System.Collections.Tests.QueueTests.DebuggerAttribute C# (CSharp) Method

        public static void DebuggerAttribute()
        {
            DebuggerAttributes.ValidateDebuggerDisplayReferences(new Queue());

            var testQueue = new Queue();
            testQueue.Enqueue("a");
            testQueue.Enqueue(1);
            testQueue.Enqueue("b");
            testQueue.Enqueue(2);
            DebuggerAttributes.ValidateDebuggerTypeProxyProperties(testQueue);

            bool threwNull = false;
            try
            {
                DebuggerAttributes.ValidateDebuggerTypeProxyProperties(typeof(Queue), null);
            }
            catch (TargetInvocationException ex)
            {
                threwNull = ex.InnerException is ArgumentNullException;
            }

            Assert.True(threwNull);
        }