implemented rpop

lib/eventvat.js

@@ -996,7 +996,14 @@
   // Remove and get the last element in a list
   //
   EventVat.prototype.rpop = function(key) {
-    throw new Error('Not implemented.');
+    if (this.type(key) === 'list') {
+      var value = this.hash[key].value.pop();
+      this.emit('rpop ' + key, value);
+      this.emit('rpop', key, value);
+      return value;
+    } else {
+      return false;
+    }
   };
 
   //

test/events-test.js

@@ -1129,5 +1129,26 @@ module.exports = simpleEvents({
     vat.die();
     test.done();
   },
+  'Raise event on `rpop` method invokation': function(test) {
+
+    var vat = EventVat();
+
+    vat.on('rpop', function(key, value) {
+      test.equal(key, 'mylist');
+      test.equal(value, 'two');
+    });
+
+    vat.on('rpop mylist', function(value) {
+      test.equal(value, 'two');
+    });
+
+    vat.rpush('mylist', 'one');
+    vat.rpush('mylist', 'two');
+    vat.rpop('mylist');
+
+    test.expect(3);
+    vat.die();
+    test.done();
+  },
 
 });

test/methods-test.js

@@ -821,6 +821,23 @@ this.methodSuite = {
       test.equal(vat.lindex('mylist', 0), 'two');
       test.equal(vat.lindex('mylist', 1), false);
 
+      vat.die();
+      test.done();
+    },
+    'Invoke `rpop` method and report return value and stored values': function(test) {
+
+      var vat = EventVat();
+
+      vat.rpush('mylist', 'one');
+      vat.rpush('mylist', 'two');
+
+      test.equal(vat.lindex('mylist', 0), 'one');
+      test.equal(vat.lindex('mylist', 1), 'two');
+      test.equal(vat.rpop('mylist'), 'two');
+
+      test.equal(vat.lindex('mylist', 0), 'one');
+      test.equal(vat.lindex('mylist', 1), false);
+
       vat.die();
       test.done();
     },