config-manager.test.ts•29.6 kB
import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
import { TelemetryConfigManager } from '../../../src/telemetry/config-manager';
import { existsSync, readFileSync, writeFileSync, mkdirSync, rmSync } from 'fs';
import { join } from 'path';
import { homedir } from 'os';
// Mock fs module
vi.mock('fs', async () => {
const actual = await vi.importActual<typeof import('fs')>('fs');
return {
...actual,
existsSync: vi.fn(),
readFileSync: vi.fn(),
writeFileSync: vi.fn(),
mkdirSync: vi.fn()
};
});
describe('TelemetryConfigManager', () => {
let manager: TelemetryConfigManager;
beforeEach(() => {
vi.clearAllMocks();
// Clear singleton instance
(TelemetryConfigManager as any).instance = null;
// Mock console.log to suppress first-run notice in tests
vi.spyOn(console, 'log').mockImplementation(() => {});
});
afterEach(() => {
vi.restoreAllMocks();
});
describe('getInstance', () => {
it('should return singleton instance', () => {
const instance1 = TelemetryConfigManager.getInstance();
const instance2 = TelemetryConfigManager.getInstance();
expect(instance1).toBe(instance2);
});
});
describe('loadConfig', () => {
it('should create default config on first run', () => {
vi.mocked(existsSync).mockReturnValue(false);
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
expect(config.enabled).toBe(true);
expect(config.userId).toMatch(/^[a-f0-9]{16}$/);
expect(config.firstRun).toBeDefined();
expect(vi.mocked(mkdirSync)).toHaveBeenCalledWith(
join(homedir(), '.n8n-mcp'),
{ recursive: true }
);
expect(vi.mocked(writeFileSync)).toHaveBeenCalled();
});
it('should load existing config from disk', () => {
const mockConfig = {
enabled: false,
userId: 'test-user-id',
firstRun: '2024-01-01T00:00:00Z'
};
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify(mockConfig));
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
expect(config).toEqual(mockConfig);
});
it('should handle corrupted config file gracefully', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue('invalid json');
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
expect(config.enabled).toBe(false);
expect(config.userId).toMatch(/^[a-f0-9]{16}$/);
});
it('should add userId to config if missing', () => {
const mockConfig = {
enabled: true,
firstRun: '2024-01-01T00:00:00Z'
};
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify(mockConfig));
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
expect(config.userId).toMatch(/^[a-f0-9]{16}$/);
expect(vi.mocked(writeFileSync)).toHaveBeenCalled();
});
});
describe('isEnabled', () => {
it('should return true when telemetry is enabled', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true,
userId: 'test-id'
}));
manager = TelemetryConfigManager.getInstance();
expect(manager.isEnabled()).toBe(true);
});
it('should return false when telemetry is disabled', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: false,
userId: 'test-id'
}));
manager = TelemetryConfigManager.getInstance();
expect(manager.isEnabled()).toBe(false);
});
});
describe('getUserId', () => {
it('should return consistent user ID', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true,
userId: 'test-user-id-123'
}));
manager = TelemetryConfigManager.getInstance();
expect(manager.getUserId()).toBe('test-user-id-123');
});
});
describe('isFirstRun', () => {
it('should return true if config file does not exist', () => {
vi.mocked(existsSync).mockReturnValue(false);
manager = TelemetryConfigManager.getInstance();
expect(manager.isFirstRun()).toBe(true);
});
it('should return false if config file exists', () => {
vi.mocked(existsSync).mockReturnValue(true);
manager = TelemetryConfigManager.getInstance();
expect(manager.isFirstRun()).toBe(false);
});
});
describe('enable/disable', () => {
beforeEach(() => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: false,
userId: 'test-id'
}));
});
it('should enable telemetry', () => {
manager = TelemetryConfigManager.getInstance();
manager.enable();
const calls = vi.mocked(writeFileSync).mock.calls;
expect(calls.length).toBeGreaterThan(0);
const lastCall = calls[calls.length - 1];
expect(lastCall[1]).toContain('"enabled": true');
});
it('should disable telemetry', () => {
manager = TelemetryConfigManager.getInstance();
manager.disable();
const calls = vi.mocked(writeFileSync).mock.calls;
expect(calls.length).toBeGreaterThan(0);
