54 lines
2.4 KiB
Markdown
54 lines
2.4 KiB
Markdown
# shout
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Transcript-based shell integration test runner. Bun + TypeScript.
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## Commands
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- `bun test` — run unit tests
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- `bunx tsc --noEmit` — type check
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- `bun run src/cli/index.ts test [files...]` — run shout CLI
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- `-u, --update` — rewrite `.shout` files with actual output
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- `-k, --keep` — keep temp directories after run
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- `--clean-env` — start with empty environment
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- `--path <path>` — prepend to `$PATH` (repeatable)
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- `--timeout <dur>` — per-command timeout (default `10s`)
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- `-v, --verbose` — print each command as it runs
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- `--port-from <n>` — auto-assign `$PORT` starting from n
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- `--parallel` — run files in parallel
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## Architecture
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- `src/parse.ts` — parses `.shout` files into `ShoutFile` (list of `Command`)
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- `src/run.ts` — executes commands via `Bun.spawn(["/bin/sh"], { detached: true })`, captures output with sentinels
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- `src/match.ts` — wildcard-aware output matching and diff generation
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- `src/format.ts` — evaluates pass/fail, formats failures and summary
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- `src/update.ts` — rewrites `.shout` files with actual output (`--update` mode)
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- `src/duration.ts` — parses duration strings (`10s`, `500ms`, `1m`)
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- `src/cli/index.ts` — CLI entry point via `commander`
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- `src/index.ts` — barrel exports
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- `web/index.html` — web documentation page
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## .shout file format
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- `$ ` prefix = command to execute
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- Lines between commands = expected output (stdout+stderr merged)
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- `...` on its own line = multi-line wildcard (matches zero or more lines)
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- `...` inline = matches any characters on that line
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- `[N]` on last line of expected output = assert exit code N
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- `[*]` = assert any non-zero exit code; default expects 0
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- `#` after a command = comment (stripped); `#` in expected output is literal
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- `@env KEY=VALUE` before first command = set environment variable
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- `@setup path.shout` before first command = prepend commands (and `@env`) from another file
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- Setup files cannot themselves contain `@setup` (no nesting)
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- User file `@env` overrides setup file `@env`
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- Setup command failures abort the test with an error
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- Each file runs in a fresh temp dir with a single `/bin/sh` session
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- `$HOME` and `$SHOUT_DIR` are set to the temp dir automatically
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- stdout and stderr are merged (`exec 2>&1`)
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## Style
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- Strict TypeScript, Bun runtime
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- No classes — plain functions and types
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- Tests in `src/*.test.ts`, example `.shout` files in `test/`
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