Add tests for DC-100 discover + DC-107 disaster recovery endpoints

8 new tests covering:
- Service discovery: 503 without Docker, pattern matching, empty list, errors
- Disaster recovery: status, backup creation, restore validation, file restoration
- 1656 tests pass, 73 suites

dashcaddy-api/__tests__/routes/discover-disaster.routes.test.js

@@ -0,0 +1,138 @@
+/**
+ * DC-100: Service discovery + DC-107: Disaster recovery endpoint tests
+ */
+const express = require('express');
+const request = require('supertest');
+const fs = require('fs');
+const path = require('path');
+const os = require('os');
+
+function createDiscoverApp(docker, servicesStateManager) {
+  const app = express();
+  app.use(express.json());
+  const routes = require('../../routes/discover');
+  const wrap = (fn) => (req, res, next) => Promise.resolve(fn(req, res, next)).catch(next);
+  app.use('/api/v1', routes({ docker, servicesStateManager, asyncHandler: wrap }));
+  return app;
+}
+
+function createDisasterApp(platformPaths, log) {
+  const app = express();
+  app.use(express.json());
+  const routes = require('../../routes/disaster-recovery');
+  const wrap = (fn) => (req, res, next) => Promise.resolve(fn(req, res, next)).catch(next);
+  app.use('/api/v1', routes({ platformPaths, log: log || { info: jest.fn(), error: jest.fn() }, asyncHandler: wrap }));
+  return app;
+}
+
+describe('DC-100: Service Discovery', () => {
+  it('returns 503 when Docker is not available', async () => {
+    const app = createDiscoverApp(null, null);
+    const res = await request(app).get('/api/v1/discover');
+    expect(res.status).toBe(503);
+    expect(res.body.success).toBe(false);
+  });
+
+  it('discovers running containers with pattern matching', async () => {
+    const mockDocker = {
+      client: {
+        listContainers: jest.fn().mockResolvedValue([
+          {
+            Id: 'abc123def456',
+            Names: ['/plex-server'],
+            Image: 'plexinc/pms-docker:latest',
+            State: 'running',
+            Ports: [{ IP: '0.0.0.0', PrivatePort: 32400, PublicPort: 32400, Type: 'tcp' }],
+            Labels: {},
+          },
+        ]),
+      },
+    };
+
+    const app = createDiscoverApp(mockDocker, { read: jest.fn().mockResolvedValue([]) });
+    const res = await request(app).get('/api/v1/discover');
+
+    expect(res.status).toBe(200);
+    expect(res.body.total).toBe(1);
+    expect(res.body.discovered[0].suggested.type).toBe('plex');
+  });
+
+  it('handles empty container list', async () => {
+    const app = createDiscoverApp({ client: { listContainers: jest.fn().mockResolvedValue([]) } }, null);
+    const res = await request(app).get('/api/v1/discover');
+    expect(res.status).toBe(200);
+    expect(res.body.total).toBe(0);
+  });
+
+  it('returns 500 on Docker error', async () => {
+    const app = createDiscoverApp({ client: { listContainers: jest.fn().mockRejectedValue(new Error('fail')) } }, null);
+    const res = await request(app).get('/api/v1/discover');
+    expect(res.status).toBe(500);
+  });
+});
+
+describe('DC-107: Disaster Recovery', () => {
+  let tmpDir;
+
+  beforeEach(() => {
+    tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'dc-dr-'));
+  });
+
+  afterEach(() => {
+    fs.rmSync(tmpDir, { recursive: true, force: true });
+  });
+
+  it('GET /disaster/status returns empty status initially', async () => {
+    const app = createDisasterApp({ dataDir: tmpDir });
+    const res = await request(app).get('/api/v1/disaster/status');
+    expect(res.status).toBe(200);
+    expect(res.body.lastBackup).toBeTruthy();
+    expect(res.body.lastBackup.status).toBeNull();
+  });
+
+  it('POST /disaster/backup creates snapshot', async () => {
+    // Create a services.json so backup has data
+    fs.writeFileSync(path.join(tmpDir, 'services.json'), JSON.stringify([{ id: 'test' }]));
+    fs.writeFileSync(path.join(tmpDir, 'config.json'), JSON.stringify({ tld: '.sami' }));
+
+    const app = createDisasterApp({ dataDir: tmpDir });
+    const res = await request(app).post('/api/v1/disaster/backup');
+
+    expect(res.status).toBe(200);
+    expect(res.body.version).toBe('1.0');
+    expect(res.body.files.services).toBeTruthy();
+    expect(res.body.files.config).toBeTruthy();
+    expect(res.body.checksum).toBeTruthy();
+  });
+
+  it('POST /disaster/restore rejects invalid snapshot', async () => {
+    const app = createDisasterApp({ dataDir: tmpDir });
+    const res = await request(app)
+      .post('/api/v1/disaster/restore')
+      .send({ foo: 'bar' });
+
+    expect(res.status).toBe(400);
+  });
+
+  it('POST /disaster/restore restores files', async () => {
+    const app = createDisasterApp({ dataDir: tmpDir });
+    const res = await request(app)
+      .post('/api/v1/disaster/restore')
+      .send({
+        version: '1.0',
+        files: {
+          services: [{ id: 'restored-svc' }],
+          config: { tld: '.test' },
+        },
+      });
+
+    expect(res.status).toBe(200);
+    expect(res.body.status).toBe('success');
+    expect(res.body.restored).toContain('services.json');
+    expect(res.body.restored).toContain('config.json');
+
+    // Verify files were written
+    const svc = JSON.parse(fs.readFileSync(path.join(tmpDir, 'services.json'), 'utf8'));
+    expect(svc[0].id).toBe('restored-svc');
+  });
+});