tests for src/lib/resolvers/Subscription/messageSentToGroupChat.ts

[KrutikaBhatt]

What kind of change does this PR introduce?

Issue Number: #889

Fixes #889

Description:
Written tests for messageSentToGroupChat subscription by creating a mock test GroupChat Message.

Did you add tests for your changes? : Yes

Snapshots/Videos:
The coverage obtained is 100%

Other information
The subscription uses withFilter which has a filter function parameter that returns true if the user in the GroupChat is currentUser. The code block is the same just converted into a separate function for testing and used in the subscription

Have you read the contributing guide? Yes

[codecov]

Codecov Report

Merging #1113 (064571c) into develop (83f22af) will increase coverage by 0.42%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop    #1113      +/-   ##
===========================================
+ Coverage    94.70%   95.12%   +0.42%     
===========================================
  Files          165      167       +2     
  Lines         9889     9983      +94     
  Branches       802      812      +10     
===========================================
+ Hits          9365     9496     +131     
+ Misses         523      486      -37     
  Partials         1        1              

Impacted Files	Coverage Δ
...c/resolvers/Subscription/messageSentToGroupChat.ts	100.00% <100.00%> (+100.00%)	⬆️
src/resolvers/Mutation/createPost.ts	100.00% <0.00%> (ø)
src/resolvers/Mutation/adminRemovePost.ts
src/resolvers/Organization/image.ts	100.00% <0.00%> (ø)
src/resolvers/Organization/pinnedPosts.ts	100.00% <0.00%> (ø)
src/resolvers/Mutation/togglePostPin.ts	100.00% <0.00%> (ø)
src/resolvers/Mutation/removePost.ts	100.00% <0.00%> (+8.21%)	⬆️

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[Kevoniat]

looks good to me