public async Task WhenAnUnExceptionExceptionIsRaised_CustomErrorResponseAndInternalServerErrorHttpStatus()
{
// Arrange
var middleware = new CustomExceptionMiddleware(next: (innerHttpContext) =>
{
throw new Exception("Test");
});
var context = new DefaultHttpContext();
context.Response.Body = new MemoryStream();
// Act
await middleware.Invoke(context);
context.Response.Body.Seek(0, SeekOrigin.Begin);
var reader = new StreamReader(context.Response.Body);
var streamText = reader.ReadToEnd();
var objResponse = JsonConvert.DeserializeObject <CustomErrorResponse>(streamText);
// Assert
objResponse.Message.ShouldBe("Unexpected error");
objResponse.Description.ShouldBe("Unexpected error");
context.Response.StatusCode.ShouldBe((int)HttpStatusCode.InternalServerError);
}
public async Task WhenAGenericExceptionIsRaised_CustomExceptionMiddlewareShouldHandleItToProperErrorResponseAndLoggerCalled()
{
// Arrange
var loggerMock = Substitute.For <ILogger <CustomExceptionMiddleware> >();
RequestDelegate requestDelegate = (innerHttpContext) =>
{
throw new Exception("Oooops error!");
};
var middleware = new CustomExceptionMiddleware(requestDelegate, loggerMock);
// Use DefaultHttpContext insteadof mocking HttpContext
var context = new DefaultHttpContext();
// Initialize response body
context.Response.Body = new MemoryStream();
//Act
await middleware.Invoke(context);
//Assert
// set the position to beginning before reading
context.Response.Body.Seek(0, SeekOrigin.Begin);
// Read the response
var reader = new StreamReader(context.Response.Body);
var streamText = reader.ReadToEnd();
var objResponse = JsonConvert.DeserializeObject <Error>(streamText);
objResponse
.Should()
.BeEquivalentTo(new { Message = "Unhandled error", Errors = new List <string>(), Code = "00009" });
context.Response.StatusCode
.Should()
.Be((int)HttpStatusCode.InternalServerError);
context.Response.ContentType
.Should()
.Be("application/json");
loggerMock.Received(1);
}