shell/platform/darwin/macos/framework/Source/FlutterTextInputPluginTest.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.

 #import "flutter/shell/platform/darwin/macos/framework/Headers/FlutterViewController.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/FlutterTextInputPlugin.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterTextInputSemanticsObject.h"
 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterViewController_Internal.h"

 #import <OCMock/OCMock.h>
 #import "flutter/testing/testing.h"

 @interface FlutterTextFieldMock : FlutterTextField

 @property(nonatomic) NSString* lastUpdatedString;
 @property(nonatomic) NSRange lastUpdatedSelection;

 @end

 @implementation FlutterTextFieldMock

 - (void)updateString:(NSString*)string withSelection:(NSRange)selection {
   _lastUpdatedString = string;
   _lastUpdatedSelection = selection;
 }

 @end

 @interface FlutterInputPluginTestObjc : NSObject
 - (bool)testEmptyCompositionRange;
 - (bool)testClearClientDuringComposing;
 @end

 @implementation FlutterInputPluginTestObjc

 - (bool)testEmptyCompositionRange {
   id engineMock = OCMClassMock([FlutterEngine class]);
   id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [engineMock binaryMessenger])
       .andReturn(binaryMessengerMock);

   FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                 nibName:@""
                                                                                  bundle:nil];

   FlutterTextInputPlugin* plugin =
       [[FlutterTextInputPlugin alloc] initWithViewController:viewController];

   [plugin handleMethodCall:[FlutterMethodCall
                                methodCallWithMethodName:@"TextInput.setClient"
                                               arguments:@[
                                                 @(1), @{
                                                   @"inputAction" : @"action",
                                                   @"inputType" : @{@"name" : @"inputName"},
                                                 }
                                               ]]
                     result:^(id){
                     }];

   FlutterMethodCall* call = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setEditingState"
                                                               arguments:@{
                                                                 @"text" : @"Text",
                                                                 @"selectionBase" : @(0),
                                                                 @"selectionExtent" : @(0),
                                                                 @"composingBase" : @(-1),
                                                                 @"composingExtent" : @(-1),
                                                               }];

   NSDictionary* expectedState = @{
     @"selectionBase" : @(0),
     @"selectionExtent" : @(0),
     @"selectionAffinity" : @"TextAffinity.upstream",
     @"selectionIsDirectional" : @(NO),
     @"composingBase" : @(-1),
     @"composingExtent" : @(-1),
     @"text" : @"Text",
   };

   NSData* updateCall = [[FlutterJSONMethodCodec sharedInstance]
       encodeMethodCall:[FlutterMethodCall
                            methodCallWithMethodName:@"TextInputClient.updateEditingState"
                                           arguments:@[ @(1), expectedState ]]];

   OCMExpect(  // NOLINT(google-objc-avoid-throwing-exception)
       [binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);

   [plugin handleMethodCall:call
                     result:^(id){
                     }];

   @try {
     OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
         [binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
   } @catch (...) {
     return false;
   }
   return true;
 }

 - (bool)testClearClientDuringComposing {
   // Set up FlutterTextInputPlugin.
   id engineMock = OCMClassMock([FlutterEngine class]);
   id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [engineMock binaryMessenger])
       .andReturn(binaryMessengerMock);
   FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                 nibName:@""
                                                                                  bundle:nil];
   FlutterTextInputPlugin* plugin =
       [[FlutterTextInputPlugin alloc] initWithViewController:viewController];

   // Set input client 1.
   [plugin handleMethodCall:[FlutterMethodCall
                                methodCallWithMethodName:@"TextInput.setClient"
                                               arguments:@[
                                                 @(1), @{
                                                   @"inputAction" : @"action",
                                                   @"inputType" : @{@"name" : @"inputName"},
                                                 }
                                               ]]
                     result:^(id){
                     }];

   // Set editing state with an active composing range.
   [plugin handleMethodCall:[FlutterMethodCall methodCallWithMethodName:@"TextInput.setEditingState"
                                                              arguments:@{
                                                                @"text" : @"Text",
                                                                @"selectionBase" : @(0),
                                                                @"selectionExtent" : @(0),
                                                                @"composingBase" : @(0),
                                                                @"composingExtent" : @(1),
                                                              }]
                     result:^(id){
                     }];

   // Verify composing range is (0, 1).
   NSDictionary* editingState = [plugin editingState];
   EXPECT_EQ([editingState[@"composingBase"] intValue], 0);
   EXPECT_EQ([editingState[@"composingExtent"] intValue], 1);

   // Clear input client.
   [plugin handleMethodCall:[FlutterMethodCall methodCallWithMethodName:@"TextInput.clearClient"
                                                              arguments:@[]]
                     result:^(id){
                     }];

