getting PlatformException(channel-error, Unable to establish connection on channel: "dev.flutter.pigeon.wakelock_plus_platform_interface.WakelockPlusApi.toggle"., null, null) error when running test cases

[shivamtiwari-ttn]

I am using wakelock_plus for one of my classes to keep player screen on. Test cases related to that file are failing. I was earlier using wakelock, recently updated to wakelock_plus. In the test case file I have a setupAll method where earlier for wakelock 'wakelock_macos' was used for MethodChannel name like below.

const channel = MethodChannel('wakelock_macos');
TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
        .setMockMethodCallHandler(channel, (MethodCall methodCall) async {
      return null;
    });

for this test cases were passed successfully.

After comparing the wakelock and wakelock_plus libraries, I attempted to utilise the MethodChannel named 'wakelock_plus_macos' for wakelock_plus in the same way that we used it for wakelock. const channel = MethodChannel('wakelock_plus_macos');

But test cases are failing with below error: PlatformException(channel-error, Unable to establish connection on channel: "dev.flutter.pigeon.wakelock_plus_platform_interface.WakelockPlusApi.toggle"., null, null)

Now if I use 'dev.flutter.pigeon.wakelock_plus_platform_interface.WakelockPlusApi.toggle' as the MethodChannel name like const channel = MethodChannel('dev.flutter.pigeon.wakelock_plus_platform_interface.WakelockPlusApi.toggle');

I am getting another error:

FormatException: Message corrupted

package:flutter/src/services/message_codecs.dart 532:16                               StandardMessageCodec.readValueOfType
package:flutter/src/services/message_codecs.dart 477:12                               StandardMessageCodec.readValue
package:flutter/src/services/message_codecs.dart 522:23                               StandardMessageCodec.readValueOfType
package:flutter/src/services/message_codecs.dart 477:12                               StandardMessageCodec.readValue
package:flutter/src/services/message_codecs.dart 609:41                               StandardMethodCodec.decodeMethodCall
package:flutter_test/src/test_default_binary_messenger.dart 300:45                    TestDefaultBinaryMessenger.setMockMethodCallHandler.<fn>
package:flutter_test/src/test_default_binary_messenger.dart 143:29                    TestDefaultBinaryMessenger.send
package:flutter/src/services/platform_channel.dart 218:54                             BasicMessageChannel.send
package:wakelock_plus_platform_interface/messages.g.dart 122:32                       WakelockPlusApi.toggle
package:wakelock_plus_platform_interface/src/method_channel_wakelock_plus.dart 20:16  MethodChannelWakelockPlus.toggle
package:wakelock_plus/wakelock_plus.dart 71:41                                        WakelockPlus.toggle

What should be used for MethodChannel to run test cases successfully

[shivamtiwari-ttn]

For those who are facing such issue, I was able to pass the test cases by making below change in my test file.

I have replaced

const channel = MethodChannel('wakelock_macos');
TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
        .setMockMethodCallHandler(channel, (MethodCall methodCall) async {
      return null;
    });

to

TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
        .setMockMessageHandler(
            'dev.flutter.pigeon.wakelock_plus_platform_interface.WakelockPlusApi.toggle',
            (obj) async => obj);