shell/platform/darwin/macos/framework/Source/FlutterPlatformNodeDelegateMacTest.mm - mirrors/engine - Git at Google

 // Copyright 2013 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 #include "flutter/testing/testing.h"

 #import "flutter/shell/platform/darwin/macos/framework/Headers/FlutterEngine.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/AccessibilityBridgeMac.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterDartProject_Internal.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterEngine_Internal.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterPlatformNodeDelegateMac.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterTextInputSemanticsObject.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterViewControllerTestUtils.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterViewController_Internal.h"

 #include "flutter/shell/platform/common/accessibility_bridge.h"
 #include "flutter/shell/platform/embedder/test_utils/proc_table_replacement.h"
 #include "flutter/third_party/accessibility/ax/ax_action_data.h"

 namespace flutter::testing {

 namespace {
 // Returns an engine configured for the text fixture resource configuration.
 FlutterEngine* CreateTestEngine() {
   NSString* fixtures = @(testing::GetFixturesPath());
   FlutterDartProject* project = [[FlutterDartProject alloc]
       initWithAssetsPath:fixtures
              ICUDataPath:[fixtures stringByAppendingString:@"/icudtl.dat"]];
   return [[FlutterEngine alloc] initWithName:@"test" project:project allowHeadlessExecution:true];
 }
 }  // namespace

 TEST(FlutterPlatformNodeDelegateMac, Basics) {
   FlutterEngine* engine = CreateTestEngine();
   engine.semanticsEnabled = YES;
   auto bridge = engine.accessibilityBridge.lock();
   // Initialize ax node data.
   FlutterSemanticsNode root;
   root.id = 0;
   root.flags = static_cast<FlutterSemanticsFlag>(0);
   ;
   root.actions = static_cast<FlutterSemanticsAction>(0);
   root.text_selection_base = -1;
   root.text_selection_extent = -1;
   root.label = "accessibility";
   root.hint = "";
   root.value = "";
   root.increased_value = "";
   root.decreased_value = "";
   root.tooltip = "";
   root.child_count = 0;
   root.custom_accessibility_actions_count = 0;
   bridge->AddFlutterSemanticsNodeUpdate(&root);

   bridge->CommitUpdates();

   auto root_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(0).lock();
   // Verify the accessibility attribute matches.
   NSAccessibilityElement* native_accessibility =
       root_platform_node_delegate->GetNativeViewAccessible();
   std::string value = [native_accessibility.accessibilityValue UTF8String];
   EXPECT_TRUE(value == "accessibility");
   EXPECT_EQ(native_accessibility.accessibilityRole, NSAccessibilityStaticTextRole);
   EXPECT_EQ([native_accessibility.accessibilityChildren count], 0u);
   [engine shutDownEngine];
 }

 TEST(FlutterPlatformNodeDelegateMac, SelectableTextHasCorrectSemantics) {
   FlutterEngine* engine = CreateTestEngine();
   engine.semanticsEnabled = YES;
   auto bridge = engine.accessibilityBridge.lock();
   // Initialize ax node data.
   FlutterSemanticsNode root;
   root.id = 0;
   root.flags =
       static_cast<FlutterSemanticsFlag>(FlutterSemanticsFlag::kFlutterSemanticsFlagIsTextField |
                                         FlutterSemanticsFlag::kFlutterSemanticsFlagIsReadOnly);
   root.actions = static_cast<FlutterSemanticsAction>(0);
   root.text_selection_base = 1;
   root.text_selection_extent = 3;
   root.label = "";
   root.hint = "";
   // Selectable text store its text in value
   root.value = "selectable text";
   root.increased_value = "";
   root.decreased_value = "";
   root.tooltip = "";
   root.child_count = 0;
   root.custom_accessibility_actions_count = 0;
   bridge->AddFlutterSemanticsNodeUpdate(&root);

   bridge->CommitUpdates();

   auto root_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(0).lock();
   // Verify the accessibility attribute matches.
   NSAccessibilityElement* native_accessibility =
       root_platform_node_delegate->GetNativeViewAccessible();
   std::string value = [native_accessibility.accessibilityValue UTF8String];
   EXPECT_EQ(value, "selectable text");
   EXPECT_EQ(native_accessibility.accessibilityRole, NSAccessibilityStaticTextRole);
   EXPECT_EQ([native_accessibility.accessibilityChildren count], 0u);
   NSRange selection = native_accessibility.accessibilitySelectedTextRange;
   EXPECT_EQ(selection.location, 1u);
   EXPECT_EQ(selection.length, 2u);
   std::string selected_text = [native_accessibility.accessibilitySelectedText UTF8String];
   EXPECT_EQ(selected_text, "el");
 }

