FlutterViewControllerTestObjC Class Reference

Inheritance diagram for FlutterViewControllerTestObjC:

Instance Methods
(bool)	- testKeyEventsAreSentToFramework:
(bool)	- testKeyEventsArePropagatedIfNotHandled:
(bool)	- testKeyEventsAreNotPropagatedIfHandled:
(bool)	- testCtrlTabKeyEventIsPropagated:
(bool)	- testKeyEquivalentIsPassedToTextInputPlugin:
(bool)	- testFlagsChangedEventsArePropagatedIfNotHandled:
(bool)	- testKeyboardIsRestartedOnEngineRestart:
(bool)	- testTrackpadGesturesAreSentToFramework:
(bool)	- mouseAndGestureEventsAreHandledSeparately:
(bool)	- testMouseDownUpEventsSentToNextResponder:
(bool)	- testModifierKeysAreSynthesizedOnMouseMove:
(bool)	- testViewWillAppearCalledMultipleTimes:
(bool)	- testFlutterViewIsConfigured:
(bool)	- testLookupKeyAssets
(bool)	- testLookupKeyAssetsWithPackage
(bool)	- testViewControllerIsReleased

Class Methods
(void)	+ respondFalseForSendEvent:callback:userData:

Detailed Description

Definition at line 95 of file FlutterViewControllerTest.mm.

Method Documentation

mouseAndGestureEventsAreHandledSeparately:

- (bool) mouseAndGestureEventsAreHandledSeparately:

(id)

engineMock

Definition at line 1014 of file FlutterViewControllerTest.mm.

                                                 :(id)engineMock {
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  [viewController loadView];
 
  // Test for pan events.
  // Start gesture.
  CGEventRef cgEventStart = CGEventCreateScrollWheelEvent(NULL, kCGScrollEventUnitPixel, 1, 0);
  CGEventSetType(cgEventStart, kCGEventScrollWheel);
  CGEventSetIntegerValueField(cgEventStart, kCGScrollWheelEventScrollPhase, kCGScrollPhaseBegan);
  CGEventSetIntegerValueField(cgEventStart, kCGScrollWheelEventIsContinuous, 1);
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventStart]];
  CFRelease(cgEventStart);
 
  CGEventRef cgEventUpdate = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventUpdate, kCGScrollWheelEventScrollPhase, kCGScrollPhaseChanged);
  CGEventSetIntegerValueField(cgEventUpdate, kCGScrollWheelEventDeltaAxis2, 1);  // pan_x
  CGEventSetIntegerValueField(cgEventUpdate, kCGScrollWheelEventDeltaAxis1, 2);  // pan_y
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventUpdate]];
  CFRelease(cgEventUpdate);
 
  NSEvent* mouseEvent = flutter::testing::CreateMouseEvent(0x00);
  [viewController mouseEntered:mouseEvent];
  [viewController mouseExited:mouseEvent];
 
  // End gesture.
  CGEventRef cgEventEnd = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventEnd, kCGScrollWheelEventScrollPhase, kCGScrollPhaseEnded);
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventEnd]];
  CFRelease(cgEventEnd);
 
  return true;
}

respondFalseForSendEvent:callback:userData:

+ (void) respondFalseForSendEvent:		(const FlutterKeyEvent&)	event
callback:		(nullable FlutterKeyEventCallback)	callback
userData:		(nullable void*)	userData

Definition at line 704 of file FlutterViewControllerTest.mm.

                                :(const FlutterKeyEvent&)event
                        callback:(nullable FlutterKeyEventCallback)callback
                        userData:(nullable void*)userData {
  if (callback != nullptr) {
    callback(false, userData);
  }
}

testCtrlTabKeyEventIsPropagated:

- (bool) testCtrlTabKeyEventIsPropagated:

(id)

mockEngine

Definition at line 375 of file FlutterViewControllerTest.mm.

                                       :(id)engineMock {
  __block bool called = false;
  __block FlutterKeyEvent last_event;
  OCMStub([[engineMock ignoringNonObjectArgs] sendKeyEvent:FlutterKeyEvent {}
                                                  callback:nil
                                                  userData:nil])
      .andDo((^(NSInvocation* invocation) {
        FlutterKeyEvent* event;
        [invocation getArgument:&event atIndex:2];
        called = true;
        last_event = *event;
      }));
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  // Ctrl+tab
  NSEvent* event = [NSEvent keyEventWithType:NSEventTypeKeyDown
                                    location:NSZeroPoint
                               modifierFlags:0x40101
                                   timestamp:0
                                windowNumber:0
                                     context:nil
                                  characters:@""
                 charactersIgnoringModifiers:@""
                                   isARepeat:NO
                                     keyCode:48];
  const uint64_t kPhysicalKeyTab = 0x7002b;
 
  [viewController viewWillAppear];  // Initializes the event channel.
  // Creates a NSWindow so that FlutterView view can be first responder.
  NSWindow* window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 800, 600)
                                                 styleMask:NSBorderlessWindowMask
                                                   backing:NSBackingStoreBuffered
                                                     defer:NO];
  window.contentView = viewController.view;
  [window makeFirstResponder:viewController.flutterView];
  [viewController.view performKeyEquivalent:event];
 
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.type, kFlutterKeyEventTypeDown);
  EXPECT_EQ(last_event.physical, kPhysicalKeyTab);
  return true;
}

testFlagsChangedEventsArePropagatedIfNotHandled:

- (bool) testFlagsChangedEventsArePropagatedIfNotHandled:

(id)

mockEngine

Definition at line 543 of file FlutterViewControllerTest.mm.

