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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string_view>
#include "build/build_config.h"
#include "chrome/browser/page_load_metrics/integration_tests/metric_integration_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "components/page_load_metrics/browser/page_load_metrics_util.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "services/metrics/public/cpp/ukm_builders.h"
using ukm::builders::Graphics_Smoothness_FrameSequence;
using ukm::builders::Graphics_Smoothness_NormalizedPercentDroppedFrames;
namespace {
bool ExtractUKMSmoothnessMetric(const ukm::TestUkmRecorder& ukm_recorder,
std::string_view entry_name,
std::string_view metric_name,
int64_t* extracted_value) {
std::map<ukm::SourceId, ukm::mojom::UkmEntryPtr> merged_entries =
ukm_recorder.GetMergedEntriesByName(entry_name);
EXPECT_EQ(1ul, merged_entries.size());
if (merged_entries.size() != 1u)
return false;
const auto& kv = merged_entries.begin();
auto* metric_value =
ukm::TestUkmRecorder::GetEntryMetric(kv->second.get(), metric_name);
if (!metric_value)
return false;
*extracted_value = *metric_value;
return true;
}
} // namespace
// TODO(crbug.com/40934889): Re-enable this test
#if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
#define MAYBE_FrameSequenceAndAveragePercentDroppedUKMs \
DISABLED_FrameSequenceAndAveragePercentDroppedUKMs
#else
#define MAYBE_FrameSequenceAndAveragePercentDroppedUKMs \
FrameSequenceAndAveragePercentDroppedUKMs
#endif
IN_PROC_BROWSER_TEST_F(MetricIntegrationTest,
MAYBE_FrameSequenceAndAveragePercentDroppedUKMs) {
LoadHTML(R"HTML(<div id='animate' style='width: 20px; height: 20px'></div>
<img src="images/lcp-16x16.png"></img>
<script>
runtest = async() => {
const promise = new Promise(resolve => {
var r = 0;
function run() {
if (r >= 500) {
resolve(true);
return;
}
const now = new Date();
while ((new Date() - now) < 20) {}
animate.style.backgroundColor = `rgb(${r * 2}, 0, 0)`;
requestAnimationFrame(run);
++r;
}
run();
});
return await promise;
};
</script>
)HTML");
ASSERT_TRUE(EvalJs(web_contents(), "runtest()").ExtractBool());
// Finish session.
web_contents()->ClosePage();
ui_test_utils::WaitForBrowserToClose(browser());
int64_t fsm_pdf_value;
// FrameSequenceMetric export should show a value.
ASSERT_TRUE(ExtractUKMSmoothnessMetric(
ukm_recorder(), Graphics_Smoothness_FrameSequence::kEntryName,
Graphics_Smoothness_FrameSequence::kPercentDroppedFramesName,
&fsm_pdf_value));
// Some of the frames should be dropped. It is not possible to measure the
// exact number of dropped frames, so validate that it is non-zero.
EXPECT_NE(fsm_pdf_value, 0);
}
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