 TEST(FlutterPlatformNodeDelegateMac, SelectableTextWithoutSelectionReturnZeroRange) {
   FlutterEngine* engine = CreateTestEngine();
   engine.semanticsEnabled = YES;
   auto bridge = engine.accessibilityBridge.lock();
   // Initialize ax node data.
   FlutterSemanticsNode root;
   root.id = 0;
   root.flags =
       static_cast<FlutterSemanticsFlag>(FlutterSemanticsFlag::kFlutterSemanticsFlagIsTextField |
                                         FlutterSemanticsFlag::kFlutterSemanticsFlagIsReadOnly);
   root.actions = static_cast<FlutterSemanticsAction>(0);
   root.text_selection_base = -1;
   root.text_selection_extent = -1;
   root.label = "";
   root.hint = "";
   // Selectable text store its text in value
   root.value = "selectable text";
   root.increased_value = "";
   root.decreased_value = "";
   root.tooltip = "";
   root.child_count = 0;
   root.custom_accessibility_actions_count = 0;
   bridge->AddFlutterSemanticsNodeUpdate(&root);

   bridge->CommitUpdates();

   auto root_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(0).lock();
   // Verify the accessibility attribute matches.
   NSAccessibilityElement* native_accessibility =
       root_platform_node_delegate->GetNativeViewAccessible();
   NSRange selection = native_accessibility.accessibilitySelectedTextRange;
   EXPECT_TRUE(selection.location == NSNotFound);
   EXPECT_EQ(selection.length, 0u);
 }

 // MOCK_ENGINE_PROC is leaky by design
 // NOLINTBEGIN(clang-analyzer-core.StackAddressEscape)

 TEST(FlutterPlatformNodeDelegateMac, CanPerformAction) {
   FlutterEngine* engine = CreateTestEngine();

   // Set up view controller.
   NSString* fixtures = @(testing::GetFixturesPath());
   FlutterDartProject* project = [[FlutterDartProject alloc]
       initWithAssetsPath:fixtures
              ICUDataPath:[fixtures stringByAppendingString:@"/icudtl.dat"]];
   FlutterViewController* viewController = [[FlutterViewController alloc] initWithProject:project];
   [engine setViewController:viewController];

   // Attach the view to a NSWindow.
   NSWindow* window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 800, 600)
                                                  styleMask:NSBorderlessWindowMask
                                                    backing:NSBackingStoreBuffered
                                                      defer:NO];
   window.contentView = viewController.view;

   engine.semanticsEnabled = YES;
   auto bridge = engine.accessibilityBridge.lock();
   // Initialize ax node data.
   FlutterSemanticsNode root;
   root.id = 0;
   root.label = "root";
   root.hint = "";
   root.value = "";
   root.increased_value = "";
   root.decreased_value = "";
   root.tooltip = "";
   root.child_count = 1;
   int32_t children[] = {1};
   root.children_in_traversal_order = children;
   root.custom_accessibility_actions_count = 0;
   bridge->AddFlutterSemanticsNodeUpdate(&root);

   FlutterSemanticsNode child1;
   child1.id = 1;
   child1.label = "child 1";
   child1.hint = "";
   child1.value = "";
   child1.increased_value = "";
   child1.decreased_value = "";
   child1.tooltip = "";
   child1.child_count = 0;
   child1.custom_accessibility_actions_count = 0;
   bridge->AddFlutterSemanticsNodeUpdate(&child1);

   bridge->CommitUpdates();

   auto root_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(1).lock();

   // Set up embedder API mock.
   FlutterSemanticsAction called_action;
   uint64_t called_id;

   engine.embedderAPI.DispatchSemanticsAction = MOCK_ENGINE_PROC(
       DispatchSemanticsAction,
       ([&called_id, &called_action](auto engine, uint64_t id, FlutterSemanticsAction action,
                                     const uint8_t* data, size_t data_length) {
         called_id = id;
         called_action = action;
         return kSuccess;
       }));