                                                       :(id)engineMock {
  id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
  OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
      [engineMock binaryMessenger])
      .andReturn(binaryMessengerMock);
  OCMStub([[engineMock ignoringNonObjectArgs] sendKeyEvent:FlutterKeyEvent {}
                                                  callback:nil
                                                  userData:nil])
      .andCall([FlutterViewControllerTestObjC class],
               @selector(respondFalseForSendEvent:callback:userData:));
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  id responderMock = flutter::testing::mockResponder();
  id responderWrapper = [[FlutterResponderWrapper alloc] initWithResponder:responderMock];
  viewController.nextResponder = responderWrapper;
  NSDictionary* expectedEvent = @{
    @"keymap" : @"macos",
    @"type" : @"keydown",
    @"keyCode" : @(56),  // SHIFT key
    @"modifiers" : @(537001986),
  };
  NSData* encodedKeyEvent = [[FlutterJSONMessageCodec sharedInstance] encode:expectedEvent];
  CGEventRef cgEvent = CGEventCreateKeyboardEvent(NULL, 56, TRUE);  // SHIFT key
  CGEventSetType(cgEvent, kCGEventFlagsChanged);
  NSEvent* event = [NSEvent eventWithCGEvent:cgEvent];
  OCMExpect(  // NOLINT(google-objc-avoid-throwing-exception)
      [binaryMessengerMock sendOnChannel:@"flutter/keyevent"
                                 message:encodedKeyEvent
                             binaryReply:[OCMArg any]])
      .andDo((^(NSInvocation* invocation) {
        FlutterBinaryReply handler;
        [invocation getArgument:&handler atIndex:4];
        NSDictionary* reply = @{
          @"handled" : @(false),
        };
        NSData* encodedReply = [[FlutterJSONMessageCodec sharedInstance] encode:reply];
        handler(encodedReply);
      }));
  [viewController viewWillAppear];  // Initializes the event channel.
  [viewController flagsChanged:event];
  @try {
    OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
        [binaryMessengerMock sendOnChannel:@"flutter/keyevent"
                                   message:encodedKeyEvent
                               binaryReply:[OCMArg any]]);
  } @catch (NSException* e) {
    NSLog(@"%@", e.reason);
    return false;
  }
  return true;
}

References FlutterBinaryReply, and <FlutterMessageCodec>::sharedInstance.

testFlutterViewIsConfigured:

- (bool) testFlutterViewIsConfigured:

(id)

mockEngine

Definition at line 524 of file FlutterViewControllerTest.mm.

                                   :(id)engineMock {
  FlutterRenderer* renderer_ = [[FlutterRenderer alloc] initWithFlutterEngine:engineMock];
  OCMStub([engineMock renderer]).andReturn(renderer_);
 
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  [viewController loadView];
 
  @try {
    // Make sure "renderer" was called during "loadView", which means "flutterView" is created
    OCMVerify([engineMock renderer]);
  } @catch (...) {
    return false;
  }
 
  return true;
}

testKeyboardIsRestartedOnEngineRestart:

- (bool) testKeyboardIsRestartedOnEngineRestart:

(id)

mockEngine

Definition at line 651 of file FlutterViewControllerTest.mm.

                                              :(id)engineMock {
  id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
  OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
      [engineMock binaryMessenger])
      .andReturn(binaryMessengerMock);
  __block bool called = false;
  __block FlutterKeyEvent last_event;
  OCMStub([[engineMock ignoringNonObjectArgs] sendKeyEvent:FlutterKeyEvent {}
                                                  callback:nil
                                                  userData:nil])
      .andDo((^(NSInvocation* invocation) {
        FlutterKeyEvent* event;
        [invocation getArgument:&event atIndex:2];
        called = true;
        last_event = *event;
      }));
 
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  [viewController viewWillAppear];
  NSEvent* keyADown = [NSEvent keyEventWithType:NSEventTypeKeyDown
                                       location:NSZeroPoint
                                  modifierFlags:0x100
                                      timestamp:0
                                   windowNumber:0
                                        context:nil
                                     characters:@"a"
                    charactersIgnoringModifiers:@"a"
                                      isARepeat:FALSE
                                        keyCode:0];
  const uint64_t kPhysicalKeyA = 0x70004;
 
  // Send KeyA key down event twice. Without restarting the keyboard during
  // onPreEngineRestart, the second event received will be an empty event with
  // physical key 0x0 because duplicate key down events are ignored.
 
  called = false;
  [viewController keyDown:keyADown];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.type, kFlutterKeyEventTypeDown);
  EXPECT_EQ(last_event.physical, kPhysicalKeyA);
 
  [viewController onPreEngineRestart];
 
  called = false;
  [viewController keyDown:keyADown];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.type, kFlutterKeyEventTypeDown);
  EXPECT_EQ(last_event.physical, kPhysicalKeyA);
  return true;
}

References FlutterViewController::onPreEngineRestart.

testKeyEquivalentIsPassedToTextInputPlugin:

- (bool) testKeyEquivalentIsPassedToTextInputPlugin:

(id)

mockEngine

Definition at line 419 of file FlutterViewControllerTest.mm.

