Issues 373 (Execute Bug), 374 (Remove Tests.Utility) and 375 (Clean warnings)

Src/GoogleApis.Tests/Apis/Http/ConfigurableMessageHandlerTest.cs

Index: Src/GoogleApis.Tests/Apis/Http/ConfigurableMessageHandlerTest.cs
===================================================================
--- a/Src/GoogleApis.Tests/Apis/Http/ConfigurableMessageHandlerTest.cs
 b/Src/GoogleApis.Tests/Apis/Http/ConfigurableMessageHandlerTest.cs
@@ -51,10 51,12 @@
 /// <summary> Message handler which returns a new successful (and empty) response. </summary>
 private class MockMessageHandler : HttpMessageHandler
 {
- protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request,
 protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request,
 CancellationToken cancellationToken)
 {
- return new HttpResponseMessage();
 TaskCompletionSource<HttpResponseMessage> tcs = new TaskCompletionSource<HttpResponseMessage>();
 tcs.SetResult(new HttpResponseMessage());
 return tcs.Task;
 }
 }
@@ -180,11 182,14 @@
 const string InjectedHeader = "Some-Header";
 const string InjectedValue = "123";
- protected override async Task<HttpResponseMessage> SendAsyncCore(HttpRequestMessage request,
 protected override Task<HttpResponseMessage> SendAsyncCore(HttpRequestMessage request,
 CancellationToken cancellationToken)
 {
 Assert.That(request.Headers.GetValues(InjectedHeader).First(), Is.EqualTo(InjectedValue));
- return InjectedResponseMessage;
 TaskCompletionSource<HttpResponseMessage> tcs = new TaskCompletionSource<HttpResponseMessage>();
 tcs.SetResult(InjectedResponseMessage);
 return tcs.Task;
 }
 /// <summary> A mock interceptor which inject a header to a request. </summary>
@@ -288,7 293,7 @@
 /// </summary>
 public int CancelRequestNum { get; set; }
- protected override async Task<HttpResponseMessage> SendAsyncCore(HttpRequestMessage request,
 protected override Task<HttpResponseMessage> SendAsyncCore(HttpRequestMessage request,
 CancellationToken cancellationToken)
 {
 if (Calls == CancelRequestNum)
@@ -296,7 301,9 @@
 CancellationTokenSource.Cancel();
 }
- return new HttpResponseMessage { StatusCode = ResponseStatusCode };
 TaskCompletionSource<HttpResponseMessage> tcs = new TaskCompletionSource<HttpResponseMessage>();
 tcs.SetResult(new HttpResponseMessage { StatusCode = ResponseStatusCode });
 return tcs.Task;
 }
 /// <summary> Unsuccessful response handler which "handles" only service unavailable responses. </summary>
@@ -416,7 423,7 @@
 /// </summary>
 public const string ExceptionMessage = "Exception from execute";
- protected override async Task<HttpResponseMessage> SendAsyncCore(HttpRequestMessage request,
 protected override Task<HttpResponseMessage> SendAsyncCore(HttpRequestMessage request,
 CancellationToken cancellationToken)
 {
 if (ThrowException)
@@ -424,7 431,9 @@
 throw Exception;
 }
- return new HttpResponseMessage();
 TaskCompletionSource<HttpResponseMessage> tcs = new TaskCompletionSource<HttpResponseMessage>();
 tcs.SetResult(new HttpResponseMessage());
 return tcs.Task;
 }
 /// <summary> Mock Exception handler which "handles" the exception. </summary>