public void Covariant_Enumerable_ShouldContainOneMatchBecauseOptionDisablesEnumerableCovarianceForThatEnumerable()
{
// Arrange
var targets = new TargetContainer();
targets.SetOption <Options.EnableEnumerableCovariance, BaseClass>(false);
var baseTarget = Target.ForType <BaseClass>();
var childTarget = Target.ForType <BaseClassChild>();
var grandChildTarget = Target.ForType <BaseClassGrandchild>();
var nestedbaseTarget = Target.ForType <Covariant <BaseClass> >();
var nestedchildTarget = Target.ForType <Covariant <BaseClassChild> >();
var nestedgrandChildTarget = Target.ForType <Covariant <BaseClassGrandchild> >();
targets.Register(baseTarget);
targets.Register(childTarget);
targets.Register(grandChildTarget);
targets.Register(nestedbaseTarget, typeof(ICovariant <BaseClass>));
targets.Register(nestedchildTarget, typeof(ICovariant <BaseClassChild>));
targets.Register(nestedgrandChildTarget, typeof(ICovariant <BaseClassGrandchild>));
// Act
var enumerableTarget = Assert.IsType <EnumerableTarget>(targets.Fetch(typeof(IEnumerable <BaseClass>)));
var nestedEnumerableTarget = Assert.IsType <EnumerableTarget>(targets.Fetch(typeof(IEnumerable <ICovariant <BaseClass> >)));
// Assert
Assert.Equal(new[] { baseTarget.Id }, enumerableTarget.Targets.Select(t => t.Id));
Assert.Equal(new[] { nestedbaseTarget.Id, nestedchildTarget.Id, nestedgrandChildTarget.Id }, nestedEnumerableTarget.Targets.Select(t => t.Id));
}
public void ShouldNotAddRegistrationsIfDisabledByOption()
{
var configs = new CombinedTargetContainerConfig
{
Configuration.InjectLists.Instance,
Configuration.Configure.Option <Options.EnableListInjection>(false)
};
var targets = new TargetContainer(configs);
Assert.Null(targets.Fetch(typeof(List <string>)));
Assert.Null(targets.Fetch(typeof(IList <string>)));
}
public void ShouldSupportTwoRegistrations()
{
ITargetContainer targets = new TargetContainer();
var simpleType = new NoCtor();
ITarget target1 = Target.ForObject("hello world");
ITarget target2 = Target.ForObject(new NoCtor());
targets.Register(target1);
targets.Register(target2);
Assert.Same(target1, targets.Fetch(typeof(string)));
Assert.Same(target2, targets.Fetch(typeof(NoCtor)));
}
public void ShouldSupportRegisteringOpenGenericAndFetchingAsClosed()
{
// Arrange
ITargetContainer targets = new TargetContainer();
var target = Target.ForType(typeof(Generic <>));
targets.Register(target, typeof(IGeneric <>));
// Act
var fetched = targets.Fetch(typeof(IGeneric <>));
var fetchedClosed = targets.Fetch(typeof(IGeneric <int>));
// Assert
Assert.Same(target, fetched);
Assert.Same(target, fetchedClosed);
}
public void ShouldRegisterAlias()
{
TargetContainer targets = new TargetContainer();
targets.RegisterAlias <object, string>();
Assert.NotNull(targets.Fetch(typeof(object)));
}
public void Projection_ShouldAutoProject_SpecificImplementationType()
{
// Projecting a different implementation type from the type that we're projecting to
// Arrange
var targets = new TargetContainer();
targets.RegisterType <From1>();
targets.RegisterType <From2>();
targets.RegisterProjection <From, ITo, To>();
// Act
var result = targets.Fetch(typeof(IEnumerable <ITo>));
// Assert
var enumTarget = Assert.IsType <EnumerableTarget>(result);
Assert.Collection(enumTarget, new Action <ITarget>[] {
t => {
var projTarget = Assert.IsType <ProjectionTarget>(t);
Assert.IsType <ConstructorTarget>(projTarget.OutputTarget);
Assert.Equal(typeof(To), projTarget.OutputTarget.DeclaredType);
Assert.Equal(typeof(From1), projTarget.InputTarget.DeclaredType);
},
t => {
var projTarget = Assert.IsType <ProjectionTarget>(t);
Assert.IsType <ConstructorTarget>(projTarget.OutputTarget);
Assert.Equal(typeof(To), projTarget.OutputTarget.DeclaredType);
Assert.Equal(typeof(From2), projTarget.InputTarget.DeclaredType);
}
});
}
public void Projection_ShouldProject_FromRegistration()
{
// This time, projecting to an interface for which we have one registration
// Demonstrates that the container will use a specific registration instead
// of auto-binding the implementation type.
