public void WhenAdapterExistsForBaseInterface_ThenReturnsAdaptedObject()
{
var service = new AdapterService(new StringAdapter());
var foo = Mock.Of <IFrom3>();
var adapted = service.Adapt(foo).As <string>();
Assert.Equal("foo", adapted);
}
public void WhenNoAdapterExists_ThenReturnsDefaultValue()
{
var service = new AdapterService();
var from = Mock.Of <IFrom>();
var adapted = service.Adapt(from).As <string>();
Assert.Null(adapted);
}
public void WhenAdapterExistsToDerivedInterface_ThenReturnsAdaptedObject()
{
var service = new AdapterService(
Mock.Of <IAdapter <IFrom, ITo2> >(x =>
x.Adapt(It.IsAny <IFrom>()) == Mock.Of <ITo2>()));
var adapted = service.Adapt(Mock.Of <IFrom>()).As <ITo>();
Assert.NotNull(adapted);
}
public void WhenAdapterImplementsInterface_ThenItIsUsed()
{
var service = new AdapterService(new StringAdapter());
var from = Mock.Of <IFrom>();
var adapted = service.Adapt(from).As <string>();
Assert.NotNull(adapted);
Assert.Equal("foo", adapted);
}
public void WhenAdapterExistsToMultipleDerivedInterfaces_ThenReturnsAdaptedObjectFromMostSpecific()
{
var service = new AdapterService(
Mock.Of <IAdapter <IFrom, ITo2> >(x =>
x.Adapt(It.IsAny <IFrom>()) == Mock.Of <ITo2>()),
Mock.Of <IAdapter <IFrom, ITo3> >(x =>
x.Adapt(It.IsAny <IFrom>()) == Mock.Of <ITo3>()));
var adapted = service.Adapt(Mock.Of <IFrom>()).As <ITo>();
Assert.NotNull(adapted);
Assert.IsAssignableFrom <ITo3>(adapted);
}
public void WhenAdapterImplementsMultipleInterfaces_ThenItIsCalledForAll()
{
var mock = new Mock <IAdapter <IFrom, string> >();
mock.Setup(x => x.Adapt(It.IsAny <IFrom>())).Returns("foo");
mock.As <IAdapter <IFrom, ITo> >();
var service = new AdapterService(mock.Object);
var from = Mock.Of <IFrom>();
service.Adapt(from).As <string>();
service.Adapt(from).As <ITo>();
mock.Verify(x => x.Adapt(from));
mock.As <IAdapter <IFrom, ITo> >().Verify(x => x.Adapt(from));
}
public void WhenMultipleAdaptersExist_ThenReturnsAdaptedObjectFromClosestInheritance()
{
var service = new AdapterService(new IAdapter[]
{
Mock.Of <IAdapter <IFrom, ITo> >(x =>
x.Adapt(It.IsAny <IFrom>()) == Mock.Of <ITo>(_ => _.Name == "IFrom, ITo")),
Mock.Of <IAdapter <IFrom3, ITo3> >(x =>
x.Adapt(It.IsAny <IFrom3>()) == Mock.Of <ITo3>(_ => _.Name == "IFrom3, ITo3")),
});
Assert.Equal("IFrom, ITo", service.Adapt(Mock.Of <IFrom>()).As <ITo>().Name);
Assert.Equal("IFrom, ITo", service.Adapt(Mock.Of <IFrom2>()).As <ITo>().Name);
Assert.Equal("IFrom3, ITo3", service.Adapt(Mock.Of <IFrom3>()).As <ITo>().Name);
// No registered adapter to ITo2 from IFrom or IFrom2
Assert.Null(service.Adapt(Mock.Of <IFrom>()).As <ITo2>());
Assert.Null(service.Adapt(Mock.Of <IFrom2>()).As <ITo2>());
// But ITo3 is assignable to ITo2, so from IFrom3 we can adapt
Assert.Equal("IFrom3, ITo3", service.Adapt(Mock.Of <IFrom3>()).As <ITo2>().Name);
}
public void WhenAdapterDoesNotImplementInterface_ThenNoOps()
{
var service = new AdapterService(new BadAdapter());
Assert.Null(service.Adapt(new object()).As <IFormattable>());
}
public Adaptable(AdapterService service, TSource source)
{
this.service = service;
this.source = source;
}
/// <summary>
/// Returns an adaptable object for the given <paramref name="source"/>.
/// </summary>
/// <returns>The adaptable object for the given source type.</returns>
public static IAdaptable <TSource> Adapt <TSource>(this TSource source)
where TSource : class
{
return(AdapterService.Adapt <TSource>(source));
}
