1 files changed, 75 insertions, 0 deletions
diff --git a/qpid/dotnet/client-010/test/transport/util/SerialTest.cs b/qpid/dotnet/client-010/test/transport/util/SerialTest.cs
new file mode 100644
index 0000000000..772327c3b0
--- /dev/null
+++ b/qpid/dotnet/client-010/test/transport/util/SerialTest.cs
@@ -0,0 +1,75 @@
+/*
+*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements.  See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership.  The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License.  You may obtain a copy of the License at
+*
+*   http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied.  See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*
+*/
+using NUnit.Framework;
+using org.apache.qpid.transport.util;
+
+namespace test.transport.util
+{
+    [TestFixture]
+    public class SerialTest
+    {
+        private static readonly Logger _log = Logger.Get(typeof (SerialTest));
+
+        [Test]
+        ///
+        /// Test the key boundaries where wraparound occurs.
+        ///
+        public void testBoundaries()
+        {
+            Assert.IsTrue(Serial.Gt(1, 0));
+            Assert.IsTrue(Serial.Lt(0, 1));
+
+            Assert.IsTrue(Serial.Gt(int.MaxValue, int.MaxValue - 1));
+            Assert.IsTrue(Serial.Lt(int.MaxValue - 1, int.MaxValue));
+        }
+
+        ///
+        /// Test the first Corollary of RFC 1982
+        /// For any sequence number s and any integer n such that addition of n
+        /// to s is well defined, (s + n) >= s.  Further (s + n) == s only when
+        /// n == 0, in all other defined cases, (s + n) > s.
+        ///
+        public void testCorollary1()
+        {
+            int wrapcount = 0;
+
+            int s = 0;
+
+            for (int i = 0; i < 67108664; i++)
+            {
+                for (int n = 1; n < 4096; n += 512)
+                {
+                    Assert.IsTrue(Serial.Gt(s + n, s));
+                    Assert.IsTrue(Serial.Lt(s, s + n));
+                }
+
+                s += 1024;
+
+                if (s == 0)
+                {
+                    wrapcount += 1;
+                }
+            }
+
+            Assert.IsTrue(wrapcount > 0);
+        }
+    }
+}