                                                  :(id)engineMock {
  __block bool called = false;
  __block FlutterKeyEvent last_event;
  OCMStub([[engineMock ignoringNonObjectArgs] sendKeyEvent:FlutterKeyEvent {}
                                                  callback:nil
                                                  userData:nil])
      .andDo((^(NSInvocation* invocation) {
        FlutterKeyEvent* event;
        [invocation getArgument:&event atIndex:2];
        called = true;
        last_event = *event;
      }));
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  // Ctrl+tab
  NSEvent* event = [NSEvent keyEventWithType:NSEventTypeKeyDown
                                    location:NSZeroPoint
                               modifierFlags:0x40101
                                   timestamp:0
                                windowNumber:0
                                     context:nil
                                  characters:@""
                 charactersIgnoringModifiers:@""
                                   isARepeat:NO
                                     keyCode:48];
  const uint64_t kPhysicalKeyTab = 0x7002b;
 
  [viewController viewWillAppear];  // Initializes the event channel.
 
  NSWindow* window = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 800, 600)
                                                 styleMask:NSBorderlessWindowMask
                                                   backing:NSBackingStoreBuffered
                                                     defer:NO];
  window.contentView = viewController.view;
 
  [viewController.view addSubview:viewController.textInputPlugin];
 
  // Make the textInputPlugin first responder. This should still result in
  // view controller reporting the key event.
  [window makeFirstResponder:viewController.textInputPlugin];
 
  [viewController.view performKeyEquivalent:event];
 
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.type, kFlutterKeyEventTypeDown);
  EXPECT_EQ(last_event.physical, kPhysicalKeyTab);
  return true;
}

testKeyEventsAreNotPropagatedIfHandled:

- (bool) testKeyEventsAreNotPropagatedIfHandled:

(id)

mockEngine

Definition at line 596 of file FlutterViewControllerTest.mm.

                                              :(id)engineMock {
  id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
  OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
      [engineMock binaryMessenger])
      .andReturn(binaryMessengerMock);
  OCMStub([[engineMock ignoringNonObjectArgs] sendKeyEvent:FlutterKeyEvent {}
                                                  callback:nil
                                                  userData:nil])
      .andCall([FlutterViewControllerTestObjC class],
               @selector(respondFalseForSendEvent:callback:userData:));
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  id responderMock = flutter::testing::mockResponder();
  id responderWrapper = [[FlutterResponderWrapper alloc] initWithResponder:responderMock];
  viewController.nextResponder = responderWrapper;
  NSDictionary* expectedEvent = @{
    @"keymap" : @"macos",
    @"type" : @"keydown",
    @"keyCode" : @(65),
    @"modifiers" : @(538968064),
    @"characters" : @".",
    @"charactersIgnoringModifiers" : @".",
  };
  NSData* encodedKeyEvent = [[FlutterJSONMessageCodec sharedInstance] encode:expectedEvent];
  CGEventRef cgEvent = CGEventCreateKeyboardEvent(NULL, 65, TRUE);
  NSEvent* event = [NSEvent eventWithCGEvent:cgEvent];
  OCMExpect(  // NOLINT(google-objc-avoid-throwing-exception)
      [binaryMessengerMock sendOnChannel:@"flutter/keyevent"
                                 message:encodedKeyEvent
                             binaryReply:[OCMArg any]])
      .andDo((^(NSInvocation* invocation) {
        FlutterBinaryReply handler;
        [invocation getArgument:&handler atIndex:4];
        NSDictionary* reply = @{
          @"handled" : @(true),
        };
        NSData* encodedReply = [[FlutterJSONMessageCodec sharedInstance] encode:reply];
        handler(encodedReply);
      }));
  [viewController viewWillAppear];  // Initializes the event channel.
  [viewController keyDown:event];
  @try {
    OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
        never(), [responderMock keyDown:[OCMArg any]]);
    OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
        [binaryMessengerMock sendOnChannel:@"flutter/keyevent"
                                   message:encodedKeyEvent
                               binaryReply:[OCMArg any]]);
  } @catch (...) {
    return false;
  }
  return true;
}

References FlutterBinaryReply, and <FlutterMessageCodec>::sharedInstance.

testKeyEventsArePropagatedIfNotHandled:

- (bool) testKeyEventsArePropagatedIfNotHandled:

(id)

mockEngine

Definition at line 469 of file FlutterViewControllerTest.mm.

