Roblox Unit Testing

Canonical guidance

Before writing or running tests, invoke the Roblox Studio MCP skill tool with skill_name: "rbx-unit-test" and follow the returned Roblox-authored instructions.

If retrieval fails, read references/testing-principles.md.

Select and inspect

1. Call list_roblox_studios and explicitly select the correct place before edits or test execution.
2. Use script_search, script_grep, script_read, search_game_tree, and inspect_instance to find the module, callers, current specs, and runner.
3. Detect Jest-Lua, TestEZ, or another established test convention before creating anything.
4. Conform to the existing framework, naming, placement, and runner. Never install Wally or missing dependencies without explicit authorization.
5. Use the Roblox-authored built-in harness only when no framework exists.

Test design