add tests for emitter

2013-04-30 04:27:23 +09:00
parent 7124af51af
commit 8b7b2125fc
2 changed files with 230 additions and 1 deletions
--- a/src/main/java/com/github/nkzawa/emitter/Emitter.java
+++ b/src/main/java/com/github/nkzawa/emitter/Emitter.java
@@ -80,7 +80,8 @@ public class Emitter {

    public List<Listener> listeners(String event) {
        ConcurrentLinkedQueue<Listener> callbacks = this.callbacks.get(event);
-        return new ArrayList<Listener>(callbacks);
+        return callbacks != null ?
+                new ArrayList<Listener>(callbacks) : new ArrayList<Listener>();
    }

    public boolean hasListeners(String event) {