Updates tests for converter idempotency

[bashir2]

Description of what I changed

Fixes #1003.

E2E test

TESTED:

Please replace this with a description of how you tested your PR beyond the automated e2e/unit tests.

Checklist: I completed these to help reviewers :)

• [x] I have read and will follow the review process.

• [x] I am familiar with Google Style Guides for the language I have coded in.

  No? Please take some time and review Java and Python style guides.

• [x] My IDE is configured to follow the Google code styles.

  No? Unsure? -> configure your IDE.

• [x] I have added tests to cover my changes. (If you refactored existing code that was well tested you do not have to add tests)

• [x] I ran mvn clean package right before creating this pull request and added all formatting changes to my commit.

• [x] All new and existing tests passed.

• [x] My pull request is based on the latest changes of the master branch.

  No? Unsure? -> execute command git pull --rebase upstream master

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 51.34%. Comparing base (478925e) to head (4c6016a).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1205      +/-   ##
============================================
- Coverage     51.37%   51.34%   -0.04%     
  Complexity      711      711              
============================================
  Files            95       95              
  Lines          5886     5886              
  Branches        781      781              
============================================
- Hits           3024     3022       -2     
- Misses         2576     2578       +2     
  Partials        286      286              

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