public async Task CreateAsync_ExecutesRetryPolicyAsExpected()
{
// Expect the parameters to be passed to the method of the inner rest client.
// We'll throw an exception from within the callback method to trigger retries.
this.mockRestClient
.Setup(c => c.CreateAsync(
It.Is <EndpointName>(e => e.Equals(this.endpointName)),
It.Is <string>(j => j.Equals(this.inputData)),
It.Is <LogContext>(l => l.Equals(this.logContext)),
It.IsAny <CancellationToken>()))
.Callback((EndpointName en, string jd, LogContext lc, CancellationToken ct)
=> throw new ServiceUnavailableException("Something went wrong."));
try
{
IRestClient restClient = GetRestClientWithRetries();
await restClient.CreateAsync(this.endpointName, this.inputData, this.logContext, default);
Assert.Fail("Expected exception to be thrown.");
}
catch (ServiceUnavailableException)
{
}
// Verify our inner rest client was called 4 times (original invocation + retries)
this.mockRestClient.Verify(m => m.CreateAsync(this.endpointName, this.inputData, this.logContext, default),
Times.Exactly(RetryCount + 1));
}
public async Task CreateAsync_FailsOnFirstTryWhenExceptionIsNotHandledByPolicy()
{
// Expect the parameters to be passed to the method of the inner rest client.
// We'll throw an exception from within the callback method to trigger retries.
this.mockRestClient
.Setup(c => c.CreateAsync(
It.Is <EndpointName>(e => e.Equals(this.endpointName)),
It.Is <string>(j => j.Equals(this.inputData)),
It.Is <LogContext>(l => l.Equals(this.logContext)),
It.IsAny <CancellationToken>()))
.Callback((EndpointName en, string jd, LogContext lc, CancellationToken ct)
=> throw new BadRequestException("Bad request."));
IRestClient restClient = GetRestClientWithRetries();
try
{
await restClient.CreateAsync(this.endpointName, this.inputData, this.logContext, default);
Assert.Fail("Expected exception to be thrown.");
}
catch (BadRequestException)
{
}
// Verify our inner rest client was called exactly once.
this.mockRestClient.Verify(m => m.CreateAsync(this.endpointName, this.inputData, this.logContext, default),
Times.Once);
}
public async Task CreateAsync_SucceedsOnFirstTryWhenNoExceptionIsThrown()
{
// Expect the parameters to be passed to the method of the inner rest client.
// We'll throw an exception from within the callback method to trigger retries.
this.mockRestClient
.Setup(c => c.CreateAsync(
It.Is <EndpointName>(e => e.Equals(this.endpointName)),
It.Is <string>(j => j.Equals(this.inputData)),
It.Is <LogContext>(l => l.Equals(this.logContext)),
It.IsAny <CancellationToken>()))
.Returns(Task.FromResult("Done."));
IRestClient restClient = GetRestClientWithRetries();
string result = await restClient.CreateAsync(this.endpointName, this.inputData, this.logContext, default);
Assert.AreEqual(SuccessResult, result, $"Expected result: '{SuccessResult}'.");
// Verify our inner rest client was called only once.
this.mockRestClient.Verify(m => m.CreateAsync(this.endpointName, this.inputData, this.logContext, default),
Times.Once);
}
