public void GetMovie_On401Response_MustThrowUnauthorizedApiAccessException_WithMoq()
{
//we want to mock HttpHandler that returns 401 response
//mock HttpHandler
var unauthorizedResponseHttpMessageHandlerMock = new Mock <HttpMessageHandler>();
//issue- we want to mock the result of sendAsync Method of HttpMessageHandler Class
//but the method is protected and Moq can't automatically implement that
//Can be manually implemented with Moq .Protected() extension methods
//setup the protected method to mock (MOCKED HANDLER)
unauthorizedResponseHttpMessageHandlerMock.Protected()
.Setup <Task <HttpResponseMessage> >( // return type of method - HttpResponseMessage
"SendAsync", // Method name to mock
ItExpr.IsAny <HttpRequestMessage>(), // any object of Type HttpRequestMessage for 1st parameter
ItExpr.IsAny <CancellationToken>() // any object of Type CancellationToken for 2nd parameter
).ReturnsAsync(new HttpResponseMessage() // object that is returned from the method
{
StatusCode = HttpStatusCode.Unauthorized
});
var httpClient = new HttpClient(unauthorizedResponseHttpMessageHandlerMock.Object);
var testableClass = new TestableClassWithAPIAccess(httpClient);
var cancellationTokenSource = new CancellationTokenSource();
Assert.ThrowsAsync <UnauthorizedApiAccessException>(
() => testableClass.GetMovie(cancellationTokenSource.Token));
}
public void GetMovie_On401Response_MustThrowUnauthorizedApiAccessException_WithCustomHandler()
{
var httpClient = new HttpClient(new Return401UnauthorizedResponseHandler());
var testableClass = new TestableClassWithAPIAccess(httpClient);
var cancellationTokenSource = new CancellationTokenSource();
Assert.ThrowsAsync <UnauthorizedApiAccessException>(
() => testableClass.GetMovie(cancellationTokenSource.Token));
}