const lastCall = calls[calls.length - 1];
expect(lastCall[1]).toContain('"enabled": false');
});
});
describe('getStatus', () => {
it('should return formatted status string', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true,
userId: 'test-id',
firstRun: '2024-01-01T00:00:00Z'
}));
manager = TelemetryConfigManager.getInstance();
const status = manager.getStatus();
expect(status).toContain('ENABLED');
expect(status).toContain('test-id');
expect(status).toContain('2024-01-01T00:00:00Z');
expect(status).toContain('npx n8n-mcp telemetry');
});
});
describe('edge cases and error handling', () => {
it('should handle file system errors during config creation', () => {
vi.mocked(existsSync).mockReturnValue(false);
vi.mocked(mkdirSync).mockImplementation(() => {
throw new Error('Permission denied');
});
// Should not crash on file system errors
expect(() => TelemetryConfigManager.getInstance()).not.toThrow();
});
it('should handle write errors during config save', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: false,
userId: 'test-id'
}));
vi.mocked(writeFileSync).mockImplementation(() => {
throw new Error('Disk full');
});
manager = TelemetryConfigManager.getInstance();
// Should not crash on write errors
expect(() => manager.enable()).not.toThrow();
expect(() => manager.disable()).not.toThrow();
});
it('should handle missing home directory', () => {
// Mock homedir to return empty string
const originalHomedir = require('os').homedir;
vi.doMock('os', () => ({
homedir: () => ''
}));
vi.mocked(existsSync).mockReturnValue(false);
expect(() => TelemetryConfigManager.getInstance()).not.toThrow();
});
it('should generate valid user ID when crypto.randomBytes fails', () => {
vi.mocked(existsSync).mockReturnValue(false);
// Mock crypto to fail
vi.doMock('crypto', () => ({
randomBytes: () => {
throw new Error('Crypto not available');
}
}));
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
expect(config.userId).toBeDefined();
expect(config.userId).toMatch(/^[a-f0-9]{16}$/);
});
it('should handle concurrent access to config file', () => {
let readCount = 0;
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockImplementation(() => {
readCount++;
if (readCount === 1) {
return JSON.stringify({
enabled: false,
userId: 'test-id-1'
});
}
return JSON.stringify({
enabled: true,
userId: 'test-id-2'
});
});
const manager1 = TelemetryConfigManager.getInstance();
const manager2 = TelemetryConfigManager.getInstance();
// Should be same instance due to singleton pattern
expect(manager1).toBe(manager2);
});
it('should handle environment variable overrides', () => {
const originalEnv = process.env.N8N_MCP_TELEMETRY_DISABLED;
// Test with environment variable set to disable telemetry
process.env.N8N_MCP_TELEMETRY_DISABLED = 'true';
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true,
userId: 'test-id'
}));
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
expect(manager.isEnabled()).toBe(false);
// Test with environment variable set to enable telemetry
process.env.N8N_MCP_TELEMETRY_DISABLED = 'false';
(TelemetryConfigManager as any).instance = null;
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true,
userId: 'test-id'
}));
manager = TelemetryConfigManager.getInstance();
expect(manager.isEnabled()).toBe(true);
// Restore original environment
process.env.N8N_MCP_TELEMETRY_DISABLED = originalEnv;
});
it('should handle invalid JSON in config file gracefully', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue('{ invalid json syntax');
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
expect(config.enabled).toBe(false); // Default to disabled on corrupt config
expect(config.userId).toMatch(/^[a-f0-9]{16}$/); // Should generate new user ID
});
it('should handle config file with partial structure', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true
// Missing userId and firstRun
}));
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
expect(config.enabled).toBe(true);
expect(config.userId).toMatch(/^[a-f0-9]{16}$/);
// firstRun might not be defined if config is partial and loaded from disk
// The implementation only adds firstRun on first creation
});
it('should handle config file with invalid data types', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: 'not-a-boolean',
userId: 12345, // Not a string
firstRun: null
}));
