public void ShouldThrowIfTryToRegisterTypeWithMultipleCtors()
{
var sut = new NSubContainer();
var ex = Assert.Throws <ArgumentException>(() => sut.Register <ITestInterface, TestImplMultipleCtors>(NSubLifetime.Transient));
Assert.That(ex.Message, Contains.Substring("single public constructor"));
}
public void ShouldActivateRegisteredType()
{
var sut = new NSubContainer().Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
var result = sut.Resolve <ITestInterface>();
Assert.That(result, Is.Not.Null);
}
public void ShouldCreateNewContainerInstanceOnCustomize()
{
var sut = new NSubContainer();
var sutFork = sut.Customize();
Assert.That(sutFork, Is.Not.SameAs(sut));
}
public void ShouldFailIfTypeToDecorateDoesNotExist()
{
var sut = new NSubContainer();
var ex = Assert.Throws <ArgumentException>(
() => sut.Decorate <ITestInterface>((impl, r) => new TestImplDecorator(impl)));
Assert.That(ex.Message, Contains.Substring("implementation is not registered"));
}
public void ShouldFailWithMeaningfulExceptionIfUnableToResolveType()
{
var sut = new NSubContainer();
var ex = Assert.Throws <InvalidOperationException>(() => sut.Resolve <ITestInterface>());
Assert.That(ex.Message, Contains.Substring("not registered"));
Assert.That(ex.Message, Contains.Substring(typeof(ITestInterface).FullName));
}
public void ShouldUseNewRegistrationOnRepeatedRegister()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
sut.Register <ITestInterface, TestImplSingleCtor2>(NSubLifetime.Transient);
var result = sut.Resolve <ITestInterface>();
Assert.That(result, Is.AssignableTo <TestImplSingleCtor2>());
}
public void ShouldReturnSameInstanceForNewRequestForSingletonLifetime()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Singleton);
var result1 = sut.Resolve <ITestInterface>();
var result2 = sut.Resolve <ITestInterface>();
Assert.That(result2, Is.SameAs(result1));
}
public void ShouldAllowToRegisterTypeWithMultipleCtorsUsingFactoryMethod()
{
var sut = new NSubContainer();
sut.Register(_ => new TestImplMultipleCtors("42"), NSubLifetime.Transient);
var result = sut.Resolve <TestImplMultipleCtors>();
Assert.That(result, Is.Not.Null);
Assert.That(result.Value, Is.EqualTo("42"));
}
public void ShouldResolveDependencies()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
sut.Register <ClassWithDependency, ClassWithDependency>(NSubLifetime.Transient);
var result = sut.Resolve <ClassWithDependency>();
Assert.That(result.Dep, Is.AssignableTo <TestImplSingleCtor>());
}
public void ShouldReturnNewInstanceForEachRequestForTransientLifetime()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
var result1 = sut.Resolve <ITestInterface>();
var result2 = sut.Resolve <ITestInterface>();
Assert.That(result2, Is.Not.SameAs(result1));
}
public void ShouldDecorateWhenRegisteredOnSameContainer()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
sut.Decorate <ITestInterface>((impl, r) => new TestImplDecorator(impl));
var result = sut.Resolve <ITestInterface>();
Assert.That(result, Is.TypeOf <TestImplDecorator>());
}
public void ShouldUseRegistrationFromForkContainerIfRequestComesFromParentContainerRegistration()
{
var sut = new NSubContainer();
sut.Register <ClassWithDependency, ClassWithDependency>(NSubLifetime.Transient);
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
var sutFork = sut.Customize().Register <ITestInterface, TestImplSingleCtor2>(NSubLifetime.Transient);
var sutForkResult = sutFork.Resolve <ClassWithDependency>();
Assert.That(sutForkResult.Dep, Is.AssignableTo <TestImplSingleCtor2>());
}
public void ShouldAllowToResolveDependencyInFactoryMethod()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
sut.Register <ClassWithDependency>(r => new ClassWithDependency(r.Resolve <ITestInterface>()), NSubLifetime.Transient);
var result = sut.Resolve <ClassWithDependency>();
Assert.That(result, Is.Not.Null);
}
public void ShouldReturnFromParentContainerIfNoForkCustomizations()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
var sutFork = sut.Customize().Customize().Customize();
var result = sutFork.Resolve <ITestInterface>();
