    public function testDestroy()
    {
        $collection = $this->createMongoCollectionMock();

        $this->mongo->expects($this->once())
            ->method('selectCollection')
            ->with($this->options['database'], $this->options['collection'])
            ->will($this->returnValue($collection));

        $collection->expects($this->once())
            ->method('remove')
            ->with(array($this->options['id_field'] => 'foo'));

        $this->assertTrue($this->storage->destroy('foo'));
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.