                                              :(id)engineMock {
  id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
  OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
      [engineMock binaryMessenger])
      .andReturn(binaryMessengerMock);
  OCMStub([[engineMock ignoringNonObjectArgs] sendKeyEvent:FlutterKeyEvent {}
                                                  callback:nil
                                                  userData:nil])
      .andCall([FlutterViewControllerTestObjC class],
               @selector(respondFalseForSendEvent:callback:userData:));
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  id responderMock = flutter::testing::mockResponder();
  id responderWrapper = [[FlutterResponderWrapper alloc] initWithResponder:responderMock];
  viewController.nextResponder = responderWrapper;
  NSDictionary* expectedEvent = @{
    @"keymap" : @"macos",
    @"type" : @"keydown",
    @"keyCode" : @(65),
    @"modifiers" : @(538968064),
    @"characters" : @".",
    @"charactersIgnoringModifiers" : @".",
  };
  NSData* encodedKeyEvent = [[FlutterJSONMessageCodec sharedInstance] encode:expectedEvent];
  CGEventRef cgEvent = CGEventCreateKeyboardEvent(NULL, 65, TRUE);
  NSEvent* event = [NSEvent eventWithCGEvent:cgEvent];
  OCMExpect(  // NOLINT(google-objc-avoid-throwing-exception)
      [binaryMessengerMock sendOnChannel:@"flutter/keyevent"
                                 message:encodedKeyEvent
                             binaryReply:[OCMArg any]])
      .andDo((^(NSInvocation* invocation) {
        FlutterBinaryReply handler;
        [invocation getArgument:&handler atIndex:4];
        NSDictionary* reply = @{
          @"handled" : @(false),
        };
        NSData* encodedReply = [[FlutterJSONMessageCodec sharedInstance] encode:reply];
        handler(encodedReply);
      }));
  [viewController viewWillAppear];  // Initializes the event channel.
  [viewController keyDown:event];
  @try {
    OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
        [responderMock keyDown:[OCMArg any]]);
    OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
        [binaryMessengerMock sendOnChannel:@"flutter/keyevent"
                                   message:encodedKeyEvent
                               binaryReply:[OCMArg any]]);
  } @catch (...) {
    return false;
  }
  return true;
}

References FlutterBinaryReply, and <FlutterMessageCodec>::sharedInstance.

testKeyEventsAreSentToFramework:

- (bool) testKeyEventsAreSentToFramework:

(id)

mockEngine

Definition at line 337 of file FlutterViewControllerTest.mm.

                                       :(id)engineMock {
  id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
  OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
      [engineMock binaryMessenger])
      .andReturn(binaryMessengerMock);
  OCMStub([[engineMock ignoringNonObjectArgs] sendKeyEvent:FlutterKeyEvent {}
                                                  callback:nil
                                                  userData:nil])
      .andCall([FlutterViewControllerTestObjC class],
               @selector(respondFalseForSendEvent:callback:userData:));
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  NSDictionary* expectedEvent = @{
    @"keymap" : @"macos",
    @"type" : @"keydown",
    @"keyCode" : @(65),
    @"modifiers" : @(538968064),
    @"characters" : @".",
    @"charactersIgnoringModifiers" : @".",
  };
  NSData* encodedKeyEvent = [[FlutterJSONMessageCodec sharedInstance] encode:expectedEvent];
  CGEventRef cgEvent = CGEventCreateKeyboardEvent(NULL, 65, TRUE);
  NSEvent* event = [NSEvent eventWithCGEvent:cgEvent];
  [viewController viewWillAppear];  // Initializes the event channel.
  [viewController keyDown:event];
  @try {
    OCMVerify(  // NOLINT(google-objc-avoid-throwing-exception)
        [binaryMessengerMock sendOnChannel:@"flutter/keyevent"
                                   message:encodedKeyEvent
                               binaryReply:[OCMArg any]]);
  } @catch (...) {
    return false;
  }
  return true;
}

References <FlutterMessageCodec>::sharedInstance.

testLookupKeyAssets

- (bool) testLookupKeyAssets

Definition at line 1058 of file FlutterViewControllerTest.mm.

                            {
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithProject:nil];
  NSString* key = [viewController lookupKeyForAsset:@"test.png"];
  EXPECT_TRUE(
      [key isEqualToString:@"Contents/Frameworks/App.framework/Resources/flutter_assets/test.png"]);
  return true;
}

References FlutterViewController::lookupKeyForAsset:.

testLookupKeyAssetsWithPackage

- (bool) testLookupKeyAssetsWithPackage

Definition at line 1066 of file FlutterViewControllerTest.mm.

                                       {
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithProject:nil];
 
  NSString* packageKey = [viewController lookupKeyForAsset:@"test.png" fromPackage:@"test"];
  EXPECT_TRUE([packageKey
      isEqualToString:
          @"Contents/Frameworks/App.framework/Resources/flutter_assets/packages/test/test.png"]);
  return true;
}

References FlutterViewController::lookupKeyForAsset:fromPackage:.

testModifierKeysAreSynthesizedOnMouseMove:

- (bool) testModifierKeysAreSynthesizedOnMouseMove:

(id)

mockEngine

Definition at line 1121 of file FlutterViewControllerTest.mm.

