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import { RequestContextService } from '../../src/services/requestContextService.js';
import { Request } from 'express';
describe('RequestContextService', () => {
let service: RequestContextService;
beforeEach(() => {
service = RequestContextService.getInstance();
service.clearRequestContext();
});
afterEach(() => {
service.clearRequestContext();
});
it('should be a singleton', () => {
const service1 = RequestContextService.getInstance();
const service2 = RequestContextService.getInstance();
expect(service1).toBe(service2);
});
it('should set and get request context from Express request', () => {
const mockRequest = {
headers: {
authorization: 'Bearer test-token',
'x-api-key': 'test-api-key',
'user-agent': 'test-agent',
},
ip: '127.0.0.1',
connection: { remoteAddress: '127.0.0.1' },
} as unknown as Request;
service.setRequestContext(mockRequest);
const context = service.getRequestContext();
expect(context).toBeTruthy();
expect(context?.headers).toEqual(mockRequest.headers);
expect(context?.userAgent).toBe('test-agent');
expect(context?.remoteAddress).toBe('127.0.0.1');
});
it('should get specific headers case-insensitively', () => {
const mockRequest = {
headers: {
authorization: 'Bearer test-token',
'X-API-Key': 'test-api-key',
'content-type': 'application/json',
},
ip: '127.0.0.1',
connection: { remoteAddress: '127.0.0.1' },
} as unknown as Request;
service.setRequestContext(mockRequest);
// Test exact match
expect(service.getHeader('authorization')).toBe('Bearer test-token');
expect(service.getHeader('X-API-Key')).toBe('test-api-key');
// Test case-insensitive match
expect(service.getHeader('Authorization')).toBe('Bearer test-token');
expect(service.getHeader('x-api-key')).toBe('test-api-key');
expect(service.getHeader('CONTENT-TYPE')).toBe('application/json');
// Test non-existent header
expect(service.getHeader('non-existent')).toBeUndefined();
});
it('should handle array header values', () => {
const mockRequest = {
headers: {
accept: ['application/json', 'text/html'],
authorization: 'Bearer test-token',
},
ip: '127.0.0.1',
connection: { remoteAddress: '127.0.0.1' },
} as unknown as Request;
service.setRequestContext(mockRequest);
const acceptHeader = service.getHeader('accept');
expect(acceptHeader).toEqual(['application/json', 'text/html']);
const authHeader = service.getHeader('authorization');
expect(authHeader).toBe('Bearer test-token');
});
it('should extract session ID from mcp-session-id header', () => {
const mockRequest = {
headers: {
'mcp-session-id': 'test-session-123',
authorization: 'Bearer test-token',
},
ip: '127.0.0.1',
connection: { remoteAddress: '127.0.0.1' },
} as unknown as Request;
service.setRequestContext(mockRequest);
expect(service.getSessionId()).toBe('test-session-123');
});
it('should handle custom request context', () => {
const customContext = {
headers: {
'custom-header': 'custom-value',
authorization: 'Bearer custom-token',
},
sessionId: 'custom-session',
userAgent: 'custom-agent',
remoteAddress: '192.168.1.1',
};
service.setCustomRequestContext(customContext);
const context = service.getRequestContext();
expect(context).toEqual(customContext);
expect(service.getHeader('custom-header')).toBe('custom-value');
expect(service.getSessionId()).toBe('custom-session');
});
it('should return null when no context is set', () => {
expect(service.getRequestContext()).toBeNull();
expect(service.getHeaders()).toBeNull();
expect(service.getHeader('any-header')).toBeUndefined();
expect(service.getSessionId()).toBeUndefined();
});
it('should clear request context', () => {
const mockRequest = {
headers: { authorization: 'Bearer test-token' },
ip: '127.0.0.1',
connection: { remoteAddress: '127.0.0.1' },
} as unknown as Request;
service.setRequestContext(mockRequest);
expect(service.getRequestContext()).toBeTruthy();
service.clearRequestContext();
expect(service.getRequestContext()).toBeNull();
});
});
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