public void Over()
{
var stack = new Stack <ForthDatum>();
stack.Push(new ForthDatum("x"));
stack.Push(new ForthDatum("y"));
var local = stack.ClonePreservingOrder();
local.Push(new ForthDatum(2));
var parameters = new ForthPrimativeParameters(null, local, null, Dbref.NOT_FOUND, Dbref.NOT_FOUND, Dbref.NOT_FOUND, null, null, null, null, default);
var result = Pick.Execute(parameters);
Assert.NotNull(result);
Assert.IsTrue(result.IsSuccessful, result.Reason);
Assert.AreEqual(3, local.Count);
var x1 = local.Pop();
Assert.AreEqual(ForthDatum.DatumType.String, x1.Type);
Assert.AreEqual("x", x1.Value);
var y = local.Pop();
Assert.AreEqual(ForthDatum.DatumType.String, y.Type);
Assert.AreEqual("y", y.Value);
var x2 = local.Pop();
Assert.AreEqual(ForthDatum.DatumType.String, x2.Type);
Assert.AreEqual("x", x2.Value);
Assert.AreEqual(x1, x2);
}
public void Pick3()
{
var stack = new Stack <ForthDatum>();
stack.Push(new ForthDatum("a"));
stack.Push(new ForthDatum("b"));
stack.Push(new ForthDatum("c"));
stack.Push(new ForthDatum("d"));
stack.Push(new ForthDatum(3));
var local = stack.ClonePreservingOrder();
var parameters = new ForthPrimativeParameters(null, local, null, Dbref.NOT_FOUND, Dbref.NOT_FOUND, Dbref.NOT_FOUND, null, null, null, null, default);
var result = Pick.Execute(parameters);
Assert.NotNull(result);
Assert.IsTrue(result.IsSuccessful, result.Reason);
Assert.AreEqual(5, local.Count);
var b1 = local.Pop();
Assert.AreEqual(ForthDatum.DatumType.String, b1.Type);
Assert.AreEqual("b", b1.Value);
var d = local.Pop();
Assert.AreEqual(ForthDatum.DatumType.String, d.Type);
Assert.AreEqual("d", d.Value);
var c = local.Pop();
Assert.AreEqual(ForthDatum.DatumType.String, c.Type);
Assert.AreEqual("c", c.Value);
var b2 = local.Pop();
Assert.AreEqual(ForthDatum.DatumType.String, b2.Type);
Assert.AreEqual("b", b2.Value);
Assert.AreEqual(b1, b2);
var a = local.Pop();
Assert.AreEqual(ForthDatum.DatumType.String, a.Type);
Assert.AreEqual("a", a.Value);
}