Catel - Part 4 of n: Unit testing with Catel

using System.Collections.ObjectModel;
using Catel.Collections;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace Catel.Test.Collections
{
	[TestClass]
	public class CollectionHelperTest
	{
		#region IsEqualTo
        [TestMethod]
        public void IsEqualTo_ShouldReturnFalse()
        {
            var collectionA = new Collection<int> { 1 };
            var collectionB = new Collection<int> { 1, 2 };

            Assert.IsFalse(CollectionHelper.IsEqualTo(collectionA, collectionB));
        }

        [TestMethod]
        public void IsEqualTo_ShouldReturnTrue()
        {
            var collectionA = new Collection<int> { 1 };
            var collectionB = new Collection<int> { 1 };

            Assert.IsTrue(CollectionHelper.IsEqualTo(collectionA, collectionB));
        }

        [TestMethod]
        public void IsEqualTo_ShouldReturnTrueWithEqualObjects()
        {
            var collection = new Collection<int> { 1 };

            Assert.IsTrue(CollectionHelper.IsEqualTo(collection, collection));
        }

        [TestMethod]
        public void IsEqualTo_ShouldreturnFalseWithCollectionANull()
        {
            Collection<int> collectionA = null;
            var collectionB = new Collection<int> { 1 };

            Assert.IsFalse(CollectionHelper.IsEqualTo(collectionA, collectionB));
        }

        [TestMethod]
        public void IsEqualTo_ShouldReturnFalseWithCollectionBNull()
        {
            var collectionA = new Collection<int> { 1 };
            Collection<int> collectionB = null;

            Assert.IsFalse(CollectionHelper.IsEqualTo(collectionA, collectionB));
        }

        [TestMethod]
        public void IsEqualTo_ShouldReturnFalseWhenThridValueDoesNotMatch()
        {
            var collectionA = new Collection<int> { 1, 2, 4 };
            var collectionB = new Collection<int> { 1, 2, 3 };

            Assert.IsFalse(CollectionHelper.IsEqualTo(collectionA, collectionB));
        }
		#endregion
	}
}