')200  def testClockSyncWithoutTs(self):201    with self._test_trace():202      with open(self._log_path, 'r') as f:203        trace_event.clock_sync('id')204        trace_event.trace_flush()205        log_output = json.loads(f.read() + ']')206        self.assertEquals(len(log_output), 2)207        current_entry = log_output.pop(0)208        self.assertEquals(current_entry['category'], 'process_argv')209        self.assertEquals(current_entry['name'], 'process_argv')210        self.assertTrue(current_entry['args']['argv'])211        self.assertEquals(current_entry['ph'], 'M')212        current_entry = log_output.pop(0)213        self.assertEquals(current_entry['category'], 'python')214        self.assertEquals(current_entry['name'], 'clock_sync')215        self.assertFalse(current_entry['args'].get('issue_ts'))216        self.assertEquals(current_entry['ph'], 'c')217  def testTime(self):218    actual_diff = []219    def func1():220      trace_begin("func1")221      start = time.time()222      time.sleep(0.25)223      end = time.time()224      actual_diff.append(end-start) # Pass via array because of Python scoping225      trace_end("func1")226    with self._test_trace():227      start_ts = time.time()228      trace_event.trace_begin('test')229      end_ts = time.time()230      trace_event.trace_end('test')231      trace_event.trace_flush()232      with open(self._log_path, 'r') as f:233        log_output = json.loads(f.read() + ']')234        self.assertEquals(len(log_output), 3)235        meta_data = log_output[0]236        open_data = log_output[1]237        close_data = log_output[2]238        self.assertEquals(meta_data['category'], 'process_argv')239        self.assertEquals(meta_data['name'], 'process_argv')240        self.assertTrue(meta_data['args']['argv'])241        self.assertEquals(meta_data['ph'], 'M')242        self.assertEquals(open_data['category'], 'python')243        self.assertEquals(open_data['name'], 'test')244        self.assertEquals(open_data['ph'], 'B')245        self.assertEquals(close_data['category'], 'python')246        self.assertEquals(close_data['name'], 'test')247        self.assertEquals(close_data['ph'], 'E')248        event_time_diff = close_data['ts'] - open_data['ts']249        recorded_time_diff = (end_ts - start_ts) * 1000000250        self.assertLess(math.fabs(event_time_diff - recorded_time_diff), 1000)251  def testNestedCalls(self):252    with self._test_trace():253      trace_event.trace_begin('one')254      trace_event.trace_begin('two')255      trace_event.trace_end('two')256      trace_event.trace_end('one')257      trace_event.trace_flush()258      with open(self._log_path, 'r') as f:259        log_output = json.loads(f.read() + ']')260        self.assertEquals(len(log_output), 5)261        meta_data = log_output[0]262        one_open = log_output[1]263        two_open = log_output[2]264        two_close = log_output[3]265        one_close = log_output[4]266        self.assertEquals(meta_data['category'], 'process_argv')267        self.assertEquals(meta_data['name'], 'process_argv')268        self.assertTrue(meta_data['args']['argv'])269        self.assertEquals(meta_data['ph'], 'M')270        self.assertEquals(one_open['category'], 'python')271        self.assertEquals(one_open['name'], 'one')272        self.assertEquals(one_open['ph'], 'B')273        self.assertEquals(one_close['category'], 'python')274        self.assertEquals(one_close['name'], 'one')275        self.assertEquals(one_close['ph'], 'E')276        self.assertEquals(two_open['category'], 'python')277        self.assertEquals(two_open['name'], 'two')278        self.assertEquals(two_open['ph'], 'B')279        self.assertEquals(two_close['category'], 'python')280        self.assertEquals(two_close['name'], 'two')281        self.assertEquals(two_close['ph'], 'E')282        self.assertLessEqual(one_open['ts'], two_open['ts'])283        self.assertGreaterEqual(one_close['ts'], two_close['ts'])284  def testInterleavedCalls(self):285    with self._test_trace():286      trace_event.trace_begin('one')287      trace_event.trace_begin('two')288      trace_event.trace_end('one')289      trace_event.trace_end('two')290      trace_event.trace_flush()291      