   // Performs an AXAction.
   ui::AXActionData action_data;
   action_data.action = ax::mojom::Action::kDoDefault;
   root_platform_node_delegate->AccessibilityPerformAction(action_data);

   EXPECT_EQ(called_action, FlutterSemanticsAction::kFlutterSemanticsActionTap);
   EXPECT_EQ(called_id, 1u);

   [engine setViewController:nil];
   [engine shutDownEngine];
 }

 // NOLINTEND(clang-analyzer-core.StackAddressEscape)

 TEST(FlutterPlatformNodeDelegateMac, TextFieldUsesFlutterTextField) {
   FlutterEngine* engine = CreateTestEngine();
   NSString* fixtures = @(testing::GetFixturesPath());
   FlutterDartProject* project = [[FlutterDartProject alloc]
       initWithAssetsPath:fixtures
              ICUDataPath:[fixtures stringByAppendingString:@"/icudtl.dat"]];
   FlutterViewController* viewController = [[FlutterViewController alloc] initWithProject:project];
   [viewController loadView];
   [engine setViewController:viewController];

   // Unit test localization is unnecessary.
   // NOLINTNEXTLINE(clang-analyzer-optin.osx.cocoa.localizability.NonLocalizedStringChecker)
   viewController.textInputPlugin.string = @"textfield";
   // Creates a NSWindow so that the native text field can become first responder.
   NSWindow* window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 800, 600)
                                                  styleMask:NSBorderlessWindowMask
                                                    backing:NSBackingStoreBuffered
                                                      defer:NO];
   window.contentView = viewController.view;
   engine.semanticsEnabled = YES;

   auto bridge = engine.accessibilityBridge.lock();
   // Initialize ax node data.
   FlutterSemanticsNode root;
   root.id = 0;
   root.flags = static_cast<FlutterSemanticsFlag>(0);
   root.actions = static_cast<FlutterSemanticsAction>(0);
   root.label = "root";
   root.hint = "";
   root.value = "";
   root.increased_value = "";
   root.decreased_value = "";
   root.tooltip = "";
   root.child_count = 1;
   int32_t children[] = {1};
   root.children_in_traversal_order = children;
   root.custom_accessibility_actions_count = 0;
   root.rect = {0, 0, 100, 100};  // LTRB
   root.transform = {1, 0, 0, 0, 1, 0, 0, 0, 1};
   bridge->AddFlutterSemanticsNodeUpdate(&root);

   double rectSize = 50;
   double transformFactor = 0.5;

   FlutterSemanticsNode child1;
   child1.id = 1;
   child1.flags = FlutterSemanticsFlag::kFlutterSemanticsFlagIsTextField;
   child1.actions = static_cast<FlutterSemanticsAction>(0);
   child1.label = "";
   child1.hint = "";
   child1.value = "textfield";
   child1.increased_value = "";
   child1.decreased_value = "";
   child1.tooltip = "";
   child1.text_selection_base = -1;
   child1.text_selection_extent = -1;
   child1.child_count = 0;
   child1.custom_accessibility_actions_count = 0;
   child1.rect = {0, 0, rectSize, rectSize};  // LTRB
   child1.transform = {transformFactor, 0, 0, 0, transformFactor, 0, 0, 0, 1};
   bridge->AddFlutterSemanticsNodeUpdate(&child1);

   bridge->CommitUpdates();

   auto child_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(1).lock();
   // Verify the accessibility attribute matches.
   id native_accessibility = child_platform_node_delegate->GetNativeViewAccessible();
   EXPECT_EQ([native_accessibility isKindOfClass:[FlutterTextField class]], YES);
   FlutterTextField* native_text_field = (FlutterTextField*)native_accessibility;

   NSView* view = viewController.flutterView;
   CGRect scaledBounds = [view convertRectToBacking:view.bounds];
   CGSize scaledSize = scaledBounds.size;
   double pixelRatio = view.bounds.size.width == 0 ? 1 : scaledSize.width / view.bounds.size.width;

   double expectedFrameSize = rectSize * transformFactor / pixelRatio;
   EXPECT_EQ(NSEqualRects(native_text_field.frame, NSMakeRect(0, 600 - expectedFrameSize,
                                                              expectedFrameSize, expectedFrameSize)),
             YES);

   [native_text_field startEditing];
   EXPECT_EQ([native_text_field.stringValue isEqualToString:@"textfield"], YES);
 }