   // Verify composing range is collapsed.
   editingState = [plugin editingState];
   EXPECT_EQ([editingState[@"composingBase"] intValue], [editingState[@"composingExtent"] intValue]);
   return true;
 }

 - (bool)testFirstRectForCharacterRange {
   id engineMock = OCMClassMock([FlutterEngine class]);
   id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [engineMock binaryMessenger])
       .andReturn(binaryMessengerMock);
   FlutterViewController* controllerMock = OCMClassMock([FlutterViewController class]);
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [controllerMock engine])
       .andReturn(engineMock);

   id viewMock = OCMClassMock([NSView class]);
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [viewMock bounds])
       .andReturn(NSMakeRect(0, 0, 200, 200));
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       controllerMock.viewLoaded)
       .andReturn(YES);
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [controllerMock flutterView])
       .andReturn(viewMock);

   id windowMock = OCMClassMock([NSWindow class]);
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [viewMock window])
       .andReturn(windowMock);

   OCMExpect(  // NOLINT(google-objc-avoid-throwing-exception)
       [viewMock convertRect:NSMakeRect(28, 10, 2, 19) toView:nil])
       .andReturn(NSMakeRect(28, 10, 2, 19));

   OCMExpect(  // NOLINT(google-objc-avoid-throwing-exception)
       [windowMock convertRectToScreen:NSMakeRect(28, 10, 2, 19)])
       .andReturn(NSMakeRect(38, 20, 2, 19));

   FlutterTextInputPlugin* plugin =
       [[FlutterTextInputPlugin alloc] initWithViewController:controllerMock];

   FlutterMethodCall* call = [FlutterMethodCall
       methodCallWithMethodName:@"TextInput.setEditableSizeAndTransform"
                      arguments:@{
                        @"height" : @(20.0),
                        @"transform" : @[
                          @(1.0), @(0.0), @(0.0), @(0.0), @(0.0), @(1.0), @(0.0), @(0.0), @(0.0),
                          @(0.0), @(1.0), @(0.0), @(20.0), @(10.0), @(0.0), @(1.0)
                        ],
                        @"width" : @(400.0),
                      }];

   [plugin handleMethodCall:call
                     result:^(id){
                     }];

   call = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setCaretRect"
                                            arguments:@{
                                              @"height" : @(19.0),
                                              @"width" : @(2.0),
                                              @"x" : @(8.0),
                                              @"y" : @(0.0),
                                            }];

   [plugin handleMethodCall:call
                     result:^(id){
                     }];

   NSRect rect = [plugin firstRectForCharacterRange:NSMakeRange(0, 0) actualRange:nullptr];

   @try {
     OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
         [windowMock convertRectToScreen:NSMakeRect(28, 10, 2, 19)]);
   } @catch (...) {
     return false;
   }

   return NSEqualRects(rect, NSMakeRect(38, 20, 2, 19));
 }

 - (bool)testSetEditingStateWithTextEditingDelta {
   id engineMock = OCMClassMock([FlutterEngine class]);
   id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [engineMock binaryMessenger])
       .andReturn(binaryMessengerMock);

   FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                 nibName:@""
                                                                                  bundle:nil];

   FlutterTextInputPlugin* plugin =
       [[FlutterTextInputPlugin alloc] initWithViewController:viewController];

   [plugin handleMethodCall:[FlutterMethodCall
                                methodCallWithMethodName:@"TextInput.setClient"
                                               arguments:@[
                                                 @(1), @{
                                                   @"inputAction" : @"action",
                                                   @"enableDeltaModel" : @"true",
                                                   @"inputType" : @{@"name" : @"inputName"},
                                                 }
                                               ]]
                     result:^(id){
                     }];

   FlutterMethodCall* call = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setEditingState"
                                                               arguments:@{
                                                                 @"text" : @"Text",
                                                                 @"selectionBase" : @(0),
                                                                 @"selectionExtent" : @(0),
                                                                 @"composingBase" : @(-1),
                                                                 @"composingExtent" : @(-1),
                                                               }];

   [plugin handleMethodCall:call
                     result:^(id){
                     }];

   // The setEditingState call is ACKed back to the framework.
   @try {
     OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
         [binaryMessengerMock
             sendOnChannel:@"flutter/textinput"
                   message:[OCMArg checkWithBlock:^BOOL(NSData* callData) {
                     FlutterMethodCall* call =
                         [[FlutterJSONMethodCodec sharedInstance] decodeMethodCall:callData];
                     return [[call method]
                         isEqualToString:@"TextInputClient.updateEditingStateWithDeltas"];
                   }]]);
   } @catch (...) {
     return false;
   }
   return true;
 }

