StringObjectTests.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 Deveel.Data.Sql.Objects;
using Deveel.Data.Types;

using NUnit.Framework;

namespace Deveel.Data {
    [TestFixture]
    [Category("Data Objects")]
    [Category("Strings")]
    public class StringObjectTests {
        [Test]
        public void BasicVarChar_Create() {
            const string s = "Test string";
            var sObj = DataObject.VarChar(s);
            Assert.IsNotNull(sObj);
            Assert.IsInstanceOf<DataObject>(sObj);
            Assert.AreEqual(SqlTypeCode.VarChar, sObj.Type.TypeCode);
            Assert.IsInstanceOf<SqlString>(sObj.Value);
            Assert.AreEqual(s, sObj.Value);
        }

        [Test]
        public void BasicVarChar_Compare() {
            const string s = "Test string";
            var sObj1 = DataObject.VarChar(s);
            var sObj2 = DataObject.VarChar(s);

            Assert.IsNotNull(sObj1);
            Assert.IsNotNull(sObj2);

            Assert.IsTrue(sObj1.IsComparableTo(sObj2));
            Assert.AreEqual(0, sObj1.CompareTo(sObj2));
        }

        [Test]
        public void BasicVarChar_Add() {
            const string s1 = "First test string that comes ";
            const string s2 = "before the second test string";
            var sObj1 = DataObject.VarChar(s1);
            var sObj2 = DataObject.VarChar(s2);

            Assert.IsNotNull(sObj1);
            Assert.IsNotNull(sObj2);

            Assert.IsTrue(sObj1.IsComparableTo(sObj2));

            DataObject result = null;
            Assert.DoesNotThrow(() => result = sObj1.Add(sObj2));
            Assert.IsNotNull(result);
            Assert.AreEqual("First test string that comes before the second test string", (string)result);
        }

        [Test]
        public void BasicVarChar_Convert_ToInteger_Success() {
            const string s = "78998";
            var obj = DataObject.VarChar(s);

            Assert.IsNotNull(obj);
            Assert.IsInstanceOf<StringType>(obj.Type);
            Assert.AreEqual(SqlTypeCode.VarChar, obj.Type.TypeCode);

            DataObject result = null;
            Assert.DoesNotThrow(() => result = obj.CastTo(PrimitiveTypes.Numeric(SqlTypeCode.Integer)));
            Assert.IsNotNull(result);
            Assert.IsInstanceOf<NumericType>(result.Type);
            Assert.AreEqual(SqlTypeCode.Integer, result.Type.TypeCode);
            Assert.AreEqual(78998, result);
        }

        [Test]
        [Category("Numbers")]
        public void BasicVarChar_Convert_ToInteger_Fail() {
            const string s = "fail";
            var obj = DataObject.VarChar(s);

            Assert.IsNotNull(obj);
            Assert.IsInstanceOf<StringType>(obj.Type);
            Assert.AreEqual(SqlTypeCode.VarChar, obj.Type.TypeCode);

            DataObject result = null;
            Assert.DoesNotThrow(() => result = obj.CastTo(PrimitiveTypes.Numeric(SqlTypeCode.Integer)));
            Assert.IsNotNull(result);
            Assert.IsInstanceOf<NumericType>(result.Type);
            Assert.IsTrue(result.IsNull);
        }

        [Test]
        [Category("Booleans")]
        public void BasicVarChar_Convert_ToBoolean_Success() {
            const string s = "true";
            var obj = DataObject.VarChar(s);

            Assert.IsNotNull(obj);
            Assert.IsInstanceOf<StringType>(obj.Type);
            Assert.AreEqual(SqlTypeCode.VarChar, obj.Type.TypeCode);

            DataObject result = null;
            Assert.DoesNotThrow(() => result = obj.CastTo(PrimitiveTypes.Boolean()));
            Assert.IsNotNull(result);
            Assert.IsInstanceOf<BooleanType>(result.Type);
            Assert.IsFalse(result.IsNull);
            Assert.AreEqual(true, (bool)result);
        }
    }
}