 }  // namespace flutter::testing
	// Copyright 2013 The Flutter Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.
	#include "flutter/testing/testing.h"

	#import "flutter/shell/platform/darwin/macos/framework/Headers/FlutterEngine.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/AccessibilityBridgeMac.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/FlutterDartProject_Internal.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/FlutterEngine_Internal.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/FlutterPlatformNodeDelegateMac.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/FlutterTextInputSemanticsObject.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/FlutterViewControllerTestUtils.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/FlutterViewController_Internal.h"

	#include "flutter/shell/platform/common/accessibility_bridge.h"
	#include "flutter/shell/platform/embedder/test_utils/proc_table_replacement.h"
	#include "flutter/third_party/accessibility/ax/ax_action_data.h"

	namespace flutter::testing {

	namespace {
	// Returns an engine configured for the text fixture resource configuration.
	FlutterEngine* CreateTestEngine() {
	NSString* fixtures = @(testing::GetFixturesPath());
	FlutterDartProject* project = [[FlutterDartProject alloc]
	initWithAssetsPath:fixtures
	ICUDataPath:[fixtures stringByAppendingString:@"/icudtl.dat"]];
	return [[FlutterEngine alloc] initWithName:@"test" project:project allowHeadlessExecution:true];
	}
	} // namespace

	TEST(FlutterPlatformNodeDelegateMac, Basics) {
	FlutterEngine* engine = CreateTestEngine();
	engine.semanticsEnabled = YES;
	auto bridge = engine.accessibilityBridge.lock();
	// Initialize ax node data.
	FlutterSemanticsNode root;
	root.id = 0;
	root.flags = static_cast<FlutterSemanticsFlag>(0);
	;
	root.actions = static_cast<FlutterSemanticsAction>(0);
	root.text_selection_base = -1;
	root.text_selection_extent = -1;
	root.label = "accessibility";
	root.hint = "";
	root.value = "";
	root.increased_value = "";
	root.decreased_value = "";
	root.tooltip = "";
	root.child_count = 0;
	root.custom_accessibility_actions_count = 0;
	bridge->AddFlutterSemanticsNodeUpdate(&root);

	bridge->CommitUpdates();

	auto root_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(0).lock();
	// Verify the accessibility attribute matches.
	NSAccessibilityElement* native_accessibility =
	root_platform_node_delegate->GetNativeViewAccessible();
	std::string value = [native_accessibility.accessibilityValue UTF8String];
	EXPECT_TRUE(value == "accessibility");
	EXPECT_EQ(native_accessibility.accessibilityRole, NSAccessibilityStaticTextRole);
	EXPECT_EQ([native_accessibility.accessibilityChildren count], 0u);
	[engine shutDownEngine];
	}

	TEST(FlutterPlatformNodeDelegateMac, SelectableTextHasCorrectSemantics) {
	FlutterEngine* engine = CreateTestEngine();
	engine.semanticsEnabled = YES;
	auto bridge = engine.accessibilityBridge.lock();
	// Initialize ax node data.
	FlutterSemanticsNode root;
	root.id = 0;
	root.flags =
	static_cast<FlutterSemanticsFlag>(FlutterSemanticsFlag::kFlutterSemanticsFlagIsTextField \|
	FlutterSemanticsFlag::kFlutterSemanticsFlagIsReadOnly);
	root.actions = static_cast<FlutterSemanticsAction>(0);
	root.text_selection_base = 1;
	root.text_selection_extent = 3;
	root.label = "";
	root.hint = "";
	// Selectable text store its text in value
	root.value = "selectable text";
	root.increased_value = "";
	root.decreased_value = "";
	root.tooltip = "";
	root.child_count = 0;
	root.custom_accessibility_actions_count = 0;
	bridge->AddFlutterSemanticsNodeUpdate(&root);

	bridge->CommitUpdates();

	auto root_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(0).lock();
	// Verify the accessibility attribute matches.
	NSAccessibilityElement* native_accessibility =
	root_platform_node_delegate->GetNativeViewAccessible();
	std::string value = [native_accessibility.accessibilityValue UTF8String];
	EXPECT_EQ(value, "selectable text");
	EXPECT_EQ(native_accessibility.accessibilityRole, NSAccessibilityStaticTextRole);
	EXPECT_EQ([native_accessibility.accessibilityChildren count], 0u);
	NSRange selection = native_accessibility.accessibilitySelectedTextRange;
	EXPECT_EQ(selection.location, 1u);
	EXPECT_EQ(selection.length, 2u);
	std::string selected_text = [native_accessibility.accessibilitySelectedText UTF8String];
	EXPECT_EQ(selected_text, "el");
	}

