public async Task ReleasingImageSourceReturnsDifferentBitmap()
{
var bitmapFile = CreateBitmapFile(100, 100, Colors.Red);
var imageSource = new FileImageSourceStub(bitmapFile);
var service = new FileImageSourceService();
// get an image
var result1 = await service.GetImageAsync(imageSource);
var uiimage1 = Assert.IsType <UIImage>(result1.Value);
// release
result1.Dispose();
// try collect it
var collected = await TryCollectFile(bitmapFile);
Assert.True(collected);
// get the image again
var result2 = await service.GetImageAsync(imageSource);
var uiimage2 = Assert.IsType <UIImage>(result2.Value);
// make sure it WAS collected and we got a new image
Assert.NotEqual(uiimage1, uiimage2);
result2.Dispose();
}
public async Task TheSameImageSourceReturnsTheSameBitmap()
{
var bitmapFile = CreateBitmapFile(100, 100, Colors.Red);
var imageSource = new FileImageSourceStub(bitmapFile);
var service = new FileImageSourceService();
// get an image
var result1 = await service.GetImageAsync(imageSource);
var uiimage1 = Assert.IsType <UIImage>(result1.Value);
// try collect it
var collected = await TryCollectFile(bitmapFile);
Assert.False(collected);
// get the image again
var result2 = await service.GetImageAsync(imageSource);
var uiimage2 = Assert.IsType <UIImage>(result2.Value);
// make sure it was NOT collected and we got the same image
Assert.Equal(uiimage1, uiimage2);
result1.Dispose();
result2.Dispose();
}
public async Task ThrowsForIncorrectTypes(Type type)
{
var service = new FileImageSourceService();
var imageSource = (ImageSourceStub)Activator.CreateInstance(type);
await Assert.ThrowsAsync <InvalidCastException>(() => service.GetImageAsync(imageSource));
}
public async Task GetImageAsyncWithResource(string filename, string colorHex)
{
var service = new FileImageSourceService();
var imageSource = new FileImageSourceStub(filename);
using var result = await service.GetImageAsync(imageSource);
var uiimage = Assert.IsType <UIImage>(result.Value);
var expectedColor = Color.FromHex(colorHex);
uiimage.AssertColorAtCenter(expectedColor.ToNative());
}
public async Task GetImageAsyncWithFile(string colorHex)
{
var expectedColor = Color.FromHex(colorHex);
var service = new FileImageSourceService();
var filename = CreateBitmapFile(100, 100, expectedColor);
var imageSource = new FileImageSourceStub(filename);
using var drawable = await service.GetImageAsync(imageSource);
var uiimage = Assert.IsType <UIImage>(drawable.Value);
uiimage.AssertColorAtCenter(expectedColor.ToNative());
}
