24. Upgrade Simulation Test Harness (Golden State Migration)

[Cedarich]

Status: Open (Wave 4 – lifecycle)
Labels: Contract, Testing, Admin, wave4
Complexity: High (200 points)
Summary
Create a repeatable test harness that deploys vN, populates realistic state, upgrades to vN+1, and validates all invariants and data integrity.
Tasks

• Define a “golden state” fixture covering escrows, disputes, fees, nonces.
• Implement upgrade flow in tests and verify schema migrations.
• Assert invariants post-upgrade (balances, states, event compatibility).
• Add regression tests for known migration pitfalls.
  Acceptance Criteria
• Upgrade tests can run locally and deterministically.
• No data loss or corruption across migrations.
• Invariants are validated with clear failure messages.

[T-kesh]

@T-kesh has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I'd like to work on this

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

[titilayo967]

@titilayo967 has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hi Maintainer! Please assign me issue #310—I have experience building deterministic test harnesses for smart contract upgrades and can implement a complete "golden state" migration framework that deploys, populates realistic state, upgrades, and validates all invariants and data integrity with clear failure messaging.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @titilayo967 to this issue.

[drips-wave]

Congratulations, @titilayo967! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

🧑‍💻 @titilayo967: 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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