public async Task UpdatingSourceOnlyUpdatesDrawableTwice()
{
var image = new ImageStub
{
Background = new SolidPaintStub(Colors.Black),
Source = new FileImageSourceStub("red.png"),
};
await InvokeOnMainThreadAsync(async() =>
{
var handler = CreateHandler <CountedImageHandler>(image);
await image.Wait();
await handler.NativeView.AssertContainsColor(Colors.Red);
handler.ImageEvents.Clear();
image.Source = new FileImageSourceStub("blue.png");
handler.UpdateValue(nameof(IImage.Source));
await image.Wait();
await handler.NativeView.AssertContainsColor(Colors.Blue);
Assert.Equal(2, handler.ImageEvents.Count);
Assert.Equal("Image", handler.ImageEvents[0].Member);
Assert.Null(handler.ImageEvents[0].Value);
Assert.Equal("Image", handler.ImageEvents[1].Member);
Assert.IsType <UIImage>(handler.ImageEvents[1].Value);
});
}
public async Task UpdatingSourceOnlyUpdatesDrawableTwice()
{
var image = new ImageStub
{
BackgroundColor = Colors.Black,
Source = new FileImageSourceStub("red.png"),
};
await InvokeOnMainThreadAsync(async() =>
{
var handler = CreateHandler <CountedImageHandler>(image);
await image.Wait();
await handler.NativeView.AssertContainsColor(Colors.Red);
handler.ImageEvents.Clear();
image.Source = new FileImageSourceStub("blue.png");
handler.UpdateValue(nameof(IImage.Source));
await image.Wait();
await handler.NativeView.AssertContainsColor(Colors.Blue);
Assert.Equal(2, handler.ImageEvents.Count);
Assert.Equal("SetImageResource", handler.ImageEvents[0].Member);
Assert.Equal(Android.Resource.Color.Transparent, handler.ImageEvents[0].Value);
Assert.Equal("SetImageDrawable", handler.ImageEvents[1].Member);
Assert.IsType <BitmapDrawable>(handler.ImageEvents[1].Value);
});
}
public async Task InitializingNullSourceOnlyUpdatesNull(string colorHex)
{
var expectedColor = Color.FromHex(colorHex);
var image = new ImageStub
{
Background = new SolidPaintStub(expectedColor),
};
await InvokeOnMainThreadAsync(async() =>
{
var handler = CreateHandler <CountedImageHandler>(image);
await image.Wait();
Assert.Single(handler.ImageEvents);
Assert.Equal("Image", handler.ImageEvents[0].Member);
Assert.Null(handler.ImageEvents[0].Value);
await handler.NativeView.AssertContainsColor(expectedColor);
});
}
public async Task InitializingNullSourceOnlyUpdatesTransparent(string colorHex)
{
var expectedColor = Color.FromHex(colorHex);
var image = new ImageStub
{
BackgroundColor = expectedColor,
};
await InvokeOnMainThreadAsync(async() =>
{
var handler = CreateHandler <CountedImageHandler>(image);
await image.Wait();
Assert.Single(handler.ImageEvents);
Assert.Equal("SetImageResource", handler.ImageEvents[0].Member);
Assert.Equal(Android.Resource.Color.Transparent, handler.ImageEvents[0].Value);
await handler.NativeView.AssertContainsColor(expectedColor);
});
}
public async Task InitializingSourceOnlyUpdatesImageOnce()
{
var image = new ImageStub
{
BackgroundColor = Colors.Black,
Source = new FileImageSourceStub("red.png"),
};
await InvokeOnMainThreadAsync(async() =>
{
var handler = CreateHandler <CountedImageHandler>(image);
await image.Wait();
await handler.NativeView.AssertContainsColor(Colors.Red);
Assert.Equal(2, handler.ImageEvents.Count);
Assert.Equal("Image", handler.ImageEvents[0].Member);
Assert.Null(handler.ImageEvents[0].Value);
Assert.Equal("Image", handler.ImageEvents[1].Member);
Assert.IsType <UIImage>(handler.ImageEvents[1].Value);
});
}