public void ErlVarTest()
{
var t = ErlVar.Any;
Assert.IsFalse(t.Equals(new ErlVar(ConstAtoms.ANY)));
Assert.AreEqual(ConstAtoms.ANY, t.Name);
Assert.AreEqual(ErlTypeOrder.ErlObject, t.ValueType);
t = new ErlVar(N, ErlTypeOrder.ErlLong);
Assert.AreEqual("N", t.Name.Value);
Assert.AreEqual(ErlTypeOrder.ErlLong, t.ValueType);
{
var bind = new ErlVarBind();
Assert.IsTrue(t.Match(new ErlByte(10), bind));
Assert.AreEqual(10, bind["N"].ValueAsLong);
bind.Clear();
var q = new ErlVar("N", ErlTypeOrder.ErlByte);
Assert.IsTrue(q.Match(new ErlLong(111), bind));
Assert.AreEqual(111, bind["N"].ValueAsLong);
}
Assert.IsFalse(t.Matches(new ErlVar()));
Assert.IsFalse(new ErlVar(A).Matches(new ErlVar(A)));
Assert.IsFalse(new ErlVar(A).Matches(new ErlVar(B)));
Assert.AreEqual(new ErlVarBind { { N, (ErlLong)10 } }, t.Match((ErlLong)10));
Assert.AreEqual(new ErlVarBind { { A, (ErlLong)10 } }, new ErlVar(A).Match((ErlLong)10));
Assert.AreEqual(-1, new ErlAtom("ok").CompareTo(t));
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsObject; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsInt; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsLong; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsDecimal; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsDateTime; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsTimeSpan; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsDouble; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsString; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsBool; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsChar; });
Assert.Throws<ErlIncompatibleTypesException>(() => { var x = t.ValueAsByteArray; });
Assert.AreEqual("N::int()", t.ToString());
Assert.IsTrue(t.IsScalar);
Assert.AreEqual(ErlTypeOrder.ErlVar, t.TypeOrder);
IErlObject temp = null;
Assert.IsFalse(t.Subst(ref temp, new ErlVarBind { { M, new ErlLong(100) } }));
Assert.IsTrue(t.Subst(ref temp, new ErlVarBind { { N, new ErlLong(100) } }));
Assert.AreEqual(new ErlLong(100), temp);
temp = new ErlVar(M, ErlTypeOrder.ErlLong);
Assert.IsTrue(temp.Subst(ref temp, new ErlVarBind { { M, new ErlLong(100) } }));
Assert.AreEqual(ErlTypeOrder.ErlVar, t.Visit(ErlTypeOrder.ErlByte, (acc, o) => ((ErlVar)o).TypeOrder));
Assert.AreEqual(new ErlLong(100), temp);
temp = new ErlVar(N, ErlTypeOrder.ErlObject);
Assert.IsTrue(temp.Subst(ref temp, new ErlVarBind { { N, new ErlLong(100) } }));
// Invalid variable type
temp = new ErlVar(N, ErlTypeOrder.ErlAtom);
Assert.Throws<ErlException>(() => temp.Subst(ref temp, new ErlVarBind { { N, new ErlLong(100) } }));
}