with open(self._log_path, 'r') as f:292        log_output = json.loads(f.read() + ']')293        self.assertEquals(len(log_output), 5)294        meta_data = log_output[0]295        one_open = log_output[1]296        two_open = log_output[2]297        two_close = log_output[4]298        one_close = log_output[3]299        self.assertEquals(meta_data['category'], 'process_argv')300        self.assertEquals(meta_data['name'], 'process_argv')301        self.assertTrue(meta_data['args']['argv'])302        self.assertEquals(meta_data['ph'], 'M')303        self.assertEquals(one_open['category'], 'python')304        self.assertEquals(one_open['name'], 'one')305        self.assertEquals(one_open['ph'], 'B')306        self.assertEquals(one_close['category'], 'python')307        self.assertEquals(one_close['name'], 'one')308        self.assertEquals(one_close['ph'], 'E')309        self.assertEquals(two_open['category'], 'python')310        self.assertEquals(two_open['name'], 'two')311        self.assertEquals(two_open['ph'], 'B')312        self.assertEquals(two_close['category'], 'python')313        self.assertEquals(two_close['name'], 'two')314        self.assertEquals(two_close['ph'], 'E')315        self.assertLessEqual(one_open['ts'], two_open['ts'])316        self.assertLessEqual(one_close['ts'], two_close['ts'])317  def testMultiprocess(self):318    def child_function():319      with trace_event.trace('child_event'):320        pass321    with self._test_trace():322      trace_event.trace_begin('parent_event')323      trace_event.trace_flush()324      p = multiprocessing.Process(target=child_function)325      p.start()326      self.assertTrue(hasattr(p, "_shimmed_by_trace_event"))327      p.join()328      trace_event.trace_end('parent_event')329      trace_event.trace_flush()330      with open(self._log_path, 'r') as f:331        log_output = json.loads(f.read() + ']')332        self.assertEquals(len(log_output), 5)333        meta_data = log_output[0]334        parent_open = log_output[1]335        child_open = log_output[2]336        child_close = log_output[3]337        parent_close = log_output[4]338        self.assertEquals(meta_data['category'], 'process_argv')339        self.assertEquals(meta_data['name'], 'process_argv')340        self.assertTrue(meta_data['args']['argv'])341        self.assertEquals(meta_data['ph'], 'M')342        self.assertEquals(parent_open['category'], 'python')343        self.assertEquals(parent_open['name'], 'parent_event')344        self.assertEquals(parent_open['ph'], 'B')345        self.assertEquals(child_open['category'], 'python')346        self.assertEquals(child_open['name'], 'child_event')347        self.assertEquals(child_open['ph'], 'B')348        self.assertEquals(child_close['category'], 'python')349        self.assertEquals(child_close['name'], 'child_event')350        self.assertEquals(child_close['ph'], 'E')351        self.assertEquals(parent_close['category'], 'python')352        self.assertEquals(parent_close['name'], 'parent_event')353        self.assertEquals(parent_close['ph'], 'E')354  def testMultiprocessExceptionInChild(self):355    def bad_child():356      trace_event.trace_disable()357    with self._test_trace():358      p = multiprocessing.Pool(1)359      trace_event.trace_begin('parent')360      self.assertRaises(Exception, lambda: p.apply(bad_child, ()))361      p.close()362      p.terminate()363      p.join()364      trace_event.trace_end('parent')365      trace_event.trace_flush()366      with open(self._log_path, 'r') as f:367        log_output = json.loads(f.read() + ']')368        self.assertEquals(len(log_output), 3)369        meta_data = log_output[0]370        parent_open = log_output[1]371        parent_close = log_output[2]372        self.assertEquals(parent_open['category'], 'python')373        self.assertEquals(parent_open['name'], 'parent')374        self.assertEquals(parent_open['ph'], 'B')375        self.assertEquals(parent_close['category'], 'python')376        self.assertEquals(parent_close['name'], 'parent')377        self.assertEquals(parent_close['ph'], 'E')378if __name__ == '__main__':379  logging.getLogger().setLevel(logging.DEBUG)...
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