[AUTO-INVOKE] MUST be invoked BEFORE writing or modifying any test files (*.t.sol). Covers test structure, naming conventions, coverage requirements, fuzz testing, and Foundry cheatcodes. Trigger: any task involving creating, editing, or running Solidity tests.
The English summary is being prepared. Showing the original description.
See how to installReview the instructions the agent will receive before you install.
MyToken.sol → MyToken.t.soltest/ directorytest_<feature>_<scenario> for passing tests, testFail_<feature>_<scenario> for expected reverts
test_transfer_revertsWhenInsufficientBalancetest_stake_updatesBalanceCorrectlysetUp() for shared state, no cross-test dependencies--match-test and --match-contract for targeted runsEvery core function must have tests covering:
| Scenario | What to verify |
|---|---|
| Happy path | Standard input → expected output, correct state changes |
| Permission checks | Unauthorized caller → vm.expectRevert with correct error |
| Boundary conditions | Zero values, max values (type(uint256).max), off-by-one |
| Failure scenarios | Every require / revert / custom error path |
| State changes | Storage updates, balance changes, event emissions (vm.expectEmit) |
| Edge cases | Empty arrays, duplicate calls, self-transfers |
| Cheatcode | Usage |
|---|---|
vm.prank(addr) | Next call from addr |
vm.startPrank(addr) | All calls from addr until vm.stopPrank() |
vm.warp(timestamp) | Set block.timestamp |
vm.roll(blockNum) | Set block.number |
vm.deal(addr, amount) | Set ETH balance |
vm.expectRevert(error) | Next call must revert with specific error |
vm.expectEmit(true,true,false,true) | Verify event emission (topic checks) |
vm.record() / vm.accesses() | Track storage reads/writes |
makeAddr("name") | Create labeled address for readable traces |
function testFuzz_<name>(uint256 amount) publicvm.assume() to constrain inputs: vm.assume(amount > 0 && amount < MAX_SUPPLY);forge test --fuzz-runs 10000# Run all tests
forge test
# Run specific test function
forge test --match-test test_transfer
# Run specific test contract
forge test --match-contract MyTokenTest
# Verbose output with full trace
forge test -vvvv
# Gas report
forge test --gas-report
# Fuzz with more runs
forge test --fuzz-runs 10000
# Test coverage
forge coverage
# Coverage with report
forge coverage --report lcov
No reviews yet. Tell others what you thought.
No login needed. Share how it worked for you, ask a question, or note where it did not run.
No comments yet. Be the first to write one.
When the user wants to plan, design, or implement an A/B test or experiment. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," or "hypothesis." For tracking implementation, see analytics-tracking.
The English summary is being prepared. Showing the original description.
Audit and improve web accessibility following WCAG 2.1 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible".
The English summary is being prepared. Showing the original description.
Audit and improve web accessibility following WCAG 2.2 guidelines. Use when asked to "improve accessibility", "a11y audit", "WCAG compliance", "screen reader support", "keyboard navigation", or "make accessible".
The English summary is being prepared. Showing the original description.
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
The English summary is being prepared. Showing the original description.
Head-to-head comparison of coding agents (Claude Code, Aider, Codex, etc.) on custom tasks with pass rate, cost, time, and consistency metrics
The English summary is being prepared. Showing the original description.
Design and optimize AI agent action spaces, tool definitions, and observation formatting for higher completion rates.
The English summary is being prepared. Showing the original description.