2018-10-27 01:10:46 +02:00

45 lines
1.4 KiB
JavaScript

const expect = require('expect.js')
const co = require('co')
const _ = require('lodash')
const describe = require('mocha').describe
const it = require('mocha').it
const Pool = require('../')
describe('pool size of 1', () => {
it('can create a single client and use it once', co.wrap(function * () {
const pool = new Pool({ max: 1 })
expect(pool.waitingCount).to.equal(0)
const client = yield pool.connect()
const res = yield client.query('SELECT $1::text as name', ['hi'])
expect(res.rows[0].name).to.equal('hi')
client.release()
pool.end()
}))
it('can create a single client and use it multiple times', co.wrap(function * () {
const pool = new Pool({ max: 1 })
expect(pool.waitingCount).to.equal(0)
const client = yield pool.connect()
const wait = pool.connect()
expect(pool.waitingCount).to.equal(1)
client.release()
const client2 = yield wait
expect(client).to.equal(client2)
client2.release()
return yield pool.end()
}))
it('can only send 1 query at a time', co.wrap(function * () {
const pool = new Pool({ max: 1 })
const queries = _.times(20, (i) => {
return pool.query('SELECT COUNT(*) as counts FROM pg_stat_activity')
})
const results = yield Promise.all(queries)
const counts = results.map(res => parseInt(res.rows[0].counts), 10)
expect(counts).to.eql(_.times(20, i => 1))
return yield pool.end()
}))
})