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content / browser / largest_contentful_paint_browsertests.cc [blame]
// Copyright 2022 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/command_line.h"
#include "base/feature_list.h"
#include "base/test/scoped_feature_list.h"
#include "cc/base/features.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/common/content_switches.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/shell/browser/shell.h"
#include "content/test/content_browser_test_utils_internal.h"
#include "net/dns/mock_host_resolver.h"
namespace content {
class LargestContentfulPaintTestBrowserTest
: public ContentBrowserTest,
public ::testing::WithParamInterface<bool> {
protected:
void SetUpOnMainThread() override {
host_resolver()->AddRule("*", "127.0.0.1");
SetupCrossSiteRedirector(embedded_test_server());
ASSERT_TRUE(embedded_test_server()->Start());
ContentBrowserTest::SetUpOnMainThread();
}
WebContentsImpl* web_contents() const {
return static_cast<WebContentsImpl*>(shell()->web_contents());
}
RenderFrameHostImpl* current_frame_host() {
return web_contents()->GetPrimaryFrameTree().root()->current_frame_host();
}
void SetUpCommandLine(base::CommandLine* command_line) override {
command_line->AppendSwitchASCII(switches::kEnableBlinkFeatures,
"ExposeRenderTimeNonTaoDelayedImage");
}
EvalJsResult GetStartTime(std::string type) const {
std::string script = content::JsReplace("getStartTime($1);", type);
return EvalJs(shell(), script);
}
private:
base::test::ScopedFeatureList features_;
};
#if BUILDFLAG(IS_CHROMEOS_LACROS)
#define MAYBE_NonTAOImageLCPRenderTime DISABLED_NonTAOImageLCPRenderTime
#else
#define MAYBE_NonTAOImageLCPRenderTime NonTAOImageLCPRenderTime
#endif
IN_PROC_BROWSER_TEST_F(LargestContentfulPaintTestBrowserTest,
MAYBE_NonTAOImageLCPRenderTime) {
const GURL url1(embedded_test_server()->GetURL(
"a.com", "/performance_timeline/cross-origin-non-tao-image.html"));
EXPECT_TRUE(NavigateToURL(shell(), url1));
double fcpStartTime = GetStartTime("paint").ExtractDouble();
double lcpStartTime =
GetStartTime("largest-contentful-paint").ExtractDouble();
EXPECT_NEAR(lcpStartTime, fcpStartTime, 0.01);
}
} // namespace content