Labels: testing, priority:critical
Body:
Problem
No #[test] exists anywhere in wpi-token, mock-usdc (pre-removal), or mock-amm.
Proposed fix
Add unit tests for: initialize (double-init rejected), mint/burn (admin-only enforced), transfer/transfer_from (insufficient balance/allowance), pause gating, and an end-to-end deposit→mint→transfer→burn flow using soroban-sdk testutils.
Acceptance criteria
80% line coverage on wpi-token
Overflow/edge-case tests included
CI (Issue 11) runs these on every PR
Labels: testing, priority:critical
Body:
Problem
No #[test] exists anywhere in wpi-token, mock-usdc (pre-removal), or mock-amm.
Proposed fix
Add unit tests for: initialize (double-init rejected), mint/burn (admin-only enforced), transfer/transfer_from (insufficient balance/allowance), pause gating, and an end-to-end deposit→mint→transfer→burn flow using soroban-sdk testutils.
Acceptance criteria