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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/test_future.h"
#include "components/network_session_configurator/common/network_switches.h"
#include "components/optimization_guide/core/optimization_guide_features.h"
#include "content/public/browser/web_contents.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 "mojo/public/cpp/bindings/receiver_set.h"
#include "net/dns/mock_host_resolver.h"
#include "net/test/embedded_test_server/request_handler_util.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "third_party/blink/public/common/features_generated.h"
#include "third_party/blink/public/mojom/content_extraction/frame_metadata_observer_registry.mojom.h"
#include "ui/display/display_switches.h"
// TODO(gklassen): move this test to chrome/browser/content_extraction/
namespace optimization_guide {
namespace {
// Allow 1px differences from rounding.
#define EXPECT_ALMOST_EQ(a, b) EXPECT_LE(abs(a - b), 1);
base::FilePath GetTestDataDir() {
return base::FilePath{
FILE_PATH_LITERAL("components/test/data/optimization_guide")};
}
class FrameMetadataObserverBrowserTest
: public content::ContentBrowserTest,
public blink::mojom::FrameMetadataObserver {
public:
FrameMetadataObserverBrowserTest() = default;
FrameMetadataObserverBrowserTest(const FrameMetadataObserverBrowserTest&) =
delete;
FrameMetadataObserverBrowserTest& operator=(
const FrameMetadataObserverBrowserTest&) = delete;
~FrameMetadataObserverBrowserTest() override = default;
content::WebContents* web_contents() { return shell()->web_contents(); }
void SetUpOnMainThread() override {
content::ContentBrowserTest::SetUpOnMainThread(); // Call parent setup
// first
host_resolver()->AddRule("*", "127.0.0.1");
https_server_ = std::make_unique<net::EmbeddedTestServer>(
net::EmbeddedTestServer::TYPE_HTTPS);
https_server_->AddDefaultHandlers(GetTestDataDir());
content::SetupCrossSiteRedirector(https_server_.get());
ASSERT_TRUE(https_server_->Start());
}
void SetUpCommandLine(base::CommandLine* command_line) override {
content::ContentBrowserTest::SetUpCommandLine(command_line);
// HTTPS server only serves a valid cert for localhost, so this is needed
// to load pages from other hosts without an error.
command_line->AppendSwitch(switches::kIgnoreCertificateErrors);
command_line->AppendSwitchASCII(switches::kForceDeviceScaleFactor, "1.0");
}
bool LoadPage(GURL url) {
callback_waiter_.Clear();
return content::NavigateToURL(web_contents(), url);
}
bool WaitForRenderFrameReady() {
return content::WaitForRenderFrameReady(
web_contents()->GetPrimaryMainFrame());
}
void AddObserver() {
auto* rfh = web_contents()->GetPrimaryMainFrame();
rfh->GetRemoteInterfaces()->GetInterface(
frame_metadata_observer_registry_.BindNewPipeAndPassReceiver());
mojo::PendingRemote<blink::mojom::FrameMetadataObserver> remote;
frame_metadata_observer_receiver_.Bind(
remote.InitWithNewPipeAndPassReceiver());
frame_metadata_observer_registry_->AddObserver(std::move(remote));
}
// Invoked when the frame metadata changes.
void OnPaidContentMetadataChanged(bool has_paid_content) override {
callback_waiter_.SetValue(has_paid_content);
}
void WaitForCallback() {
ASSERT_TRUE(callback_waiter_.Wait())
<< "Timed out waiting for OnPaidContentMetadataChanged callback";
}
bool hasPaidContent() { return callback_waiter_.Get(); }
net::EmbeddedTestServer* https_server() { return https_server_.get(); }
protected:
// TestFuture that will be signaled when the callback runs.
base::test::TestFuture<bool> callback_waiter_;
private:
std::unique_ptr<net::EmbeddedTestServer> https_server_;
mojo::Remote<blink::mojom::FrameMetadataObserverRegistry>
frame_metadata_observer_registry_;
mojo::Receiver<blink::mojom::FrameMetadataObserver>
frame_metadata_observer_receiver_{this};
};
IN_PROC_BROWSER_TEST_F(FrameMetadataObserverBrowserTest, PaidContent) {
ASSERT_TRUE(LoadPage(https_server()->GetURL("/paid_content.html")));
AddObserver();
WaitForCallback();
EXPECT_TRUE(hasPaidContent());
}
IN_PROC_BROWSER_TEST_F(FrameMetadataObserverBrowserTest, NoPaidContent) {
ASSERT_TRUE(LoadPage(https_server()->GetURL("/simple.html")));
AddObserver();
WaitForCallback();
EXPECT_FALSE(hasPaidContent());
}
IN_PROC_BROWSER_TEST_F(FrameMetadataObserverBrowserTest, LateObserver) {
ASSERT_TRUE(LoadPage(https_server()->GetURL("/paid_content.html")));
// Wait for the page to load before adding the observer.
ASSERT_TRUE(WaitForRenderFrameReady());
AddObserver();
WaitForCallback();
EXPECT_TRUE(hasPaidContent());
}
} // namespace
} // namespace optimization_guide
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