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
// The config manager loads the data as-is, so we get the original types
// The validation happens during usage, not loading
expect(config.enabled).toBe('not-a-boolean');
expect(config.userId).toBe(12345);
});
it('should handle very large config files', () => {
const largeConfig = {
enabled: true,
userId: 'test-id',
firstRun: '2024-01-01T00:00:00Z',
extraData: 'x'.repeat(1000000) // 1MB of data
};
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify(largeConfig));
expect(() => TelemetryConfigManager.getInstance()).not.toThrow();
});
it('should handle config directory creation race conditions', () => {
vi.mocked(existsSync).mockReturnValue(false);
let mkdirCallCount = 0;
vi.mocked(mkdirSync).mockImplementation(() => {
mkdirCallCount++;
if (mkdirCallCount === 1) {
throw new Error('EEXIST: file already exists');
}
return undefined;
});
expect(() => TelemetryConfigManager.getInstance()).not.toThrow();
});
it('should handle file system permission changes', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: false,
userId: 'test-id'
}));
manager = TelemetryConfigManager.getInstance();
// Simulate permission denied on subsequent write
vi.mocked(writeFileSync).mockImplementationOnce(() => {
throw new Error('EACCES: permission denied');
});
expect(() => manager.enable()).not.toThrow();
});
it('should handle system clock changes affecting timestamps', () => {
const futureDate = new Date(Date.now() + 365 * 24 * 60 * 60 * 1000); // 1 year in future
const pastDate = new Date(Date.now() - 365 * 24 * 60 * 60 * 1000); // 1 year in past
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true,
userId: 'test-id',
firstRun: futureDate.toISOString()
}));
manager = TelemetryConfigManager.getInstance();
const config = manager.loadConfig();
expect(config.firstRun).toBeDefined();
expect(new Date(config.firstRun as string).getTime()).toBeGreaterThan(0);
});
it('should handle config updates during runtime', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: false,
userId: 'test-id'
}));
manager = TelemetryConfigManager.getInstance();
expect(manager.isEnabled()).toBe(false);
// Simulate external config change by clearing cache first
(manager as any).config = null;
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true,
userId: 'test-id'
}));
// Now calling loadConfig should pick up changes
const newConfig = manager.loadConfig();
expect(newConfig.enabled).toBe(true);
expect(manager.isEnabled()).toBe(true);
});
it('should handle multiple rapid enable/disable calls', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: false,
userId: 'test-id'
}));
manager = TelemetryConfigManager.getInstance();
// Rapidly toggle state
for (let i = 0; i < 100; i++) {
if (i % 2 === 0) {
manager.enable();
} else {
manager.disable();
}
}
// Should not crash and maintain consistent state
expect(typeof manager.isEnabled()).toBe('boolean');
});
it('should handle user ID collision (extremely unlikely)', () => {
vi.mocked(existsSync).mockReturnValue(false);
// Mock crypto to always return same bytes
const mockBytes = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
vi.doMock('crypto', () => ({
randomBytes: () => mockBytes
}));
(TelemetryConfigManager as any).instance = null;
const manager1 = TelemetryConfigManager.getInstance();
const userId1 = manager1.getUserId();
(TelemetryConfigManager as any).instance = null;
const manager2 = TelemetryConfigManager.getInstance();
const userId2 = manager2.getUserId();
// Should generate same ID from same random bytes
expect(userId1).toBe(userId2);
expect(userId1).toMatch(/^[a-f0-9]{16}$/);
});
it('should handle status generation with missing fields', () => {
vi.mocked(existsSync).mockReturnValue(true);
vi.mocked(readFileSync).mockReturnValue(JSON.stringify({
enabled: true
// Missing userId and firstRun
}));
manager = TelemetryConfigManager.getInstance();
const status = manager.getStatus();
expect(status).toContain('ENABLED');
expect(status).toBeDefined();
expect(typeof status).toBe('string');
});
});
describe('Docker/Cloud user ID generation', () => {
let originalIsDocker: string | undefined;
let originalRailway: string | undefined;
beforeEach(() => {
originalIsDocker = process.env.IS_DOCKER;
originalRailway = process.env.RAILWAY_ENVIRONMENT;
});
afterEach(() => {
if (originalIsDocker === undefined) {
delete process.env.IS_DOCKER;
