public void Either4_Fold()
{
Action a = () => {};
Either <Action, object, string, Type> e = Either <Action, object, string, Type> .A(a);
Assert.AreEqual(a, e.Fold(v => v, v => null, v => null, v => null));
e = Either <Action, object, string, Type> .D(typeof(object));
Assert.AreEqual(typeof(object), e.Fold(v => null, v => null, v => null, v => v));
}
public void Either4_Fold_d_Null()
{
Func <Action, int> a = x => 42;
Func <object, int> b = x => Convert.ToInt32(x);
Func <string, int> c = x => Convert.ToInt32(x);
Func <Type, int> d = null;
var e = Either <Action, object, string, Type> .A(() => {});
AssertException <ArgumentNullException> (() => e.Fold(a, b, c, d));
e = Either <Action, object, string, Type> .B(new object());
AssertException <ArgumentNullException> (() => e.Fold(a, b, c, d));
e = Either <Action, object, string, Type> .C("foo");
AssertException <ArgumentNullException> (() => e.Fold(a, b, c, d));
e = Either <Action, object, string, Type> .D(typeof(object));
AssertException <ArgumentNullException> (() => e.Fold(a, b, c, d));
}
protected override Either <Action, object, string, Type> CreateValueZ()
{
return(Either <Action, object, string, Type> .D(typeof(string)));
}
public void Either4_D_ValueNull()
{
Either <Action, object, string, Type> .D(null);
}