Additional unit tests and test stubs

ICD.Common.Utils.Tests/Extensions/CollectionExtensionsTest.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+using ICD.Common.Utils.Extensions;
+using NUnit.Framework;
+
+namespace ICD.Common.Utils.Tests.Extensions
+{
+	[TestFixture]
+	public sealed class CollectionExtensionsTest
+	{
+		[Test]
+		public void RemoveAllPredicateTest()
+		{
+			List<int> a = new List<int> {1, 2, 2, 3};
+			List<int> b = new List<int> {2, 3};
+
+			((ICollection<int>)a).RemoveAll(i => b.Contains(i));
+
+			Assert.AreEqual(1, a.Count);
+			Assert.AreEqual(1, a[0]);
+		}
+
+		[Test]
+		public void RemoveAllOtherTest()
+		{
+			List<int> a = new List<int> {1, 2, 2, 3};
+			List<int> b = new List<int> {2, 3};
+
+			a.RemoveAll(b);
+
+			Assert.AreEqual(1, a.Count);
+			Assert.AreEqual(1, a[0]);
+		}
+	}
+}