public function testGetAll()
 {
     $groupModel = new Group($this->container);
     $this->assertEquals(1, $groupModel->create('B'));
     $this->assertEquals(2, $groupModel->create('A', 'uuid'));
     $groups = $groupModel->getAll();
     $this->assertCount(2, $groups);
     $this->assertEquals('A', $groups[0]['name']);
     $this->assertEquals('uuid', $groups[0]['external_id']);
     $this->assertEquals('B', $groups[1]['name']);
     $this->assertEquals('', $groups[1]['external_id']);
 }