} else {
process.env.IS_DOCKER = originalIsDocker;
}
if (originalRailway === undefined) {
delete process.env.RAILWAY_ENVIRONMENT;
} else {
process.env.RAILWAY_ENVIRONMENT = originalRailway;
}
});
describe('boot_id reading', () => {
it('should read valid boot_id from /proc/sys/kernel/random/boot_id', () => {
const mockBootId = 'f3c371fe-8a77-4592-8332-7a4d0d88d4ac';
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return true;
return false;
});
vi.mocked(readFileSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return mockBootId;
throw new Error('File not found');
});
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
expect(userId).toMatch(/^[a-f0-9]{16}$/);
expect(vi.mocked(readFileSync)).toHaveBeenCalledWith(
'/proc/sys/kernel/random/boot_id',
'utf-8'
);
});
it('should validate boot_id UUID format', () => {
const invalidBootId = 'not-a-valid-uuid';
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return true;
if (path === '/proc/cpuinfo') return true;
if (path === '/proc/meminfo') return true;
return false;
});
vi.mocked(readFileSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return invalidBootId;
if (path === '/proc/cpuinfo') return 'processor: 0\nprocessor: 1\n';
if (path === '/proc/meminfo') return 'MemTotal: 8040052 kB\n';
throw new Error('File not found');
});
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
// Should fallback to combined fingerprint, not use invalid boot_id
expect(userId).toMatch(/^[a-f0-9]{16}$/);
});
it('should handle boot_id file not existing', () => {
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return false;
if (path === '/proc/cpuinfo') return true;
if (path === '/proc/meminfo') return true;
return false;
});
vi.mocked(readFileSync).mockImplementation((path: any) => {
if (path === '/proc/cpuinfo') return 'processor: 0\nprocessor: 1\n';
if (path === '/proc/meminfo') return 'MemTotal: 8040052 kB\n';
throw new Error('File not found');
});
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
// Should fallback to combined fingerprint
expect(userId).toMatch(/^[a-f0-9]{16}$/);
});
it('should handle boot_id read errors gracefully', () => {
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return true;
return false;
});
vi.mocked(readFileSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') {
throw new Error('Permission denied');
}
throw new Error('File not found');
});
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
// Should fallback gracefully
expect(userId).toMatch(/^[a-f0-9]{16}$/);
});
it('should generate consistent user ID from same boot_id', () => {
const mockBootId = 'f3c371fe-8a77-4592-8332-7a4d0d88d4ac';
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return true;
return false;
});
vi.mocked(readFileSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return mockBootId;
throw new Error('File not found');
});
(TelemetryConfigManager as any).instance = null;
const manager1 = TelemetryConfigManager.getInstance();
const userId1 = manager1.getUserId();
(TelemetryConfigManager as any).instance = null;
const manager2 = TelemetryConfigManager.getInstance();
const userId2 = manager2.getUserId();
// Same boot_id should produce same user_id
expect(userId1).toBe(userId2);
});
});
describe('combined fingerprint fallback', () => {
it('should generate fingerprint from CPU, memory, and kernel', () => {
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return false;
if (path === '/proc/cpuinfo') return true;
if (path === '/proc/meminfo') return true;
if (path === '/proc/version') return true;
return false;
});
vi.mocked(readFileSync).mockImplementation((path: any) => {
if (path === '/proc/cpuinfo') return 'processor: 0\nprocessor: 1\nprocessor: 2\nprocessor: 3\n';
if (path === '/proc/meminfo') return 'MemTotal: 8040052 kB\n';
if (path === '/proc/version') return 'Linux version 5.15.49-linuxkit';
throw new Error('File not found');
});
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
expect(userId).toMatch(/^[a-f0-9]{16}$/);
});
it('should require at least 3 signals for combined fingerprint', () => {
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return false;
// Only platform and arch available (2 signals)
return false;
});
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
// Should fallback to generic Docker ID
expect(userId).toMatch(/^[a-f0-9]{16}$/);
});
