From e6966e05f508d1d2633b9ff327fea912b12555ac Mon Sep 17 00:00:00 2001
From: Vojta Jina
Date: Tue, 25 Sep 2012 01:09:26 -0700
Subject: fix(Scope): allow removing a listener during event

---
 test/ng/rootScopeSpec.js | 68 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

(limited to 'test/ng/rootScopeSpec.js')

diff --git a/test/ng/rootScopeSpec.js b/test/ng/rootScopeSpec.js
index 9830d981..ee7fb796 100644
--- a/test/ng/rootScopeSpec.js
+++ b/test/ng/rootScopeSpec.js
@@ -708,6 +708,74 @@ describe('Scope', function() {
       });
 
 
+      it('should allow removing event listener inside a listener on $emit', function() {
+        var spy1 = jasmine.createSpy('1st listener');
+        var spy2 = jasmine.createSpy('2nd listener');
+        var spy3 = jasmine.createSpy('3rd listener');
+
+        var remove1 = child.$on('evt', spy1);
+        var remove2 = child.$on('evt', spy2);
+        var remove3 = child.$on('evt', spy3);
+
+        spy1.andCallFake(remove1);
+
+        expect(child.$$listeners['evt'].length).toBe(3);
+
+        // should call all listeners and remove 1st
+        child.$emit('evt');
+        expect(spy1).toHaveBeenCalledOnce();
+        expect(spy2).toHaveBeenCalledOnce();
+        expect(spy3).toHaveBeenCalledOnce();
+        expect(child.$$listeners['evt'].length).toBe(3); // cleanup will happen on next $emit
+
+        spy1.reset();
+        spy2.reset();
+        spy3.reset();
+
+        // should call only 2nd because 1st was already removed and 2nd removes 3rd
+        spy2.andCallFake(remove3);
+        child.$emit('evt');
+        expect(spy1).not.toHaveBeenCalled();
+        expect(spy2).toHaveBeenCalledOnce();
+        expect(spy3).not.toHaveBeenCalled();
+        expect(child.$$listeners['evt'].length).toBe(1);
+      });
+
+
+      it('should allow removing event listener inside a listener on $broadcast', function() {
+        var spy1 = jasmine.createSpy('1st listener');
+        var spy2 = jasmine.createSpy('2nd listener');
+        var spy3 = jasmine.createSpy('3rd listener');
+
+        var remove1 = child.$on('evt', spy1);
+        var remove2 = child.$on('evt', spy2);
+        var remove3 = child.$on('evt', spy3);
+
+        spy1.andCallFake(remove1);
+
+        expect(child.$$listeners['evt'].length).toBe(3);
+
+        // should call all listeners and remove 1st
+        child.$broadcast('evt');
+        expect(spy1).toHaveBeenCalledOnce();
+        expect(spy2).toHaveBeenCalledOnce();
+        expect(spy3).toHaveBeenCalledOnce();
+        expect(child.$$listeners['evt'].length).toBe(3); //cleanup will happen on next $broadcast
+
+        spy1.reset();
+        spy2.reset();
+        spy3.reset();
+
+        // should call only 2nd because 1st was already removed and 2nd removes 3rd
+        spy2.andCallFake(remove3);
+        child.$broadcast('evt');
+        expect(spy1).not.toHaveBeenCalled();
+        expect(spy2).toHaveBeenCalledOnce();
+        expect(spy3).not.toHaveBeenCalled();
+        expect(child.$$listeners['evt'].length).toBe(1);
+      });
+
+
       describe('event object', function() {
         it('should have methods/properties', function() {
           var event;
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