SqlBooleanTest.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("Booleans")]
    public class SqlBooleanTest {
        [Test]
        public void CreateFromByte() {
            var value = new SqlBoolean(1);
            Assert.IsNotNull(value);
            Assert.IsFalse(value.IsNull);
            Assert.AreEqual(true, (bool)value);

            value = new SqlBoolean(0);
            Assert.IsNotNull(value);
            Assert.IsFalse(value.IsNull);
            Assert.AreEqual(false, (bool)value);
        }

        [Test]
        public void CreateFromBoolean() {
            var value = new SqlBoolean(true);
            Assert.IsNotNull(value);
            Assert.IsFalse(value.IsNull);
            Assert.AreEqual(true, (bool)value);

            value = new SqlBoolean(false);
            Assert.IsNotNull(value);
            Assert.IsFalse(value.IsNull);
            Assert.AreEqual(false, (bool)value);
        }

        [Test]
        [Category("Comparison")]
        public void Compare_Equal() {
            var value1 = SqlBoolean.True;
            var value2 = new SqlBoolean(true);

            Assert.IsFalse(value1.IsNull);
            Assert.IsFalse(value2.IsNull);

            Assert.IsTrue(value1.IsComparableTo(value2));

            int i = -2;
            Assert.DoesNotThrow(() => i = value1.CompareTo(value2));
            Assert.AreEqual(0, i);
        }

        [Test]
        [Category("Comparison")]
        public void Compare_NotEqual() {
            var value1 = SqlBoolean.False;
            var value2 = new SqlBoolean(true);

            Assert.IsFalse(value1.IsNull);
            Assert.IsFalse(value2.IsNull);

            Assert.IsTrue(value1.IsComparableTo(value2));

            int i = -2;
            Assert.DoesNotThrow(() => i = value1.CompareTo(value2));
            Assert.AreEqual(-1, i);
        }

        [Test]
        [Category("Comparison")]
        public void Compare_ToBooleanNull() {
            var value1 = SqlBoolean.True;
            var value2 = SqlBoolean.Null;

            Assert.IsFalse(value1.IsNull);
            Assert.IsTrue(value2.IsNull);

            Assert.IsTrue(value1.IsComparableTo(value2));

            int i = -2;
            Assert.DoesNotThrow(() => i = value1.CompareTo(value2));
            Assert.AreEqual(1, i);
        }

        [Test]
        [Category("Comparison")]
        public void Compare_ToNull() {
            var value1 = SqlBoolean.True;
            var value2 = SqlNull.Value;

            Assert.IsFalse(value1.IsNull);
            Assert.IsTrue(value2.IsNull);

            Assert.IsTrue(value1.IsComparableTo(value2));

            int i = -2;
            Assert.DoesNotThrow(() => i = value1.CompareTo(value2));
            Assert.AreEqual(1, i);          
        }

        [Test]
        [Category("Comparison")]
        [Category("Numbers")]
        public void Compare_ToNumber_InRange() {
            var value1 = SqlBoolean.True;
            var value2 = SqlNumber.One;

            Assert.IsFalse(value1.IsNull);
            Assert.IsFalse(value2.IsNull);

            Assert.IsTrue(value1.IsComparableTo(value2));

            int i = -2;
            Assert.DoesNotThrow(() => i = value1.CompareTo(value2));
            Assert.AreEqual(0, i);

            value2 = SqlNumber.Zero;

            Assert.IsFalse(value1.IsNull);
            Assert.IsFalse(value2.IsNull);

            Assert.IsTrue(value1.IsComparableTo(value2));

            i = -2;
            Assert.DoesNotThrow(() => i = value1.CompareTo(value2));
            Assert.AreEqual(1, i);
        }

        [Test]
        [Category("Comparison")]
        [Category("Numbers")]
        public void Compare_ToNumber_OutOfRange() {
            var value1 = SqlBoolean.True;
            var value2 = new SqlNumber(21);

            Assert.IsFalse(value1.IsNull);
            Assert.IsFalse(value2.IsNull);

            Assert.IsFalse(value1.IsComparableTo(value2));

            int i = -2;
            Assert.Throws<ArgumentOutOfRangeException>(() => i = value1.CompareTo(value2));
            Assert.AreEqual(-2, i);
        }

        [Test]
        [Category("Operators")]
        public void Equality_True() {
            var value1 = SqlBoolean.True;
            var value2 = SqlBoolean.True;

            Assert.IsTrue(value1 == value2);
        }

        [Test]
        [Category("Operators")]
        public void Equality_False() {
            var value1 = SqlBoolean.True;
            var value2 = SqlBoolean.False;
            
            Assert.IsTrue(value1 != value2);

            value2 = SqlBoolean.Null;

            Assert.IsTrue(value1 != value2);
        }

        [Test]
        [Category("Operators")]
        public void Equality_ToNull_True() {
            var value1 = SqlBoolean.Null;
            var value2 = SqlNull.Value;

            Assert.IsTrue(value1 == value2);
        }

        [Test]
        [Category("Conversion")]
        public void Convert_ToString() {
            var value = SqlBoolean.True;
            Assert.AreEqual("true", value.ToString());

            value = SqlBoolean.False;
            Assert.AreEqual("false", value.ToString());

            value = SqlBoolean.Null;
            Assert.AreEqual("NULL", value.ToString());
        }
    }
}