108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
/*
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* Copyright (C) 2015 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 <base/files/file_util.h>
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#include <base/files/scoped_temp_dir.h>
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include "metrics/c_metrics_library.h"
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#include "metrics/metrics_library.h"
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class MetricsLibraryTest : public testing::Test {
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protected:
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virtual void SetUp() {
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ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
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lib_.InitForTest(temp_dir_.path());
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// Defeat metrics enabled caching between tests.
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lib_.cached_enabled_time_ = 0;
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}
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void SetMetricsConsent(bool enabled) {
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if (enabled) {
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ASSERT_EQ(base::WriteFile(lib_.consent_file_, "", 0), 0);
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} else {
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ASSERT_TRUE(base::DeleteFile(lib_.consent_file_, false));
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}
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}
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void VerifyEnabledCacheHit(bool to_value);
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void VerifyEnabledCacheEviction(bool to_value);
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MetricsLibrary lib_;
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base::ScopedTempDir temp_dir_;
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};
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TEST_F(MetricsLibraryTest, AreMetricsEnabledFalse) {
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SetMetricsConsent(false);
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EXPECT_FALSE(lib_.AreMetricsEnabled());
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}
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TEST_F(MetricsLibraryTest, AreMetricsEnabledTrue) {
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SetMetricsConsent(true);
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EXPECT_TRUE(lib_.AreMetricsEnabled());
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}
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void MetricsLibraryTest::VerifyEnabledCacheHit(bool to_value) {
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// We might step from one second to the next one time, but not 100
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// times in a row.
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for (int i = 0; i < 100; ++i) {
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lib_.cached_enabled_time_ = 0;
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SetMetricsConsent(to_value);
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lib_.AreMetricsEnabled();
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// If we check the metrics status twice in a row, we use the cached value
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// the second time.
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SetMetricsConsent(!to_value);
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if (lib_.AreMetricsEnabled() == to_value)
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return;
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}
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ADD_FAILURE() << "Did not see evidence of caching";
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}
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void MetricsLibraryTest::VerifyEnabledCacheEviction(bool to_value) {
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lib_.cached_enabled_time_ = 0;
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SetMetricsConsent(!to_value);
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ASSERT_EQ(!to_value, lib_.AreMetricsEnabled());
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SetMetricsConsent(to_value);
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// Sleep one second (or cheat to be faster) and check that we are not using
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// the cached value.
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--lib_.cached_enabled_time_;
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ASSERT_EQ(to_value, lib_.AreMetricsEnabled());
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}
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TEST_F(MetricsLibraryTest, AreMetricsEnabledCaching) {
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VerifyEnabledCacheHit(false);
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VerifyEnabledCacheHit(true);
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VerifyEnabledCacheEviction(false);
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VerifyEnabledCacheEviction(true);
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}
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TEST_F(MetricsLibraryTest, AreMetricsEnabledNoCaching) {
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// disable caching.
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lib_.use_caching_ = false;
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// Checking the consent repeatedly should return the right result.
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for (int i=0; i<100; ++i) {
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SetMetricsConsent(true);
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ASSERT_EQ(true, lib_.AreMetricsEnabled());
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SetMetricsConsent(false);
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ASSERT_EQ(false, lib_.AreMetricsEnabled());
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}
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}
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