 - (bool)testOperationsThatTriggerDelta {
   id engineMock = OCMClassMock([FlutterEngine class]);
   id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [engineMock binaryMessenger])
       .andReturn(binaryMessengerMock);

   FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                 nibName:@""
                                                                                  bundle:nil];

   FlutterTextInputPlugin* plugin =
       [[FlutterTextInputPlugin alloc] initWithViewController:viewController];

   [plugin handleMethodCall:[FlutterMethodCall
                                methodCallWithMethodName:@"TextInput.setClient"
                                               arguments:@[
                                                 @(1), @{
                                                   @"inputAction" : @"action",
                                                   @"enableDeltaModel" : @"true",
                                                   @"inputType" : @{@"name" : @"inputName"},
                                                 }
                                               ]]
                     result:^(id){
                     }];
   [plugin insertText:@"text to insert"];

   NSDictionary* deltaToFramework = @{
     @"oldText" : @"",
     @"deltaText" : @"text to insert",
     @"deltaStart" : @(0),
     @"deltaEnd" : @(0),
     @"selectionBase" : @(14),
     @"selectionExtent" : @(14),
     @"selectionAffinity" : @"TextAffinity.upstream",
     @"selectionIsDirectional" : @(false),
     @"composingBase" : @(-1),
     @"composingExtent" : @(-1),
   };
   NSDictionary* expectedState = @{
     @"deltas" : @[ deltaToFramework ],
   };

   NSData* updateCall = [[FlutterJSONMethodCodec sharedInstance]
       encodeMethodCall:[FlutterMethodCall
                            methodCallWithMethodName:@"TextInputClient.updateEditingStateWithDeltas"
                                           arguments:@[ @(1), expectedState ]]];

   @try {
     OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
         [binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
   } @catch (...) {
     return false;
   }

   [plugin setMarkedText:@"marked text" selectedRange:NSMakeRange(0, 1)];

   deltaToFramework = @{
     @"oldText" : @"text to insert",
     @"deltaText" : @"marked text",
     @"deltaStart" : @(14),
     @"deltaEnd" : @(25),
     @"selectionBase" : @(25),
     @"selectionExtent" : @(25),
     @"selectionAffinity" : @"TextAffinity.upstream",
     @"selectionIsDirectional" : @(false),
     @"composingBase" : @(14),
     @"composingExtent" : @(25),
   };
   expectedState = @{
     @"deltas" : @[ deltaToFramework ],
   };

   updateCall = [[FlutterJSONMethodCodec sharedInstance]
       encodeMethodCall:[FlutterMethodCall
                            methodCallWithMethodName:@"TextInputClient.updateEditingStateWithDeltas"
                                           arguments:@[ @(1), expectedState ]]];

   @try {
     OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
         [binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
   } @catch (...) {
     return false;
   }

   [plugin unmarkText];

   deltaToFramework = @{
     @"oldText" : @"text to insertmarked text",
     @"deltaText" : @"",
     @"deltaStart" : @(-1),
     @"deltaEnd" : @(-1),
     @"selectionBase" : @(25),
     @"selectionExtent" : @(25),
     @"selectionAffinity" : @"TextAffinity.upstream",
     @"selectionIsDirectional" : @(false),
     @"composingBase" : @(-1),
     @"composingExtent" : @(-1),
   };
   expectedState = @{
     @"deltas" : @[ deltaToFramework ],
   };

   updateCall = [[FlutterJSONMethodCodec sharedInstance]
       encodeMethodCall:[FlutterMethodCall
                            methodCallWithMethodName:@"TextInputClient.updateEditingStateWithDeltas"
                                           arguments:@[ @(1), expectedState ]]];

   @try {
     OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
         [binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
   } @catch (...) {
     return false;
   }
   return true;
 }

 - (bool)testLocalTextAndSelectionUpdateAfterDelta {
   id engineMock = OCMClassMock([FlutterEngine class]);
   id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
   OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
       [engineMock binaryMessenger])
       .andReturn(binaryMessengerMock);

   FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                 nibName:@""
                                                                                  bundle:nil];

   FlutterTextInputPlugin* plugin =
       [[FlutterTextInputPlugin alloc] initWithViewController:viewController];

   [plugin handleMethodCall:[FlutterMethodCall
                                methodCallWithMethodName:@"TextInput.setClient"
                                               arguments:@[
                                                 @(1), @{
                                                   @"inputAction" : @"action",
                                                   @"enableDeltaModel" : @"true",
                                                   @"inputType" : @{@"name" : @"inputName"},
                                                 }
                                               ]]
                     result:^(id){
                     }];
   [plugin insertText:@"text to insert"];

