public void EdmDecimalConstant()
        {
            var e = new EdmDecimalConstant((decimal)11.22);

            Assert.AreEqual(EdmExpressionKind.DecimalConstant, e.ExpressionKind, "e.ExpressionKind");
            Assert.IsNull(e.Type, "e.Type");
            Assert.AreEqual((decimal)11.22, e.Value, "e.Value");

            e = new EdmDecimalConstant(EdmCoreModel.Instance.GetDecimal(true), (decimal)33.22);
            Assert.AreEqual(true, e.Type.IsNullable, "e.Type.IsNullable");
            Assert.AreEqual((decimal)33.22, e.Value, "e.Value");

            e = new EdmDecimalConstant(null, (decimal)11.22);
            Assert.IsNull(e.Type, "e.Type");

            Assert.IsFalse(e.IsBad(), "Expression not bad.");
            Assert.AreEqual(0, e.Errors().Count(), "Expression has no errors");
        }