public void Can_perform_lock()
{
var key = new CacheKey("Nop.Task");
var expiration = TimeSpan.FromMinutes(2);
var actionCount = 0;
var action = new Action(() =>
{
_cacheManager.IsSet(key).Should().BeTrue();
_cacheManager.PerformActionWithLock(key.Key, expiration,
() => Assert.Fail("Action in progress"))
.Should().BeFalse();
if (++actionCount % 2 == 0)
{
throw new ApplicationException("Alternating actions fail");
}
});
_cacheManager.PerformActionWithLock(key.Key, expiration, action)
.Should().BeTrue();
actionCount.Should().Be(1);
_cacheManager.Invoking(a => a.PerformActionWithLock(key.Key, expiration, action)).Should().Throw <ApplicationException>();
actionCount.Should().Be(2);
_cacheManager.PerformActionWithLock(key.Key, expiration, action)
.Should().BeTrue();
actionCount.Should().Be(3);
}