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));
}
public void ResolveType_ContainerWithoutTypeRegistered()
{
var helper = new MefHelper();
var container = new CompositionContainer();
ExceptionTester.CallMethodAndExpectException <NotSupportedException>(() => helper.ResolveType(container, typeof(ITestInterface)));
}
public void ResolveType_InvalidContainer()
{
var helper = new MefHelper();
var container = new object();
ExceptionTester.CallMethodAndExpectException <NotSupportedException>(() => helper.ResolveType(container, typeof(ITestInterface)));
}
public void ResolveType_InterfaceTypeNull()
{
var helper = new MefHelper();
var container = new CompositionContainer();
ExceptionTester.CallMethodAndExpectException <ArgumentNullException>(() => helper.ResolveType(container, null));
}
public void ResolveType_ContainerNull()
{
var helper = new MefHelper();
ExceptionTester.CallMethodAndExpectException <ArgumentNullException>(() => helper.ResolveType(null, typeof(ITestInterface)));
}