	TEST(FlutterPlatformNodeDelegateMac, SelectableTextWithoutSelectionReturnZeroRange) {
	FlutterEngine* engine = CreateTestEngine();
	engine.semanticsEnabled = YES;
	auto bridge = engine.accessibilityBridge.lock();
	// Initialize ax node data.
	FlutterSemanticsNode root;
	root.id = 0;
	root.flags =
	static_cast<FlutterSemanticsFlag>(FlutterSemanticsFlag::kFlutterSemanticsFlagIsTextField \|
	FlutterSemanticsFlag::kFlutterSemanticsFlagIsReadOnly);
	root.actions = static_cast<FlutterSemanticsAction>(0);
	root.text_selection_base = -1;
	root.text_selection_extent = -1;
	root.label = "";
	root.hint = "";
	// Selectable text store its text in value
	root.value = "selectable text";
	root.increased_value = "";
	root.decreased_value = "";
	root.tooltip = "";
	root.child_count = 0;
	root.custom_accessibility_actions_count = 0;
	bridge->AddFlutterSemanticsNodeUpdate(&root);

	bridge->CommitUpdates();

	auto root_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(0).lock();
	// Verify the accessibility attribute matches.
	NSAccessibilityElement* native_accessibility =
	root_platform_node_delegate->GetNativeViewAccessible();
	NSRange selection = native_accessibility.accessibilitySelectedTextRange;
	EXPECT_TRUE(selection.location == NSNotFound);
	EXPECT_EQ(selection.length, 0u);
	}

	// MOCK_ENGINE_PROC is leaky by design
	// NOLINTBEGIN(clang-analyzer-core.StackAddressEscape)

	TEST(FlutterPlatformNodeDelegateMac, CanPerformAction) {
	FlutterEngine* engine = CreateTestEngine();

	// Set up view controller.
	NSString* fixtures = @(testing::GetFixturesPath());
	FlutterDartProject* project = [[FlutterDartProject alloc]
	initWithAssetsPath:fixtures
	ICUDataPath:[fixtures stringByAppendingString:@"/icudtl.dat"]];
	FlutterViewController* viewController = [[FlutterViewController alloc] initWithProject:project];
	[engine setViewController:viewController];

	// Attach the view to a NSWindow.
	NSWindow* window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 800, 600)
	styleMask:NSBorderlessWindowMask
	backing:NSBackingStoreBuffered
	defer:NO];
	window.contentView = viewController.view;

	engine.semanticsEnabled = YES;
	auto bridge = engine.accessibilityBridge.lock();
	// Initialize ax node data.
	FlutterSemanticsNode root;
	root.id = 0;
	root.label = "root";
	root.hint = "";
	root.value = "";
	root.increased_value = "";
	root.decreased_value = "";
	root.tooltip = "";
	root.child_count = 1;
	int32_t children[] = {1};
	root.children_in_traversal_order = children;
	root.custom_accessibility_actions_count = 0;
	bridge->AddFlutterSemanticsNodeUpdate(&root);

	FlutterSemanticsNode child1;
	child1.id = 1;
	child1.label = "child 1";
	child1.hint = "";
	child1.value = "";
	child1.increased_value = "";
	child1.decreased_value = "";
	child1.tooltip = "";
	child1.child_count = 0;
	child1.custom_accessibility_actions_count = 0;
	bridge->AddFlutterSemanticsNodeUpdate(&child1);

	bridge->CommitUpdates();

	auto root_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(1).lock();

	// Set up embedder API mock.
	FlutterSemanticsAction called_action;
	uint64_t called_id;

	engine.embedderAPI.DispatchSemanticsAction = MOCK_ENGINE_PROC(
	DispatchSemanticsAction,
	([&called_id, &called_action](auto engine, uint64_t id, FlutterSemanticsAction action,
	const uint8_t* data, size_t data_length) {
	called_id = id;
	called_action = action;
	return kSuccess;
	}));

	// Performs an AXAction.
	ui::AXActionData action_data;
	action_data.action = ax::mojom::Action::kDoDefault;
	root_platform_node_delegate->AccessibilityPerformAction(action_data);

