private void checkCast <T>(object source, T value)
{
Assert.IsTrue(Typecasts.CanCastTo(source, typeof(T)));
var result = Typecasts.CastTo(source, typeof(T));
Assert.AreEqual(value, result);
}
public void CastCollection()
{
checkCast <object>(collection, collection);
checkCast <IEnumerable <ITypedElement> >(collection, collection);
Assert.IsFalse(Typecasts.CanCastTo(collection, typeof(ITypedElement)));
Assert.IsFalse(Typecasts.CanCastTo(collection, typeof(bool)));
Assert.IsFalse(Typecasts.CanCastTo(collection, typeof(bool?)));
Assert.IsFalse(Typecasts.CanCastTo(collection, typeof(string)));
}
public void CastFromNull()
{
checkCast <object>(null, null);
checkCast <IEnumerable <ITypedElement> >(null, ElementNode.EmptyList);
checkCast <ITypedElement>(null, null);
Assert.IsFalse(Typecasts.CanCastTo(null, typeof(bool)));
checkCast <bool?>(null, null);
checkCast <string>(null, null);
}
public void CastFromNull()
{
checkCast <object>(null, null);
checkCast <IEnumerable <IElementNavigator> >(null, FhirValueList.Empty);
checkCast <IElementNavigator>(null, null);
Assert.False(Typecasts.CanCastTo(null, typeof(bool)));
checkCast <bool?>(null, null);
checkCast <string>(null, null);
}
public void CastComplex()
{
checkCast <object>(complex, complex);
Assert.IsTrue(Typecasts.CanCastTo(complex, typeof(IEnumerable <ITypedElement>)));
var result = (IEnumerable <ITypedElement>)Typecasts.CastTo(complex, typeof(IEnumerable <ITypedElement>));
Assert.AreEqual(complex, result.Single());
checkCast <ITypedElement>(complex, complex);
Assert.IsFalse(Typecasts.CanCastTo(collection, typeof(bool)));
Assert.IsFalse(Typecasts.CanCastTo(collection, typeof(bool?)));
Assert.IsFalse(Typecasts.CanCastTo(collection, typeof(string)));
}
public void CastNullable()
{
checkCast <object>("hi", "hi");
Assert.IsTrue(Typecasts.CanCastTo("hi", typeof(IEnumerable <ITypedElement>)));
var result = (IEnumerable <ITypedElement>)Typecasts.CastTo("hi", typeof(IEnumerable <ITypedElement>));
Assert.AreEqual("hi", result.Single().Value);
Assert.IsTrue(Typecasts.CanCastTo("hi", typeof(ITypedElement)));
var result2 = (ITypedElement)Typecasts.CastTo("hi", typeof(ITypedElement));
Assert.AreEqual("hi", result2.Value);
checkCast <bool?>(true, true);
checkCast <decimal?>(4L, 4m);
checkCast <string>("hi", "hi");
Assert.IsFalse(Typecasts.CanCastTo(4, typeof(string)));
Assert.IsFalse(Typecasts.CanCastTo(4m, typeof(long?)));
}
public void CastValue()
{
checkCast <object>(4L, 4L);
Assert.True(Typecasts.CanCastTo(4, typeof(IEnumerable <IElementNavigator>)));
var result = (IEnumerable <IElementNavigator>)Typecasts.CastTo(4L, typeof(IEnumerable <IElementNavigator>));
Assert.Equal(4L, result.Single().Value);
Assert.True(Typecasts.CanCastTo(4L, typeof(IElementNavigator)));
var result2 = (IElementNavigator)Typecasts.CastTo(4L, typeof(IElementNavigator));
Assert.Equal(4L, result2.Value);
checkCast <bool>(true, true);
checkCast <decimal>(4L, 4m);
checkCast <bool?>(true, true);
checkCast <decimal?>(4L, 4m);
checkCast <string>("hi", "hi");
Assert.False(Typecasts.CanCastTo(4, typeof(string)));
Assert.False(Typecasts.CanCastTo(4m, typeof(long)));
}
