public function testPrintAsJson_usingSlimVersion_shouldReturnSimpleJson()
 {
     $object = 'EmpresaConf';
     $property = 'descricao';
     $value1 = 'Hosanna';
     $value2 = 'Hosanna Tecnologia';
     $diff = new Diff($object, $property, $value1, $value2);
     $expectedJson = sprintf('{"%s%s%s":["%s","%s"]}', $object, Diff::SEPARATOR, $property, $value1, $value2);
     $this->assertEquals($expectedJson, $diff->printAsJson(true));
 }