v4.0.0 (#1357)

Source/MQTTnet.Tests/Protocol_Tests.cs

@@ -0,0 +1,34 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using MQTTnet.Formatter;
+
+namespace MQTTnet.Tests
+{
+    [TestClass]
+    public class Protocol_Tests
+    {
+        [TestMethod]
+        public void Encode_Four_Byte_Integer()
+        {
+            var writer = new MqttBufferWriter(4, 4);
+            
+            for (uint value = 0; value < 268435455; value++)
+            {
+                writer.WriteVariableByteInteger(value);
+                
+                var buffer = writer.GetBuffer();
+                
+                var reader = new MqttBufferReader();
+                reader.SetBuffer(buffer, 0, writer.Length);
+                var checkValue = reader.ReadVariableByteInteger();
+
+                Assert.AreEqual(value, checkValue);
+                
+                writer.Reset(0);
+            }
+        }
+    }
+}