// Arrange
var targets = new TargetContainer();
targets.RegisterType <From1>();
targets.RegisterType <From2>();
var expectedTarget = Target.ForType <To>();
targets.Register(expectedTarget, typeof(ITo));
targets.RegisterProjection <From, ITo>();
// Act
var result = targets.Fetch(typeof(IEnumerable <ITo>));
// Assert
var enumTarget = Assert.IsType <EnumerableTarget>(result);
Assert.Collection(enumTarget, new Action <ITarget>[] {
t => {
var projTarget = Assert.IsType <ProjectionTarget>(t);
Assert.Same(expectedTarget, projTarget.OutputTarget);
Assert.Equal(typeof(From1), projTarget.InputTarget.DeclaredType);
},
t => {
var projTarget = Assert.IsType <ProjectionTarget>(t);
Assert.Same(expectedTarget, projTarget.OutputTarget);
Assert.Equal(typeof(From2), projTarget.InputTarget.DeclaredType);
}
});
}
public void Projection_ShouldProject_FromTypeSelector()
{
// Arrange
var targets = new TargetContainer();
targets.RegisterType <From1>();
targets.RegisterType <From2>();
targets.RegisterProjection <From, ITo <From> >((r, t) => typeof(To <>).MakeGenericType(t.DeclaredType));
// Act
var result = targets.Fetch(typeof(IEnumerable <ITo <From> >));
// Assert
var enumTarget = Assert.IsType <EnumerableTarget>(result);
Assert.Collection(enumTarget, new Action <ITarget>[] {
t => {
var projTarget = Assert.IsType <ProjectionTarget>(t);
Assert.IsType <ConstructorTarget>(projTarget.OutputTarget);
Assert.Equal(typeof(To <From1>), projTarget.OutputTarget.DeclaredType);
Assert.Equal(typeof(From1), projTarget.InputTarget.DeclaredType);
},
t => {
var projTarget = Assert.IsType <ProjectionTarget>(t);
Assert.IsType <ConstructorTarget>(projTarget.OutputTarget);
Assert.Equal(typeof(To <From2>), projTarget.OutputTarget.DeclaredType);
Assert.Equal(typeof(From2), projTarget.InputTarget.DeclaredType);
}
});
}
public void Projection_ShouldAutoProject()
{
// Arrange
var targets = new TargetContainer();
targets.RegisterType <From1>();
targets.RegisterType <From2>();
targets.RegisterProjection <From, To>();
// Act
var result = targets.Fetch(typeof(IEnumerable <To>));
// Assert
var enumTarget = Assert.IsType <EnumerableTarget>(result);
Assert.Collection(enumTarget, new Action <ITarget>[] {
t => {
var projTarget = Assert.IsType <ProjectionTarget>(t);
Assert.Equal(typeof(To), projTarget.DeclaredType);
Assert.IsType <ConstructorTarget>(projTarget.OutputTarget);
Assert.Equal(typeof(From1), projTarget.InputTarget.DeclaredType);
},
t => {
var projTarget = Assert.IsType <ProjectionTarget>(t);
Assert.Equal(typeof(To), projTarget.DeclaredType);
Assert.IsType <ConstructorTarget>(projTarget.OutputTarget);
Assert.Equal(typeof(From2), projTarget.InputTarget.DeclaredType);
}
});
}
public void ShouldAddRegistrations()
{
var configs = new CombinedTargetContainerConfig
{
Configuration.InjectLists.Instance
};
var targets = new TargetContainer(configs);
var concreteTarget = targets.Fetch(typeof(List <string>));
var interfaceTarget = targets.Fetch(typeof(IList <string>));
Assert.NotNull(concreteTarget);
Assert.False(concreteTarget.UseFallback);
Assert.NotNull(interfaceTarget);
Assert.False(interfaceTarget.UseFallback);
}
public void ShouldNotAddRegistrationsIfDisabledByOption()
{
