Add post view model and add post page test

[Kushalrock]

The Talawa code base needs to be 100% reliable. This means we need to have 100% test code coverage.

The tests need to be written for add post view model and add post page screen.

When complete, all methods, classes and/or functions in the file will need to be tested.
Our test/ folder has the same structure as the lib folder. Place your test file in the equivalent folder under test/. You may need to create the appropriate directory structure to do this.

Please refer to this issue on how to implement these tests correctly:(#1217)

[Kushalrock]

@palisadoes

[github-actions]

This issue did not get any activity in the past 10 days and will be closed in 365 days if no update occurs. Please check if the develop branch has fixed it and report again or close the issue.

[palisadoes]

Unassigning due to inactivity and no submitted PR. Others need to get a chance. Please let us know whether you want to be reassigned before someone else requests assignment or select another issue.

[Kushalrock]

@palisadoes Was out for a couple of days sorry about that. I have worked a little I will wrap this up and give it by 3rd or 4th April.

[github-actions]

This issue did not get any activity in the past 10 days and will be closed in 365 days if no update occurs. Please check if the develop branch has fixed it and report again or close the issue.

[palisadoes]

Unassigning due to inactivity and no submitted PR. Others need to get a chance. Please let us know whether you want to be reassigned before someone else requests assignment or select another issue.

[github-actions]

This issue did not get any activity in the past 10 days and will be closed in 365 days if no update occurs. Please check if the develop branch has fixed it and report again or close the issue.

[github-actions]

This issue did not get any activity in the past 180 days and thus has been closed. Please check if the newest release or develop branch has it fixed. Please, create a new issue if the issue is not fixed.