   NSDictionary* deltaToFramework = @{
     @"oldText" : @"",
     @"deltaText" : @"text to insert",
     @"deltaStart" : @(0),
     @"deltaEnd" : @(0),
     @"selectionBase" : @(14),
     @"selectionExtent" : @(14),
     @"selectionAffinity" : @"TextAffinity.upstream",
     @"selectionIsDirectional" : @(false),
     @"composingBase" : @(-1),
     @"composingExtent" : @(-1),
   };
   NSDictionary* expectedState = @{
     @"deltas" : @[ deltaToFramework ],
   };

   NSData* updateCall = [[FlutterJSONMethodCodec sharedInstance]
       encodeMethodCall:[FlutterMethodCall
                            methodCallWithMethodName:@"TextInputClient.updateEditingStateWithDeltas"
                                           arguments:@[ @(1), expectedState ]]];

   @try {
     OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
         [binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
   } @catch (...) {
     return false;
   }

   bool localTextAndSelectionUpdated = [plugin.string isEqualToString:@"text to insert"] &&
                                       NSEqualRanges(plugin.selectedRange, NSMakeRange(14, 0));

   return localTextAndSelectionUpdated;
 }

 @end

 namespace flutter::testing {

 namespace {
 // Allocates and 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(FlutterTextInputPluginTest, TestEmptyCompositionRange) {
   ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testEmptyCompositionRange]);
 }

 TEST(FlutterTextInputPluginTest, TestClearClientDuringComposing) {
   ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testClearClientDuringComposing]);
 }

 TEST(FlutterTextInputPluginTest, TestFirstRectForCharacterRange) {
   ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testFirstRectForCharacterRange]);
 }

 TEST(FlutterTextInputPluginTest, TestSetEditingStateWithTextEditingDelta) {
   ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testSetEditingStateWithTextEditingDelta]);
 }

 TEST(FlutterTextInputPluginTest, TestOperationsThatTriggerDelta) {
   ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testOperationsThatTriggerDelta]);
 }

 TEST(FlutterTextInputPluginTest, TestLocalTextAndSelectionUpdateAfterDelta) {
   ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testLocalTextAndSelectionUpdateAfterDelta]);
 }

 TEST(FlutterTextInputPluginTest, CanWorkWithFlutterTextField) {
   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];
   // Create 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();
   FlutterPlatformNodeDelegateMac delegate(engine, viewController);
   ui::AXTree tree;
   ui::AXNode ax_node(&tree, nullptr, 0, 0);
   ui::AXNodeData node_data;
   node_data.SetValue("initial text");
   ax_node.SetData(node_data);
   delegate.Init(engine.accessibilityBridge, &ax_node);
   FlutterTextPlatformNode text_platform_node(&delegate, viewController);

   FlutterTextFieldMock* mockTextField =
       [[FlutterTextFieldMock alloc] initWithPlatformNode:&text_platform_node
                                              fieldEditor:viewController.textInputPlugin];
   [viewController.view addSubview:mockTextField];
   [mockTextField becomeFirstResponder];

   NSDictionary* arguments = @{
     @"inputAction" : @"action",
     @"inputType" : @{@"name" : @"inputName"},
   };
   FlutterMethodCall* methodCall = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setClient"
                                                                     arguments:@[ @(1), arguments ]];
   FlutterResult result = ^(id result) {
   };
   [viewController.textInputPlugin handleMethodCall:methodCall result:result];

   arguments = @{
     @"text" : @"new text",
     @"selectionBase" : @(1),
     @"selectionExtent" : @(2),
     @"composingBase" : @(-1),
     @"composingExtent" : @(-1),
   };

   methodCall = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setEditingState"
                                                  arguments:arguments];
   [viewController.textInputPlugin handleMethodCall:methodCall result:result];
   EXPECT_EQ([mockTextField.lastUpdatedString isEqualToString:@"new text"], YES);
   EXPECT_EQ(NSEqualRanges(mockTextField.lastUpdatedSelection, NSMakeRange(1, 1)), YES);
 }

 TEST(FlutterTextInputPluginTest, CanNotBecomeResponderIfNoViewController) {
   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];
   // 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();
   FlutterPlatformNodeDelegateMac delegate(engine, viewController);
   ui::AXTree tree;
   ui::AXNode ax_node(&tree, nullptr, 0, 0);
   ui::AXNodeData node_data;
   node_data.SetValue("initial text");
   ax_node.SetData(node_data);
   delegate.Init(engine.accessibilityBridge, &ax_node);
   FlutterTextPlatformNode text_platform_node(&delegate, viewController);

   FlutterTextField* textField = text_platform_node.GetNativeViewAccessible();
   EXPECT_EQ([textField becomeFirstResponder], YES);
   // Removes view controller.
   [engine setViewController:nil];
   FlutterTextPlatformNode text_platform_node_no_controller(&delegate, nil);
   textField = text_platform_node_no_controller.GetNativeViewAccessible();
   EXPECT_EQ([textField becomeFirstResponder], NO);
 }

 }  // 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.

