Add error handling in sign-up tests and code correction.

[Vividh25]

Error Handling

Currently if the test user account in the config file is wrong or if RDS is already registered as an OAuth application to the test account, the test fails and doesn't show any messages which can explain the error.

Code Correction

The module.exports in this line:3 exports the whole variable and the value of the exported variable is being treated as an object here line:7. This is causing some problems in the test so export the variable as an object.

[ghosharnab969]

I would like to take up the task!