test: add comprehensive tests for custom Stellar token support

[greatest0fallt1me]

Description:

Write comprehensive test cases for custom token bet placement and payouts.

Requirements and Context:

• Must achieve minimum 95% test coverage
• Should test bet and payout with custom token
• Should test balance and transfer correctness
• Should test insufficient balance and invalid token
• Should test mixed XLM and token if both supported
• Should test approval/allowance if applicable

Suggested Execution:

1. Fork the repo and create a branch

   git checkout -b test/custom-token-support-tests

2. Implement changes

   • Write tests: src/test.rs (custom token tests with mock token)
   • Validate test coverage

3. Test and commit

   • Run tests with coverage; include test output

Example Commit Message:

test: add comprehensive tests for custom Stellar token support

Guidelines:

• Minimum 95 percent test coverage
• Clear documentation
• Timeframe: 72 hours

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[Georgechisom]

@Georgechisom has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hi, I love to work on this issue and deliver an excellent result, please help assign it to me.

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

[DevAyomi]

@DevAyomi has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hi Maintainer.

I'm Gbolagade Winner, a full-stack engineer, and I'd love to work on this issue. I'm confident I can deliver a quality solution.

Thanks!

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

[drips-wave]

Congratulations, @DevAyomi! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on January 31, 2026.

🧑‍💻 @DevAyomi: 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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