Add a test to make what we already do apparent.

Author: Simon MacMullen

test/src/com/rabbitmq/client/test/functional/BindToDefaultExchange.java

@@ -0,0 +1,19 @@
+package com.rabbitmq.client.test.functional;
+
+import com.rabbitmq.client.test.BrokerTestCase;
+
+import java.io.IOException;
+
+/**
+ * See bug 21843. It's not obvious this is the right thing to do, but it's in
+ * the spec.
+ */
+public class BindToDefaultExchange extends BrokerTestCase {
+    public void testBindToDefaultExchange() throws IOException {
+        String queue = channel.queueDeclare().getQueue();
+        channel.queueBind(queue, "", "foobar");
+        basicPublishVolatile("", "foobar"); // Explicit binding
+        basicPublishVolatile("", queue); // Implicit binding
+        assertDelivered(queue, 2);
+    }
+}

test/src/com/rabbitmq/client/test/functional/FunctionalTests.java

@@ -58,6 +58,7 @@ public static TestSuite suite() {
         suite.addTestSuite(QueueExclusivity.class);
         suite.addTestSuite(InvalidAcks.class);
         suite.addTestSuite(InvalidAcksTx.class);
+        suite.addTestSuite(BindToDefaultExchange.class);
         return suite;
     }
 }