Write Fuzz Tests for Quest Completion Logic

[Mkalbani]

Description

The quest completion function handles reward calculations and player validation but lacks fuzz testing for edge cases.

Expected Behavior

Foundry fuzz tests should stress-test the completion logic with randomized inputs.

Scope

• Reward calculation edge cases
• Re-entrancy scenarios
• Invalid quest IDs and player addresses
• Boundary conditions on timestamps and amounts

Acceptance Criteria

• Fuzz tests written using Foundry
• No failures across minimum 10,000 runs
• Re-entrancy guard confirmed effective under fuzz

[wokedi]

@wokedi has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi maintainer, i have gone through the task description and will like to work on this please. ETA: 8hours. Thank you

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

[millicentogalanya]

@millicentogalanya has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi, I’d like to work on this task. I have experience writing security focused smart contract tests and can implement comprehensive Foundry fuzz tests for quest completion logic, including edge cases, invalid inputs, and re-entrancy scenarios. I’ll ensure the tests are deterministic, thorough, and stable across large fuzzing runs.

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