test: add comprehensive tests for batch bet placement

[greatest0fallt1me]

Description:

Write comprehensive test cases for batch bet placement atomicity and validation.

Requirements and Context:

• Must achieve minimum 95% test coverage
• Should test all bets succeed
• Should test atomic revert when one bet invalid
• Should test limits and balance across batch
• Should test event emission
• Should test empty batch and max batch size if limited

Suggested Execution:

1. Fork the repo and create a branch

   git checkout -b test/batch-bet-placement-tests

2. Implement changes

   • Write tests: src/test.rs (batch bet tests)
   • Validate test coverage

3. Test and commit

   • Run tests with coverage; include test output

Example Commit Message:

test: add comprehensive tests for batch bet placement

Guidelines:

• Minimum 95 percent test coverage
• Clear documentation
• Timeframe: 48 hours

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This issue has been added to the Stellar Wave Program and is worth 200 Points.

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[Manuel1234477]

@Manuel1234477 has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hi maintainer Can I work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Manuel1234477 to this issue.

[Baskarayelu]

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

I would like to work on this issue. Please assign it to me.

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[Samaro1]

@Samaro1 has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Good day, I would love to handle this issue. I have experience with test writing and would deliver a PR by 12 hours tops

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[drips-wave]

Congratulations, @Manuel1234477! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on January 31, 2026.

🧑‍💻 @Manuel1234477: 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.

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[Obiajulu-gif]

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

This looks familiar and I’d love to work on it — I’ll add a full test suite in src/test.rs for batch bet placement that proves (1) the happy path where all bets succeed, (2) strict atomicity where a single invalid bet causes the entire batch to revert with no partial state changes, (3) correct enforcement of per-batch limits and user balance accounting across multiple bets, (4) correct event emission (count + payload) for successful batches, and (5) edge cases like an empty batch and max batch size (if the contract enforces one). I’ll run the full suite with coverage to hit the 95% minimum, include the output in the PR, and keep tests deterministic and isolated.

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

[anumukul]

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

Hi, I’d like to take this issue and can deliver a fix within 24 hours.
I’ve worked on similar projects before and have relevant experience, so I should be able to handle this efficiently.

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