public void GetRegistrationInfo_ContainerWithSingletonTypeRegistered()
{
var helper = new MefHelper();
var container = new CompositionContainer();
container.RegisterType(typeof(ITestInterface), typeof(TestClass1));
var registrationInfo = helper.GetRegistrationInfo(container, typeof(ITestInterface));
Assert.AreEqual(typeof(ITestInterface), registrationInfo.DeclaringType);
Assert.AreEqual(RegistrationType.Singleton, registrationInfo.RegistrationType);
}
public void ResolveType_Singleton()
{
var helper = new MefHelper();
var container = new CompositionContainer();
container.RegisterType <ITestInterface, TestClass1>();
var resolvedInstance1 = helper.ResolveType(container, typeof(ITestInterface));
Assert.IsNotNull(resolvedInstance1);
Assert.IsInstanceOfType(resolvedInstance1, typeof(TestClass1));
var resolvedInstance2 = helper.ResolveType(container, typeof(ITestInterface));
Assert.IsNotNull(resolvedInstance2);
Assert.IsInstanceOfType(resolvedInstance2, typeof(TestClass1));
Assert.IsTrue(ReferenceEquals(resolvedInstance1, resolvedInstance2));
}
public void ResolveType_Transient()
{
var helper = new MefHelper();
var container = new CompositionContainer();
container.RegisterType <ITestInterface, TestClass1>();
var resolvedInstance1 = helper.ResolveType(container, typeof(ITestInterface));
Assert.IsNotNull(resolvedInstance1);
Assert.IsInstanceOfType(resolvedInstance1, typeof(TestClass1));
var resolvedInstance2 = helper.ResolveType(container, typeof(ITestInterface));
Assert.IsNotNull(resolvedInstance2);
Assert.IsInstanceOfType(resolvedInstance2, typeof(TestClass1));
// Note that MEF does not support transient types
Assert.IsTrue(ReferenceEquals(resolvedInstance1, resolvedInstance2));
}
