SqlNumberTests.cs

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// 
//  Copyright 2010-2014 Deveel
// 
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
// 
//        http://www.apache.org/licenses/LICENSE-2.0
// 
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.

using System;

using NUnit.Framework;

namespace Deveel.Data.Sql.Objects {
    [TestFixture]
    [Category("SQL Objects")]
    [Category("Numbers")]
    public class SqlNumberTests {
        [Test]
        public void Create_FromInteger() {
            var value = new SqlNumber((int) 45993);
            Assert.IsFalse(value.IsNull);
            Assert.IsTrue(value.CanBeInt32);
            Assert.IsTrue(value.CanBeInt64);
            Assert.AreEqual(0, value.Scale);
            Assert.AreEqual(5, value.Precision);
            Assert.AreEqual(NumericState.None, value.State);
            Assert.AreEqual(1, value.Sign);
        }

        [Test]
        public void Create_FromBigInt() {
            var value = new SqlNumber(4599356655L);
            Assert.IsFalse(value.IsNull);
            Assert.IsFalse(value.CanBeInt32);
            Assert.IsTrue(value.CanBeInt64);
            Assert.AreEqual(0, value.Scale);
            Assert.AreEqual(10, value.Precision);
            Assert.AreEqual(NumericState.None, value.State);
            Assert.AreEqual(1, value.Sign);         
        }

        [Test]
        public void Create_FromDouble() {
            var value = new SqlNumber(459935.9803d);
            Assert.IsFalse(value.IsNull);
            Assert.IsFalse(value.CanBeInt32);
            Assert.IsFalse(value.CanBeInt64);
            Assert.AreEqual(28, value.Scale);
            Assert.AreEqual(34, value.Precision);
            Assert.AreEqual(NumericState.None, value.State);
            Assert.AreEqual(1, value.Sign);
        }

        [Test]
        public void Parse_BigDecimal() {
            var value = new SqlNumber();
            Assert.DoesNotThrow(() => value = SqlNumber.Parse("98356278.911288837773848500069994933229238e45789"));
            Assert.IsFalse(value.IsNull);
            Assert.IsFalse(value.CanBeInt32);
            Assert.IsFalse(value.CanBeInt64);
            Assert.Greater(value.Precision, 40);
        }

        [Test]
        public void Convert_ToBoolean_Success() {
            var value = SqlNumber.One;
            var b = new SqlBoolean();
            Assert.DoesNotThrow(() => b = (SqlBoolean)Convert.ChangeType(value, typeof(SqlBoolean)));
            Assert.IsTrue(b);
        }

        [Test]
        public void Integer_Greater_True() {
            var value1 = new SqlNumber(76);
            var value2 = new SqlNumber(54);

            Assert.IsTrue(value1 > value2);
        }

        [Test]
        public static void BigNumber_Greater_True() {
            var value1 = SqlNumber.Parse("98356278.911288837773848500069994933229238e45789");
            var value2 = SqlNumber.Parse("348299.01991828833333333333488888388829911182227373738488847112349928");

            Assert.IsTrue(value1 > value2);
        }
    }
}