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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/accessibility/annotations/ax_main_node_annotator.h"
#include "base/test/scoped_feature_list.h"
#include "content/renderer/accessibility/annotations/ax_annotators_manager.h"
#include "content/renderer/accessibility/render_accessibility_impl_test.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "services/screen_ai/screen_ai_service_impl.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "ui/accessibility/accessibility_features.h"
#include "ui/accessibility/ax_tree.h"
using blink::WebAXObject;
using blink::WebDocument;
namespace content {
class MockMainNodeAnnotationService
: public screen_ai::mojom::Screen2xMainContentExtractor {
public:
MockMainNodeAnnotationService() = default;
MockMainNodeAnnotationService(const MockMainNodeAnnotationService&) = delete;
MockMainNodeAnnotationService& operator=(
const MockMainNodeAnnotationService&) = delete;
~MockMainNodeAnnotationService() override = default;
mojo::PendingRemote<screen_ai::mojom::Screen2xMainContentExtractor>
GetRemote() {
mojo::PendingRemote<screen_ai::mojom::Screen2xMainContentExtractor> remote;
receivers_.Add(this, remote.InitWithNewPipeAndPassReceiver());
return remote;
}
void ExtractMainContent(const ::ui::AXTreeUpdate& snapshot,
ExtractMainContentCallback callback) override {}
void ExtractMainNode(const ui::AXTreeUpdate& snapshot,
ExtractMainNodeCallback callback) override {
// For the mock, let any node which contains text be a content node.
for (ui::AXNodeData node : snapshot.nodes) {
if (node.HasStringAttribute(ax::mojom::StringAttribute::kName) &&
node.role == ax::mojom::Role::kStaticText) {
content_nodes_.push_back(node.id);
}
}
ui::AXTree tree(snapshot);
main_ = screen_ai::ScreenAIService::ComputeMainNodeForTesting(
&tree, content_nodes_);
std::move(callback).Run(main_);
}
void IdentifyMainNode(const ui::AXTreeUpdate& snapshot,
IdentifyMainNodeCallback callback) override {}
void SetClientType(screen_ai::mojom::MceClientType client) override {}
// Tests should not modify entries in these lists.
std::vector<ui::AXNodeID> content_nodes_;
ui::AXNodeID main_ = ui::kInvalidAXNodeID;
private:
mojo::ReceiverSet<screen_ai::mojom::Screen2xMainContentExtractor> receivers_;
};
class AXMainNodeAnnotatorTest : public RenderAccessibilityImplTest {
public:
AXMainNodeAnnotatorTest() = default;
AXMainNodeAnnotatorTest(const AXMainNodeAnnotatorTest&) = delete;
AXMainNodeAnnotatorTest& operator=(const AXMainNodeAnnotatorTest&) = delete;
~AXMainNodeAnnotatorTest() override = default;
protected:
void SetUp() override {
scoped_feature_list_.InitAndEnableFeature(features::kMainNodeAnnotations);
RenderAccessibilityImplTest::SetUp();
ui::AXMode mode = ui::kAXModeComplete;
mode.set_mode(ui::AXMode::kAnnotateMainNode, true);
SetMode(mode);
auto annotator =
std::make_unique<AXMainNodeAnnotator>(GetRenderAccessibilityImpl());
annotator->BindAnnotatorForTesting(mock_annotator_service().GetRemote());
GetRenderAccessibilityImpl()
->ax_annotators_manager_for_testing()
->AddAnnotatorForTesting(std::move(annotator));
task_environment_.RunUntilIdle();
}
void TearDown() override {
GetRenderAccessibilityImpl()
->ax_annotators_manager_for_testing()
->ClearAnnotatorsForTesting();
task_environment_.RunUntilIdle();
RenderAccessibilityImplTest::TearDown();
}
MockMainNodeAnnotationService& mock_annotator_service() {
return mock_annotator_service_;
}
void Annotate(const blink::WebDocument& document,
ui::AXTreeUpdate* update,
bool load_complete) {
GetRenderAccessibilityImpl()->ax_annotators_manager_for_testing()->Annotate(
document, update, load_complete);
}
private:
base::test::ScopedFeatureList scoped_feature_list_;
MockMainNodeAnnotationService mock_annotator_service_;
};
TEST_F(AXMainNodeAnnotatorTest, AnnotateMainNode) {
LoadHTMLAndRefreshAccessibilityTree(R"HTML(
<body>
<div>
<div>Heading</div>
<div>Paragraph</div>
<div>Paragraph</div>
</div>
</body>
)HTML");
// Every time we call a method on a Mojo interface, a message is posted to the
// current task queue. We need to ask the queue to drain itself before we
// check test expectations.
task_environment_.RunUntilIdle();
EXPECT_EQ(3u, mock_annotator_service().content_nodes_.size());
EXPECT_NE(ui::kInvalidAXNodeID, mock_annotator_service().main_);
WebDocument document = GetMainFrame()->GetDocument();
WebAXObject root = WebAXObject::FromWebDocument(document);
ASSERT_FALSE(root.IsNull());
// The expected main node is the div which is the parent of the 3 divs with
// text.
WebAXObject expected_main = root.ChildAt(0).ChildAt(0).ChildAt(0);
ASSERT_FALSE(expected_main.IsNull());
for (int i = 0; i < 3; i++) {
ASSERT_EQ(mock_annotator_service().content_nodes_[i],
expected_main.ChildAt(i).ChildAt(0).AxID());
}
// The main node found by the mock annotator should match the id of the
// expected main.
ASSERT_EQ(mock_annotator_service().main_, expected_main.AxID());
}
TEST_F(AXMainNodeAnnotatorTest, DoesNothingIfAuthorProvidedNode) {
LoadHTMLAndRefreshAccessibilityTree(R"HTML(
<body>
<div role="main">
<div>Heading</div>
<div>Paragraph</div>
<div>Paragraph</div>
</div>
</body>
)HTML");
// Expect mock annotator service did not run.
task_environment_.RunUntilIdle();
EXPECT_EQ(0u, mock_annotator_service().content_nodes_.size());
EXPECT_EQ(ui::kInvalidAXNodeID, mock_annotator_service().main_);
}
} // namespace content
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