Assert.That(result, Is.AssignableTo <TestImplSingleCtor>());
}
public void ShouldReturnNewInstanceForSameRequestForTransientLifetime()
{
var sut = new NSubContainer();
sut.Register <ClassWithMultipleDependencies, ClassWithMultipleDependencies>(NSubLifetime.Transient);
sut.Register <ClassWithDependency, ClassWithDependency>(NSubLifetime.Transient);
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
var result = sut.Resolve <ClassWithMultipleDependencies>();
Assert.That(result.TestInterfaceDep, Is.Not.SameAs(result.ClassWithDependencyDep.Dep));
}
public void ShouldUseSameLifetimeForDecorator_SingletonCase()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Singleton);
sut.Decorate <ITestInterface>((impl, r) => new TestImplDecorator(impl));
var result1 = sut.Resolve <ITestInterface>();
var result2 = sut.Resolve <ITestInterface>();
Assert.That(result1, Is.SameAs(result2));
Assert.That(((TestImplDecorator)result1).Inner, Is.SameAs(((TestImplDecorator)result2).Inner));
}
public void ShouldPinDecoratedRegistrationAtRegistrationTime()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
var sutFork = sut.Customize().Decorate <ITestInterface>((impl, r) => new TestImplDecorator(impl));
// Override registration. Very rare case
sut.Register <ITestInterface, TestImplSingleCtor2>(NSubLifetime.Transient);
var result = sutFork.Resolve <ITestInterface>();
Assert.That(result, Is.TypeOf <TestImplDecorator>());
Assert.That(((TestImplDecorator)result).Inner, Is.TypeOf <TestImplSingleCtor>());
}
public void ShouldReturnSameValueWithinSameExplicitScope()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.PerScope);
sut.Register <ClassWithDependency, ClassWithDependency>(NSubLifetime.Transient);
var scope = sut.CreateScope();
var result1 = scope.Resolve <ClassWithDependency>();
var result2 = scope.Resolve <ClassWithDependency>();
Assert.That(result1, Is.Not.SameAs(result2));
Assert.That(result1.Dep, Is.SameAs(result2.Dep));
}
public void ShouldDecorateTheExistingRegistration()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.PerScope);
var sutFork = sut
.Customize()
.Decorate <ITestInterface>((impl, r) => new TestImplDecorator(impl));
var result = sutFork.Resolve <ITestInterface>();
Assert.That(result, Is.TypeOf <TestImplDecorator>());
Assert.That(((TestImplDecorator)result).Inner, Is.TypeOf <TestImplSingleCtor>());
}
public void ShouldNotModifyOriginalContainerOnCustomize()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.Transient);
var sutFork = sut.Customize().Register <ITestInterface, TestImplSingleCtor2>(NSubLifetime.Transient);
var sutResult = sut.Resolve <ITestInterface>();
var sutForkResult = sutFork.Resolve <ITestInterface>();
Assert.That(sutResult, Is.AssignableTo <TestImplSingleCtor>());
Assert.That(sutForkResult, Is.AssignableTo <TestImplSingleCtor2>());
}
public void ShouldReturnSameInstanceWhenResolvingDependencyInFactoryMethodForPerScopeLifetime()
{
var sut = new NSubContainer();
sut.Register <ClassWithDependency, ClassWithDependency>(NSubLifetime.Transient);
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.PerScope);
sut.Register <ClassWithMultipleDependencies>(
r => new ClassWithMultipleDependencies(r.Resolve <ITestInterface>(), r.Resolve <ClassWithDependency>()),
NSubLifetime.Transient);
var result = sut.Resolve <ClassWithMultipleDependencies>();
Assert.That(result.TestInterfaceDep, Is.SameAs(result.ClassWithDependencyDep.Dep));
}
public void ShouldBePossibleToCreateNestedDecorators()
{
var sut = new NSubContainer();
sut.Register <ITestInterface, TestImplSingleCtor>(NSubLifetime.PerScope);
var sutFork = sut
.Customize()
.Decorate <ITestInterface>((impl, r) => new TestImplDecorator(impl));
var sutForkFork = sutFork
.Customize()
.Decorate <ITestInterface>((impl, r) => new TestImplDecorator(impl));
var result = sutForkFork.Resolve <ITestInterface>();
var mostInner = ((result as TestImplDecorator)?.Inner as TestImplDecorator)?.Inner;
Assert.That(mostInner, Is.TypeOf <TestImplSingleCtor>());
}
public Scope(NSubContainer mostNestedContainer)
{
_mostNestedContainer = mostNestedContainer;
}
