feat: add test.sh

A simplistic test to test aria.js output.
Runs respec before and after copying aria.js changes.

NOTE: Assumes there's a copy of w3c/aria in ../aria/

test.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# NOTE: Assumes there's a copy of w3c/aria in ../aria/
+
+echo "Run respec on ../aria/index.html to generate 'before.html'"
+npx respec --src ../aria/index.html --out before.html
+echo "Copy ./script/aria.js to ../aria/common/script/"
+cp ./script/aria.js ../aria/common/script/.
+echo "Run respec on ../aria/index.html to generate 'after.html'"
+npx respec --src ../aria/index.html --out after.html
+echo "Run diff on 'before.html' and 'after.html'"
+diff before.html after.html
+echo "Clean up aria spec"
+git -C ../aria/ checkout ./common/script/aria.js