public function testUpdateGroup()
{
$builder = $this->_objectManager->create('\\Magento\\Customer\\Service\\V1\\Data\\CustomerGroupBuilder');
$group = $builder->setId(null)->setCode('New Group')->setTaxClassId(3)->create();
$groupId = $this->_groupService->saveGroup($group);
$this->assertNotNull($groupId);
$newGroup = $this->_groupService->getGroup($groupId);
$this->assertEquals($groupId, $newGroup->getId());
$this->assertEquals($group->getCode(), $newGroup->getCode());
$this->assertEquals($group->getTaxClassId(), $newGroup->getTaxClassId());
$updates = $builder->setId($groupId)->setCode('Updated Group')->setTaxClassId(3)->create();
$newId = $this->_groupService->saveGroup($updates);
$this->assertEquals($newId, $groupId);
$updatedGroup = $this->_groupService->getGroup($groupId);
$this->assertEquals($updates->getCode(), $updatedGroup->getCode());
$this->assertEquals($updates->getTaxClassId(), $updatedGroup->getTaxClassId());
}
