diff options
| author | brettw@chromium.org <brettw@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2010-10-14 04:38:38 +0000 |
|---|---|---|
| committer | brettw@chromium.org <brettw@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2010-10-14 04:38:38 +0000 |
| commit | 835d7c811c98f179090c57a827a9c9baa2130435 (patch) | |
| tree | edcff6b2c9029c6f867f650d762837f2485d99fb /base/histogram_unittest.cc | |
| parent | 4b1deac7ba7e7a6bf0425e6ed4db26e0c29daa7f (diff) | |
| download | chromium_src-835d7c811c98f179090c57a827a9c9baa2130435.zip chromium_src-835d7c811c98f179090c57a827a9c9baa2130435.tar.gz chromium_src-835d7c811c98f179090c57a827a9c9baa2130435.tar.bz2 | |
Move Stats, histograms, and field trial into a metrics subdirectory of base and
put them in the base namespace.
TEST=it compiles
BUG=none
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@62510 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/histogram_unittest.cc')
| -rw-r--r-- | base/histogram_unittest.cc | 312 |
1 files changed, 0 insertions, 312 deletions
diff --git a/base/histogram_unittest.cc b/base/histogram_unittest.cc deleted file mode 100644 index 4637a5f..0000000 --- a/base/histogram_unittest.cc +++ /dev/null @@ -1,312 +0,0 @@ -// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// Test of Histogram class - -#include "base/histogram.h" -#include "base/time.h" -#include "testing/gtest/include/gtest/gtest.h" - -using base::TimeDelta; - -namespace { - -class HistogramTest : public testing::Test { -}; - -// Check for basic syntax and use. -TEST(HistogramTest, StartupShutdownTest) { - // Try basic construction - scoped_refptr<Histogram> histogram = Histogram::FactoryGet( - "TestHistogram", 1, 1000, 10, Histogram::kNoFlags); - scoped_refptr<Histogram> histogram1 = Histogram::FactoryGet( - "Test1Histogram", 1, 1000, 10, Histogram::kNoFlags); - - scoped_refptr<Histogram> linear_histogram = LinearHistogram::FactoryGet( - "TestLinearHistogram", 1, 1000, 10, Histogram::kNoFlags); - scoped_refptr<Histogram> linear_histogram1 = LinearHistogram::FactoryGet( - "Test1LinearHistogram", 1, 1000, 10, Histogram::kNoFlags); - - std::vector<int> custom_ranges; - custom_ranges.push_back(1); - custom_ranges.push_back(5); - custom_ranges.push_back(10); - custom_ranges.push_back(20); - custom_ranges.push_back(30); - scoped_refptr<Histogram> custom_histogram = CustomHistogram::FactoryGet( - "TestCustomHistogram", custom_ranges, Histogram::kNoFlags); - scoped_refptr<Histogram> custom_histogram1 = CustomHistogram::FactoryGet( - "Test1CustomHistogram", custom_ranges, Histogram::kNoFlags); - - // Use standard macros (but with fixed samples) - HISTOGRAM_TIMES("Test2Histogram", TimeDelta::FromDays(1)); - HISTOGRAM_COUNTS("Test3Histogram", 30); - - DHISTOGRAM_TIMES("Test4Histogram", TimeDelta::FromDays(1)); - DHISTOGRAM_COUNTS("Test5Histogram", 30); - - HISTOGRAM_ENUMERATION("Test6Histogram", 129, 130); - - // Try to construct samples. - Histogram::SampleSet sample1; - Histogram::SampleSet sample2; - - // Use copy constructor of SampleSet - sample1 = sample2; - Histogram::SampleSet sample3(sample1); - - // Finally test a statistics recorder, without really using it. - StatisticsRecorder recorder; -} - -// Repeat with a recorder present to register with. -TEST(HistogramTest, RecordedStartupTest) { - // Test a statistics recorder, by letting histograms register. - StatisticsRecorder recorder; // This initializes the global state. - - StatisticsRecorder::Histograms histograms; - EXPECT_EQ(0U, histograms.size()); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists - EXPECT_EQ(0U, histograms.size()); - - // Try basic construction - scoped_refptr<Histogram> histogram = Histogram::FactoryGet( - "TestHistogram", 1, 1000, 10, Histogram::kNoFlags); - histograms.clear(); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists - EXPECT_EQ(1U, histograms.size()); - scoped_refptr<Histogram> histogram1 = Histogram::FactoryGet( - "Test1Histogram", 1, 1000, 10, Histogram::kNoFlags); - histograms.clear(); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists - EXPECT_EQ(2U, histograms.size()); - - scoped_refptr<Histogram> linear_histogram = LinearHistogram::FactoryGet( - "TestLinearHistogram", 1, 1000, 