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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/performance_manager/public/resource_attribution/page_context.h"
#include <memory>
#include <optional>
#include "base/memory/weak_ptr.h"
#include "components/performance_manager/public/graph/page_node.h"
#include "components/performance_manager/public/performance_manager.h"
#include "components/performance_manager/resource_attribution/performance_manager_aliases.h"
#include "components/performance_manager/test_support/performance_manager_test_harness.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/navigation_simulator.h"
#include "content/public/test/test_renderer_host.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace resource_attribution {
namespace {
using ResourceAttrPageContextTest =
performance_manager::PerformanceManagerTestHarness;
using ResourceAttrPageContextNoPMTest = content::RenderViewHostTestHarness;
TEST_F(ResourceAttrPageContextTest, PageContexts) {
std::unique_ptr<content::WebContents> web_contents = CreateTestWebContents();
std::optional<PageContext> page_context =
PageContext::FromWebContents(web_contents.get());
ASSERT_TRUE(page_context.has_value());
EXPECT_EQ(web_contents.get(), page_context->GetWebContents());
base::WeakPtr<PageNode> page_node = page_context->GetWeakPageNode();
base::WeakPtr<PageNode> page_node_from_pm =
PerformanceManager::GetPrimaryPageNodeForWebContents(web_contents.get());
ASSERT_TRUE(page_node);
ASSERT_TRUE(page_node_from_pm);
EXPECT_EQ(page_node.get(), page_node_from_pm.get());
EXPECT_EQ(page_node.get(), page_context->GetPageNode());
EXPECT_EQ(page_context.value(), page_node->GetResourceContext());
EXPECT_EQ(page_context.value(), PageContext::FromPageNode(page_node.get()));
EXPECT_EQ(page_context.value(), PageContext::FromWeakPageNode(page_node));
// Navigating the page should not change the PageContext since it corresponds
// to the WebContents, not the document.
content::RenderFrameHost* rfh =
content::NavigationSimulator::NavigateAndCommitFromBrowser(
web_contents.get(), GURL("https://a.com/"));
ASSERT_TRUE(rfh);
std::optional<PageContext> page_context_after_nav =
PageContext::FromWebContents(
content::WebContents::FromRenderFrameHost(rfh));
EXPECT_EQ(page_context, page_context_after_nav);
// Make sure a second page gets a different context.
std::unique_ptr<content::WebContents> web_contents2 = CreateTestWebContents();
std::optional<PageContext> page_context2 =
PageContext::FromWebContents(web_contents2.get());
EXPECT_TRUE(page_context2.has_value());
EXPECT_NE(page_context2, page_context);
web_contents.reset();
EXPECT_EQ(nullptr, page_context->GetWebContents());
EXPECT_FALSE(page_node);
EXPECT_EQ(nullptr, page_context->GetPageNode());
EXPECT_EQ(std::nullopt, PageContext::FromWeakPageNode(page_node));
// The unique id of a PageContext isn't exposed so can't be tested directly.
// But after deleting a page, its PageContexts should still compare equal,
// showing that they're compared by a permanent id, not live data.
EXPECT_EQ(page_context, page_context_after_nav);
EXPECT_NE(page_context, page_context2);
// Make sure PageContext id's aren't reused.
std::unique_ptr<content::WebContents> web_contents3 = CreateTestWebContents();
std::optional<PageContext> page_context3 =
PageContext::FromWebContents(web_contents3.get());
EXPECT_NE(page_context, page_context3);
EXPECT_NE(page_context2, page_context3);
}
TEST_F(ResourceAttrPageContextNoPMTest, PageContextWithoutPM) {
// When PerformanceManager isn't initialized, factory functions should return
// nullopt, not a context that's missing PM info.
std::unique_ptr<content::WebContents> web_contents = CreateTestWebContents();
// Verify that PM didn't see the page.
base::WeakPtr<PageNode> node =
PerformanceManager::GetPrimaryPageNodeForWebContents(web_contents.get());
EXPECT_FALSE(node);
EXPECT_FALSE(PageContext::FromWebContents(web_contents.get()));
}
} // namespace
} // namespace resource_attribution
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