[arifrhm]

Resolves #1

Summary

Adds the three requested unit tests covering core behaviors of Identity.sol:

1. test_agentIdsIncrease: Verifies registering sequential agents increments agentId (1 then 2).
2. test_setRuntimeKeyRejectsZeroAddress: Verifies setting a runtime key to address(0) reverts with ZeroRuntimeKey.
3. test_tokenURIOfUnknownAgentReverts: Verifies calling tokenURI(42) on an unminted agent reverts with UnknownAgent(42).

Verification & Quality Checks

• forge test --match-contract IdentityTest passes (9/9 tests pass).
• forge test passes across full suite (91/91 tests pass).
• forge fmt --check is clean with zero formatting errors.
• Only test/Identity.t.sol modified.

[Viscous106]

If you need more help or talk regarding the changes feel free to ping me .. Great work otherwise just some changes are needed do that ... Thanks

[arifrhm]

All requested review changes have been addressed in commit 159bd38:

1. Global ID Progression: test_agentIdsIncrease now registers the second agent with a distinct operator (operator2) and asserts both global sequential IDs and independent ownership via id.ownerOf(first) and id.ownerOf(second).
2. Runtime Key Rotation Event: Added vm.expectEmit(true, false, false, true) for RuntimeKeyChanged in the rotation test.
3. Unknown Agent Guard: Added sibling test test_setRuntimeKeyRejectsUnknownAgent verifying that rotating a key for an unminted agent ID reverts with IIdentity.UnknownAgent(42).
4. Transfer Key Retention: test_runtimeKeyFollowsTokenTransferOwnership now explicitly asserts that id.runtimeKeyOf(agentId) persists as the seller's key across transferFrom until the new operator performs a rotation.

All 92/92 tests in the suite pass cleanly and forge fmt --check is satisfied!

[OfficialAbhinavSingh]

All three of Yash's review points are addressed: the second agentId test now uses a different operator and checks ownerOf on both, there's a sibling test for setRuntimeKey on an unknown agent plus the RuntimeKeyChanged emit assertion, and the transfer test now asserts runtimeKeyOf post-transfer (documenting current behavior: the key isn't cleared on sale). Checked the new assertions against Identity.sol directly error selectors and call order line up. Ready to merge.

[OfficialAbhinavSingh]

Thanks for working through the feedback so carefully, Arif the updated tests are solid and the transfer-ownership one is a nice catch to have documented either way. Appreciate it.

[Viscous106]

LGTM!! Thanks for this. If you're interested in writing the actual contract fix for the transfer case (#16), let me know there and I'll assign it to you.