Add Selenium integration test framework

test/integration/server.js

@@ -0,0 +1,60 @@
+/**
+ * Minimal static file server for e2e tests.
+ * Serves the test page and ribbit dist files.
+ */
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+const MIME = {
+    '.html': 'text/html',
+    '.js': 'application/javascript',
+    '.css': 'text/css',
+    '.map': 'application/json',
+};
+
+function createServer(port = 9999) {
+    const distDir = path.join(__dirname, '..', '..', 'dist', 'ribbit');
+    const testDir = __dirname;
+
+    const server = http.createServer((req, res) => {
+        let filePath;
+        if (req.url === '/' || req.url === '/index.html') {
+            filePath = path.join(testDir, 'index.html');
+        } else if (req.url.startsWith('/ribbit/')) {
+            filePath = path.join(distDir, req.url.replace('/ribbit/', ''));
+        } else {
+            res.writeHead(404);
+            res.end('Not found');
+            return;
+        }
+
+        const ext = path.extname(filePath);
+        const mime = MIME[ext] || 'application/octet-stream';
+
+        try {
+            const content = fs.readFileSync(filePath);
+            res.writeHead(200, { 'Content-Type': mime });
+            res.end(content);
+        } catch {
+            res.writeHead(404);
+            res.end('Not found');
+        }
+    });
+
+    return {
+        start() {
+            return new Promise((resolve) => {
+                server.listen(port, () => resolve());
+            });
+        },
+        stop() {
+            return new Promise((resolve) => {
+                server.close(() => resolve());
+            });
+        },
+        url: `http://localhost:${port}`,
+    };
+}
+
+module.exports = { createServer };