// note input order reversed from the preferred: tests that InjectCollections config
// expresses dependency on a configuration which configures the option
CombinedTargetContainerConfig config = new CombinedTargetContainerConfig()
{
InjectCollections.Instance,
Configure.Option <EnableCollectionInjection>(false)
};
var targets = new TargetContainer(config);
Assert.Null(targets.Fetch(typeof(Collection <string>)));
Assert.Null(targets.Fetch(typeof(ICollection <string>)));
Assert.Null(targets.Fetch(typeof(ReadOnlyCollection <string>)));
Assert.Null(targets.Fetch(typeof(IReadOnlyCollection <string>)));
}
public void ShouldRegisterForImplicitType()
{
ITarget t = new ObjectTarget("hello word");
ITargetContainer rezolverBuilder = new TargetContainer();
rezolverBuilder.Register(t);
var t2 = rezolverBuilder.Fetch(typeof(string));
Assert.Same(t, t2);
}
public void SimpleLookup()
{
// <example1>
var targets = new TargetContainer();
targets.RegisterObject("hello world");
var target = targets.Fetch(typeof(string));
Assert.IsType <ObjectTarget>(target);
// </example1>
}
public void ShouldFavourGenericSpecialisationOfGeneric()
{
// Arrange
ITargetContainer targets = new TargetContainer();
var target = Target.ForType(typeof(Generic <>));
//note here - using MakeGenericType is the only way to get a reference to a type like IFoo<IFoo<>> because
//supply an open generic as a type parameter to a generic is not valid.
var target2 = Target.ForType(typeof(NestedGenericA <>));
targets.Register(target, typeof(IGeneric <>));
targets.Register(target2, typeof(IGeneric <>).MakeGenericType(typeof(IEnumerable <>)));
// Act
var fetched = targets.Fetch(typeof(IGeneric <IEnumerable <int> >));
var fetched2 = targets.Fetch(typeof(IGeneric <int>));
// Assert
Assert.Same(target2, fetched);
Assert.Same(target, fetched2);
}
public void LookupByBase()
{
// <example2>
var targets = new TargetContainer();
targets.Register(Target.ForType <MyService>(), typeof(IMyService));
var target = targets.Fetch(typeof(IMyService));
Assert.IsType <ConstructorTarget>(target);
// </example2>
}
public void ShouldRegisterNullObjectTarget()
{
// <example1>
ITarget t = new ObjectTarget(null);
ITargetContainer r = new TargetContainer();
r.Register(t, serviceType: typeof(object));
var t2 = r.Fetch(typeof(object));
Assert.Same(t, t2);
// </example1>
}
public void ShouldSupportRegisteringSpecialisationOfGeneric()
{
// Assert
ITargetContainer targets = new TargetContainer();
targets.RegisterType(typeof(Generic <>), typeof(IGeneric <>));
// Act
var fetched = targets.Fetch(typeof(IGeneric <int>));
// Assert
Assert.NotNull(fetched);
Assert.False(fetched.UseFallback);
}
public void MixedVariance_ShouldFetchCompatibleFunc()
{
// Arrange
var targets = new TargetContainer();
var expected = Target.ForObject(new Func <object, string>(o => o.ToString()));
targets.Register(expected);
// Act
var result = targets.Fetch(typeof(Func <string, object>));
// Assert
Assert.Equal(expected.Id, result.Id);
}
public void ShouldSupportRegisteringAndRetrievingGenericWithAsymmetricGenericBase()
{
// Arrange
ITargetContainer targets = new TargetContainer();
var target = Target.ForType(typeof(NestedGenericA <>));