                                                 :(id)engineMock {
  id binaryMessengerMock = OCMProtocolMock(@protocol(FlutterBinaryMessenger));
  OCMStub(  // NOLINT(google-objc-avoid-throwing-exception)
      [engineMock binaryMessenger])
      .andReturn(binaryMessengerMock);
 
  // Need to return a real renderer to allow view controller to load.
  FlutterRenderer* renderer_ = [[FlutterRenderer alloc] initWithFlutterEngine:engineMock];
  OCMStub([engineMock renderer]).andReturn(renderer_);
 
  // Capture calls to sendKeyEvent
  __block NSMutableArray<KeyEventWrapper*>* events = [NSMutableArray array];
  OCMStub([[engineMock ignoringNonObjectArgs] sendKeyEvent:FlutterKeyEvent {}
                                                  callback:nil
                                                  userData:nil])
      .andDo((^(NSInvocation* invocation) {
        FlutterKeyEvent* event;
        [invocation getArgument:&event atIndex:2];
        [events addObject:[[KeyEventWrapper alloc] initWithEvent:event]];
      }));
 
  __block NSMutableArray<NSDictionary*>* channelEvents = [NSMutableArray array];
  OCMStub([binaryMessengerMock sendOnChannel:@"flutter/keyevent"
                                     message:[OCMArg any]
                                 binaryReply:[OCMArg any]])
      .andDo((^(NSInvocation* invocation) {
        NSData* data;
        [invocation getArgument:&data atIndex:3];
        id event = [[FlutterJSONMessageCodec sharedInstance] decode:data];
        [channelEvents addObject:event];
      }));
 
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  [viewController loadView];
  [viewController viewWillAppear];
 
  // Zeroed modifier flag should not synthesize events.
  NSEvent* mouseEvent = flutter::testing::CreateMouseEvent(0x00);
  [viewController mouseMoved:mouseEvent];
  EXPECT_EQ([events count], 0u);
 
  // For each modifier key, check that key events are synthesized.
  for (NSNumber* keyCode in flutter::keyCodeToModifierFlag) {
    FlutterKeyEvent* event;
    NSDictionary* channelEvent;
    NSNumber* logicalKey;
    NSNumber* physicalKey;
    NSEventModifierFlags flag = [flutter::keyCodeToModifierFlag[keyCode] unsignedLongValue];
 
    // Cocoa event always contain combined flags.
    if (flag & (flutter::kModifierFlagShiftLeft | flutter::kModifierFlagShiftRight)) {
      flag |= NSEventModifierFlagShift;
    }
    if (flag & (flutter::kModifierFlagControlLeft | flutter::kModifierFlagControlRight)) {
      flag |= NSEventModifierFlagControl;
    }
    if (flag & (flutter::kModifierFlagAltLeft | flutter::kModifierFlagAltRight)) {
      flag |= NSEventModifierFlagOption;
    }
    if (flag & (flutter::kModifierFlagMetaLeft | flutter::kModifierFlagMetaRight)) {
      flag |= NSEventModifierFlagCommand;
    }
 
    // Should synthesize down event.
    NSEvent* mouseEvent = flutter::testing::CreateMouseEvent(flag);
    [viewController mouseMoved:mouseEvent];
    EXPECT_EQ([events count], 1u);
    event = events[0].data;
    logicalKey = [flutter::keyCodeToLogicalKey objectForKey:keyCode];
    physicalKey = [flutter::keyCodeToPhysicalKey objectForKey:keyCode];
    EXPECT_EQ(event->type, kFlutterKeyEventTypeDown);
    EXPECT_EQ(event->logical, logicalKey.unsignedLongLongValue);
    EXPECT_EQ(event->physical, physicalKey.unsignedLongLongValue);
    EXPECT_EQ(event->synthesized, true);
 
    channelEvent = channelEvents[0];
    EXPECT_TRUE([channelEvent[@"type"] isEqual:@"keydown"]);
    EXPECT_TRUE([channelEvent[@"keyCode"] isEqual:keyCode]);
    EXPECT_TRUE([channelEvent[@"modifiers"] isEqual:@(flag)]);
 
    // Should synthesize up event.
    mouseEvent = flutter::testing::CreateMouseEvent(0x00);
    [viewController mouseMoved:mouseEvent];
    EXPECT_EQ([events count], 2u);
    event = events[1].data;
    logicalKey = [flutter::keyCodeToLogicalKey objectForKey:keyCode];
    physicalKey = [flutter::keyCodeToPhysicalKey objectForKey:keyCode];
    EXPECT_EQ(event->type, kFlutterKeyEventTypeUp);
    EXPECT_EQ(event->logical, logicalKey.unsignedLongLongValue);
    EXPECT_EQ(event->physical, physicalKey.unsignedLongLongValue);
    EXPECT_EQ(event->synthesized, true);
 
    channelEvent = channelEvents[1];
    EXPECT_TRUE([channelEvent[@"type"] isEqual:@"keyup"]);
    EXPECT_TRUE([channelEvent[@"keyCode"] isEqual:keyCode]);
    EXPECT_TRUE([channelEvent[@"modifiers"] isEqual:@(0)]);
 
    [events removeAllObjects];
    [channelEvents removeAllObjects];
  };
 
  return true;
}

References KeyEventWrapper::data, flutter::keyCodeToModifierFlag, flutter::kModifierFlagAltLeft, flutter::kModifierFlagAltRight, flutter::kModifierFlagControlLeft, flutter::kModifierFlagControlRight, flutter::kModifierFlagMetaLeft, flutter::kModifierFlagMetaRight, flutter::kModifierFlagShiftLeft, flutter::kModifierFlagShiftRight, and <FlutterMessageCodec>::sharedInstance.

testMouseDownUpEventsSentToNextResponder:

- (bool) testMouseDownUpEventsSentToNextResponder:

(id)

mockEngine

Definition at line 1085 of file FlutterViewControllerTest.mm.