	EXPECT_EQ(called_action, FlutterSemanticsAction::kFlutterSemanticsActionTap);
	EXPECT_EQ(called_id, 1u);

	[engine setViewController:nil];
	[engine shutDownEngine];
	}

	// NOLINTEND(clang-analyzer-core.StackAddressEscape)

	TEST(FlutterPlatformNodeDelegateMac, TextFieldUsesFlutterTextField) {
	FlutterEngine* engine = CreateTestEngine();
	NSString* fixtures = @(testing::GetFixturesPath());
	FlutterDartProject* project = [[FlutterDartProject alloc]
	initWithAssetsPath:fixtures
	ICUDataPath:[fixtures stringByAppendingString:@"/icudtl.dat"]];
	FlutterViewController* viewController = [[FlutterViewController alloc] initWithProject:project];
	[viewController loadView];
	[engine setViewController:viewController];

	// Unit test localization is unnecessary.
	// NOLINTNEXTLINE(clang-analyzer-optin.osx.cocoa.localizability.NonLocalizedStringChecker)
	viewController.textInputPlugin.string = @"textfield";
	// Creates a NSWindow so that the native text field can become first responder.
	NSWindow* window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 800, 600)
	styleMask:NSBorderlessWindowMask
	backing:NSBackingStoreBuffered
	defer:NO];
	window.contentView = viewController.view;
	engine.semanticsEnabled = YES;

	auto bridge = engine.accessibilityBridge.lock();
	// Initialize ax node data.
	FlutterSemanticsNode root;
	root.id = 0;
	root.flags = static_cast<FlutterSemanticsFlag>(0);
	root.actions = static_cast<FlutterSemanticsAction>(0);
	root.label = "root";
	root.hint = "";
	root.value = "";
	root.increased_value = "";
	root.decreased_value = "";
	root.tooltip = "";
	root.child_count = 1;
	int32_t children[] = {1};
	root.children_in_traversal_order = children;
	root.custom_accessibility_actions_count = 0;
	root.rect = {0, 0, 100, 100}; // LTRB
	root.transform = {1, 0, 0, 0, 1, 0, 0, 0, 1};
	bridge->AddFlutterSemanticsNodeUpdate(&root);

	double rectSize = 50;
	double transformFactor = 0.5;

	FlutterSemanticsNode child1;
	child1.id = 1;
	child1.flags = FlutterSemanticsFlag::kFlutterSemanticsFlagIsTextField;
	child1.actions = static_cast<FlutterSemanticsAction>(0);
	child1.label = "";
	child1.hint = "";
	child1.value = "textfield";
	child1.increased_value = "";
	child1.decreased_value = "";
	child1.tooltip = "";
	child1.text_selection_base = -1;
	child1.text_selection_extent = -1;
	child1.child_count = 0;
	child1.custom_accessibility_actions_count = 0;
	child1.rect = {0, 0, rectSize, rectSize}; // LTRB
	child1.transform = {transformFactor, 0, 0, 0, transformFactor, 0, 0, 0, 1};
	bridge->AddFlutterSemanticsNodeUpdate(&child1);

	bridge->CommitUpdates();

	auto child_platform_node_delegate = bridge->GetFlutterPlatformNodeDelegateFromID(1).lock();
	// Verify the accessibility attribute matches.
	id native_accessibility = child_platform_node_delegate->GetNativeViewAccessible();
	EXPECT_EQ([native_accessibility isKindOfClass:[FlutterTextField class]], YES);
	FlutterTextField* native_text_field = (FlutterTextField*)native_accessibility;

	NSView* view = viewController.flutterView;
	CGRect scaledBounds = [view convertRectToBacking:view.bounds];
	CGSize scaledSize = scaledBounds.size;
	double pixelRatio = view.bounds.size.width == 0 ? 1 : scaledSize.width / view.bounds.size.width;

	double expectedFrameSize = rectSize * transformFactor / pixelRatio;
	EXPECT_EQ(NSEqualRects(native_text_field.frame, NSMakeRect(0, 600 - expectedFrameSize,
	expectedFrameSize, expectedFrameSize)),
	YES);

	[native_text_field startEditing];
	EXPECT_EQ([native_text_field.stringValue isEqualToString:@"textfield"], YES);
	}

	} // namespace flutter::testing