it('should handle partial /proc data', () => {
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return false;
if (path === '/proc/cpuinfo') return true;
// meminfo missing
return false;
});
vi.mocked(readFileSync).mockImplementation((path: any) => {
if (path === '/proc/cpuinfo') return 'processor: 0\nprocessor: 1\n';
throw new Error('File not found');
});
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
// Should include platform and arch, so 4 signals total
expect(userId).toMatch(/^[a-f0-9]{16}$/);
});
});
describe('environment detection', () => {
it('should use Docker method when IS_DOCKER=true', () => {
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockReturnValue(false);
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
expect(userId).toMatch(/^[a-f0-9]{16}$/);
// Should attempt to read boot_id
expect(vi.mocked(existsSync)).toHaveBeenCalledWith('/proc/sys/kernel/random/boot_id');
});
it('should use Docker method for Railway environment', () => {
process.env.RAILWAY_ENVIRONMENT = 'production';
delete process.env.IS_DOCKER;
vi.mocked(existsSync).mockReturnValue(false);
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
expect(userId).toMatch(/^[a-f0-9]{16}$/);
// Should attempt to read boot_id
expect(vi.mocked(existsSync)).toHaveBeenCalledWith('/proc/sys/kernel/random/boot_id');
});
it('should use file-based method for local installation', () => {
delete process.env.IS_DOCKER;
delete process.env.RAILWAY_ENVIRONMENT;
vi.mocked(existsSync).mockReturnValue(false);
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
expect(userId).toMatch(/^[a-f0-9]{16}$/);
// Should NOT attempt to read boot_id
const calls = vi.mocked(existsSync).mock.calls;
const bootIdCalls = calls.filter(call => call[0] === '/proc/sys/kernel/random/boot_id');
expect(bootIdCalls.length).toBe(0);
});
it('should detect cloud platforms', () => {
const cloudEnvVars = [
'RAILWAY_ENVIRONMENT',
'RENDER',
'FLY_APP_NAME',
'HEROKU_APP_NAME',
'AWS_EXECUTION_ENV',
'KUBERNETES_SERVICE_HOST',
'GOOGLE_CLOUD_PROJECT',
'AZURE_FUNCTIONS_ENVIRONMENT'
];
cloudEnvVars.forEach(envVar => {
// Clear all env vars
cloudEnvVars.forEach(v => delete process.env[v]);
delete process.env.IS_DOCKER;
// Set one cloud env var
process.env[envVar] = 'true';
vi.mocked(existsSync).mockReturnValue(false);
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
expect(userId).toMatch(/^[a-f0-9]{16}$/);
// Should attempt to read boot_id
const calls = vi.mocked(existsSync).mock.calls;
const bootIdCalls = calls.filter(call => call[0] === '/proc/sys/kernel/random/boot_id');
expect(bootIdCalls.length).toBeGreaterThan(0);
// Clean up
delete process.env[envVar];
});
});
});
describe('fallback chain execution', () => {
it('should fallback from boot_id → combined → generic', () => {
process.env.IS_DOCKER = 'true';
// All methods fail
vi.mocked(existsSync).mockReturnValue(false);
vi.mocked(readFileSync).mockImplementation(() => {
throw new Error('File not found');
});
(TelemetryConfigManager as any).instance = null;
manager = TelemetryConfigManager.getInstance();
const userId = manager.getUserId();
// Should still generate a generic Docker ID
expect(userId).toMatch(/^[a-f0-9]{16}$/);
});
it('should use boot_id if available (highest priority)', () => {
const mockBootId = 'aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee';
process.env.IS_DOCKER = 'true';
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return true;
return true; // All other files available too
});
vi.mocked(readFileSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return mockBootId;
if (path === '/proc/cpuinfo') return 'processor: 0\n';
if (path === '/proc/meminfo') return 'MemTotal: 1000000 kB\n';
return 'mock data';
});
(TelemetryConfigManager as any).instance = null;
const manager1 = TelemetryConfigManager.getInstance();
const userId1 = manager1.getUserId();
// Now break boot_id but keep combined signals
vi.mocked(existsSync).mockImplementation((path: any) => {
if (path === '/proc/sys/kernel/random/boot_id') return false;
return true;
});
(TelemetryConfigManager as any).instance = null;
const manager2 = TelemetryConfigManager.getInstance();
const userId2 = manager2.getUserId();
// Different methods should produce different IDs
expect(userId1).not.toBe(userId2);
expect(userId1).toMatch(/^[a-f0-9]{16}$/);
expect(userId2).toMatch(/^[a-f0-9]{16}$/);
});
});
});
});