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143 lines
3.9 KiB
143 lines
3.9 KiB
/*
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* Copyright 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <media/EventMetric.h>
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namespace android {
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/**
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* Unit tests for the EventMetric class.
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*/
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TEST(EventMetricTest, IntDataTypeEmpty) {
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EventMetric<int> metric("MyMetricName", "MetricAttributeName");
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std::map<int, EventStatistics> values;
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metric.ExportValues(
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[&] (int attribute_value, const EventStatistics& value) {
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values[attribute_value] = value;
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});
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EXPECT_TRUE(values.empty());
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}
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TEST(EventMetricTest, IntDataType) {
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EventMetric<int> metric("MyMetricName", "MetricAttributeName");
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std::map<int, EventStatistics> values;
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metric.Record(4, 7);
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metric.Record(5, 8);
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metric.Record(5, 8);
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metric.Record(5, 8);
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metric.Record(6, 8);
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metric.Record(6, 8);
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metric.Record(6, 8);
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metric.ExportValues(
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[&] (int attribute_value, const EventStatistics& value) {
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values[attribute_value] = value;
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});
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ASSERT_EQ(2u, values.size());
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EXPECT_EQ(4, values[7].min);
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EXPECT_EQ(4, values[7].max);
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EXPECT_EQ(4, values[7].mean);
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EXPECT_EQ(1, values[7].count);
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EXPECT_EQ(5, values[8].min);
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EXPECT_EQ(6, values[8].max);
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// This is an approximate value because of the technique we're using.
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EXPECT_NEAR(5.5, values[8].mean, 0.2);
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EXPECT_EQ(6, values[8].count);
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}
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TEST(EventMetricTest, StringDataType) {
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EventMetric<std::string> metric("MyMetricName", "MetricAttributeName");
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std::map<std::string, EventStatistics> values;
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metric.Record(1, "a");
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metric.Record(2, "b");
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metric.Record(2, "b");
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metric.Record(3, "b");
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metric.Record(3, "b");
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metric.ExportValues(
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[&] (std::string attribute_value, const EventStatistics& value) {
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values[attribute_value] = value;
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});
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ASSERT_EQ(2u, values.size());
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EXPECT_EQ(1, values["a"].min);
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EXPECT_EQ(1, values["a"].max);
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EXPECT_EQ(1, values["a"].mean);
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EXPECT_EQ(1, values["a"].count);
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EXPECT_EQ(2, values["b"].min);
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EXPECT_EQ(3, values["b"].max);
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EXPECT_NEAR(2.5, values["b"].mean, 0.2);
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EXPECT_EQ(4, values["b"].count);
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}
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// Helper class that allows us to mock the clock.
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template<typename AttributeType>
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class MockEventTimer : public EventTimer<AttributeType> {
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public:
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explicit MockEventTimer(nsecs_t time_delta_ns,
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EventMetric<AttributeType>* metric)
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: EventTimer<AttributeType>(metric) {
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// Pretend the event started earlier.
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this->start_time_ = systemTime() - time_delta_ns;
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}
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};
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TEST(EventTimerTest, IntDataType) {
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EventMetric<int> metric("MyMetricName", "MetricAttributeName");
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for (int i = 0; i < 5; i++) {
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{
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// Add a mock time delta.
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MockEventTimer<int> metric_timer(i * 1000000, &metric);
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metric_timer.SetAttribute(i % 2);
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}
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}
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std::map<int, EventStatistics> values;
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metric.ExportValues(
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[&] (int attribute_value, const EventStatistics& value) {
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values[attribute_value] = value;
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});
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ASSERT_EQ(2u, values.size());
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EXPECT_LT(values[0].min, values[0].max);
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EXPECT_GE(4000, values[0].max);
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EXPECT_GT(values[0].mean, values[0].min);
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EXPECT_LE(values[0].mean, values[0].max);
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EXPECT_EQ(3, values[0].count);
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EXPECT_LT(values[1].min, values[1].max);
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EXPECT_GE(3000, values[1].max);
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EXPECT_GT(values[1].mean, values[1].min);
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EXPECT_LE(values[1].mean, values[1].max);
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EXPECT_EQ(2, values[1].count);
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}
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} // namespace android
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