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child-logger-factory.test.js
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'use strict'
const { test } = require('node:test')
const Fastify = require('..')
test('Should accept a custom childLoggerFactory function', (t, done) => {
t.plan(4)
const fastify = Fastify()
fastify.setChildLoggerFactory(function (logger, bindings, opts) {
t.assert.ok(bindings.reqId)
t.assert.ok(opts)
this.log.debug(bindings, 'created child logger')
return logger.child(bindings, opts)
})
fastify.get('/', (req, reply) => {
req.log.info('log message')
reply.send()
})
t.after(() => fastify.close())
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
fastify.inject({
method: 'GET',
url: 'http://localhost:' + fastify.server.address().port
}, (err, res) => {
t.assert.ifError(err)
done()
})
})
})
test('Should accept a custom childLoggerFactory function as option', (t, done) => {
t.plan(2)
const fastify = Fastify({
childLoggerFactory: function (logger, bindings, opts) {
t.ok(bindings.reqId)
t.ok(opts)
this.log.debug(bindings, 'created child logger')
return logger.child(bindings, opts)
}
})
fastify.get('/', (req, reply) => {
req.log.info('log message')
reply.send()
})
t.after(() => fastify.close())
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
fastify.inject({
method: 'GET',
url: 'http://localhost:' + fastify.server.address().port
}, (err, res) => {
t.assert.ifError(err)
done()
})
})
})
test('req.log should be the instance returned by the factory', (t, done) => {
t.plan(3)
const fastify = Fastify()
fastify.setChildLoggerFactory(function (logger, bindings, opts) {
this.log.debug('using root logger')
return this.log
})
fastify.get('/', (req, reply) => {
t.assert.strictEqual(req.log, fastify.log)
req.log.info('log message')
reply.send()
})
t.after(() => fastify.close())
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
fastify.inject({
method: 'GET',
url: 'http://localhost:' + fastify.server.address().port
}, (err, res) => {
t.assert.ifError(err)
done()
})
})
})
test('should throw error if invalid logger is returned', (t, done) => {
t.plan(2)
const fastify = Fastify()
fastify.setChildLoggerFactory(function () {
this.log.debug('returning an invalid logger, expect error')
return undefined
})
fastify.get('/', (req, reply) => {
reply.send()
})
t.after(() => fastify.close())
fastify.listen({ port: 0 }, err => {
t.assert.ifError(err)
t.assert.throws(() => {
try {
fastify.inject({
method: 'GET',
url: 'http://localhost:' + fastify.server.address().port
}, (err) => {
t.assert.fail('request should have failed but did not')
t.assert.ifError(err)
done()
})
} finally {
done()
}
}, { code: 'FST_ERR_LOG_INVALID_LOGGER' })
})
})