chore: add more tests to Formbricks Api Service

[mattinannt]

This pull request adds three new test cases to the FormbricksApiServiceInstrumentedTest class to improve the robustness and reliability of the FormbricksApiService by covering additional edge cases.

New test cases added:

• Error handling for null attributes in postUser:

  • Added testPostUser_withNullAttributes_handlesErrorGracefully to ensure the postUser method handles cases where user attributes are null without crashing.

• Robustness of multiple initializations:

  • Added testInitialize_multipleTimes_noCrash to verify that calling initialize multiple times with different configurations does not result in a crash or exception.

• Behavior before initialization:

  • Added testGetEnvironmentStateObject_beforeInitialize_returnsFailure to confirm that calling getEnvironmentStateObject before initializing the service fails gracefully with an appropriate exception (UninitializedPropertyAccessException).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud