ProDisco

/** * Tests for the PrometheusClient */ import { describe, it, expect, beforeEach } from 'vitest'; import { PrometheusClient } from '../client.js'; describe('PrometheusClient', () => { let client: PrometheusClient; beforeEach(() => { client = new PrometheusClient({ endpoint: 'http://prometheus:9090', }); }); describe('constructor', () => { it('creates client with endpoint', () => { const c = new PrometheusClient({ endpoint: 'http://localhost:9090', }); expect(c.getEndpoint()).toBe('http://localhost:9090'); }); it('uses default timeout if not specified', () => { const c = new PrometheusClient({ endpoint: 'http://localhost:9090', }); expect(c).toBeDefined(); }); it('accepts custom timeout', () => { const c = new PrometheusClient({ endpoint: 'http://localhost:9090', timeout: 60000, }); expect(c).toBeDefined(); }); }); describe('getEndpoint', () => { it('returns the configured endpoint', () => { expect(client.getEndpoint()).toBe('http://prometheus:9090'); }); }); describe('isHealthy', () => { it('returns false when Prometheus is unreachable', async () => { // This will fail because there's no actual Prometheus server const healthy = await client.isHealthy(); expect(healthy).toBe(false); }); }); });