mongo tests updated

[anubhav-sharma13]

Description

In our previous iteration, we refactored multiple test cases for both mongo and postgres. So this PR is for removing and checking the tests from individual files.

[codecov]

Codecov Report

Merging #103 (7925f6e) into main (9383836) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main     #103   +/-   ##
=========================================
  Coverage     77.06%   77.06%           
  Complexity      511      511           
=========================================
  Files            84       84           
  Lines          2586     2586           
  Branches        254      254           
=========================================
  Hits           1993     1993           
  Misses          432      432           
  Partials        161      161           

Flag	Coverage Δ
integration	77.06% <ø> (ø)
unit	49.53% <ø> (ø)

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[anubhav-sharma13]

@kotharironak please review