                                                :(id)engineMock {
  // The root cause of the above bug is NSResponder mouseDown/mouseUp methods that don't correctly
  // walk the responder chain calling the appropriate method on the next responder under certain
  // conditions. Simulate this by swizzling out the default implementations and replacing them with
  // no-ops.
  Method mouseDown = class_getInstanceMethod([NSResponder class], @selector(mouseDown:));
  Method mouseUp = class_getInstanceMethod([NSResponder class], @selector(mouseUp:));
  IMP noopImp = (IMP)SwizzledNoop;
  IMP origMouseDown = method_setImplementation(mouseDown, noopImp);
  IMP origMouseUp = method_setImplementation(mouseUp, noopImp);
 
  // Verify that mouseDown/mouseUp trigger mouseDown/mouseUp calls on FlutterViewController.
  MouseEventFlutterViewController* viewController =
      [[MouseEventFlutterViewController alloc] initWithEngine:engineMock nibName:@"" bundle:nil];
  FlutterView* view = (FlutterView*)[viewController view];
 
  EXPECT_FALSE(viewController.mouseDownCalled);
  EXPECT_FALSE(viewController.mouseUpCalled);
 
  NSEvent* mouseEvent = flutter::testing::CreateMouseEvent(0x00);
  [view mouseDown:mouseEvent];
  EXPECT_TRUE(viewController.mouseDownCalled);
  EXPECT_FALSE(viewController.mouseUpCalled);
 
  viewController.mouseDownCalled = NO;
  [view mouseUp:mouseEvent];
  EXPECT_FALSE(viewController.mouseDownCalled);
  EXPECT_TRUE(viewController.mouseUpCalled);
 
  // Restore the original NSResponder mouseDown/mouseUp implementations.
  method_setImplementation(mouseDown, origMouseDown);
  method_setImplementation(mouseUp, origMouseUp);
 
  return true;
}

References MouseEventFlutterViewController::mouseDownCalled, and MouseEventFlutterViewController::mouseUpCalled.

testTrackpadGesturesAreSentToFramework:

- (bool) testTrackpadGesturesAreSentToFramework:

(id)

mockEngine

Definition at line 712 of file FlutterViewControllerTest.mm.

                                              :(id)engineMock {
  // Need to return a real renderer to allow view controller to load.
  FlutterRenderer* renderer_ = [[FlutterRenderer alloc] initWithFlutterEngine:engineMock];
  OCMStub([engineMock renderer]).andReturn(renderer_);
  __block bool called = false;
  __block FlutterPointerEvent last_event;
  OCMStub([[engineMock ignoringNonObjectArgs] sendPointerEvent:FlutterPointerEvent{}])
      .andDo((^(NSInvocation* invocation) {
        FlutterPointerEvent* event;
        [invocation getArgument:&event atIndex:2];
        called = true;
        last_event = *event;
      }));
 
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  [viewController loadView];
 
  // Test for pan events.
  // Start gesture.
  CGEventRef cgEventStart = CGEventCreateScrollWheelEvent(NULL, kCGScrollEventUnitPixel, 1, 0);
  CGEventSetType(cgEventStart, kCGEventScrollWheel);
  CGEventSetIntegerValueField(cgEventStart, kCGScrollWheelEventScrollPhase, kCGScrollPhaseBegan);
  CGEventSetIntegerValueField(cgEventStart, kCGScrollWheelEventIsContinuous, 1);
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventStart]];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomStart);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
 
  // Update gesture.
  CGEventRef cgEventUpdate = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventUpdate, kCGScrollWheelEventScrollPhase, kCGScrollPhaseChanged);
  CGEventSetIntegerValueField(cgEventUpdate, kCGScrollWheelEventDeltaAxis2, 1);  // pan_x
  CGEventSetIntegerValueField(cgEventUpdate, kCGScrollWheelEventDeltaAxis1, 2);  // pan_y
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventUpdate]];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomUpdate);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.pan_x, 8 * viewController.flutterView.layer.contentsScale);
  EXPECT_EQ(last_event.pan_y, 16 * viewController.flutterView.layer.contentsScale);
 
  // Make sure the pan values accumulate.
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventUpdate]];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomUpdate);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.pan_x, 16 * viewController.flutterView.layer.contentsScale);
  EXPECT_EQ(last_event.pan_y, 32 * viewController.flutterView.layer.contentsScale);
 
  // End gesture.
  CGEventRef cgEventEnd = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventEnd, kCGScrollWheelEventScrollPhase, kCGScrollPhaseEnded);
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventEnd]];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomEnd);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
 
  // Start system momentum.
  CGEventRef cgEventMomentumStart = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventMomentumStart, kCGScrollWheelEventScrollPhase, 0);
  CGEventSetIntegerValueField(cgEventMomentumStart, kCGScrollWheelEventMomentumPhase,
                              kCGMomentumScrollPhaseBegin);
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventMomentumStart]];
  EXPECT_FALSE(called);
 
