public void ExecuteAsync_Success_ImageLoadedToCache()
{
// Assert
Mock <IExternalImageServiceClient> externalImageServiceClient = new Mock <IExternalImageServiceClient>(MockBehavior.Strict);
var expected = new byte[] { 0, 1, 2, 3, 4 };
string imageName = "Image_name.png";
IMemoryCache memoryCache = new MemoryCache(new MemoryCacheOptions());
Mock <ICacheHelper> cacheHelper = new Mock <ICacheHelper>();
cacheHelper.Setup(x => x.ProcessCache(imageName)).Returns(expected);
Mock <IOptions <IFictionConfiguration> > configuration = new Mock <IOptions <IFictionConfiguration> >(MockBehavior.Strict);
configuration.Setup(x => x.Value.ImageName).Returns(imageName);
LoadImageService sut = new LoadImageService(externalImageServiceClient.Object, cacheHelper.Object, configuration.Object);
Type sutType = typeof(LoadImageService);
MethodInfo executeAsyncMethodInfo = sutType.GetMethod("ExecuteAsync", BindingFlags.NonPublic | BindingFlags.Instance);
// Act
executeAsyncMethodInfo.Invoke(sut, new object[] { CancellationToken.None });
// Assert
externalImageServiceClient.Verify(x => x.GetImage(), Times.Never);
cacheHelper.Verify(x => x.ProcessCache(imageName), Times.Once);
byte[] result = cacheHelper.Object.ProcessCache(imageName);
Assert.Equal(expected, result);
}
public void ExecuteAsync_Success_ImageLoadedToCache()
{
//Arrange
Mock <IExternalImageServiceClient> externalImageServiceClient = new Mock <IExternalImageServiceClient>(MockBehavior.Strict);
var expected = new byte[] { 0, 1, 2, 3, 4 };
externalImageServiceClient.Setup(x => x.GetImage()).Returns(expected);
IMemoryCache memoryCache = new MemoryCache(new MemoryCacheOptions());
var cacheKey = $"image_{DateTime.UtcNow.Date}";
LoadImageService sut = new LoadImageService(externalImageServiceClient.Object, memoryCache);
var sutType = typeof(LoadImageService);
var executeAsyncMethodInfo = sutType.GetMethod("ExecuteAsync", BindingFlags.NonPublic | BindingFlags.Instance);
//Act
executeAsyncMethodInfo.Invoke(sut, new object[] { CancellationToken.None });
//Assert
var result = memoryCache.Get <byte[]>(cacheKey);
Assert.Equal(expected, result);
}