Thank you @jasonblais for replying.
Yes test accounts are created using email and password.
Yeah, In the teams page at the top-left it shows the user who logged in right? There when I refresh page I see the another persons name also I am able to change that persons account information like profile_picture.
When other users are not logged in, It works fine. But when another user logged in then when I refresh the page I am logging in as that person. These are the screen shots before and after refreshing.
