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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/metrics/metrics_service.h"
#include "base/command_line.h"
#include "base/functional/bind.h"
#include "base/strings/string_number_conversions.h"
#include "components/metrics/metrics_switches.h"
#include "components/metrics/test/test_metrics_service_client.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace metrics {
namespace {
class MetricsServiceClientTest : public testing::Test {
public:
MetricsServiceClientTest() = default;
MetricsServiceClientTest(const MetricsServiceClientTest&) = delete;
MetricsServiceClientTest& operator=(const MetricsServiceClientTest&) = delete;
~MetricsServiceClientTest() override = default;
};
} // namespace
TEST_F(MetricsServiceClientTest, TestUploadIntervalDefaultsToStandard) {
TestMetricsServiceClient client;
ASSERT_EQ(client.GetStandardUploadInterval(), client.GetUploadInterval());
}
TEST_F(MetricsServiceClientTest, TestModifyMetricsUploadInterval) {
TestMetricsServiceClient client;
// Flip it a few times to make sure we really can modify it. Values are
// arbitrary (but positive, because the upload interval should be).
int specified_upload_sec = 800;
base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
switches::kMetricsUploadIntervalSec,
base::NumberToString(specified_upload_sec));
ASSERT_EQ(base::Seconds(specified_upload_sec), client.GetUploadInterval());
base::CommandLine::ForCurrentProcess()->RemoveSwitch(
switches::kMetricsUploadIntervalSec);
specified_upload_sec = 30;
base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
switches::kMetricsUploadIntervalSec,
base::NumberToString(specified_upload_sec));
ASSERT_EQ(base::Seconds(specified_upload_sec), client.GetUploadInterval());
}
TEST_F(MetricsServiceClientTest, TestUploadIntervalLimitedForDos) {
TestMetricsServiceClient client;
// If we set the upload interval too small, it should be limited to prevent
// the possibility of DOS'ing the backend. This should be a safe guess for a
// value strictly smaller than the DOS limit.
int too_short_upload_sec = 2;
base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
switches::kMetricsUploadIntervalSec,
base::NumberToString(too_short_upload_sec));
// Upload interval should be the DOS rate limit.
ASSERT_EQ(base::Seconds(20), client.GetUploadInterval());
}
} // namespace metrics
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