Deveel.Data.MathFunctionTests.Cos C# (CSharp) Method

        public void Cos()
        {
            var value = SqlExpression.Constant(Field.Number(new SqlNumber(9963)));

            var result = Select("COS", value);

            Assert.IsNotNull(result);
            Assert.IsFalse(Field.IsNullField(result));

            Assert.IsInstanceOf<NumericType>(result.Type);
            Assert.IsInstanceOf<SqlNumber>(result.Value);

            var number = ((SqlNumber) result.Value).ToDouble();

            Assert.AreEqual(-0.53211858514845722, number);
        }