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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/debug/dump_without_crashing.h"
#include "base/hash/hash.h"
#include "base/location.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/scoped_mock_clock_override.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base::debug {
class DumpWithoutCrashingTest : public testing::Test {
public:
static void DummyDumpWithoutCrashing() { number_of_dump_calls_++; }
static int number_of_dump_calls() { return number_of_dump_calls_; }
protected:
void SetUp() override {
SetDumpWithoutCrashingFunction(
&DumpWithoutCrashingTest::DummyDumpWithoutCrashing);
number_of_dump_calls_ = 0;
}
void TearDown() override {
SetDumpWithoutCrashingFunction(nullptr);
ResetDumpWithoutCrashingThrottlingForTesting();
}
// Set override.
ScopedMockClockOverride clock_;
const base::HistogramTester histogram_tester_;
const base::Location location1_ = FROM_HERE;
const base::Location location2_ = FROM_HERE;
const size_t unique_identifier1_ =
base::FastHash("DumpWithoutCrashingFirstTest");
const size_t unique_identifier2_ =
base::FastHash("DumpWithoutCrashingSecondTest");
private:
static int number_of_dump_calls_;
};
int DumpWithoutCrashingTest::number_of_dump_calls_ = 0;
TEST_F(DumpWithoutCrashingTest, DumpWithoutCrashingWithLocation) {
EXPECT_EQ(0, DumpWithoutCrashingTest::number_of_dump_calls());
histogram_tester_.ExpectBucketCount("Stability.DumpWithoutCrashingStatus",
DumpWithoutCrashingStatus::kThrottled, 0);
histogram_tester_.ExpectBucketCount("Stability.DumpWithoutCrashingStatus",
DumpWithoutCrashingStatus::kUploaded, 0);
// The first call to DumpWithoutCrashing will always capture the dump and
// will return true
EXPECT_TRUE(DumpWithoutCrashing(location1_, base::Seconds(1)));
EXPECT_EQ(1, DumpWithoutCrashingTest::number_of_dump_calls());
histogram_tester_.ExpectBucketCount("Stability.DumpWithoutCrashingStatus",
DumpWithoutCrashingStatus::kThrottled, 0);
histogram_tester_.ExpectBucketCount("Stability.DumpWithoutCrashingStatus",
DumpWithoutCrashingStatus::kUploaded, 1);
// If DumpWithoutCrashing is called within 1 second, expected result is false.
EXPECT_FALSE(DumpWithoutCrashing(location1_, base::Seconds(1)));
EXPECT_EQ(1, DumpWithoutCrashingTest::number_of_dump_calls());
// For testing, the time for capturing dump again is 1 second and if the
// function is called after 1 second, it will return true.
clock_.Advance(Seconds(2));
EXPECT_TRUE(DumpWithoutCrashing(location1_, base::Seconds(1)));
EXPECT_EQ(2, DumpWithoutCrashingTest::number_of_dump_calls());
histogram_tester_.ExpectBucketCount("Stability.DumpWithoutCrashingStatus",
DumpWithoutCrashingStatus::kThrottled, 1);
histogram_tester_.ExpectBucketCount("Stability.DumpWithoutCrashingStatus",
DumpWithoutCrashingStatus::kUploaded, 2);
EXPECT_TRUE(DumpWithoutCrashing(location2_, base::Seconds(1)));
EXPECT_EQ(3, DumpWithoutCrashingTest::number_of_dump_calls());
EXPECT_FALSE(DumpWithoutCrashing(location2_, base::Seconds(1)));
EXPECT_EQ(3, DumpWithoutCrashingTest::number_of_dump_calls());
histogram_tester_.ExpectBucketCount("Stability.DumpWithoutCrashingStatus",
DumpWithoutCrashingStatus::kThrottled, 2);
histogram_tester_.ExpectBucketCount("Stability.DumpWithoutCrashingStatus",
DumpWithoutCrashingStatus::kUploaded, 3);
}
} // namespace base::debug
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