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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "uploader/metrics_log_base.h"
#include <string>
#include <base/metrics/bucket_ranges.h>
#include <base/metrics/sample_vector.h>
#include <gtest/gtest.h>
#include "uploader/proto/chrome_user_metrics_extension.pb.h"
namespace metrics {
namespace {
class TestMetricsLogBase : public MetricsLogBase {
public:
TestMetricsLogBase()
: MetricsLogBase("client_id", 1, MetricsLogBase::ONGOING_LOG, "1.2.3.4") {
}
virtual ~TestMetricsLogBase() {}
using MetricsLogBase::uma_proto;
private:
DISALLOW_COPY_AND_ASSIGN(TestMetricsLogBase);
};
} // namespace
TEST(MetricsLogBaseTest, LogType) {
MetricsLogBase log1("id", 0, MetricsLogBase::ONGOING_LOG, "1.2.3");
EXPECT_EQ(MetricsLogBase::ONGOING_LOG, log1.log_type());
MetricsLogBase log2("id", 0, MetricsLogBase::INITIAL_STABILITY_LOG, "1.2.3");
EXPECT_EQ(MetricsLogBase::INITIAL_STABILITY_LOG, log2.log_type());
}
TEST(MetricsLogBaseTest, EmptyRecord) {
MetricsLogBase log("totally bogus client ID", 137,
MetricsLogBase::ONGOING_LOG, "bogus version");
log.set_hardware_class("sample-class");
log.CloseLog();
std::string encoded;
log.GetEncodedLog(&encoded);
// A couple of fields are hard to mock, so these will be copied over directly
// for the expected output.
metrics::ChromeUserMetricsExtension parsed;
ASSERT_TRUE(parsed.ParseFromString(encoded));
metrics::ChromeUserMetricsExtension expected;
expected.set_client_id(5217101509553811875); // Hashed bogus client ID
expected.set_session_id(137);
expected.mutable_system_profile()->set_build_timestamp(
parsed.system_profile().build_timestamp());
expected.mutable_system_profile()->set_app_version("bogus version");
expected.mutable_system_profile()->mutable_hardware()->set_hardware_class(
"sample-class");
EXPECT_EQ(expected.SerializeAsString(), encoded);
}
TEST(MetricsLogBaseTest, HistogramBucketFields) {
// Create buckets: 1-5, 5-7, 7-8, 8-9, 9-10, 10-11, 11-12.
base::BucketRanges ranges(8);
ranges.set_range(0, 1);
ranges.set_range(1, 5);
ranges.set_range(2, 7);
ranges.set_range(3, 8);
ranges.set_range(4, 9);
ranges.set_range(5, 10);
ranges.set_range(6, 11);
ranges.set_range(7, 12);
base::SampleVector samples(&ranges);
samples.Accumulate(3, 1); // Bucket 1-5.
samples.Accumulate(6, 1); // Bucket 5-7.
samples.Accumulate(8, 1); // Bucket 8-9. (7-8 skipped)
samples.Accumulate(10, 1); // Bucket 10-11. (9-10 skipped)
samples.Accumulate(11, 1); // Bucket 11-12.
TestMetricsLogBase log;
log.RecordHistogramDelta("Test", samples);
const metrics::ChromeUserMetricsExtension* uma_proto = log.uma_proto();
const metrics::HistogramEventProto& histogram_proto =
uma_proto->histogram_event(uma_proto->histogram_event_size() - 1);
// Buckets with samples: 1-5, 5-7, 8-9, 10-11, 11-12.
// Should become: 1-/, 5-7, /-9, 10-/, /-12.
ASSERT_EQ(5, histogram_proto.bucket_size());
// 1-5 becomes 1-/ (max is same as next min).
EXPECT_TRUE(histogram_proto.bucket(0).has_min());
EXPECT_FALSE(histogram_proto.bucket(0).has_max());
EXPECT_EQ(1, histogram_proto.bucket(0).min());
// 5-7 stays 5-7 (no optimization possible).
EXPECT_TRUE(histogram_proto.bucket(1).has_min());
EXPECT_TRUE(histogram_proto.bucket(1).has_max());
EXPECT_EQ(5, histogram_proto.bucket(1).min());
EXPECT_EQ(7, histogram_proto.bucket(1).max());
// 8-9 becomes /-9 (min is same as max - 1).
EXPECT_FALSE(histogram_proto.bucket(2).has_min());
EXPECT_TRUE(histogram_proto.bucket(2).has_max());
EXPECT_EQ(9, histogram_proto.bucket(2).max());
// 10-11 becomes 10-/ (both optimizations apply, omit max is prioritized).
EXPECT_TRUE(histogram_proto.bucket(3).has_min());
EXPECT_FALSE(histogram_proto.bucket(3).has_max());
EXPECT_EQ(10, histogram_proto.bucket(3).min());
// 11-12 becomes /-12 (last record must keep max, min is same as max - 1).
EXPECT_FALSE(histogram_proto.bucket(4).has_min());
EXPECT_TRUE(histogram_proto.bucket(4).has_max());
EXPECT_EQ(12, histogram_proto.bucket(4).max());
}
} // namespace metrics
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