10, Histogram::kNoFlags); - histograms.clear(); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists - EXPECT_EQ(3U, histograms.size()); - - scoped_refptr<Histogram> linear_histogram1 = LinearHistogram::FactoryGet( - "Test1LinearHistogram", 1, 1000, 10, Histogram::kNoFlags); - histograms.clear(); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists - EXPECT_EQ(4U, histograms.size()); - - std::vector<int> custom_ranges; - custom_ranges.push_back(1); - custom_ranges.push_back(5); - custom_ranges.push_back(10); - custom_ranges.push_back(20); - custom_ranges.push_back(30); - scoped_refptr<Histogram> custom_histogram = CustomHistogram::FactoryGet( - "TestCustomHistogram", custom_ranges, Histogram::kNoFlags); - scoped_refptr<Histogram> custom_histogram1 = CustomHistogram::FactoryGet( - "TestCustomHistogram", custom_ranges, Histogram::kNoFlags); - - histograms.clear(); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists - EXPECT_EQ(5U, histograms.size()); - - // Use standard macros (but with fixed samples) - HISTOGRAM_TIMES("Test2Histogram", TimeDelta::FromDays(1)); - HISTOGRAM_COUNTS("Test3Histogram", 30); - histograms.clear(); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists - EXPECT_EQ(7U, histograms.size()); - - HISTOGRAM_ENUMERATION("TestEnumerationHistogram", 20, 200); - histograms.clear(); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists - EXPECT_EQ(8U, histograms.size()); - - DHISTOGRAM_TIMES("Test4Histogram", TimeDelta::FromDays(1)); - DHISTOGRAM_COUNTS("Test5Histogram", 30); - histograms.clear(); - StatisticsRecorder::GetHistograms(&histograms); // Load up lists -#ifndef NDEBUG - EXPECT_EQ(10U, histograms.size()); -#else - EXPECT_EQ(8U, histograms.size()); -#endif -} - -TEST(HistogramTest, RangeTest) { - StatisticsRecorder recorder; - StatisticsRecorder::Histograms histograms; - - recorder.GetHistograms(&histograms); - EXPECT_EQ(0U, histograms.size()); - - scoped_refptr<Histogram> histogram = Histogram::FactoryGet( - "Histogram", 1, 64, 8, Histogram::kNoFlags); // As per header file. - // Check that we got a nice exponential when there was enough rooom. - EXPECT_EQ(0, histogram->ranges(0)); - int power_of_2 = 1; - for (int i = 1; i < 8; i++) { - EXPECT_EQ(power_of_2, histogram->ranges(i)); - power_of_2 *= 2; - } - EXPECT_EQ(INT_MAX, histogram->ranges(8)); - - scoped_refptr<Histogram> short_histogram = Histogram::FactoryGet( - "Histogram Shortened", 1, 7, 8, Histogram::kNoFlags); - // Check that when the number of buckets is short, we get a linear histogram - // for lack of space to do otherwise. - for (int i = 0; i < 8; i++) - EXPECT_EQ(i, short_histogram->ranges(i)); - EXPECT_EQ(INT_MAX, short_histogram->ranges(8)); - - scoped_refptr<Histogram> linear_histogram = LinearHistogram::FactoryGet( - "Linear", 1, 7, 8, Histogram::kNoFlags); - // We also get a nice linear set of bucket ranges when we ask for it - for (int i = 0; i < 8; i++) - EXPECT_EQ(i, linear_histogram->ranges(i)); - EXPECT_EQ(INT_MAX, linear_histogram->ranges(8)); - - scoped_refptr<Histogram> linear_broad_histogram = LinearHistogram::FactoryGet( - "Linear widened", 2, 14, 8, Histogram::kNoFlags); - // ...but when the list has more space, then the ranges naturally spread out. - for (int i = 0; i < 8; i++) - EXPECT_EQ(2 * i, linear_broad_histogram->ranges(i)); - EXPECT_EQ(INT_MAX, linear_broad_histogram->ranges(8)); - - scoped_refptr<Histogram> transitioning_histogram = - Histogram::FactoryGet("LinearAndExponential", 1, 32, 15, - Histogram::kNoFlags); - // When space is a little tight, we transition from linear to exponential. - EXPECT_EQ(0, transitioning_histogram->ranges(0)); - EXPECT_EQ(1, transitioning_histogram->ranges(1)); - EXPECT_EQ(2, transitioning_histogram->ranges(2)); - EXPECT_EQ(3, transitioning_histogram->ranges(3)); - EXPECT_EQ(4, transitioning_histogram->ranges(4)); - EXPECT_EQ(5, transitioning_histogram->ranges(5)); - EXPECT_EQ(6, transitioning_histogram->ranges(6)); - EXPECT_EQ(7, transitioning_histogram->ranges(7)); - EXPECT_EQ(9, transitioning_histogram->ranges(8)); - EXPECT_EQ(11, transitioning_histogram->ranges(9)); - EXPECT_EQ(14, transitioning_histogram->ranges(10)); - EXPECT_EQ(17, transitioning_histogram->ranges(11)); - EXPECT_EQ(21, transitioning_histogram->ranges(12)); - EXPECT_EQ(26, transitioning_histogram->ranges(13)); - EXPECT_EQ(32, transitioning_histogram->ranges(14)); - EXPECT_EQ(INT_MAX, transitioning_histogram->ranges(15)); - - std::vector<int> custom_ranges; - custom_ranges.push_back(0); - custom_ranges.push_back(9); - custom_ranges.push_back(10); - custom_ranges.push_back(11); - custom_ranges.push_back(300); - scoped_refptr<Histogram> test_custom_histogram = CustomHistogram::FactoryGet( - "TestCustomRangeHistogram", custom_ranges, Histogram::kNoFlags); - - EXPECT_EQ(custom_ranges[0], test_custom_histogram->ranges(0)); - EXPECT_EQ(custom_ranges[1], test_custom_histogram->ranges(1)); - EXPECT_EQ(custom_ranges[2], test_custom_histogram->ranges(2)); - EXPECT_EQ(custom_ranges[3], test_custom_histogram->ranges(3)); - EXPECT_EQ(custom_ranges[4], test_custom_histogram->ranges(4)); - - recorder.GetHistograms(&histograms); - EXPECT_EQ(6U, histograms.size()); -} - -TEST(HistogramTest, CustomRangeTest) { - StatisticsRecorder recorder; - StatisticsRecorder::Histograms histograms; - - // Check that missing leading zero is handled by an auto-insertion. - std::vector<int> custom_ranges; - // Don't include a zero. - custom_ranges.push_back(9); - custom_ranges.push_back(10); - custom_ranges.push_back(11); - scoped_refptr<Histogram> test_custom_histogram = CustomHistogram::FactoryGet( - "TestCustomRangeHistogram", custom_ranges, Histogram::kNoFlags); - - EXPECT_EQ(0, test_custom_histogram->ranges(0)); // Auto added - EXPECT_EQ(custom_ranges[0], test_custom_histogram->ranges(1)); - EXPECT_EQ(custom_ranges[1], test_custom_histogram->ranges(2)); - EXPECT_EQ(custom_ranges[2], test_custom_histogram->ranges(3)); - - // Check that unsorted data with dups is handled gracefully. - const int kSmall = 7; - const int kMid = 8; - const int kBig = 9; - custom_ranges.clear(); - custom_ranges.push_back(kBig); - custom_ranges.push_back(kMid); - custom_ranges.push_back(kSmall); - custom_ranges.push_back(kSmall); - custom_ranges.push_back(kMid); - custom_ranges.push_back(0); // Push an explicit zero. - custom_ranges.push_back(kBig); - - scoped_refptr<Histogram> unsorted_histogram = CustomHistogram::FactoryGet( - "TestCustomUnsortedDupedHistogram", custom_ranges, Histogram::kNoFlags); - EXPECT_EQ(0, unsorted_histogram->ranges(0)); - EXPECT_EQ(kSmall, unsorted_histogram->ranges(1)); - EXPECT_EQ(kMid, unsorted_histogram->ranges(2)); - EXPECT_EQ(kBig, unsorted_histogram->ranges(3)); -} - - -// Make sure histogram handles out-of-bounds data gracefully. -TEST(HistogramTest, BoundsTest) { - const size_t kBucketCount = 50; - scoped_refptr<Histogram> histogram = Histogram::FactoryGet( - "Bounded", 10, 100, kBucketCount, Histogram::kNoFlags); - - // Put two samples "out of bounds" above and below. - histogram->Add(5); - histogram->Add(-50); - - histogram->Add(100); - histogram->Add(10000); - - // Verify they landed in the underflow, and overflow buckets. - Histogram::SampleSet sample; - histogram->SnapshotSample(&sample); - EXPECT_EQ(2, sample.counts(0)); - EXPECT_EQ(0, sample.counts(1)); - size_t array_size = histogram->bucket_count(); - EXPECT_EQ(kBucketCount, array_size); - EXPECT_EQ(0, sample.counts(array_size - 2)); - EXPECT_EQ(2, sample.counts(array_size - 1)); -} - -// Check to be sure samples land as expected is "correct" buckets. -TEST(HistogramTest, BucketPlacementTest) { - scoped_refptr<Histogram> histogram = Histogram::FactoryGet( - "Histogram", 1, 64, 8, Histogram::kNoFlags); // As per header file. - - // Check that we got a nice exponential since there was enough rooom. - EXPECT_EQ(0, histogram->ranges(0)); - int power_of_2 = 1; - for (int i = 1; i < 8; i++) { - EXPECT_EQ(power_of_2, histogram->ranges(i)); - power_of_2 *= 2; - } - EXPECT_EQ(INT_MAX, histogram->ranges(8)); - - // Add i+1 samples to the i'th bucket. - histogram->Add(0); - power_of_2 = 1; - for (int i = 1; i < 8; i++) { - for (int j = 0; j <= i; j++) - histogram->Add(power_of_2); - power_of_2 *= 2; - } - // Leave overflow bucket empty. - - // Check to see that the bucket counts reflect our additions. - Histogram::SampleSet sample; - histogram->SnapshotSample(&sample); - EXPECT_EQ(INT_MAX, histogram->ranges(8)); - for (int i = 0; i < 8; i++) - EXPECT_EQ(i + 1, sample.counts(i)); -} - - -} // namespace |