	#import "flutter/shell/platform/darwin/macos/framework/Headers/FlutterViewController.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/FlutterTextInputPlugin.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/FlutterTextInputSemanticsObject.h"
	#import "flutter/shell/platform/darwin/macos/framework/Source/FlutterViewController_Internal.h"

	#import <OCMock/OCMock.h>
	#import "flutter/testing/testing.h"

	@interface FlutterTextFieldMock : FlutterTextField

	@property(nonatomic) NSString* lastUpdatedString;
	@property(nonatomic) NSRange lastUpdatedSelection;

	@end

	@implementation FlutterTextFieldMock

	- (void)updateString:(NSString*)string withSelection:(NSRange)selection {
	_lastUpdatedString = string;
	_lastUpdatedSelection = selection;
	}

	@end

	@interface FlutterInputPluginTestObjc : NSObject
	- (bool)testEmptyCompositionRange;
	- (bool)testClearClientDuringComposing;
	@end

	@implementation FlutterInputPluginTestObjc

	- (bool)testEmptyCompositionRange {
	id engineMock = OCMClassMock([FlutterEngine class]);
	id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[engineMock binaryMessenger])
	.andReturn(binaryMessengerMock);

	FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
	nibName:@""
	bundle:nil];

	FlutterTextInputPlugin* plugin =
	[[FlutterTextInputPlugin alloc] initWithViewController:viewController];

	[plugin handleMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInput.setClient"
	arguments:@[
	@(1), @{
	@"inputAction" : @"action",
	@"inputType" : @{@"name" : @"inputName"},
	}
	]]
	result:^(id){
	}];

	FlutterMethodCall* call = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setEditingState"
	arguments:@{
	@"text" : @"Text",
	@"selectionBase" : @(0),
	@"selectionExtent" : @(0),
	@"composingBase" : @(-1),
	@"composingExtent" : @(-1),
	}];

	NSDictionary* expectedState = @{
	@"selectionBase" : @(0),
	@"selectionExtent" : @(0),
	@"selectionAffinity" : @"TextAffinity.upstream",
	@"selectionIsDirectional" : @(NO),
	@"composingBase" : @(-1),
	@"composingExtent" : @(-1),
	@"text" : @"Text",
	};

	NSData* updateCall = [[FlutterJSONMethodCodec sharedInstance]
	encodeMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInputClient.updateEditingState"
	arguments:@[ @(1), expectedState ]]];

	OCMExpect( // NOLINT(google-objc-avoid-throwing-exception)
	[binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);

	[plugin handleMethodCall:call
	result:^(id){
	}];

	@try {
	OCMVerify( // NOLINT(google-objc-avoid-throwing-exception)
	[binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
	} @catch (...) {
	return false;
	}
	return true;
	}

	- (bool)testClearClientDuringComposing {
	// Set up FlutterTextInputPlugin.
	id engineMock = OCMClassMock([FlutterEngine class]);
	id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[engineMock binaryMessenger])
	.andReturn(binaryMessengerMock);
	FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
	nibName:@""
	bundle:nil];
	FlutterTextInputPlugin* plugin =
	[[FlutterTextInputPlugin alloc] initWithViewController:viewController];

	// Set input client 1.
	[plugin handleMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInput.setClient"
	arguments:@[
	@(1), @{
	@"inputAction" : @"action",
	@"inputType" : @{@"name" : @"inputName"},
	}
	]]
	result:^(id){
	}];

	// Set editing state with an active composing range.
	[plugin handleMethodCall:[FlutterMethodCall methodCallWithMethodName:@"TextInput.setEditingState"
	arguments:@{
	@"text" : @"Text",
	@"selectionBase" : @(0),
	@"selectionExtent" : @(0),
	@"composingBase" : @(0),
	@"composingExtent" : @(1),
	}]
	result:^(id){
	}];

	// Verify composing range is (0, 1).
	NSDictionary* editingState = [plugin editingState];
	EXPECT_EQ([editingState[@"composingBase"] intValue], 0);
	EXPECT_EQ([editingState[@"composingExtent"] intValue], 1);

	// Clear input client.
	[plugin handleMethodCall:[FlutterMethodCall methodCallWithMethodName:@"TextInput.clearClient"
	arguments:@[]]
	result:^(id){
	}];

