public async Task ItShouldRetryVoidActionsUpToTheMaximumtryCount()
{
int tryCount = 0;
Func <Task> action = () =>
{
++tryCount;
throw SqlExceptionMocker.MakeSqlException(
FifthweekRetryOnTransientErrorHandler.SqlDeadlockErrorCode);
};
Exception exception = null;
try
{
await this.target.HandleAsync(action);
}
catch (Exception t)
{
exception = t;
}
Assert.IsNotNull(exception);
Assert.IsInstanceOfType(exception, typeof(RetryLimitExceededException));
Assert.AreEqual(FifthweekRetryOnTransientErrorHandler.DefaultMaxRetryCount + 1, tryCount);
Assert.AreEqual(FifthweekRetryOnTransientErrorHandler.DefaultMaxRetryCount, this.target.RetryCount);
}
public async Task ItShouldRetryActionsUntilNonTransientFailure()
{
int tryCount = 0;
Func <Task <int> > action = () =>
{
++tryCount;
if (tryCount <= FifthweekRetryOnTransientErrorHandler.DefaultMaxRetryCount)
{
throw SqlExceptionMocker.MakeSqlException(
FifthweekRetryOnTransientErrorHandler.SqlDeadlockErrorCode);
}
else
{
this.transientErrorDetectionStrategy.Setup(v => v.IsTransient(It.IsAny <Exception>())).Returns(false);
throw new DivideByZeroException();
}
};
Exception exception = null;
try
{
await this.target.HandleAsync(action);
}
catch (Exception t)
{
exception = t;
}
Assert.IsNotNull(exception);
Assert.IsInstanceOfType(exception, typeof(DivideByZeroException));
Assert.AreEqual(FifthweekRetryOnTransientErrorHandler.DefaultMaxRetryCount + 1, tryCount);
Assert.AreEqual(FifthweekRetryOnTransientErrorHandler.DefaultMaxRetryCount, this.target.RetryCount);
}
public async Task ItShouldRetryOnNestedSqlError()
{
Assert.IsTrue(this.target.IsTransient(new InvalidOperationException(
"blah",
new DivideByZeroException(
"blah",
SqlExceptionMocker.MakeSqlException(
FifthweekRetryOnTransientErrorHandler.SqlTimeoutErrorCode)))));
}
public async Task ItShouldRetryOnNestedAggregateSqlError()
{
Assert.IsTrue(this.target.IsTransient(new AggregateException(
"blah",
new DivideByZeroException(
"blah",
new Exception("Dead end")),
new DivideByZeroException(
"blah",
new AggregateException(
"blah",
new ExternalErrorException("blah"),
new Exception(
"blah",
SqlExceptionMocker.MakeSqlException(FifthweekRetryOnTransientErrorHandler.SqlTimeoutErrorCode)),
new EntryPointNotFoundException("blah"))))));
}
public async Task ItShouldRetryNonVoidActionsUntilSuccess()
{
int tryCount = 0;
Func <Task <int> > action = () =>
{
++tryCount;
if (tryCount <= FifthweekRetryOnTransientErrorHandler.DefaultMaxRetryCount)
{
throw SqlExceptionMocker.MakeSqlException(
FifthweekRetryOnTransientErrorHandler.SqlDeadlockErrorCode);
}
return(Task.FromResult(0));
};
await this.target.HandleAsync(action);
Assert.AreEqual(FifthweekRetryOnTransientErrorHandler.DefaultMaxRetryCount + 1, tryCount);
Assert.AreEqual(FifthweekRetryOnTransientErrorHandler.DefaultMaxRetryCount, this.target.RetryCount);
}
public async Task ItShouldRetryOnSqlAzureTransientError2()
{
Assert.IsTrue(this.target.IsTransient(SqlExceptionMocker.MakeSqlException(
40143)));
}
public async Task ItShouldRetryOnSqlTimeout()
{
Assert.IsTrue(this.target.IsTransient(SqlExceptionMocker.MakeSqlException(
FifthweekRetryOnTransientErrorHandler.SqlTimeoutErrorCode)));
}
public async Task ItShouldNotRetryOnUnsupportedSqlExceptionErrorNumbers()
{
Assert.IsFalse(this.target.IsTransient(SqlExceptionMocker.MakeSqlException(0)));
}