perf_profiler_unittest.py revision 6e8cce623b6e4fe0c9e4af605d675dd9d0338c38
1# Copyright 2013 The Chromium Authors. All rights reserved. 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4import logging 5import os 6import unittest 7 8from telemetry.core import util 9from telemetry.core.platform.profiler import perf_profiler 10from telemetry.unittest import options_for_unittests 11from telemetry.unittest import simple_mock 12 13 14class TestPerfProfiler(unittest.TestCase): 15 def testPerfProfiler(self): 16 options = options_for_unittests.GetCopy() 17 if not perf_profiler.PerfProfiler.is_supported(options.browser_type): 18 logging.warning('PerfProfiler is not supported. Skipping test') 19 return 20 21 profile_file = os.path.join( 22 util.GetUnittestDataDir(), 'perf_report_output.txt') 23 with open(profile_file) as f: 24 perf_report_output = f.read() 25 26 mock_popen = simple_mock.MockObject() 27 mock_popen.ExpectCall('communicate').WillReturn([perf_report_output]) 28 29 mock_subprocess = simple_mock.MockObject() 30 mock_subprocess.ExpectCall( 31 'Popen').WithArgs(simple_mock.DONT_CARE).WillReturn(mock_popen) 32 mock_subprocess.SetAttribute('PIPE', simple_mock.MockObject()) 33 34 real_subprocess = perf_profiler.subprocess 35 perf_profiler.subprocess = mock_subprocess 36 try: 37 self.assertEqual( 38 perf_profiler.PerfProfiler.GetTopSamples(profile_file, 10), 39 { 'v8::internal::StaticMarkingVisitor::MarkMapContents': 63615201, 40 'v8::internal::RelocIterator::next': 38271931, 41 'v8::internal::LAllocator::MeetConstraintsBetween': 42913933, 42 'v8::internal::FlexibleBodyVisitor::Visit': 31909537, 43 'v8::internal::LiveRange::CreateAssignedOperand': 42913933, 44 'void v8::internal::RelocInfo::Visit': 96878864, 45 'WebCore::HTMLTokenizer::nextToken': 48240439, 46 'v8::internal::Scanner::ScanIdentifierOrKeyword': 46054550, 47 'sk_memset32_SSE2': 45121317, 48 'v8::internal::HeapObject::Size': 39786862 49 }) 50 finally: 51 perf_profiler.subprocess = real_subprocess 52