Personal profiles can be an effective way of assessing whether a candidate's personality matches that of a team member or other organization. Companies often hire consultants to understand what type of person is best for their work environment.
When doing this type of assessment, they don't ask the candidate to take a private test, even though they may show it. The test can fail, and even if the candidate does not have the most suitable personality for the role offered and does not meet the requirements of the organization, they have not passed the personality test. There are many companies like Discoveryourpersonality that provide services of work personality test.
This assessment is what happens when a candidate fills out his profile. Tests may be needed for an aptitude questionnaire. Applicants may or may not pass aptitude tests such as problem solving or literacy.
In any situation where a candidate is asked to fill out a questionnaire, it is important to get the scene right. Calling it a "test" immediately ruined the scene for the candidate.
When managed by an inexperienced employer, applicants often guess what position they are applying for. This leads to bad results for everyone. Companies lose because the candidate doesn't "really support" them and the person risks getting a job they don't want.