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- // Copyright 2019 The Chromium Authors. All rights reserved.
- // 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/bind.h"
- #include "base/command_line.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() {}
- MetricsServiceClientTest(const MetricsServiceClientTest&) = delete;
- MetricsServiceClientTest& operator=(const MetricsServiceClientTest&) = delete;
- ~MetricsServiceClientTest() override {}
- };
- } // 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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