added test for findAndModify if no item in collection and test for eval

model/MongoStatement.php

@@ -135,6 +135,7 @@ class MongoStatement extends DbStatement
      */
     protected function driverExecute($request)
     {
+        $this->result = false;
         $mongo = $this->driver->getConnection();
         if ($mongo instanceof Mongo) {
             if (DEBUG) {

tests/model/MongoDriverTest.php

@@ -369,6 +369,41 @@ class MongoDriverTest extends PHPUnit_Framework_TestCase
      * @runInSeparateProcess
      * @group Mongo
      */
+    public function testFindAndModifyNoItem()
+    {
+        if (!defined('DEBUG')) {
+            define('DEBUG', false);
+        }
+
+        $mongo = new MongoDriver($this->conf);
+
+        $this->assertEquals(10, $mongo->get('items', array('name' => 'bread'))->fetch()->quantity);
+        $result = $mongo->findAndModify('items', array('name' => 'breading'), array('$set' => array('quantity' => 20)))->fetch();
+        $this->assertFalse($result);
+        $this->assertEquals(10, $mongo->get('items', array('name' => 'bread'))->fetch()->quantity);
+    }
+
+    /**
+     * @runInSeparateProcess
+     * @group Mongo
+     */
+    public function testEvalCommand()
+    {
+        if (!defined('DEBUG')) {
+            define('DEBUG', false);
+        }
+        $mongo = new MongoDriver($this->conf);
+        $result = $mongo->command('items', array('$eval' => 'function() { return db.items.count();}'));
+        $this->assertEquals(5, $result->fetch());
+        $this->assertEquals(5, $mongo->count('items'));
+        $result = $mongo->command('items', array('$eval' => 'function() { return "HELLO!";}'));
+        $this->assertEquals("HELLO!", $result->fetch());
+    }
+
+    /**
+     * @runInSeparateProcess
+     * @group Mongo
+     */
     public function testEval()
     {
         if (!defined('DEBUG')) {

tests/model/MongoStatementTest.php

@@ -245,10 +245,10 @@ class MongoStatementTest extends PHPUnit_Framework_TestCase
         $this->request
                 ->expects($this->once())
                 ->method('execute')
-                ->will($this->returnValue(array('some' => 'val')));
+                ->will($this->returnValue(array('retval' => 'val')));
 
         $this->stmt->execute();
-        $this->assertFalse($this->stmt->fetch());
+        $this->assertEquals('val', $this->stmt->fetch());
     }
 
     /**