public async Task DoNotReadEntireResponseBody()
{
// Arrange
var command = new CheckHttpEndpoint(
HttpMonitorCheckId.Create(),
HttpMonitorId.Create(),
new HttpRequest(HttpMethod.Get, _httpServer.BaseAddress));
_httpServer.Handler = async ctx =>
{
ctx.Response.StatusCode = (int)HttpStatusCode.Accepted;
// write infinitely to the response stream
while (true)
{
await ctx.Response.WriteAsync(Guid.NewGuid().ToString());
}
// ReSharper disable once FunctionNeverReturns
};
// Act
var @event = await _executor.CheckHttpEndpointAsync(command);
// Assert
Assert.Null(@event.ErrorMessage);
Assert.Equal(HttpStatusCode.Accepted, @event.Response.StatusCode);
}
public async Task RequestHttpMethodAndPathCalled(string httpMethod)
{
// Arrange
var command = new CheckHttpEndpoint(
HttpMonitorCheckId.Create(),
HttpMonitorId.Create(),
new HttpRequest(new HttpMethod(httpMethod),
new Uri(_httpServer.BaseAddress,
$"/api/{DateTime.UtcNow.Ticks}/index.html?q={DateTime.UtcNow.Ticks}")));
string actualHttpMethod = null;
string actualRelativePath = null;
string actualQueryString = null;
_httpServer.Handler = ctx =>
{
// capture request data
actualHttpMethod = ctx.Request.Method;
actualRelativePath = ctx.Request.Path.Value;
actualQueryString = ctx.Request.QueryString.Value;
return(Task.CompletedTask);
};
// Act
await _executor.CheckHttpEndpointAsync(command);
// Assert
Assert.Equal(command.Request.Method.Method, actualHttpMethod, StringComparer.InvariantCultureIgnoreCase);
Assert.Equal(command.Request.Url.AbsolutePath, actualRelativePath);
Assert.Equal(command.Request.Url.Query, actualQueryString);
}
private Message ToMessage(CheckHttpEndpoint command)
{
var message = _converter.Convert(command);
message.MessageId = $"{DateTime.UtcNow:yyyyMMddhhmm}-{command.HttpMonitorId}";
return(message);
}
public async Task EndpointUnavailableReturnsError()
{
// Arrange
var command = new CheckHttpEndpoint(
HttpMonitorCheckId.Create(),
HttpMonitorId.Create(),
new HttpRequest(HttpMethod.Get, new Uri("http://localhost:9485/")));// nothing should be open on port
// Act
var @event = await _executor.CheckHttpEndpointAsync(command);
// Assert
Assert.Null(@event.Response);
Assert.Equal("A connection with the server could not be established", @event.ErrorMessage);
}
public async Task <HttpMonitorCheck> CheckHttpEndpointAsync(CheckHttpEndpoint command)
{
HttpResponse response = null;
DateTime startTime;
DateTime endTime;
string errorMessage = null;
using (var requestMessage = BuildRequestMessage(command))
{
startTime = DateTime.UtcNow;
try
{
using (var responseMessage = await SendMessageAsync(requestMessage))
{
response = HttpResponse.Create(responseMessage);
}
}
catch (HttpRequestException ex)
{
if (ex.InnerException is Win32Exception win32Exception)
{
// A connection with the server could not be established
errorMessage = win32Exception.Message;
}
else
{
errorMessage = ex.Message;
}
}
catch (TaskCanceledException)
{
errorMessage = "Request timed out";
}
finally
{
endTime = DateTime.UtcNow;
}
}
return(command.CreateHttpMonitorCheck(new HttpRequestTiming(startTime, endTime), response, errorMessage));
}
public async Task ForceCloseConnectionReturnsError()
{
// Arrange
var command = new CheckHttpEndpoint(
HttpMonitorCheckId.Create(),
HttpMonitorId.Create(),
new HttpRequest(HttpMethod.Get, _httpServer.BaseAddress));
_httpServer.Handler = async ctx =>
{
await _httpServer.Host.StopAsync();
};
// Act
var @event = await _executor.CheckHttpEndpointAsync(command);
// Assert
Assert.Null(@event.Response);
Assert.Equal("The server returned an invalid or unrecognized response", @event.ErrorMessage);
}
public async Task ResponseCatpured(HttpStatusCode statusCode)
{
// Arrange
var command = new CheckHttpEndpoint(
HttpMonitorCheckId.Create(),
HttpMonitorId.Create(),
new HttpRequest(HttpMethod.Get, _httpServer.BaseAddress));
_httpServer.Handler = ctx =>
{
// set response status code
ctx.Response.StatusCode = (int)statusCode;
return(Task.CompletedTask);
};
// Act
var @event = await _executor.CheckHttpEndpointAsync(command);
// Assert
Assert.Equal(statusCode, @event.Response.StatusCode);
}
public async Task RequestTiming(int millisecondsDelay)
{
// Arrange
var command = new CheckHttpEndpoint(
HttpMonitorCheckId.Create(),
HttpMonitorId.Create(),
new HttpRequest(HttpMethod.Get, _httpServer.BaseAddress));
_httpServer.Handler = async ctx =>
{
await Task.Delay(millisecondsDelay);
};
// Act
var expectedStartTime = DateTime.UtcNow;
var @event = await _executor.CheckHttpEndpointAsync(command);
var expectedEndTime = DateTime.UtcNow;
// Assert
AssertDateTime.Equal(expectedStartTime, @event.RequestTiming.StartTime, TimeSpanComparer.DefaultTolerance);
AssertDateTime.Equal(expectedEndTime, @event.RequestTiming.EndTime, TimeSpanComparer.DefaultTolerance);
}
public async Task HangRequestReturnsTimeoutError()
{
// Arrange
var command = new CheckHttpEndpoint(
HttpMonitorCheckId.Create(),
HttpMonitorId.Create(),
new HttpRequest(HttpMethod.Get, _httpServer.BaseAddress));
// set timeout on client level
_httpClient.Timeout = TimeSpan.FromMilliseconds(100);
_httpServer.Handler = async ctx =>
{
await Task.Delay(TimeSpan.FromMilliseconds(1000));
};
// Act
var @event = await _executor.CheckHttpEndpointAsync(command);
// Assert
Assert.Null(@event.Response);
Assert.Equal("Request timed out", @event.ErrorMessage);
}
private HttpRequestMessage BuildRequestMessage(CheckHttpEndpoint command)
{
return(new HttpRequestMessage(command.Request.Method, command.Request.Url));
}
private CloudQueueMessage ToMessage(CheckHttpEndpoint command)
{
var message = _converter.Convert(command);
return(message);
}