diff --git a/src/Renci.SshNet.Tests/Classes/Messages/Connection/ChannelRequest/PseudoTerminalInfoTest.cs b/src/Renci.SshNet.Tests/Classes/Messages/Connection/ChannelRequest/PseudoTerminalInfoTest.cs
index 0476e2ed..fa60b765 100644
--- a/src/Renci.SshNet.Tests/Classes/Messages/Connection/ChannelRequest/PseudoTerminalInfoTest.cs
+++ b/src/Renci.SshNet.Tests/Classes/Messages/Connection/ChannelRequest/PseudoTerminalInfoTest.cs
@@ -1,13 +1,75 @@
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Renci.SshNet.Tests.Common;
-
-namespace Renci.SshNet.Tests.Classes.Messages.Connection
-{
-    /// <summary>
-    /// Represents "pty-req" type channel request information
-    /// </summary>
-    [TestClass]
-    public class PseudoTerminalRequestInfoTest : TestBase
-    {
-    }
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Renci.SshNet.Common;
+using Renci.SshNet.Messages.Connection;
+using Renci.SshNet.Tests.Common;
+
+namespace Renci.SshNet.Tests.Classes.Messages.Connection
+{
+    /// <summary>
+    /// Represents "pty-req" type channel request information
+    /// </summary>
+    [TestClass]
+    public class PseudoTerminalRequestInfoTest : TestBase
+    {
+        private string environmentVariable;
+        private uint columns;
+        private uint rows;
+        private uint width;
+        private uint height;
+        IDictionary<TerminalModes, uint> terminalModeValues;
+        private byte[] _environmentVariableBytes;
+
+        [TestInitialize]
+        public void Init()
+        {
+            var random = new Random();
+
+            environmentVariable = random.Next().ToString(CultureInfo.InvariantCulture);
+            columns = (uint) random.Next(0, int.MaxValue);
+            rows = (uint) random.Next(0, int.MaxValue);
+            width = (uint) random.Next(0, int.MaxValue);
+            height = (uint) random.Next(0, int.MaxValue);
+            terminalModeValues = new Dictionary<TerminalModes, uint>();
+
+
+            _environmentVariableBytes = Encoding.UTF8.GetBytes(environmentVariable);
+        }
+
+        [TestMethod]
+        public void GetBytes_TerminalModeValues_Null()
+        {
+            var target = new PseudoTerminalRequestInfo(environmentVariable, columns, rows, width, height, null);
+
+            var bytes = target.GetBytes();
+
+            var expectedBytesLength = 1; // WantReply
+            expectedBytesLength += 4; // EnvironmentVariable length
+            expectedBytesLength += _environmentVariableBytes.Length; // EnvironmentVariable
+            expectedBytesLength += 4; // Columns
+            expectedBytesLength += 4; // Rows
+            expectedBytesLength += 4; // PixelWidth
+            expectedBytesLength += 4; // PixelHeight
+            expectedBytesLength += 4; // Length of "encoded terminal modes"
+
+            Assert.AreEqual(expectedBytesLength, bytes.Length);
+
+            var sshDataStream = new SshDataStream(bytes);
+
+            Assert.AreEqual(1, sshDataStream.ReadByte()); // WantReply
+//            Assert.AreEqual((uint) _environmentVariableBytes.Length, sshDataStream.ReadUInt32());
+            Assert.AreEqual(environmentVariable, sshDataStream.ReadString(Encoding.UTF8));
+            Assert.AreEqual(columns, sshDataStream.ReadUInt32());
+            Assert.AreEqual(rows, sshDataStream.ReadUInt32());
+            Assert.AreEqual(width, sshDataStream.ReadUInt32());
+            Assert.AreEqual(height, sshDataStream.ReadUInt32());
+            Assert.AreEqual(0, sshDataStream.ReadUInt32());
+
+            Assert.IsTrue(sshDataStream.IsEndOfData);
+        }
+    }
 }
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