added test for Mongo::addCondition method

tests/model/MongoModelTest.php

@@ -333,6 +333,42 @@ class MongoModelTest extends PHPUnit_Framework_TestCase
         $this->assertSame(1, $this->method_count->invoke($this->model, array('name' => 'testbread')));
     }
 
+    /**
+     * @runInSeparateProcess
+     * @group Mongo
+     */
+    public function testAddCondition()
+    {
+        Config::set('DEBUG', false);
+
+        $model = new ReflectionClass('MongoModel');
+        $method = $model->getMethod('addCondition');
+        $method->setAccessible(true);
+
+        $query = array();
+        $result = $method->invokeArgs($this->model, array(&$query, 'name', 'tony'));
+        $this->assertSame(array('name' => 'tony'), $query);
+        $this->assertSame($this->model, $result);
+    }
+
+    /**
+     * @runInSeparateProcess
+     * @group Mongo
+     */
+    public function testAddConditionEmptyValue()
+    {
+        Config::set('DEBUG', false);
+
+        $model = new ReflectionClass('MongoModel');
+        $method = $model->getMethod('addCondition');
+        $method->setAccessible(true);
+
+        $query = array();
+        $method->invokeArgs($this->model, array(&$query, 'name', false));
+        $this->assertEmpty($query);
+        $method->invokeArgs($this->model, array(&$query, 'name', null));
+        $this->assertEmpty($query);
+    }
     public function tearDown()
     {
         $conf = array('driver' => 'MongoDriver', 'hostname' => 'localhost', 'database' => 'test', 'username' => 'test', 'password' => '1234', 'port' => 27017);