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DW-Agents/__tests__/integration/api-endpoints.test.ts

216 lines

/**
 * API Integration Tests
 * Tests for critical API endpoints across the DW-Agents system
 */

import axios, { AxiosError } from 'axios';

const BASE_URL = process.env.BASE_URL || 'http://localhost';
const MASTER_HUB_PORT = process.env.MASTER_HUB_PORT || '9800';
const API_BASE = `${BASE_URL}:${MASTER_HUB_PORT}`;

describe('API Endpoint Integration Tests', () => {

  describe('Core Endpoints', () => {
    it('should serve robots.txt', async () => {
      const response = await axios.get(`${API_BASE}/robots.txt`, {
        validateStatus: () => true
      });

      expect(response.status).toBe(200);
      expect(response.headers['content-type']).toMatch(/text\/plain/);
      expect(response.data).toContain('User-agent');
    });

    it('should serve main dashboard', async () => {
      const response = await axios.get(API_BASE, {
        validateStatus: () => true
      });

      expect([200, 301, 302]).toContain(response.status);
    });

    it('should handle 404 for non-existent routes', async () => {
      const response = await axios.get(`${API_BASE}/api/nonexistent-route-12345`, {
        validateStatus: () => true
      });

      expect(response.status).toBe(404);
    });

    it('should set appropriate security headers', async () => {
      const response = await axios.get(`${API_BASE}/api/health`);

      // Check for common security headers
      const headers = response.headers;

      // X-Powered-By should be hidden
      expect(headers['x-powered-by']).toBeUndefined();
    });
  });

  describe('API Response Format', () => {
    it('should return consistent JSON structure for API endpoints', async () => {
      const response = await axios.get(`${API_BASE}/api/health`);

      expect(response.headers['content-type']).toMatch(/application\/json/);
      expect(typeof response.data).toBe('object');
    });

    it('should handle CORS if configured', async () => {
      const response = await axios.options(`${API_BASE}/api/health`, {
        validateStatus: () => true,
        headers: {
          'Origin': 'http://example.com',
          'Access-Control-Request-Method': 'GET'
        }
      });

      // CORS headers may or may not be present depending on configuration
      // This test just verifies the OPTIONS request doesn't fail
      expect([200, 204, 404]).toContain(response.status);
    });
  });

  describe('Error Handling', () => {
    it('should return appropriate error for malformed requests', async () => {
      try {
        await axios.post(`${API_BASE}/api/health`,
          'invalid-json-{{{',
          {
            headers: { 'Content-Type': 'application/json' },
            validateStatus: () => true
          }
        );
      } catch (error) {
        // Some endpoints might not accept POST
        // This test verifies graceful handling
      }

      // Test passes if no unhandled exception
      expect(true).toBe(true);
    });

    it('should handle large request bodies appropriately', async () => {
      const largePayload = 'x'.repeat(10 * 1024 * 1024); // 10MB

      const response = await axios.post(`${API_BASE}/api/health`,
        { data: largePayload },
        {
          validateStatus: () => true,
          timeout: 5000
        }
      ).catch((error: AxiosError) => {
        // Expected to fail or timeout
        return error.response || { status: 0 };
      });

      // Should either reject or handle gracefully
      expect([0, 400, 413, 404, 405, 500, 503]).toContain(response.status);
    });
  });

  describe('API Rate Limiting', () => {
    it('should handle multiple rapid requests', async () => {
      const requests = Array(100).fill(null).map((_, i) =>
        axios.get(`${API_BASE}/api/health`, {
          validateStatus: () => true
        }).catch(() => ({ status: 0, data: null }))
      );

      const responses = await Promise.all(requests);

      // Count successful requests
      const successful = responses.filter(r => r.status === 200).length;

      // At least 80% should succeed
      expect(successful).toBeGreaterThan(80);

      // Check if any were rate limited (429)
      const rateLimited = responses.filter(r => r.status === 429).length;

      // Rate limiting is optional
      if (rateLimited > 0) {
        expect(rateLimited).toBeLessThan(50);
      }
    });
  });

  describe('Agent Communication', () => {
    it('should verify master hub is accessible', async () => {
      const response = await axios.get(`${API_BASE}/api/health`, {
        timeout: 5000,
        validateStatus: () => true
      });

      expect(response.status).toBe(200);
      expect(response.data).toBeDefined();
    });

    it('should handle connection timeouts gracefully', async () => {
      // Test with very short timeout
      try {
        await axios.get(`${API_BASE}/api/health`, {
          timeout: 1 // 1ms - should timeout
        });
      } catch (error) {
        expect((error as AxiosError).code).toMatch(/TIMEOUT|ECONNABORTED/);
      }
    });
  });

  describe('Data Validation', () => {
    it('should validate content types correctly', async () => {
      const response = await axios.get(`${API_BASE}/api/health`);

      const contentType = response.headers['content-type'];
      expect(contentType).toBeDefined();
      expect(contentType).toMatch(/application\/json|text\/plain|text\/html/);
    });

    it('should return appropriate content length headers', async () => {
      const response = await axios.get(`${API_BASE}/api/health`);

      const contentLength = response.headers['content-length'];
      if (contentLength) {
        const actualLength = JSON.stringify(response.data).length;
        expect(parseInt(contentLength)).toBeGreaterThan(0);
      }
    });
  });
});

describe('Agent Health Monitoring', () => {

  describe('Individual Agent Health', () => {
    it('should check if agents are responsive', async () => {
      // This would test individual agent endpoints
      // For now, we test the master hub which coordinates all agents

      const response = await axios.get(`${API_BASE}/api/health`);
      expect(response.status).toBe(200);
    });

    it('should verify agent uptime metrics', async () => {
      const response = await axios.get(`${API_BASE}/api/health`);

      // If uptime is provided, it should be reasonable
      if (response.data.uptime) {
        expect(response.data.uptime).toBeGreaterThan(0);
        expect(response.data.uptime).toBeLessThan(365 * 24 * 60 * 60); // Less than 1 year
      }
    });
  });

  describe('System Integration', () => {
    it('should verify all critical services are accessible', async () => {
      // Test master hub
      const response = await axios.get(`${API_BASE}/api/health`);
      expect(response.status).toBe(200);

      // Additional agents would be tested here if we had their ports
      // For now, we focus on the master hub
    });
  });
});