targets.Register(target, typeof(IGeneric <>).MakeGenericType(typeof(IEnumerable <>)));
// Act
var fetched = targets.Fetch(typeof(IGeneric <IEnumerable <int> >));
// Assert
Assert.Same(target, fetched);
}
public void ShouldSupportRegisteringAndRetrievingGenericWithGenericParameter()
{
// Arrange
ITargetContainer targets = new TargetContainer();
var target = Target.ForType(typeof(Generic <>));
targets.Register(target, typeof(IGeneric <>));
// Act
var fetched = targets.Fetch(typeof(IGeneric <IGeneric <int> >));
// Assert
Assert.Same(target, fetched);
}
public void Covariant_ShouldFetch(string name, Type tTarget, Type toFetch)
{
// Arrange
ITargetContainer targets = new TargetContainer();
var target = new TestTarget(tTarget, false, true, ScopeBehaviour.None);
targets.Register(target);
// Act
var fetched = targets.Fetch(toFetch);
// Assert
Assert.Equal(target.Id, fetched.Id);
}
public void ShouldAddRegistrations()
{
CombinedTargetContainerConfig config = new CombinedTargetContainerConfig
{
InjectCollections.Instance
};
var targets = new TargetContainer(config);
var rwConcreteTarget = targets.Fetch(typeof(Collection <string>));
var rwInterfaceTarget = targets.Fetch(typeof(ICollection <string>));
var roConcreteTarget = targets.Fetch(typeof(ReadOnlyCollection <string>));
var roInterfaceTarget = targets.Fetch(typeof(IReadOnlyCollection <string>));
Assert.NotNull(rwConcreteTarget);
Assert.NotNull(rwInterfaceTarget);
Assert.NotNull(roConcreteTarget);
Assert.NotNull(roInterfaceTarget);
Assert.False(rwConcreteTarget.UseFallback);
Assert.False(rwInterfaceTarget.UseFallback);
Assert.False(roConcreteTarget.UseFallback);
Assert.False(roInterfaceTarget.UseFallback);
}
public void ShouldConfigureAfterOptionSet()
{
CombinedTargetContainerConfig coll = new CombinedTargetContainerConfig
{
// add the dependant first
new ConfiguredByTestOptionConfig(t => Assert.Equal("configured!", t.GetOption <TestOption>()), true)
};
// then add the config that configures the option :)
coll.ConfigureOption <TestOption>("configured!");
var targets = new TargetContainer(coll);
// this just ensures that the configure method was actually called
Assert.IsType <Rezolver.Targets.ObjectTarget>(targets.Fetch(typeof(ConfiguredByTestOptionConfig)));
}
public void ShouldFavourSpecialisationOfGenericInt()
{
// Arrange
ITargetContainer targets = new TargetContainer();
var notExpected = Target.ForType(typeof(Generic <>));
var expected = Target.ForType(typeof(AltGeneric <int>));
targets.Register(notExpected, typeof(IGeneric <>));
targets.Register(expected, typeof(IGeneric <int>));
// Act
var fetched = targets.Fetch(typeof(IGeneric <int>));
// Assert
Assert.NotSame(notExpected, fetched);
Assert.Same(expected, fetched);
}
public void Covariant_ShouldNotRetrieveConstrained()
{
// Arrange
var targets = new TargetContainer();
var expected = Target.ForType(typeof(Covariant <>));
var notExpected = Target.ForType(typeof(ConstrainedCovariant <>));
targets.Register(expected, typeof(ICovariant <>));
targets.Register(notExpected, typeof(ICovariant <>));
// Act
var single = targets.Fetch(typeof(ICovariant <string>));
var all = targets.FetchAll(typeof(ICovariant <string>));
// Assert
