public void Ctor_Set_Value_To_ConstantTimeSleepDurationInMilliseconds_Property()
{
// ARRANGE
const int numberOfRetriesWithExponentialSleepDuration = 3;
const int exponentialRetryBaseInMilliseconds = 2_000;
const int constantTimeSleepDurationInMilliseconds = 5_000;
// ACT
var result = new CappedExponentialRetryThenConstantTimeSleeps(
numberOfRetriesWithExponentialSleepDuration,
exponentialRetryBaseInMilliseconds,
constantTimeSleepDurationInMilliseconds);
// ASSERT
Assert.AreEqual(constantTimeSleepDurationInMilliseconds, result.ConstantTimeSleepDurationInMilliseconds);
}
public void Ctor_Creates_New_Instance()
{
// ARRANGE
const int numberOfRetriesWithExponentialSleepDuration = 3;
const int exponentialRetryBaseInMilliseconds = 2_000;
const int constantTimeSleepDurationInMilliseconds = 5_000;
// ACT
var result = new CappedExponentialRetryThenConstantTimeSleeps(
numberOfRetriesWithExponentialSleepDuration,
exponentialRetryBaseInMilliseconds,
constantTimeSleepDurationInMilliseconds);
// ASSERT
Assert.IsNotNull(result);
}
public void ComputeSleepDuration_Applies_ConstantTimeSleepDurationInMilliseconds_When_Retry_Count_Is_Greater_Than_NumberOfRetriesWithExponentialSleepDuration_Plus_One()
{
// ARRANGE
const int numberOfRetriesWithExponentialSleepDuration = 3;
const int exponentialRetryBaseInMilliseconds = 2_000;
const int constantTimeSleepDurationInMilliseconds = 5_000;
var target = new CappedExponentialRetryThenConstantTimeSleeps(
numberOfRetriesWithExponentialSleepDuration,
exponentialRetryBaseInMilliseconds,
constantTimeSleepDurationInMilliseconds);
// ACT
const int retryCount = numberOfRetriesWithExponentialSleepDuration + 2;
var result = target.ComputeSleepDuration(retryCount);
// ASSERT
var expectedSleepDuration = TimeSpan.FromMilliseconds(constantTimeSleepDurationInMilliseconds);
Assert.AreEqual(expectedSleepDuration, result);
}
public void ComputeSleepDuration_Throws_ArgumentOutOfRangeException_When_RetryCount_Is_Not_Positive_Integer(
int retryCount)
{
// ARRANGE
const int numberOfRetriesWithExponentialSleepDuration = 3;
const int exponentialRetryBaseInMilliseconds = 2_000;
const int constantTimeSleepDurationInMilliseconds = 5_000;
var target = new CappedExponentialRetryThenConstantTimeSleeps(
numberOfRetriesWithExponentialSleepDuration,
exponentialRetryBaseInMilliseconds,
constantTimeSleepDurationInMilliseconds);
// ACT
var exception = Assert.Throws <ArgumentOutOfRangeException>(
() => target.ComputeSleepDuration(retryCount)
);
// ASSERT
Assert.IsNotNull(exception);
Assert.AreEqual("retryCount", exception.ParamName);
}
public void ComputeSleepDuration_Applies_Number_Of_Exponential_Retries_Equal_To_NumberOfRetriesWithExponentialSleepDuration()
{
// ARRANGE
const int numberOfRetriesWithExponentialSleepDuration = 3;
const int exponentialRetryBaseInMilliseconds = 2_000;
const int constantTimeSleepDurationInMilliseconds = 5_000;
var target = new CappedExponentialRetryThenConstantTimeSleeps(
numberOfRetriesWithExponentialSleepDuration,
exponentialRetryBaseInMilliseconds,
constantTimeSleepDurationInMilliseconds);
// ACT
const int retryCount = numberOfRetriesWithExponentialSleepDuration;
var result = target.ComputeSleepDuration(retryCount);
// ASSERT
var expectedSleepDuration = TimeSpan.FromMilliseconds(
Math.Pow(exponentialRetryBaseInMilliseconds, retryCount - 1)
);
Assert.AreEqual(expectedSleepDuration, result);
}
