public void Dispose_WithAsyncDisposable_ThrowsException()
{
// Arrange
var container = ContainerFactory.New();
container.Options.DefaultScopedLifestyle = new AsyncScopedLifestyle();
container.Register <AsyncDisposable>(Lifestyle.Scoped);
var scope = AsyncScopedLifestyle.BeginScope(container);
var plugin = container.GetInstance <AsyncDisposable>();
// Act
Action action = () => scope.Dispose();
// Assert
AssertThat.ThrowsWithExceptionMessageContains <InvalidOperationException>(
"AsyncDisposable only implements IAsyncDisposable, but not IDisposable. Make sure to call " +
"Scope.DisposeScopeAsync() instead of Scope.Dispose().",
action);
}
public async Task DisposeScopeAsync_WithSyncAndAsyncDisposableScopedInstanceDelegateRegistration_DisposesThatInstanceOnlyAsynchronously()
{
// Arrange
var container = ContainerFactory.New();
container.Options.DefaultScopedLifestyle = new AsyncScopedLifestyle();
container.Register <IFoo>(() => new SyncAsyncDisposable(), Lifestyle.Scoped);
var scope = AsyncScopedLifestyle.BeginScope(container);
var plugin = container.GetInstance <IFoo>() as SyncAsyncDisposable;
// Act
await scope.DisposeScopeAsync();
// Assert
Assert.IsTrue(plugin.AsyncDisposed);
Assert.IsFalse(plugin.SyncDisposed,
"In case both interfaces are implemented, only DisposeAsync should be called. " +
"The C# compiler acts this way as well.");
}
public void Dispose_WithSyncAsyncDisposableScopedRegistration_DisposesThatInstance()
{
// Arrange
var container = ContainerFactory.New();
container.Options.DefaultScopedLifestyle = new AsyncScopedLifestyle();
container.Register <SyncAsyncDisposable>(Lifestyle.Scoped);
var scope = AsyncScopedLifestyle.BeginScope(container);
var plugin = container.GetInstance <SyncAsyncDisposable>();
// Act
// Because SyncAsyncDisposable implements IDisposable, the sync dispose call should succeed.
scope.Dispose();
// Assert
Assert.IsTrue(plugin.SyncDisposed);
Assert.IsFalse(plugin.AsyncDisposed,
"DisposeAsync was called, but this involves blocking which could cause a deadlock. A no-no.");
}
public void GetAllInstances_OnUnregisteredType_TriggersUnregisteredTypeResolution()
{
// Arrange
bool resolveUnregisteredTypeWasTriggered = false;
var container = ContainerFactory.New();
container.ResolveUnregisteredType += (s, e) =>
{
if (e.UnregisteredServiceType == typeof(IEnumerable <Exception>))
{
resolveUnregisteredTypeWasTriggered = true;
}
};
// Act
Action action = () => container.GetAllInstances <Exception>();
// Assert
AssertThat.Throws <ActivationException>(action);
Assert.IsTrue(resolveUnregisteredTypeWasTriggered);
}
public void GetInstance_OnUnregisteredCollection_TriggersUnregisteredTypeResolution()
{
// Arrange
bool resolveUnregisteredTypeWasTriggered = false;
var container = ContainerFactory.New();
container.ResolveUnregisteredType += (s, e) =>
{
if (e.UnregisteredServiceType == typeof(IEnumerable <Exception>))
{
resolveUnregisteredTypeWasTriggered = true;
e.Register(() => Enumerable.Empty <Exception>());
}
};
// Act
container.GetInstance <IEnumerable <Exception> >();
// Assert
Assert.IsTrue(resolveUnregisteredTypeWasTriggered);
}
public void GetInstance_RequestingOnRootTypeDependingIndirectlyOnItselfThroughDelegateRegistration_Throws()
{
// Arrange
var container = ContainerFactory.New();
container.Register <ComponentDependingOn <IOne> >();
container.Register <IOne>(() => new One(container.GetInstance <ITwo>()));
container.Register <ITwo>(() => new Two(container.GetInstance <IOne>()));
try
{
// Act
container.GetInstance <ComponentDependingOn <IOne> >();
// Assert
Assert.Fail("An exception was expected, because A depends indirectly on itself.");
}
catch (ActivationException)
{
// This exception is expected.