Assert.Same(expected, single);
Assert.Single(all, expected);
}
public void Covariant_Enumerable_ShouldContainAllMatches_NestedCovariant()
{
// Arrange
var targets = new TargetContainer();
var baseTarget = Target.ForType <Covariant <BaseClass> >();
var childTarget = Target.ForType <Covariant <BaseClassChild> >();
var grandChildTarget = Target.ForType <Covariant <BaseClassGrandchild> >();
targets.Register(baseTarget, typeof(ICovariant <BaseClass>));
targets.Register(childTarget, typeof(ICovariant <BaseClassChild>));
targets.Register(grandChildTarget, typeof(ICovariant <BaseClassGrandchild>));
// Act
var enumerableTarget = Assert.IsType <EnumerableTarget>(targets.Fetch(typeof(IEnumerable <ICovariant <BaseClass> >)));
// Assert
Assert.Equal(new[] { baseTarget.Id, childTarget.Id, grandChildTarget.Id }, enumerableTarget.Targets.Select(t => t.Id));
}
public void ShouldNotFetchConstrainedGenericForIncompatibleType()
{
// Arrange
ITargetContainer targets = new TargetContainer();
var expected = Target.ForType(typeof(Generic <>));
var notexpected = Target.ForType(typeof(ConstrainedGeneric <>));
targets.Register(expected, typeof(IGeneric <>));
targets.Register(notexpected, typeof(IGeneric <>));
// Act
var single = targets.Fetch(typeof(IGeneric <string>));
var all = targets.FetchAll(typeof(IGeneric <string>));
// Assert
Assert.Same(expected, single);
Assert.Single(all, expected);
}
public void Covariant_ShouldRegister_TypeWhichReferencesItselfInImplementedCovariant_Complex()
{
// This is inspired by an error that I'm getting in Xamarin when I attempt to register
// pages in the container - it immediately goes into an endless loop as it attempts
// to produce the known list of covariant types
// Arrange
var targets = new TargetContainer();
targets.RegisterType <GenericArg>();
// Act
var fetched = targets.Fetch(typeof(GenericArg));
// Assert
Assert.NotNull(fetched);
Assert.False(fetched.UseFallback);
}
public void Covariant_Enumerable_ShouldContainAllMatches()
{
// Arrange
var targets = new TargetContainer();
var baseTarget = Target.ForType <BaseClass>();
var childTarget = Target.ForType <BaseClassChild>();
var grandChildTarget = Target.ForType <BaseClassGrandchild>();
targets.Register(baseTarget);
targets.Register(childTarget);
targets.Register(grandChildTarget);
// Act
var enumerableTarget = Assert.IsType <EnumerableTarget>(targets.Fetch(typeof(IEnumerable <BaseClass>)));
// Assert
// (can't compare targets because
Assert.Equal(new[] { typeof(BaseClass), typeof(BaseClassChild), typeof(BaseClassGrandchild) }, enumerableTarget.Targets.Select(t => t.DeclaredType));
}
public void ShouldFetchContravariant(Type tTarget, Type toFetch)
{
// this theory specifically tests that if we register a target for a generic which
// has contravariant type parameters, then it will be found automatically.
// the actual handling of creating an instance is tested in the compiler spec tests
// covering the ConstructorTarget
// Arrange
ITargetContainer targets = new TargetContainer();
var target = new TestTarget(tTarget, false, true, ScopeBehaviour.None);
targets.Register(target);
// Act
var fetched = targets.Fetch(toFetch);
// Assert
Assert.Equal(target.Id, fetched.Id);
}