public void GetCircuitBreaker_ReturnsSameObjectForSameKey()
{
// Arrange
var mockMetricEvents = new Mock <IMetricEvents>();
var mockBreakerConfig = new Mock <IFailurePercentageCircuitBreakerConfig>(MockBehavior.Strict);
var mockLogFactory = new Mock <IMjolnirLogFactory>(MockBehavior.Strict);
mockLogFactory.Setup(m => m.CreateLog <BulkheadFactory>()).Returns(new DefaultMjolnirLog <BulkheadFactory>());
mockLogFactory.Setup(m => m.CreateLog <FailurePercentageCircuitBreaker>()).Returns(new DefaultMjolnirLog <FailurePercentageCircuitBreaker>());
mockLogFactory.Setup(m => m.CreateLog <ResettingNumbersBucket>()).Returns(new DefaultMjolnirLog <ResettingNumbersBucket>());
var groupKey = AnyGroupKey;
var factory = new CircuitBreakerFactory(mockMetricEvents.Object, mockBreakerConfig.Object, mockLogFactory.Object);
// Act
var firstBreaker = factory.GetCircuitBreaker(groupKey);
var secondBreaker = factory.GetCircuitBreaker(groupKey);
// Assert
Assert.True(firstBreaker == secondBreaker); // Reference should be equal for same object.
Assert.True(firstBreaker.Metrics == secondBreaker.Metrics); // Inner metrics instances should also be the same.
}
public void Construct_InitializesConfigGauge_GaugeFiresForOneBulkhead()
{
// Arrange
var key = AnyString;
var groupKey = GroupKey.Named(key);
var expectedMinimumOperations = AnyPositiveInt;
var expectedWindowMillis = AnyPositiveInt;
var expectedThresholdPercent = AnyPositiveInt;
var expectedTrippedDurationMillis = AnyPositiveInt;
var expectedForceTripped = false;
var expectedForceFixed = false;
var mockMetricEvents = new Mock <IMetricEvents>();
var mockBreakerConfig = new Mock <IFailurePercentageCircuitBreakerConfig>(MockBehavior.Strict);
mockBreakerConfig.Setup(m => m.GetMinimumOperations(groupKey)).Returns(expectedMinimumOperations);
mockBreakerConfig.Setup(m => m.GetWindowMillis(groupKey)).Returns(expectedWindowMillis);
mockBreakerConfig.Setup(m => m.GetThresholdPercentage(groupKey)).Returns(expectedThresholdPercent);
mockBreakerConfig.Setup(m => m.GetTrippedDurationMillis(groupKey)).Returns(expectedTrippedDurationMillis);
mockBreakerConfig.Setup(m => m.GetForceTripped(groupKey)).Returns(expectedForceTripped);
mockBreakerConfig.Setup(m => m.GetForceFixed(groupKey)).Returns(expectedForceFixed);
var mockLogFactory = new Mock <IMjolnirLogFactory>(MockBehavior.Strict);
mockLogFactory.Setup(m => m.CreateLog <FailurePercentageCircuitBreaker>()).Returns(new DefaultMjolnirLog <FailurePercentageCircuitBreaker>());
mockLogFactory.Setup(m => m.CreateLog <ResettingNumbersBucket>()).Returns(new DefaultMjolnirLog <ResettingNumbersBucket>());
// Act + Assert
var factory = new CircuitBreakerFactory(mockMetricEvents.Object, mockBreakerConfig.Object, mockLogFactory.Object);
// Gauge won't fire immediately, it'll start one second after construction
mockMetricEvents.Verify(m => m.BreakerGauge(It.IsAny <string>(), It.IsAny <long>(), It.IsAny <long>(), It.IsAny <int>(), It.IsAny <int>(), It.IsAny <bool>(), It.IsAny <bool>(), It.IsAny <bool>(), It.IsAny <long>(), It.IsAny <long>()), Times.Never);
// Add two breakers
var firstBreaker = factory.GetCircuitBreaker(groupKey);
Thread.Sleep(TimeSpan.FromMilliseconds(1500));
mockMetricEvents.Verify(m => m.BreakerGauge(key, expectedMinimumOperations, expectedWindowMillis, expectedThresholdPercent, expectedTrippedDurationMillis, expectedForceTripped, expectedForceFixed, false, 0, 0));
}