chore: sync infra docs and coverage

backend/src/tests/applications.test.js

@@ -0,0 +1,79 @@
+const request = require('supertest');
+const app = require('../server');
+const { registerUser, createEmployerProfile } = require('./utils');
+
+async function createJob(token) {
+  const response = await request(app)
+    .post('/api/jobs')
+    .set('Authorization', `Bearer ${token}`)
+    .send({
+      title: 'QA Engineer',
+      description: 'Ensure software quality',
+      requirements: ['Attention to detail'],
+      responsibilities: ['Write test plans'],
+      location: 'Remote',
+      employmentType: 'full-time',
+      remoteAllowed: true
+    })
+    .expect(201);
+
+  return response.body.job;
+}
+
+describe('Applications API', () => {
+  it('supports full application lifecycle', async () => {
+    const { token: employerToken } = await registerUser('employer');
+    await createEmployerProfile(employerToken);
+    const job = await createJob(employerToken);
+
+    const { token: candidateToken } = await registerUser('candidate');
+
+    await request(app)
+      .post('/api/candidates')
+      .set('Authorization', `Bearer ${candidateToken}`)
+      .send({
+        location: 'Remote',
+        skills: ['Automation'],
+        experienceLevel: 'mid'
+      })
+      .expect(201);
+
+    const applicationResponse = await request(app)
+      .post('/api/applications')
+      .set('Authorization', `Bearer ${candidateToken}`)
+      .send({
+        jobId: job.id,
+        coverLetter: 'Excited to apply'
+      })
+      .expect(201);
+
+    const applicationId = applicationResponse.body.application.id;
+
+    const listForCandidate = await request(app)
+      .get('/api/applications')
+      .set('Authorization', `Bearer ${candidateToken}`)
+      .expect(200);
+
+    expect(listForCandidate.body.applications).toHaveLength(1);
+
+    await request(app)
+      .put(`/api/applications/${applicationId}/status`)
+      .set('Authorization', `Bearer ${employerToken}`)
+      .send({ status: 'reviewed' })
+      .expect(200);
+
+    await request(app)
+      .put(`/api/applications/${applicationId}/notes`)
+      .set('Authorization', `Bearer ${employerToken}`)
+      .send({ notes: 'Strong automation background' })
+      .expect(200);
+
+    const detailResponse = await request(app)
+      .get(`/api/applications/${applicationId}`)
+      .set('Authorization', `Bearer ${employerToken}`)
+      .expect(200);
+
+    expect(detailResponse.body.status).toBe('reviewed');
+    expect(detailResponse.body.notes).toBe('Strong automation background');
+  });
+});