}
}
public void GetInstance_EventRegisteredForNonRootTypeThatThrowsException_ThrowsAnDescriptiveException()
{
// Arrange
var container = ContainerFactory.New();
container.Register <UserServiceBase, RealUserService>();
container.ResolveUnregisteredType += (s, e) =>
{
e.Register(() => { throw new Exception(); });
};
// Act
Action action = () => container.GetInstance <UserServiceBase>();
// Assert
AssertThat.ThrowsWithExceptionMessageContains <Exception>(
"The delegate that was registered for service type IUserRepository using the " +
"UnregisteredTypeEventArgs.Register(Func<object>) method threw an exception",
action,
"Exception message was not descriptive.");
}
public void GetInstance_RequestingSingletonTypeDependingIndirectlyOnItselfViaSingletonType_Throws()
{
// Arrange
var container = ContainerFactory.New();
// Note: A depends on B which depends on A.
container.Register <A>(Lifestyle.Singleton);
container.Register <B>(Lifestyle.Singleton);
try
{
// Act
container.GetInstance <A>();
// Assert
Assert.Fail("An exception was expected, because A depends indirectly on itself.");
}
catch (ActivationException)
{
// This exception is expected.
}
}
public void GetInstance_RequestingSingletonTypeDependingIndirectlyOnItselfThroughInterfaces_Throws()
{
// Arrange
var container = ContainerFactory.New();
// One depends on ITwo and Two depends on IOne.
container.Register <IOne, One>(Lifestyle.Singleton);
container.Register <ITwo, Two>(Lifestyle.Singleton);
try
{
// Act
container.GetInstance <IOne>();
// Assert
Assert.Fail("An exception was expected, because A depends indirectly on itself.");
}
catch (ActivationException)
{
// This exception is expected.
}
}
public void GetInstance_MultipleRegisteredInitializers_RunsInitializersInOrderOfRegistration()
{
// Arrange
int index = 1;
int initializer1Index = 0;
int initializer2Index = 0;
int initializer3Index = 0;
var container = ContainerFactory.New();
container.RegisterInitializer <ICommand>(c => { initializer1Index = index++; });
container.RegisterInitializer <ConcreteCommand>(c => { initializer3Index = index++; });
container.RegisterInitializer <CommandBase>(c => { initializer2Index = index++; });
// Act
container.GetInstance <ConcreteCommand>();
// Assert
Assert.AreEqual(1, initializer1Index, "ICommand initializer did not run in expected order.");
Assert.AreEqual(2, initializer3Index, "ConcreteCommand initializer did not run in expected order.");
Assert.AreEqual(3, initializer2Index, "CommandBase initializer did not run in expected order.");
}
public void InitializeInstance_WithPropertyInjection_InjectsProperty()
{
// Arrange
var instanceToInitialize = new ServiceWithProperty <RealTimeProvider>();
Assert.IsNull(instanceToInitialize.Dependency, "Test setup failed.");
var container = ContainerFactory.New();
container.Options.PropertySelectionBehavior = new PredicatePropertySelectionBehavior
{
Predicate = property => property.Name == "Dependency"
};
var registration = container.GetRegistration(instanceToInitialize.GetType()).Registration;
// Act
registration.InitializeInstance(instanceToInitialize);
// Assert
Assert.IsNotNull(instanceToInitialize.Dependency);
}
public void Register_AbstractTypeWithSinglePublicConstructor_ThrowsExpectedException()
{
// Arrange
string expectedMessage = @"
The given type RegisterConcreteTests.AbstractTypeWithSinglePublicConstructor is not a concrete
type. Please use one of the other overloads to register this type.
".TrimInside();
var container = ContainerFactory.New();
try
{
// Act
container.Register<AbstractTypeWithSinglePublicConstructor>();
Assert.Fail("The abstract type was not expected to be registered successfully.");
}
catch (ArgumentException ex)
{
AssertThat.ExceptionMessageContains(expectedMessage, ex);
}
}
public void GetInstance_SubTypeRegisteredWithFuncReturningNull_ThrowsExpectedException()
{
// Arrange
var container = ContainerFactory.New();
container.Register <IUserRepository>(() => null);
try
{
// Act
container.GetInstance <RealUserService>();
// Assert
Assert.Fail("Exception expected.");
}
catch (ActivationException ex)
{
Assert.IsTrue(ex.Message.Contains(
"The registered delegate for type IUserRepository returned null."),
"Actual: " + ex.Message);
}
}
public void GetInstance_LambdaThatCallsBackIntoContainerExecutedFromScopeResolve_ResolvesTheInstanceAsScoped()
{
// Arrange
var container = ContainerFactory.New();
container.Options.DefaultScopedLifestyle = ScopedLifestyle.Flowing;
// Calling back into the container to get a scoped instance, from within an instanceCreator lambda,
// should work, in case the the root object is resolved from a scope.