	// Verify composing range is collapsed.
	editingState = [plugin editingState];
	EXPECT_EQ([editingState[@"composingBase"] intValue], [editingState[@"composingExtent"] intValue]);
	return true;
	}

	- (bool)testFirstRectForCharacterRange {
	id engineMock = OCMClassMock([FlutterEngine class]);
	id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[engineMock binaryMessenger])
	.andReturn(binaryMessengerMock);
	FlutterViewController* controllerMock = OCMClassMock([FlutterViewController class]);
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[controllerMock engine])
	.andReturn(engineMock);

	id viewMock = OCMClassMock([NSView class]);
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[viewMock bounds])
	.andReturn(NSMakeRect(0, 0, 200, 200));
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	controllerMock.viewLoaded)
	.andReturn(YES);
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[controllerMock flutterView])
	.andReturn(viewMock);

	id windowMock = OCMClassMock([NSWindow class]);
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[viewMock window])
	.andReturn(windowMock);

	OCMExpect( // NOLINT(google-objc-avoid-throwing-exception)
	[viewMock convertRect:NSMakeRect(28, 10, 2, 19) toView:nil])
	.andReturn(NSMakeRect(28, 10, 2, 19));

	OCMExpect( // NOLINT(google-objc-avoid-throwing-exception)
	[windowMock convertRectToScreen:NSMakeRect(28, 10, 2, 19)])
	.andReturn(NSMakeRect(38, 20, 2, 19));

	FlutterTextInputPlugin* plugin =
	[[FlutterTextInputPlugin alloc] initWithViewController:controllerMock];

	FlutterMethodCall* call = [FlutterMethodCall
	methodCallWithMethodName:@"TextInput.setEditableSizeAndTransform"
	arguments:@{
	@"height" : @(20.0),
	@"transform" : @[
	@(1.0), @(0.0), @(0.0), @(0.0), @(0.0), @(1.0), @(0.0), @(0.0), @(0.0),
	@(0.0), @(1.0), @(0.0), @(20.0), @(10.0), @(0.0), @(1.0)
	],
	@"width" : @(400.0),
	}];

	[plugin handleMethodCall:call
	result:^(id){
	}];

	call = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setCaretRect"
	arguments:@{
	@"height" : @(19.0),
	@"width" : @(2.0),
	@"x" : @(8.0),
	@"y" : @(0.0),
	}];

	[plugin handleMethodCall:call
	result:^(id){
	}];

	NSRect rect = [plugin firstRectForCharacterRange:NSMakeRange(0, 0) actualRange:nullptr];

	@try {
	OCMVerify( // NOLINT(google-objc-avoid-throwing-exception)
	[windowMock convertRectToScreen:NSMakeRect(28, 10, 2, 19)]);
	} @catch (...) {
	return false;
	}

	return NSEqualRects(rect, NSMakeRect(38, 20, 2, 19));
	}

	- (bool)testSetEditingStateWithTextEditingDelta {
	id engineMock = OCMClassMock([FlutterEngine class]);
	id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[engineMock binaryMessenger])
	.andReturn(binaryMessengerMock);

	FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
	nibName:@""
	bundle:nil];

	FlutterTextInputPlugin* plugin =
	[[FlutterTextInputPlugin alloc] initWithViewController:viewController];

	[plugin handleMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInput.setClient"
	arguments:@[
	@(1), @{
	@"inputAction" : @"action",
	@"enableDeltaModel" : @"true",
	@"inputType" : @{@"name" : @"inputName"},
	}
	]]
	result:^(id){
	}];

	FlutterMethodCall* call = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setEditingState"
	arguments:@{
	@"text" : @"Text",
	@"selectionBase" : @(0),
	@"selectionExtent" : @(0),
	@"composingBase" : @(-1),
	@"composingExtent" : @(-1),
	}];

	[plugin handleMethodCall:call
	result:^(id){
	}];

	// The setEditingState call is ACKed back to the framework.
	@try {
	OCMVerify( // NOLINT(google-objc-avoid-throwing-exception)
	[binaryMessengerMock
	sendOnChannel:@"flutter/textinput"
	message:[OCMArg checkWithBlock:^BOOL(NSData* callData) {
	FlutterMethodCall* call =
	[[FlutterJSONMethodCodec sharedInstance] decodeMethodCall:callData];
	return [[call method]
	isEqualToString:@"TextInputClient.updateEditingStateWithDeltas"];
	}]]);
	} @catch (...) {
	return false;
	}
	return true;
	}

	- (bool)testOperationsThatTriggerDelta {
	id engineMock = OCMClassMock([FlutterEngine class]);
	id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[engineMock binaryMessenger])
	.andReturn(binaryMessengerMock);

	FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
	nibName:@""
	bundle:nil];

