public async Task Invoke_HandlerAdded_HandlerCalled(NullLoggerFactory loggerFactory,
Mock <IServiceProvider> serviceProviderMock, string exceptionMessage, int statusCode,
string path, string method)
{
var expectedResponse = new TestResponse
{
Message = exceptionMessage
};
var exceptionHandler = new Mock <IExceptionHandler <ArgumentException> >();
exceptionHandler
.Setup(eh => eh.GetResponseData(It.IsAny <Exception>(), It.IsAny <ResponseContext>()))
.Returns((Exception exc, ResponseContext opt) => new ResponseData
{
StatusCode = statusCode,
Body = expectedResponse
});
serviceProviderMock
.Setup(s => s.GetService(typeof(IExceptionHandler <ArgumentException>)))
.Returns(exceptionHandler.Object);
//Arrange
var requestDelegate = new RequestDelegate(httpContext => throw new ArgumentException(exceptionMessage));
var httpContextMock = new HttpContextMock();
httpContextMock.HttpResponseMock.SetupSet(m => m.StatusCode = statusCode).Verifiable();
var expectedBody = JObject.FromObject(expectedResponse);
httpContextMock.HttpRequestMock.SetupGet(r => r.Path).Returns("/" + path);
httpContextMock.HttpRequestMock.SetupGet(r => r.Method).Returns(method);
var middleware = new ExceptionMiddleware(requestDelegate, loggerFactory, serviceProviderMock.Object);
//Act
await middleware.Invoke(httpContextMock.Object);
//Assert
httpContextMock.HttpResponseMock.Verify();
JToken.DeepEquals(expectedBody, JObject.Parse(httpContextMock.HttpResponseMock.ActualBody));
}