Add unit tests for sell event fields matching the sell-path formula output

[Chucks1093]

Summary

The sell event should emit a proceeds field equal to the bonding curve sell price minus creator and protocol fees. Unit tests should verify this value is computed correctly at several supply steps and that it matches the formula output independently.

Scope

• Test sell event proceeds at supply step 5 (selling back from 5 to 4)
• Test sell event proceeds at supply step 10
• For each, compute expected proceeds independently from the formula and assert equality
• Assert proceeds is always less than the raw sell price (fees deducted)

Acceptance Criteria

• proceeds correct at supply step 5
• proceeds correct at supply step 10
• Expected values computed independently from the formula
• proceeds always less than the raw sell price

ETA: 12 hours

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[aabxtract]

@aabxtract has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I’d like to work on this project. I’m a seasoned Fullstack developer, well-versed in using both TypeScript and JavaScript, TailwindCSS and ExpressJS for database coordination, testing, and other practical use cases. I work quickly and can deliver in a short time.

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[dorismaduegbunam]

@dorismaduegbunam has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Gm Chief, I would love to take on this issue. I'm a software engineer. and i'm confident I can resolve this issue

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[HassanKorey]

@HassanKorey has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer, kindly assign me this issue

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[payfoxX]

@Myart352 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello AccessLayer team,

I'd like to apply for this issue.

After reviewing the requirements, I understand that the objective is to verify the correctness of the sell event by ensuring its proceeds field matches the expected net payout after creator and protocol fees are deducted from the raw bonding curve sell price. These tests will provide confidence that the emitted event accurately reflects the contract's economic behavior.

My implementation approach would be to add focused unit tests covering the required supply levels, specifically validating sales from supply step 5 and supply step 10. For each scenario, I'll compute the expected proceeds independently from the contract's emitted event values using the documented bonding curve formula and fee calculations, then compare those independently derived results against the event payload. This approach helps ensure the tests validate the implementation rather than simply reproducing it.

In addition to verifying the exact proceeds values, I'll assert that the emitted proceeds are always lower than the raw sell price as expected after fee deductions, providing additional coverage for the fee calculation path.

Finally, I'll ensure the tests are deterministic, easy to understand, and consistent with the project's existing testing conventions, providing reliable regression coverage for future changes to the bonding curve or fee logic.

Thank you for considering my application.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Myart352 to this issue.

[drips-wave]

Congratulations, @dorismaduegbunam! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign | FWC26 campaign!

@dorismaduegbunam's PR #592 was approved and merged by @Chucks1093.

🏆 @dorismaduegbunam: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (236 total points). Track your full progress on GrantFox.

👏 Great work, @dorismaduegbunam! Keep contributing to accesslayerorg.

[drips-wave]

This issue has been completed by @dorismaduegbunam as part of the Stellar Wave Program's 7th Wave 🥳

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