	FlutterTextInputPlugin* plugin =
	[[FlutterTextInputPlugin alloc] initWithViewController:viewController];

	[plugin handleMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInput.setClient"
	arguments:@[
	@(1), @{
	@"inputAction" : @"action",
	@"enableDeltaModel" : @"true",
	@"inputType" : @{@"name" : @"inputName"},
	}
	]]
	result:^(id){
	}];
	[plugin insertText:@"text to insert"];

	NSDictionary* deltaToFramework = @{
	@"oldText" : @"",
	@"deltaText" : @"text to insert",
	@"deltaStart" : @(0),
	@"deltaEnd" : @(0),
	@"selectionBase" : @(14),
	@"selectionExtent" : @(14),
	@"selectionAffinity" : @"TextAffinity.upstream",
	@"selectionIsDirectional" : @(false),
	@"composingBase" : @(-1),
	@"composingExtent" : @(-1),
	};
	NSDictionary* expectedState = @{
	@"deltas" : @[ deltaToFramework ],
	};

	NSData* updateCall = [[FlutterJSONMethodCodec sharedInstance]
	encodeMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInputClient.updateEditingStateWithDeltas"
	arguments:@[ @(1), expectedState ]]];

	@try {
	OCMVerify( // NOLINT(google-objc-avoid-throwing-exception)
	[binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
	} @catch (...) {
	return false;
	}

	[plugin setMarkedText:@"marked text" selectedRange:NSMakeRange(0, 1)];

	deltaToFramework = @{
	@"oldText" : @"text to insert",
	@"deltaText" : @"marked text",
	@"deltaStart" : @(14),
	@"deltaEnd" : @(25),
	@"selectionBase" : @(25),
	@"selectionExtent" : @(25),
	@"selectionAffinity" : @"TextAffinity.upstream",
	@"selectionIsDirectional" : @(false),
	@"composingBase" : @(14),
	@"composingExtent" : @(25),
	};
	expectedState = @{
	@"deltas" : @[ deltaToFramework ],
	};

	updateCall = [[FlutterJSONMethodCodec sharedInstance]
	encodeMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInputClient.updateEditingStateWithDeltas"
	arguments:@[ @(1), expectedState ]]];

	@try {
	OCMVerify( // NOLINT(google-objc-avoid-throwing-exception)
	[binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
	} @catch (...) {
	return false;
	}

	[plugin unmarkText];

	deltaToFramework = @{
	@"oldText" : @"text to insertmarked text",
	@"deltaText" : @"",
	@"deltaStart" : @(-1),
	@"deltaEnd" : @(-1),
	@"selectionBase" : @(25),
	@"selectionExtent" : @(25),
	@"selectionAffinity" : @"TextAffinity.upstream",
	@"selectionIsDirectional" : @(false),
	@"composingBase" : @(-1),
	@"composingExtent" : @(-1),
	};
	expectedState = @{
	@"deltas" : @[ deltaToFramework ],
	};

	updateCall = [[FlutterJSONMethodCodec sharedInstance]
	encodeMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInputClient.updateEditingStateWithDeltas"
	arguments:@[ @(1), expectedState ]]];

	@try {
	OCMVerify( // NOLINT(google-objc-avoid-throwing-exception)
	[binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
	} @catch (...) {
	return false;
	}
	return true;
	}

	- (bool)testLocalTextAndSelectionUpdateAfterDelta {
	id engineMock = OCMClassMock([FlutterEngine class]);
	id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
	OCMStub( // NOLINT(google-objc-avoid-throwing-exception)
	[engineMock binaryMessenger])
	.andReturn(binaryMessengerMock);

	FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
	nibName:@""
	bundle:nil];

	FlutterTextInputPlugin* plugin =
	[[FlutterTextInputPlugin alloc] initWithViewController:viewController];

	[plugin handleMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInput.setClient"
	arguments:@[
	@(1), @{
	@"inputAction" : @"action",
	@"enableDeltaModel" : @"true",
	@"inputType" : @{@"name" : @"inputName"},
	}
	]]
	result:^(id){
	}];
	[plugin insertText:@"text to insert"];

	NSDictionary* deltaToFramework = @{
	@"oldText" : @"",
	@"deltaText" : @"text to insert",
	@"deltaStart" : @(0),
	@"deltaEnd" : @(0),
	@"selectionBase" : @(14),
	@"selectionExtent" : @(14),
	@"selectionAffinity" : @"TextAffinity.upstream",
	@"selectionIsDirectional" : @(false),
	@"composingBase" : @(-1),
	@"composingExtent" : @(-1),
	};
	NSDictionary* expectedState = @{
	@"deltas" : @[ deltaToFramework ],
	};

