- add test case (no stack available)

Test.LightweightIocContainer/IocContainerRecursionTest.cs

@@ -125,6 +125,14 @@ namespace Test.LightweightIocContainer
             Assert.AreEqual(message, exception.Message);
         }
 
+        [Test]
+        public void TestCircularDependencyExceptionNoStack()
+        {
+            CircularDependencyException circularDependencyException = new CircularDependencyException(typeof(IFoo), null);
+            string message = $"Circular dependency has been detected when trying to resolve `{typeof(IFoo)}`.\n";
+            Assert.AreEqual(message, circularDependencyException.Message);
+        }
+
         [Test]
         public void TestNonCircularDependencies()
         {