feat: Initial commit of IcdOrderedDictionary

ICD.Common.Utils.Tests/Collections/IcdOrderedDictionaryTest.cs

@@ -0,0 +1,92 @@
+using System.Collections.Generic;
+using System.Linq;
+using ICD.Common.Utils.Collections;
+using NUnit.Framework;
+
+namespace ICD.Common.Utils.Tests.Collections
+{
+	[TestFixture]
+	public sealed class IcdOrderedDictionaryTest
+	{
+		[Test]
+		public void OrderingTest()
+		{
+			IcdOrderedDictionary<string, string> dict = new IcdOrderedDictionary<string, string>
+			{
+				{"1", "a"},
+				{"2", "b"},
+				{"3", "c"}
+			};
+
+			Assert.IsTrue(dict.Keys.SequenceEqual(new[] {"1", "2", "3"}));
+			Assert.IsTrue(dict.Values.SequenceEqual(new[] { "a", "b", "c" }));
+
+			// Remove the key and add to the end of the dictionary
+			dict.Remove("2");
+			dict["2"] = "d";
+
+			Assert.IsTrue(dict.Keys.SequenceEqual(new[] { "1", "3", "2" }));
+			Assert.IsTrue(dict.Values.SequenceEqual(new[] { "a", "c", "d" }));
+
+			// No key change
+			dict["1"] = "e";
+
+			Assert.IsTrue(dict.Keys.SequenceEqual(new[] { "1", "3", "2" }));
+			Assert.IsTrue(dict.Values.SequenceEqual(new[] { "e", "c", "d" }));
+		}
+
+		[Test]
+		public void GetTest()
+		{
+			IcdOrderedDictionary<string, string> dict = new IcdOrderedDictionary<string, string>
+			{
+				{"1", "a"},
+				{"2", "b"},
+				{"3", "c"}
+			};
+
+			KeyValuePair<string, string> kvp = dict.Get(0);
+			Assert.AreEqual("1", kvp.Key);
+			Assert.AreEqual("a", kvp.Value);
+
+			kvp = dict.Get(1);
+			Assert.AreEqual("2", kvp.Key);
+			Assert.AreEqual("b", kvp.Value);
+
+			kvp = dict.Get(2);
+			Assert.AreEqual("3", kvp.Key);
+			Assert.AreEqual("c", kvp.Value);
+
+			// Remove the key and add to the end of the dictionary
+			dict.Remove("2");
+			dict["2"] = "d";
+
+			kvp = dict.Get(0);
+			Assert.AreEqual("1", kvp.Key);
+			Assert.AreEqual("a", kvp.Value);
+
+			kvp = dict.Get(1);
+			Assert.AreEqual("3", kvp.Key);
+			Assert.AreEqual("c", kvp.Value);
+
+			kvp = dict.Get(2);
+			Assert.AreEqual("2", kvp.Key);
+			Assert.AreEqual("d", kvp.Value);
+
+			// No key change
+			dict["1"] = "e";
+
+			kvp = dict.Get(0);
+			Assert.AreEqual("1", kvp.Key);
+			Assert.AreEqual("e", kvp.Value);
+
+			kvp = dict.Get(1);
+			Assert.AreEqual("3", kvp.Key);
+			Assert.AreEqual("c", kvp.Value);
+
+			kvp = dict.Get(2);
+			Assert.AreEqual("2", kvp.Key);
+			Assert.AreEqual("d", kvp.Value);
+		}
+	}
+}