  // Advance system momentum.
  CGEventRef cgEventMomentumUpdate = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventMomentumUpdate, kCGScrollWheelEventScrollPhase, 0);
  CGEventSetIntegerValueField(cgEventMomentumUpdate, kCGScrollWheelEventMomentumPhase,
                              kCGMomentumScrollPhaseContinue);
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventMomentumUpdate]];
  EXPECT_FALSE(called);
 
  // Mock a touch on the trackpad.
  id touchMock = OCMClassMock([NSTouch class]);
  NSSet* touchSet = [NSSet setWithObject:touchMock];
  id touchEventMock1 = OCMClassMock([NSEvent class]);
  OCMStub([touchEventMock1 allTouches]).andReturn(touchSet);
  CGPoint touchLocation = {0, 0};
  OCMStub([touchEventMock1 locationInWindow]).andReturn(touchLocation);
  OCMStub([(NSEvent*)touchEventMock1 timestamp]).andReturn(0.150);  // 150 milliseconds.
 
  // Scroll inertia cancel event should not be issued (timestamp too far in the future).
  called = false;
  [viewController touchesBeganWithEvent:touchEventMock1];
  EXPECT_FALSE(called);
 
  // Mock another touch on the trackpad.
  id touchEventMock2 = OCMClassMock([NSEvent class]);
  OCMStub([touchEventMock2 allTouches]).andReturn(touchSet);
  OCMStub([touchEventMock2 locationInWindow]).andReturn(touchLocation);
  OCMStub([(NSEvent*)touchEventMock2 timestamp]).andReturn(0.005);  // 5 milliseconds.
 
  // Scroll inertia cancel event should be issued.
  called = false;
  [viewController touchesBeganWithEvent:touchEventMock2];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindScrollInertiaCancel);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
 
  // End system momentum.
  CGEventRef cgEventMomentumEnd = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventMomentumEnd, kCGScrollWheelEventScrollPhase, 0);
  CGEventSetIntegerValueField(cgEventMomentumEnd, kCGScrollWheelEventMomentumPhase,
                              kCGMomentumScrollPhaseEnd);
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventMomentumEnd]];
  EXPECT_FALSE(called);
 
  // May-begin and cancel are used while macOS determines which type of gesture to choose.
  CGEventRef cgEventMayBegin = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventMayBegin, kCGScrollWheelEventScrollPhase,
                              kCGScrollPhaseMayBegin);
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventMayBegin]];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomStart);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
 
  // Cancel gesture.
  CGEventRef cgEventCancel = CGEventCreateCopy(cgEventStart);
  CGEventSetIntegerValueField(cgEventCancel, kCGScrollWheelEventScrollPhase,
                              kCGScrollPhaseCancelled);
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventCancel]];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomEnd);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
 
  // A discrete scroll event should use the PointerSignal system.
  CGEventRef cgEventDiscrete = CGEventCreateScrollWheelEvent(NULL, kCGScrollEventUnitPixel, 1, 0);
  CGEventSetType(cgEventDiscrete, kCGEventScrollWheel);
  CGEventSetIntegerValueField(cgEventDiscrete, kCGScrollWheelEventIsContinuous, 0);
  CGEventSetIntegerValueField(cgEventDiscrete, kCGScrollWheelEventDeltaAxis2, 1);  // scroll_delta_x
  CGEventSetIntegerValueField(cgEventDiscrete, kCGScrollWheelEventDeltaAxis1, 2);  // scroll_delta_y
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventDiscrete]];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindScroll);
  // pixelsPerLine is 40.0 and direction is reversed.
  EXPECT_EQ(last_event.scroll_delta_x, -40 * viewController.flutterView.layer.contentsScale);
  EXPECT_EQ(last_event.scroll_delta_y, -80 * viewController.flutterView.layer.contentsScale);
 
  // A discrete scroll event should use the PointerSignal system, and flip the
  // direction when shift is pressed.
  CGEventRef cgEventDiscreteShift =
      CGEventCreateScrollWheelEvent(NULL, kCGScrollEventUnitPixel, 1, 0);
  CGEventSetType(cgEventDiscreteShift, kCGEventScrollWheel);
  CGEventSetFlags(cgEventDiscreteShift, kCGEventFlagMaskShift | flutter::kModifierFlagShiftLeft);
  CGEventSetIntegerValueField(cgEventDiscreteShift, kCGScrollWheelEventIsContinuous, 0);
  CGEventSetIntegerValueField(cgEventDiscreteShift, kCGScrollWheelEventDeltaAxis2,
                              0);  // scroll_delta_x
  CGEventSetIntegerValueField(cgEventDiscreteShift, kCGScrollWheelEventDeltaAxis1,
                              2);  // scroll_delta_y
 
  called = false;
  [viewController scrollWheel:[NSEvent eventWithCGEvent:cgEventDiscreteShift]];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindScroll);
  // pixelsPerLine is 40.0, direction is reversed and axes have been flipped back.
  EXPECT_FLOAT_EQ(last_event.scroll_delta_x, 0.0 * viewController.flutterView.layer.contentsScale);
  EXPECT_FLOAT_EQ(last_event.scroll_delta_y,
                  -80.0 * viewController.flutterView.layer.contentsScale);
 