container.Register <ILogger>(() => container.GetInstance <NullLogger>());
container.Register <NullLogger>(Lifestyle.Scoped);
container.Register <ServiceDependingOn <ILogger> >();
var scope = new Scope(container);
// Act
var s1 = scope.GetInstance <ServiceDependingOn <ILogger> >();
var s2 = scope.GetInstance <ServiceDependingOn <ILogger> >();
// Assert
Assert.AreSame(s1.Dependency, s2.Dependency, "Logger was expected to be scoped.");
}
public void RegisterTypes_SuppliedWithOpenGenericType_FailsWithExpectedException()
{
// Arrange
var container = ContainerFactory.New();
Type[] types = new[] { typeof(GenericHandler <>) };
// Act
Action action = () => container.Register(typeof(IBatchCommandHandler <>), types);
// Assert
AssertThat.ThrowsWithParamName("implementationTypes", action);
AssertThat.ThrowsWithExceptionMessageContains <ArgumentException>(@"
The supplied list of types contains an open-generic type, but this method is unable to
handle open-generic implementations—it can only map a single implementation to
closed-generic service types. You must register this open-generic type separately using
the Register(Type, Type) overload. Alternatively, try using Container.Collection.Register
instead, if you expect to have multiple implementations per closed-generic service type
and want to inject a collection of them into consumers."
.TrimInside(),
action);
}
public void RegisterOpenGeneric_PredicateContext_ImplementationTypeIsClosedImplentation()
{
bool called = false;
// Arrange
var container = ContainerFactory.New();
container.RegisterConditional(typeof(IOpenGenericWithPredicate <>), typeof(OpenGenericWithPredicate1 <>),
Lifestyle.Transient, c =>
{
Assert.IsFalse(c.ImplementationType.ContainsGenericParameter(), "ImplementationType should be a closed type");
called = true;
return(true);
});
// Act
var result = container.GetInstance <IOpenGenericWithPredicate <int> >();
// Assert
Assert.IsTrue(called, "Predicate was not called");
}
public void GetInstance_GenericConditionalRegistrationWithFallbackBehaviorRegisteredBeforeClosed_Throws()
{
// Arrange
var container = ContainerFactory.New();
// Conditional fallback before the closed registration.
container.RegisterConditional(typeof(IGeneric <>), typeof(GenericType <>), c => !c.Handled);
container.Register <IGeneric <int>, IntGenericType>();
// Act
Action action = () => container.GetInstance <IGeneric <int> >();
// Assert
AssertThat.ThrowsWithExceptionMessageContains <ActivationException>(
"Multiple applicable registrations found for IGeneric<Int32>",
action);
AssertThat.ThrowsWithExceptionMessageContains <ActivationException>(
"make the fallback registration last and check the Handled property in the predicate",
action);
}
public void GetInstance_MultipleApplicableConditionalNonGenericRegistrations_ThrowsExpectedException()
{
// Arrange
var container = ContainerFactory.New();
container.RegisterConditional(typeof(ILogger), typeof(NullLogger), Lifestyle.Singleton, c => true);
container.RegisterConditional(typeof(ILogger), typeof(ConsoleLogger), Lifestyle.Singleton, c => true);
// Act
Action action = () => container.GetInstance <ServiceWithDependency <ILogger> >();
// Assert
AssertThat.ThrowsWithExceptionMessageContains <ActivationException>(@"
Multiple applicable registrations found for ILogger. The applicable registrations are
(1) the conditional registration for ILogger using NullLogger and
(2) the conditional registration for ILogger using ConsoleLogger.
If your goal is to make one registration a fallback in case another registration is not
applicable, make the fallback registration last and check the Handled property in the
predicate."
.TrimInside(),
action);
}
public void RegisterConditionalGeneric_ForConstraintTypeAfterAnUnconditionalConstraintRegistrationForTheSameImplementationTypeHasBeenMade_ThrowsAnExpressiveException()
{
// Arrange
var container = ContainerFactory.New();
container.Register(typeof(IGeneric <>), typeof(GenericClassType <>));
// Act
// Although we skip checks for types with type constraints, these two registrations use the same
// implementation type and this will always cause overlap.
