packages/image_picker/image_picker_platform_interface/test/image_picker_platform_test.dart

// 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 'package:flutter_test/flutter_test.dart';
import 'package:image_picker_platform_interface/image_picker_platform_interface.dart';

void main() {
  group('ImagePickerPlatform', () {
    test('supportsImageSource defaults to true for original values', () async {
      final ImagePickerPlatform implementation = FakeImagePickerPlatform();

      expect(implementation.supportsImageSource(ImageSource.camera), true);
      expect(implementation.supportsImageSource(ImageSource.gallery), true);
    });
  });

  group('CameraDelegatingImagePickerPlatform', () {
    test(
        'supportsImageSource returns false for camera when there is no delegate',
        () async {
      final FakeCameraDelegatingImagePickerPlatform implementation =
          FakeCameraDelegatingImagePickerPlatform();

      expect(implementation.supportsImageSource(ImageSource.camera), false);
    });

    test('supportsImageSource returns true for camera when there is a delegate',
        () async {
      final FakeCameraDelegatingImagePickerPlatform implementation =
          FakeCameraDelegatingImagePickerPlatform();
      implementation.cameraDelegate = FakeCameraDelegate();

      expect(implementation.supportsImageSource(ImageSource.camera), true);
    });

    test('getImageFromSource for camera throws if delegate is not set',
        () async {
      final FakeCameraDelegatingImagePickerPlatform implementation =
          FakeCameraDelegatingImagePickerPlatform();

      await expectLater(
          implementation.getImageFromSource(source: ImageSource.camera),
          throwsStateError);
    });

    test('getVideo for camera throws if delegate is not set', () async {
      final FakeCameraDelegatingImagePickerPlatform implementation =
          FakeCameraDelegatingImagePickerPlatform();

      await expectLater(implementation.getVideo(source: ImageSource.camera),
          throwsStateError);
    });

    test('getImageFromSource for camera calls delegate if set', () async {
      const String fakePath = '/tmp/foo';
      final FakeCameraDelegatingImagePickerPlatform implementation =
          FakeCameraDelegatingImagePickerPlatform();
      implementation.cameraDelegate =
          FakeCameraDelegate(result: XFile(fakePath));

      expect(
          (await implementation.getImageFromSource(source: ImageSource.camera))!
              .path,
          fakePath);
    });

    test('getVideo for camera calls delegate if set', () async {
      const String fakePath = '/tmp/foo';
      final FakeCameraDelegatingImagePickerPlatform implementation =
          FakeCameraDelegatingImagePickerPlatform();
      implementation.cameraDelegate =
          FakeCameraDelegate(result: XFile(fakePath));

      expect((await implementation.getVideo(source: ImageSource.camera))!.path,
          fakePath);
    });
  });
}

class FakeImagePickerPlatform extends ImagePickerPlatform {}

class FakeCameraDelegatingImagePickerPlatform
    extends CameraDelegatingImagePickerPlatform {}

class FakeCameraDelegate extends ImagePickerCameraDelegate {
  FakeCameraDelegate({this.result});

  XFile? result;

  @override
  Future<XFile?> takePhoto(
      {ImagePickerCameraDelegateOptions options =
          const ImagePickerCameraDelegateOptions()}) async {
    return result;
  }

  @override
  Future<XFile?> takeVideo(
      {ImagePickerCameraDelegateOptions options =
          const ImagePickerCameraDelegateOptions()}) async {
    return result;
  }
}