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import request from 'supertest'
// Setup
import chai = require('chai')
const expect = chai.expect
import { Logger, LegacyMetrics, createMetricsServer } from '../src'
describe('Metrics', () => {
it('shoud serve metrics', async () => {
const metrics = new LegacyMetrics({
prefix: 'test_metrics',
})
const registry = metrics.registry
const logger = new Logger({ name: 'test_logger' })
const server = await createMetricsServer({
logger,
registry,
port: 42069,
})
try {
// Create two metrics for testing
const counter = new metrics.client.Counter({
name: 'counter',
help: 'counter help',
registers: [registry],
})
const gauge = new metrics.client.Gauge({
name: 'gauge',
help: 'gauge help',
registers: [registry],
})
counter.inc()
counter.inc()
gauge.set(100)
// Verify that the registered metrics are served at `/`
const response = await request(server).get('/metrics').send()
expect(response.status).eq(200)
expect(response.text).match(/counter 2/)
expect(response.text).match(/gauge 100/)
} finally {
server.close()
registry.clear()
}
})
})