Emit end and close event on connection closed

Author: bixuehujin

src/React/MySQL/Connection.php

@@ -156,6 +156,8 @@ public function close($callback = null)
         $this->_doCommand(new QuitCommand($this))
             ->on('success', function () use ($callback) {
                 $this->state = self::STATE_CLOSED;
+                $this->emit('end', [$this]);
+                $this->emit('close', [$this]);
                 if ($callback) {
                     $callback($this);
                 }

tests/React/Tests/ConnectionTest.php

@@ -27,9 +27,21 @@ public function testConnectWithInvalidPass()
 
     public function testConnectWithValidPass()
     {
+        $this->expectOutputString('endclose');
+
         $loop = \React\EventLoop\Factory::create();
         $conn = new Connection($loop, $this->connectOptions );
 
+        $conn->on('end', function ($conn){
+            $this->assertInstanceOf('React\MySQL\Connection', $conn);
+            echo 'end';
+        });
+
+        $conn->on('close', function ($conn){
+            $this->assertInstanceOf('React\MySQL\Connection', $conn);
+            echo 'close';
+        });
+
         $conn->connect(function ($err, $conn) use ($loop) {
             $this->assertEquals(null, $err);
             $this->assertInstanceOf('React\MySQL\Connection', $conn);