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// Copyright 2025 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/test/metrics/histogram_tester.h"
#include "chrome/browser/picture_in_picture/document_picture_in_picture_mixin_test_base.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "components/ukm/test_ukm_recorder.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "net/dns/mock_host_resolver.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom-shared.h"
namespace {
constexpr char kBlinkUseCounterHistogram[] = "Blink.UseCounter.Features";
constexpr char kHost[] = "a.com";
constexpr char kAutoDocumentPipPage[] =
"/media/picture-in-picture/autopip-document.html";
constexpr char kDocumentPipPage[] =
"/media/picture-in-picture/document-pip.html";
constexpr char kVideoConferencingPage[] =
"/media/picture-in-picture/video-conferencing.html";
class PictureInPictureMetricIntegrationTest
: public MixinBasedInProcessBrowserTest {
public:
PictureInPictureMetricIntegrationTest() = default;
protected:
void SetUpOnMainThread() override {
host_resolver()->AddRule("*", "127.0.0.1");
embedded_https_test_server().ServeFilesFromSourceDirectory(
"chrome/test/data");
ASSERT_TRUE(embedded_https_test_server().Start());
ukm_recorder_ = std::make_unique<ukm::TestAutoSetUkmRecorder>();
histogram_tester_ = std::make_unique<base::HistogramTester>();
}
ukm::TestAutoSetUkmRecorder* ukm_recorder() { return ukm_recorder_.get(); }
base::HistogramTester* histogram_tester() { return histogram_tester_.get(); }
content::WebContents* web_contents() const {
return browser()->tab_strip_model()->GetActiveWebContents();
}
DocumentPictureInPictureMixinTestBase& picture_in_picture_test_base() {
return picture_in_picture_test_base_;
}
bool RecordedMetricForBlinkCounterUKMEntry(
const blink::mojom::WebFeature& expected_entry,
const GURL& expected_url) {
const auto& entries = ukm_recorder()->GetEntriesByName(
ukm::builders::Blink_UseCounter::kEntryName);
for (const ukm::mojom::UkmEntry* entry : entries) {
const ukm::UkmSource* src =
ukm_recorder()->GetSourceForSourceId(entry->source_id);
if (src->url() != expected_url) {
continue;
}
const int64_t* metric = ukm_recorder()->GetEntryMetric(
entry, ukm::builders::Blink_UseCounter::kFeatureName);
if (*metric == static_cast<int>(expected_entry)) {
return true;
}
}
return false;
}
void ExpectBlinkCounterUMABucketCount(const blink::mojom::WebFeature& sample,
base::HistogramBase::Count32 count) {
histogram_tester()->ExpectBucketCount(kBlinkUseCounterHistogram, sample,
count);
}
private:
DocumentPictureInPictureMixinTestBase picture_in_picture_test_base_{
&mixin_host_};
std::unique_ptr<ukm::TestAutoSetUkmRecorder> ukm_recorder_;
std::unique_ptr<base::HistogramTester> histogram_tester_;
};
IN_PROC_BROWSER_TEST_F(PictureInPictureMetricIntegrationTest,
MetricsRecorded_MediaSessionEnterPictureInPicture) {
// Navigate to a page that registers for the enterpictureinpicture action
// handler.
const auto& test_page_url =
embedded_https_test_server().GetURL(kHost, kAutoDocumentPipPage);
picture_in_picture_test_base().NavigateToUrl(browser(), test_page_url);
picture_in_picture_test_base().WaitForPageLoad(web_contents());
// Close browser to trigger metric recording.
CloseBrowserSynchronously(browser());
// Verify that a UKM metric entry for Blink_UseCounter was recorded.
ASSERT_TRUE(RecordedMetricForBlinkCounterUKMEntry(
blink::mojom::WebFeature::kMediaSessionEnterPictureInPicture,
test_page_url));
// Verify the expected Blink_UseCounter UMA bucket count.
ExpectBlinkCounterUMABucketCount(
blink::mojom::WebFeature::kMediaSessionEnterPictureInPicture, 1);
}
IN_PROC_BROWSER_TEST_F(PictureInPictureMetricIntegrationTest,
MetricsNotRecorded_MediaSessionEnterPictureInPicture) {
// Navigate to a page that does not register for the enterpictureinpicture
// action handler.
const auto& test_page_url =
embedded_https_test_server().GetURL(kHost, kDocumentPipPage);
picture_in_picture_test_base().NavigateToUrl(browser(), test_page_url);
picture_in_picture_test_base().WaitForPageLoad(web_contents());
// Close browser to trigger metric recording.
CloseBrowserSynchronously(browser());
// Verify that a UKM metric entry for Blink_UseCounter was not recorded.
ASSERT_FALSE(RecordedMetricForBlinkCounterUKMEntry(
blink::mojom::WebFeature::kMediaSessionEnterPictureInPicture,
test_page_url));
// Verify the expected Blink_UseCounter UMA bucket count.
ExpectBlinkCounterUMABucketCount(
blink::mojom::WebFeature::kMediaSessionEnterPictureInPicture, 0);
}
IN_PROC_BROWSER_TEST_F(
PictureInPictureMetricIntegrationTest,
MetricsNotRecorded_MediaSessionEnterPictureInPictureRandomHandler) {
// Navigate to a page that registers various media session action handlers,
// except for enterpictureinpicture.
const auto& test_page_url =
embedded_https_test_server().GetURL(kHost, kVideoConferencingPage);
picture_in_picture_test_base().NavigateToUrl(browser(), test_page_url);
picture_in_picture_test_base().WaitForPageLoad(web_contents());
// Close browser to trigger metric recording.
CloseBrowserSynchronously(browser());
// Verify that a UKM metric entry for Blink_UseCounter was not recorded.
ASSERT_FALSE(RecordedMetricForBlinkCounterUKMEntry(
blink::mojom::WebFeature::kMediaSessionEnterPictureInPicture,
test_page_url));
// Verify the expected Blink_UseCounter UMA bucket count.
ExpectBlinkCounterUMABucketCount(
blink::mojom::WebFeature::kMediaSessionEnterPictureInPicture, 0);
}
} // namespace
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