Added new tests

MewtocolTests/TestLinkedLists.cs

@@ -0,0 +1,62 @@
+using Xunit;
+
+using MewtocolNet;
+using MewtocolNet.Registers;
+using Xunit.Abstractions;
+using MewtocolNet.Links;
+
+namespace MewtocolTests {
+
+    public class TestLinkedLists {
+
+        private readonly ITestOutputHelper output;
+
+        public TestLinkedLists (ITestOutputHelper output) {
+            this.output = output;
+        }
+
+        [Fact(DisplayName = "Linked error list")]
+        public void NumericRegisterMewtocolIdentifiers () {
+
+            var expectedData = new Dictionary<int, string> {
+
+                {21, "NACK error"},
+                {22, "WACK error"},
+                {23, "Station number overlap"},
+                {24, "Transmission error"},
+                {25, "Hardware error"},
+                {26, "Station number setting error"},
+                {27, "Frame over error"},
+                {28, "No response error"},
+                {29, "Buffer close error"},
+                {30, "Timeout error"},
+                {32, "Transmission impossible"},
+                {33, "Communication stop"},
+                {36, "No local station"},
+                {38, "Other com error"},
+                {40, "BCC error"},
+                {41, "Format error"},
+                {42, "Not supported error"},
+                {43, "Procedure error"},
+                {50, "Link setting error"},
+                {51, "Simultanious operation error"},
+                {52, "Sending disable error"},
+                {53, "Busy error"},
+                {60, "Paramter error"},
+                {61, "Data error"},
+                {62, "Registration error"},
+                {63, "Mode error"},
+                {66, "Adress error"},
+                {67, "No data error"},
+                {72, "Timeout"},
+                {73, "Timeout"},
+
+            };
+
+            Assert.Equal(expectedData, LinkedData.ErrorCodes);
+
+        }
+
+    }
+
+}