Action action = () => container.RegisterConditional(typeof(IGeneric <>), typeof(GenericClassType <>), c => true);
// Assert
AssertThat.ThrowsWithExceptionMessageContains <InvalidOperationException>(@"
There is already a registration for IGeneric<T> (with implementation GenericClassType<TClass>)
that overlaps with the registration for GenericClassType<TClass> that you are trying to make.
This new registration would cause ambiguity, because both registrations would be used for the
same closed service types. Either remove one of the registrations or make them both
conditional."
.TrimInside(),
action);
}
public void GetInstance_DelegateReturningNullRegisteredUsingRegisterSingleByFuncOfNonRootType_ThrowsActivationExceptionWithExpectedExceptionMessage()
{
// Arrange
var container = ContainerFactory.New();
container.RegisterSingle <IUserRepository>(() => null);
try
{
// Act
container.GetInstance <RealUserService>();
// Assert
Assert.Fail("The GetInstance method was expected to fail, because of the faulty registration.");
}
catch (ActivationException ex)
{
string expectedMessage = "The registered delegate for type IUserRepository returned null.";
AssertThat.ExceptionMessageContains(expectedMessage, ex);
}
}
public void GetInstance_UnregisteredConcreteTypeWithInterceptor_CallsEventOnce()
{
// Arrange
int expectedCallCount = 1;
int actualCallCount = 0;
var container = ContainerFactory.New();
container.ExpressionBuilt += (sender, e) =>
{
if (e.RegisteredServiceType == typeof(SqlUserRepository))
{
actualCallCount++;
}
};
// Act
container.GetInstance <SqlUserRepository>();
// Assert
Assert.AreEqual(expectedCallCount, actualCallCount);
}
public void GetInstance_ResolvingScopedDependencyDirectlyFromScope_ResolvesTheInstanceAsScoped()
{
// Arrange
var container = ContainerFactory.New();
// We need a 'dummy' scoped lifestyle to be able to use Lifestyle.Scoped
container.Options.DefaultScopedLifestyle = ScopedLifestyle.Flowing;
container.Register <ILogger, NullLogger>(Lifestyle.Scoped);
var scope1 = new Scope(container);
var scope2 = new Scope(container);
// Act
var s1 = scope1.GetInstance <ServiceDependingOn <ILogger> >();
var s2 = scope1.GetInstance <ServiceDependingOn <ILogger> >();
var s3 = scope2.GetInstance <ServiceDependingOn <ILogger> >();
// Assert
Assert.AreSame(s1.Dependency, s2.Dependency, "Logger was expected to be scoped but was transient.");
Assert.AreNotSame(s3.Dependency, s2.Dependency, "Logger was expected to be scoped but was singleton.");
}
public void GetInstance_CalledForDecoratedUncontrolledCollection_CallsEventForBothTheInstanceAndTheDecorator()
{
// Arrange
var actualContexts = new List <InstanceInitializationData>();
var container = ContainerFactory.New();
// Container uncontrolled collection
IEnumerable <ICommandHandler <RealCommand> > handlers = new ICommandHandler <RealCommand>[]
{
new StubCommandHandler(),
};
container.Collection.Register <ICommandHandler <RealCommand> >(handlers);
container.RegisterInitializer(actualContexts.Add, TruePredicate);
container.RegisterDecorator(typeof(ICommandHandler <>), typeof(RealCommandHandlerDecorator));
// Act
var producer = container.GetRegistration(typeof(IEnumerable <ICommandHandler <RealCommand> >));
var decorator = container.GetAllInstances <ICommandHandler <RealCommand> >().Single()
as RealCommandHandlerDecorator;
// Assert
Assert.AreEqual(2, actualContexts.Count, "Two event args were expected.");
Assert.AreSame(producer.Registration, actualContexts.First().Context.Registration);
Assert.AreEqual(
typeof(IEnumerable <ICommandHandler <RealCommand> >),
actualContexts.First().Context.Registration.ImplementationType);
Assert.AreEqual(
typeof(RealCommandHandlerDecorator),
actualContexts.Second().Context.Registration.ImplementationType);
}
public void GetInstance_ExpressionBuildingChangedExpressionInAnIncompatibleWay_ThrowsExpectedException()
{
// Arrange
var container = ContainerFactory.New();
container.Register <IUserRepository, SqlUserRepository>(Lifestyle.Singleton);
// Act
container.ExpressionBuilding += (s, e) =>
e.Expression = Expression.Constant("some string", typeof(string));
Action action = () => container.GetInstance(typeof(IUserRepository));
// Assert
AssertThat.ThrowsWithExceptionMessageContains <ActivationException>(@"
You are trying to set the ExpressionBuildingEventArgs.Expression property with an Expression
instance that has a type of String. The expression type however should be a
SqlUserRepository (or a sub type). You can't change the type of the expression using the
ExpressionBuilding event. If you need to change the implementation, please use the
ExpressionBuilt event instead."
