chore: sync infra docs and coverage

backend/src/tests/setup.js

@@ -0,0 +1,17 @@
+const pool = require('../database/connection');
+const { cleanupUploads } = require('./utils');
+
+afterEach(async () => {
+  await pool.query(`
+    TRUNCATE TABLE
+      applications,
+      resumes,
+      interviews,
+      jobs,
+      candidates,
+      employers,
+      users
+    RESTART IDENTITY CASCADE
+  `);
+  await cleanupUploads();
+});