  // Test for scale events.
  // Start gesture.
  called = false;
  [viewController magnifyWithEvent:flutter::testing::MockGestureEvent(NSEventTypeMagnify,
                                                                      NSEventPhaseBegan, 1, 0)];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomStart);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
 
  // Update gesture.
  called = false;
  [viewController magnifyWithEvent:flutter::testing::MockGestureEvent(NSEventTypeMagnify,
                                                                      NSEventPhaseChanged, 1, 0)];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomUpdate);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.pan_x, 0);
  EXPECT_EQ(last_event.pan_y, 0);
  EXPECT_EQ(last_event.scale, 2);  // macOS uses logarithmic scaling values, the linear value for
                                   // flutter here should be 2^1 = 2.
  EXPECT_EQ(last_event.rotation, 0);
 
  // Make sure the scale values accumulate.
  called = false;
  [viewController magnifyWithEvent:flutter::testing::MockGestureEvent(NSEventTypeMagnify,
                                                                      NSEventPhaseChanged, 1, 0)];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomUpdate);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.pan_x, 0);
  EXPECT_EQ(last_event.pan_y, 0);
  EXPECT_EQ(last_event.scale, 4);  // macOS uses logarithmic scaling values, the linear value for
                                   // flutter here should be 2^(1+1) = 2.
  EXPECT_EQ(last_event.rotation, 0);
 
  // End gesture.
  called = false;
  [viewController magnifyWithEvent:flutter::testing::MockGestureEvent(NSEventTypeMagnify,
                                                                      NSEventPhaseEnded, 0, 0)];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomEnd);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
 
  // Test for rotation events.
  // Start gesture.
  called = false;
  [viewController rotateWithEvent:flutter::testing::MockGestureEvent(NSEventTypeRotate,
                                                                     NSEventPhaseBegan, 1, 0)];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomStart);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
 
  // Update gesture.
  called = false;
  [viewController rotateWithEvent:flutter::testing::MockGestureEvent(
                                      NSEventTypeRotate, NSEventPhaseChanged, 0, -180)];  // degrees
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomUpdate);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.pan_x, 0);
  EXPECT_EQ(last_event.pan_y, 0);
  EXPECT_EQ(last_event.scale, 1);
  EXPECT_EQ(last_event.rotation, M_PI);  // radians
 
  // Make sure the rotation values accumulate.
  called = false;
  [viewController rotateWithEvent:flutter::testing::MockGestureEvent(
                                      NSEventTypeRotate, NSEventPhaseChanged, 0, -360)];  // degrees
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomUpdate);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.pan_x, 0);
  EXPECT_EQ(last_event.pan_y, 0);
  EXPECT_EQ(last_event.scale, 1);
  EXPECT_EQ(last_event.rotation, 3 * M_PI);  // radians
 
  // End gesture.
  called = false;
  [viewController rotateWithEvent:flutter::testing::MockGestureEvent(NSEventTypeRotate,
                                                                     NSEventPhaseEnded, 0, 0)];
  EXPECT_TRUE(called);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
  EXPECT_EQ(last_event.phase, kPanZoomEnd);
  EXPECT_EQ(last_event.device_kind, kFlutterPointerDeviceKindTrackpad);
  EXPECT_EQ(last_event.signal_kind, kFlutterPointerSignalKindNone);
 
  // Test that stray NSEventPhaseCancelled event does not crash
  called = false;
  [viewController rotateWithEvent:flutter::testing::MockGestureEvent(NSEventTypeRotate,
                                                                     NSEventPhaseCancelled, 0, 0)];
  EXPECT_FALSE(called);
 
  return true;
}

References flutter::kModifierFlagShiftLeft.

testViewControllerIsReleased

- (bool) testViewControllerIsReleased

Definition at line 1227 of file FlutterViewControllerTest.mm.

                                     {
  __weak FlutterViewController* weakController;
  @autoreleasepool {
    id engineMock = flutter::testing::CreateMockFlutterEngine(@"");
 
    FlutterRenderer* renderer_ = [[FlutterRenderer alloc] initWithFlutterEngine:engineMock];
    OCMStub([engineMock renderer]).andReturn(renderer_);
 
    FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                  nibName:@""
                                                                                   bundle:nil];
    [viewController loadView];
    weakController = viewController;
 
    [engineMock shutDownEngine];
  }
 
  EXPECT_EQ(weakController, nil);
  return true;
}

References flutter::testing::CreateMockFlutterEngine().

testViewWillAppearCalledMultipleTimes:

- (bool) testViewWillAppearCalledMultipleTimes:

(id)

mockEngine

Definition at line 1049 of file FlutterViewControllerTest.mm.

                                             :(id)engineMock {
  FlutterViewController* viewController = [[FlutterViewController alloc] initWithEngine:engineMock
                                                                                nibName:@""
                                                                                 bundle:nil];
  [viewController viewWillAppear];
  [viewController viewWillAppear];
  return true;
}

---

The documentation for this class was generated from the following file:

• shell/platform/darwin/macos/framework/Source/FlutterViewControllerTest.mm