Feature/erc1155 tests

[aapsi]

ERC1155 Test Suite Implementation

Summary

Comprehensive test suite for ERC1155 with 147 passing tests covering all ERC-1155 standard requirements.

Changes

• ✅ 75 tests for LibERC1155 internal functions
• ✅ 72 tests for ERC1155Facet public interface
• ✅ Test harness following ERC721 pattern (no setApprovalForAll() in lib)
• ✅ Receiver mock with 5 error scenarios (revert, panic, custom error, etc.)
• ✅ Data parameter forwarding tests
• ✅ Fuzz testing for transfers and approvals

Test Coverage

Category	Tests
Minting (single/batch)	✅
Burning (single/batch)	✅
Transfers (single/batch)	✅
Approvals	✅
Receiver hooks	✅
URI management	✅
Edge cases	✅

Architecture

Harness Pattern

LibERC1155Harness.sol matches ERC721 pattern:

• Wraps library internal functions: mint(), burn(), safeTransferFrom(), etc.
• Provides test helpers with direct storage access: setApprovalForAll(), balanceOf()

Mock Implementation

ERC1155ReceiverMock.sol provides comprehensive receiver testing:

• Configurable return values for both onERC1155Received and onERC1155BatchReceived
• 5 error types: None, RevertWithoutMessage, RevertWithMessage, CustomError, Panic
• Event emission with data parameter for verification
• Immutable storage for gas efficiency
• Tests all ERC-1155 receiver hook scenarios

Test Quality

All tests verify actual behavior:

• Balance changes before/after operations
• Event emission with correct parameters
• Error messages and selector matching
• Authorization checks
• Receiver hook responses and data forwarding

ERC-1155 Compliance

✅ Fully compliant - ERC1155Facet correctly implements all required public interface functions with proper data parameter forwarding.

Test Results

forge test --match-path "test/token/ERC1155/ERC1155/*.sol"
✅ 147 tests passing (0 failed, 0 skipped)
├── LibERC1155Test: 75 tests
└── ERC1155FacetTest: 72 tests

Files

test/token/ERC1155/ERC1155/LibERC1155.t.sol
test/token/ERC1155/ERC1155/ERC1155Facet.t.sol
test/token/ERC1155/ERC1155/harnesses/LibERC1155Harness.sol
test/token/ERC1155/ERC1155/mocks/ERC1155ReceiverMock.sol

Linked Issue: #148

[github-actions]

Coverage Report

Metric	Coverage	Details
Lines	65%	960/1482 lines
Functions	72%	184/256 functions
Branches	53%	146/273 branches

Last updated: Mon, 03 Nov 2025 06:41:53 GMT for commit 17b4fec

[github-actions]

Gas Report

No gas usage changes detected between main and feature/erc1155-tests.

All functions maintain the same gas costs. ✅

Last updated: Mon, 03 Nov 2025 06:42:12 GMT for commit 17b4fec

[mudgen]

@aapsi Thanks very much for these test! @adamgall Do you want to review these tests?

[aapsi]

Hi @mudgen
I will update the testcases as well, once I push the ERC1155 extension facet

[mudgen]

@aapsi Thanks for your work!