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[Fact]
    public async Task TakePhotoAsync_WhenPhotoIsCaptured_ShouldSavePhoto()
    {
        // Arrange
        var mockFileResult = new Mock<FileResult>();
        var mockStream = new MemoryStream(new byte[] { 1, 2, 3 });
        
        mockFileResult
            .Setup(x => x.OpenReadAsync())
            .ReturnsAsync(mockStream);

        _mockMediaPickerService
            .Setup(x => x.CapturePhotoAsync())
            .ReturnsAsync(mockFileResult.Object);

        _mockPhotoStorageService
            .Setup(x => x.SavePhotoAsync(It.IsAny<Stream>(), It.IsAny<string>()))
            .ReturnsAsync("/path/to/saved/photo.png");

        // Act
        var result = await _cameraService.TakePhotoAsync();

        // Assert
        Assert.Equal("/path/to/saved/photo.png", result);
        _mockPhotoStorageService.Verify(x => x.SavePhotoAsync(mockStream, "png"), Times.Once);
    }