[CT-07] Write tests for the resource_credits contract

[yusuftomilola]

Overview

Write a comprehensive test suite for the resource_credits contract in src/test.rs, covering all functions and error paths. Work inside contracts/sandbox/resource_credits/.

Acceptance Criteria

• Test: initialize sets admin and rejects re-initialization
• Test: mint_credits increases balance and total supply
• Test: mint_credits rejects non-admin callers
• Test: transfer_credits moves credits between accounts correctly
• Test: transfer_credits fails with InsufficientBalance
• Test: spend_credits reduces balance and total supply
• Test: spend_credits fails with InsufficientBalance
• Test: expired credits cannot be transferred or spent
• All tests pass with cargo test

[Tinna23]

@Tinna23 has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

can i work on this?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Tinna23 to this issue.

[drips-wave]

Congratulations, @Tinna23! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

🧑‍💻 @Tinna23: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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[drips-wave]

This issue has been completed by @Tinna23 as part of the Stellar Wave Program's 4th Wave 🥳

😎 @Tinna23: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

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