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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 "chrome/browser/performance_manager/observers/page_load_metrics_observer.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "components/ukm/test_ukm_recorder.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/fenced_frame_test_util.h"
#include "content/public/test/prerender_test_util.h"
#include "net/dns/mock_host_resolver.h"
#include "services/metrics/public/cpp/ukm_builders.h"
class PageLoadMetricsObserverBrowserTest : public InProcessBrowserTest {
public:
PageLoadMetricsObserverBrowserTest() = default;
~PageLoadMetricsObserverBrowserTest() override = default;
PageLoadMetricsObserverBrowserTest(
const PageLoadMetricsObserverBrowserTest&) = delete;
PageLoadMetricsObserverBrowserTest& operator=(
const PageLoadMetricsObserverBrowserTest&) = delete;
void SetUpOnMainThread() override {
host_resolver()->AddRule("*", "127.0.0.1");
ASSERT_TRUE(embedded_test_server()->Start());
}
void PreRunTestOnMainThread() override {
InProcessBrowserTest::PreRunTestOnMainThread();
histogram_tester_ = std::make_unique<base::HistogramTester>();
test_ukm_recorder_ = std::make_unique<ukm::TestAutoSetUkmRecorder>();
}
content::WebContents* GetWebContents() {
return browser()->tab_strip_model()->GetActiveWebContents();
}
base::HistogramTester* histogram_tester() { return histogram_tester_.get(); }
ukm::TestAutoSetUkmRecorder* test_ukm_recorder() {
return test_ukm_recorder_.get();
}
private:
std::unique_ptr<base::HistogramTester> histogram_tester_;
std::unique_ptr<ukm::TestAutoSetUkmRecorder> test_ukm_recorder_;
};
class PageLoadMetricsObserverPrerenderBrowserTest
: public PageLoadMetricsObserverBrowserTest {
public:
PageLoadMetricsObserverPrerenderBrowserTest()
: prerender_helper_(base::BindRepeating(
&PageLoadMetricsObserverPrerenderBrowserTest::GetWebContents,
base::Unretained(this))) {}
~PageLoadMetricsObserverPrerenderBrowserTest() override = default;
PageLoadMetricsObserverPrerenderBrowserTest(
const PageLoadMetricsObserverPrerenderBrowserTest&) = delete;
PageLoadMetricsObserverPrerenderBrowserTest& operator=(
const PageLoadMetricsObserverPrerenderBrowserTest&) = delete;
void SetUp() override {
prerender_helper_.RegisterServerRequestMonitor(embedded_test_server());
PageLoadMetricsObserverBrowserTest::SetUp();
}
content::test::PrerenderTestHelper& prerender_test_helper() {
return prerender_helper_;
}
private:
content::test::PrerenderTestHelper prerender_helper_;
};
class PageLoadMetricsObserverFencedFrameBrowserTest
: public PageLoadMetricsObserverBrowserTest {
public:
PageLoadMetricsObserverFencedFrameBrowserTest() = default;
~PageLoadMetricsObserverFencedFrameBrowserTest() override = default;
PageLoadMetricsObserverFencedFrameBrowserTest(
const PageLoadMetricsObserverFencedFrameBrowserTest&) = delete;
PageLoadMetricsObserverFencedFrameBrowserTest& operator=(
const PageLoadMetricsObserverFencedFrameBrowserTest&) = delete;
content::test::FencedFrameTestHelper& fenced_frame_test_helper() {
return fenced_frame_helper_;
}
private:
content::test::FencedFrameTestHelper fenced_frame_helper_;
};
IN_PROC_BROWSER_TEST_F(PageLoadMetricsObserverPrerenderBrowserTest,
PrerenderDoesNotCountAsPageLoad) {
auto initial_url = embedded_test_server()->GetURL("/empty.html");
ASSERT_TRUE(ui_test_utils::NavigateToURL(browser(), initial_url));
auto entries = test_ukm_recorder()->GetEntriesByName(
ukm::builders::LoadCountsPerTopLevelDocument::kEntryName);
EXPECT_EQ(1u, entries.size());
histogram_tester()->ExpectBucketCount(
"Stability.Experimental.PageLoads",
performance_manager::LoadType::kVisibleTabBase, 1);
// Load a page in the prerender.
GURL prerender_url = embedded_test_server()->GetURL("/title1.html");
const content::FrameTreeNodeId host_id =
prerender_test_helper().AddPrerender(prerender_url);
content::test::PrerenderHostObserver host_observer(*GetWebContents(),
host_id);
EXPECT_FALSE(host_observer.was_activated());
entries = test_ukm_recorder()->GetEntriesByName(
ukm::builders::LoadCountsPerTopLevelDocument::kEntryName);
// Prerendering should not increase the entry size and the bucket count.
EXPECT_EQ(1u, entries.size());
histogram_tester()->ExpectBucketCount(
"Stability.Experimental.PageLoads",
performance_manager::LoadType::kVisibleTabBase, 1);
// Activate the prerender page.
prerender_test_helper().NavigatePrimaryPage(prerender_url);
EXPECT_TRUE(host_observer.was_activated());
entries = test_ukm_recorder()->GetEntriesByName(
ukm::builders::LoadCountsPerTopLevelDocument::kEntryName);
EXPECT_EQ(2u, entries.size());
histogram_tester()->ExpectBucketCount(
"Stability.Experimental.PageLoads",
performance_manager::LoadType::kVisibleTabBase, 2);
}
IN_PROC_BROWSER_TEST_F(PageLoadMetricsObserverFencedFrameBrowserTest,
FencedFrameCountsAsSubFramePageLoad) {
auto initial_url = embedded_test_server()->GetURL("/empty.html");
ASSERT_TRUE(ui_test_utils::NavigateToURL(browser(), initial_url));
auto entries = test_ukm_recorder()->GetEntriesByName(
ukm::builders::LoadCountsPerTopLevelDocument::kEntryName);
EXPECT_EQ(1u, entries.size());
histogram_tester()->ExpectBucketCount(
"Stability.Experimental.PageLoads",
performance_manager::LoadType::kVisibleTabBase, 1);
// Load a fenced frame.
GURL fenced_frame_url =
embedded_test_server()->GetURL("/fenced_frames/title1.html");
content::RenderFrameHost* fenced_frame_host =
fenced_frame_test_helper().CreateFencedFrame(
GetWebContents()->GetPrimaryMainFrame(), fenced_frame_url);
entries = test_ukm_recorder()->GetEntriesByName(
ukm::builders::LoadCountsPerTopLevelDocument::kEntryName);
// Fenced frames should not increase the entry size and the bucket count.
EXPECT_EQ(1u, entries.size());
histogram_tester()->ExpectBucketCount(
"Stability.Experimental.PageLoads",
performance_manager::LoadType::kVisibleTabBase, 1);
histogram_tester()->ExpectBucketCount(
"Stability.Experimental.PageLoads",
performance_manager::LoadType::kVisibleTabSubFrameDifferentDocument, 1);
// Navigate the fenced frame again.
fenced_frame_test_helper().NavigateFrameInFencedFrameTree(
fenced_frame_host,
embedded_test_server()->GetURL("/fenced_frames/title2.html"));
entries = test_ukm_recorder()->GetEntriesByName(
ukm::builders::LoadCountsPerTopLevelDocument::kEntryName);
EXPECT_EQ(1u, entries.size());
histogram_tester()->ExpectBucketCount(
"Stability.Experimental.PageLoads",
performance_manager::LoadType::kVisibleTabBase, 1);
histogram_tester()->ExpectBucketCount(
"Stability.Experimental.PageLoads",
performance_manager::LoadType::kVisibleTabSubFrameDifferentDocument, 2);
}
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