nginx test script

[rennergade]

I put together this nginx test script since it doesn't seem like nginx is packaged with an easy way to test.

nginx/test_nginx.sh — Self-contained test runner with 9 test cases:

1. GET index page — verifies HTTP 200 and "Welcome to nginx" in body
2. HEAD request — verifies 200 and Content-Length header presence
3. 404 error page — fetches nonexistent path, expects 404
4. Static file serving — creates a temp file in html/, fetches it, verifies content
5. Content-Length validation — compares header value to actual body size
6. POST method — sends POST, accepts 200 or 405 (just verifies no crash)
7. Multiple sequential requests — 10 requests in a loop, all must return 200
8. Keepalive connection reuse — two requests via curl, checks for connection reuse
9. Concurrent requests — 5 parallel curls, all must return 200

Key features:

• Auto-discovers nginx binary (cwasm > opt.wasm > wasm) and Lind runtime (lind-wasm > lind-boot > lind_run)
• Configurable port via $TEST_PORT (default 8080) and startup timeout via $STARTUP_TIMEOUT
• Generates a temp nginx.conf and working directory, cleaned up via trap on exit
• Polls with curl until nginx is ready (or times out with error + log dump)
• Reports [PASS]/[FAIL] per test with a summary, exits 0 on all pass, 1 on any failure

Makefile — Added test-nginx target (depends on nginx build):
make test-nginx