node-postgres/packages/pg-pool/test/releasing-clients.js
Brian C 727f1a0ee3
Do not return broken clients to the pool (#2083)
* Prevent requeuing a broken client

If a client is not queryable, the pool should prevent requeuing instead
of strictly enforcing errors to be propagated back to it.

* Write tests for change

* Use node 13.6 in travis

Some weird behavior changed w/ async iteration in node 13.7...I'm not sure if this was an unintentional break or not but it definitely diverges in behavior from node 12 and earlier versions in node 13...so for now going to run tests on 13.6 to unblock the tests from running while I track this down.

* Update packages/pg-pool/test/releasing-clients.js

Co-Authored-By: Charmander <~@charmander.me>

* Update .travis.yml

Co-authored-by: Johannes Würbach <johannes.wuerbach@googlemail.com>
Co-authored-by: Charmander <~@charmander.me>
2020-01-28 10:53:29 -06:00

55 lines
1.7 KiB
JavaScript

const Pool = require('../')
const expect = require('expect.js')
const net = require('net')
describe('releasing clients', () => {
it('removes a client which cannot be queried', async () => {
// make a pool w/ only 1 client
const pool = new Pool({ max: 1 })
expect(pool.totalCount).to.eql(0)
const client = await pool.connect()
expect(pool.totalCount).to.eql(1)
expect(pool.idleCount).to.eql(0)
// reach into the client and sever its connection
client.connection.end()
// wait for the client to error out
const err = await new Promise((resolve) => client.once('error', resolve))
expect(err).to.be.ok()
expect(pool.totalCount).to.eql(1)
expect(pool.idleCount).to.eql(0)
// try to return it to the pool - this removes it because its broken
client.release()
expect(pool.totalCount).to.eql(0)
expect(pool.idleCount).to.eql(0)
// make sure pool still works
const { rows } = await pool.query('SELECT NOW()')
expect(rows).to.have.length(1)
await pool.end()
})
it('removes a client which is ending', async () => {
// make a pool w/ only 1 client
const pool = new Pool({ max: 1 })
expect(pool.totalCount).to.eql(0)
const client = await pool.connect()
expect(pool.totalCount).to.eql(1)
expect(pool.idleCount).to.eql(0)
// end the client gracefully (but you shouldn't do this with pooled clients)
client.end()
// try to return it to the pool
client.release()
expect(pool.totalCount).to.eql(0)
expect(pool.idleCount).to.eql(0)
// make sure pool still works
const { rows } = await pool.query('SELECT NOW()')
expect(rows).to.have.length(1)
await pool.end()
})
})