.TrimInside(),
action);
}
public void GetInstance_CalledSimultaneouslyToRequestTheSameType_ShouldNotTriggerTheRecursionProtection()
{
// Arrange
var container = ContainerFactory.New();
container.Register <IUserRepository>(() =>
{
// We wait a bit here to make sure all three threads run this method simultaneously.
Thread.Sleep(200);
return(new SqlUserRepository());
});
// Act
var thread2 = ThreadWrapper.StartNew(() => container.GetInstance <IUserRepository>());
var thread3 = ThreadWrapper.StartNew(() => container.GetInstance <IUserRepository>());
// Also run on this thread.
container.GetInstance <IUserRepository>();
// Assert
Assert_FinishedWithoutExceptions(thread2);
Assert_FinishedWithoutExceptions(thread3);
}
public void GetRegistration_WhenTheRegistrationIsUnknownButCanBeCreatedUsingUnregTypeRes_DoesNotLockTheContainer()
{
// Arrange
var container = ContainerFactory.New();
// Not sure whether it would be wise to always lock the container when an unregistered event handler is fired.
container.ResolveUnregisteredType += (s, e) =>
{
e.Register(Lifestyle.Singleton.CreateRegistration <RealTimeProvider>(container));
};
// Act
var prod = container.GetRegistration(typeof(ITimeProvider));
Assert.IsNotNull(prod, "Test setup failed.");
// Arrange
Assert.IsTrue(container.IsLocked, @"
Whenever a not explicitly made registration can be returned using unregistered type resolution,
the container needs to be locked, changing the container might invalidate the registration.
For instance, adding unregistered type resolution events later, might cause a different registration to
be returned when GetRegistration is called again.");
}
public void Validate_InValidRegisterSingleByFuncRegistration_ThrowsExpectedExceptionMessage()
{
// Arrange
string expectedMessage = "The registered delegate for type IUserRepository returned null";
var container = ContainerFactory.New();
Func <IUserRepository> invalidDelegate = () => null;
container.RegisterSingle <IUserRepository>(invalidDelegate);
try
{
// Act
container.Verify();
// Arrange
Assert.Fail("Exception expected.");
}
catch (InvalidOperationException ex)
{
AssertThat.StringContains(expectedMessage, ex.Message);
}
}
public void Verify_ResolvingACollectionOfSingletonsBeforeAndAfterCallingVerify_ShouldStillYieldTheSameInstance()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register(typeof(IEventHandler <>), new Type[]
{
typeof(StructEventHandler),
});
container.Collection.Append(typeof(IEventHandler <>),
Lifestyle.Singleton.CreateRegistration <AuditableEventEventHandler>(container));
var handler = container.GetAllInstances <IEventHandler <AuditableEvent> >().Single();
container.Verify();
// Act
var handler2 = container.GetAllInstances <IEventHandler <AuditableEvent> >().Single();
// Assert
Assert.AreSame(handler, handler2);
}
public void Dispose_MultipleDisposableSingletons_DisposesThemInOppositeOrderOfCreation()
{
// Arrange
var instances = new List <DisposableService>();
var container = ContainerFactory.New();
container.Register <IService, DisposableService>(Lifestyle.Singleton);
container.Register <DisposableService>(Lifestyle.Singleton);
var instance1 = container.GetInstance <DisposableService>();
var instance2 = container.GetInstance <IService>() as DisposableService;
instance1.Disposing += instances.Add;
instance2.Disposing += instances.Add;
// Act
container.Dispose();
// Assert
Assert.AreSame(instance2, instances[0], "Instances are expected to be disposed in opposite order.");
Assert.AreSame(instance1, instances[1], "Instances are expected to be disposed in opposite order.");
}
public void GetInstance_WithUnregisteredType_InvokesEvent()
{
// Arrange
bool eventCalled = false;
var container = ContainerFactory.New();
container.ResolveUnregisteredType += (s, e) => { eventCalled = true; };
try
{
// Act
container.GetInstance <IUserRepository>();
// Assert
Assert.Fail("Exception was expected.");
}
catch (ActivationException)
{
Assert.IsTrue(eventCalled, "Before throwing an exception, the container must try to resolve " +
"a missing type by calling the ResolveUnregisteredType event.");
}
}