	NSData* updateCall = [[FlutterJSONMethodCodec sharedInstance]
	encodeMethodCall:[FlutterMethodCall
	methodCallWithMethodName:@"TextInputClient.updateEditingStateWithDeltas"
	arguments:@[ @(1), expectedState ]]];

	@try {
	OCMVerify( // NOLINT(google-objc-avoid-throwing-exception)
	[binaryMessengerMock sendOnChannel:@"flutter/textinput" message:updateCall]);
	} @catch (...) {
	return false;
	}

	bool localTextAndSelectionUpdated = [plugin.string isEqualToString:@"text to insert"] &&
	NSEqualRanges(plugin.selectedRange, NSMakeRange(14, 0));

	return localTextAndSelectionUpdated;
	}

	@end

	namespace flutter::testing {

	namespace {
	// Allocates and 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(FlutterTextInputPluginTest, TestEmptyCompositionRange) {
	ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testEmptyCompositionRange]);
	}

	TEST(FlutterTextInputPluginTest, TestClearClientDuringComposing) {
	ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testClearClientDuringComposing]);
	}

	TEST(FlutterTextInputPluginTest, TestFirstRectForCharacterRange) {
	ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testFirstRectForCharacterRange]);
	}

	TEST(FlutterTextInputPluginTest, TestSetEditingStateWithTextEditingDelta) {
	ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testSetEditingStateWithTextEditingDelta]);
	}

	TEST(FlutterTextInputPluginTest, TestOperationsThatTriggerDelta) {
	ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testOperationsThatTriggerDelta]);
	}

	TEST(FlutterTextInputPluginTest, TestLocalTextAndSelectionUpdateAfterDelta) {
	ASSERT_TRUE([[FlutterInputPluginTestObjc alloc] testLocalTextAndSelectionUpdateAfterDelta]);
	}

	TEST(FlutterTextInputPluginTest, CanWorkWithFlutterTextField) {
	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];
	// Create 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();
	FlutterPlatformNodeDelegateMac delegate(engine, viewController);
	ui::AXTree tree;
	ui::AXNode ax_node(&tree, nullptr, 0, 0);
	ui::AXNodeData node_data;
	node_data.SetValue("initial text");
	ax_node.SetData(node_data);
	delegate.Init(engine.accessibilityBridge, &ax_node);
	FlutterTextPlatformNode text_platform_node(&delegate, viewController);

	FlutterTextFieldMock* mockTextField =
	[[FlutterTextFieldMock alloc] initWithPlatformNode:&text_platform_node
	fieldEditor:viewController.textInputPlugin];
	[viewController.view addSubview:mockTextField];
	[mockTextField becomeFirstResponder];

	NSDictionary* arguments = @{
	@"inputAction" : @"action",
	@"inputType" : @{@"name" : @"inputName"},
	};
	FlutterMethodCall* methodCall = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setClient"
	arguments:@[ @(1), arguments ]];
	FlutterResult result = ^(id result) {
	};
	[viewController.textInputPlugin handleMethodCall:methodCall result:result];

	arguments = @{
	@"text" : @"new text",
	@"selectionBase" : @(1),
	@"selectionExtent" : @(2),
	@"composingBase" : @(-1),
	@"composingExtent" : @(-1),
	};

	methodCall = [FlutterMethodCall methodCallWithMethodName:@"TextInput.setEditingState"
	arguments:arguments];
	[viewController.textInputPlugin handleMethodCall:methodCall result:result];
	EXPECT_EQ([mockTextField.lastUpdatedString isEqualToString:@"new text"], YES);
	EXPECT_EQ(NSEqualRanges(mockTextField.lastUpdatedSelection, NSMakeRange(1, 1)), YES);
	}

	TEST(FlutterTextInputPluginTest, CanNotBecomeResponderIfNoViewController) {
	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];
	// 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();
	FlutterPlatformNodeDelegateMac delegate(engine, viewController);
	ui::AXTree tree;
	ui::AXNode ax_node(&tree, nullptr, 0, 0);
	ui::AXNodeData node_data;
	node_data.SetValue("initial text");
	ax_node.SetData(node_data);
	delegate.Init(engine.accessibilityBridge, &ax_node);
	FlutterTextPlatformNode text_platform_node(&delegate, viewController);

	FlutterTextField* textField = text_platform_node.GetNativeViewAccessible();
	EXPECT_EQ([textField becomeFirstResponder], YES);
	// Removes view controller.
	[engine setViewController:nil];
	FlutterTextPlatformNode text_platform_node_no_controller(&delegate, nil);
	textField = text_platform_node_no_controller.GetNativeViewAccessible();
	EXPECT_EQ([textField becomeFirstResponder], NO);
	}

	} // namespace flutter::testing