public async Task CommitTimeStampDataIsCorrect() { // Arrange var token = new CancellationToken(); var httpClientMock = new Mock <IHttpClientWrapper>(); var luceneExpectedTicks = 5; httpClientMock.Setup(hcm => hcm.GetAsync(It.Is <string>(it => it.Equals("Lucene-DiagUrl")), HttpCompletionOption.ResponseContentRead, It.IsAny <CancellationToken>())) .Returns(Task.FromResult((IHttpResponseMessageWrapper) new TestHttpResponseMessage(HttpStatusCode.OK, JsonConvert.SerializeObject(new SearchDiagnosticResponse { CommitUserData = new CommitUserData { CommitTimeStamp = new DateTimeOffset(luceneExpectedTicks, new TimeSpan(0)).ToString() }, LastIndexReloadTime = new DateTimeOffset(luceneExpectedTicks, new TimeSpan(0)) })))); httpClientMock.Setup(hcm => hcm.GetAsync(It.Is <string>(it => it.Equals("Azure-DiagUrl")), HttpCompletionOption.ResponseContentRead, It.IsAny <CancellationToken>())) .Returns(Task.FromResult((IHttpResponseMessageWrapper) new TestHttpResponseMessage(HttpStatusCode.OK, JsonConvert.SerializeObject(new AzureSearchDiagnosticResponse { SearchIndex = new IndexInformation { LastCommitTimestamp = new DateTimeOffset() } })))); var searchClient = new SearchServiceClient(httpClientMock.Object, _logger); var azureStartTimestamp = DateTime.UtcNow; var azureResponse = await searchClient.GetIndexLastReloadTimeAsync(_azureSearchInstance, token); var azureStopTimestamp = DateTime.UtcNow; Assert.InRange(azureResponse, azureStartTimestamp, azureStopTimestamp); }