fix: Correct Vitest worker ID env var and improve URI parsing robustness

Co-authored-by: yuki-takei <1638767+yuki-takei@users.noreply.github.com>

apps/app/test/setup/mongoms.ts

@@ -9,24 +9,27 @@ beforeAll(async () => {
   // Use external MongoDB if MONGO_URI is provided (e.g., in CI with GitHub Actions services)
   if (process.env.MONGO_URI) {
     // Generate unique database name for each test worker to avoid conflicts in parallel execution
-    // VITEST_POOL_ID is provided by Vitest (e.g., "1", "2", "3"...)
-    const workerId = process.env.VITEST_POOL_ID || '1';
+    // VITEST_WORKER_ID is provided by Vitest (e.g., "1", "2", "3"...)
+    const workerId = process.env.VITEST_WORKER_ID || '1';
     const dbName = `growi_test_${workerId}`;
     
     // Parse base URI and append database name
-    // Handle both cases: with and without existing database name in URI
-    let mongoUri: string;
-    if (process.env.MONGO_URI.includes('?')) {
-      // URI has query parameters: mongodb://host:port/dbname?params
-      mongoUri = process.env.MONGO_URI.replace(/\/[^/?]*(\?|$)/, `/${dbName}$1`);
-    } else if (process.env.MONGO_URI.match(/\/[^/]+$/)) {
-      // URI has database name: mongodb://host:port/dbname
-      mongoUri = process.env.MONGO_URI.replace(/\/[^/]+$/, `/${dbName}`);
+    // Extract base URI (protocol + host + port) and query parameters
+    const [uriWithoutQuery, queryString] = process.env.MONGO_URI.split('?');
+    
+    // Find the last slash after the protocol (mongodb://)
+    // and replace everything after it with the new database name
+    let baseUri: string;
+    const protocolMatch = uriWithoutQuery.match(/^mongodb:\/\/[^/]+/);
+    if (protocolMatch) {
+      baseUri = protocolMatch[0];
     } else {
-      // URI has no database name: mongodb://host:port or mongodb://host:port/
-      mongoUri = process.env.MONGO_URI.replace(/\/?$/, `/${dbName}`);
+      // Fallback: if no match, use the whole URI
+      baseUri = uriWithoutQuery;
     }
     
+    const mongoUri = `${baseUri}/${dbName}${queryString ? '?' + queryString : ''}`;
+    
     // biome-ignore lint/suspicious/noConsole: Allow logging
     console.log(`Using external MongoDB at ${mongoUri} (worker: ${workerId})`);
     await mongoose.connect(mongoUri, mongoOptions);