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53
backend/apis/nodejs/node_modules/pg-pool/test/releasing-clients.js
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53
backend/apis/nodejs/node_modules/pg-pool/test/releasing-clients.js
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const Pool = require('../')
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const expect = require('expect.js')
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describe('releasing clients', () => {
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it('removes a client which cannot be queried', async () => {
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// make a pool w/ only 1 client
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const pool = new Pool({ max: 1 })
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expect(pool.totalCount).to.eql(0)
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const client = await pool.connect()
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expect(pool.totalCount).to.eql(1)
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expect(pool.idleCount).to.eql(0)
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// reach into the client and sever its connection
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client.connection.end()
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// wait for the client to error out
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const err = await new Promise((resolve) => client.once('error', resolve))
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expect(err).to.be.ok()
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expect(pool.totalCount).to.eql(1)
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expect(pool.idleCount).to.eql(0)
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// try to return it to the pool - this removes it because its broken
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client.release()
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expect(pool.totalCount).to.eql(0)
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expect(pool.idleCount).to.eql(0)
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// make sure pool still works
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const { rows } = await pool.query('SELECT NOW()')
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expect(rows).to.have.length(1)
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await pool.end()
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})
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it('removes a client which is ending', async () => {
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// make a pool w/ only 1 client
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const pool = new Pool({ max: 1 })
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expect(pool.totalCount).to.eql(0)
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const client = await pool.connect()
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expect(pool.totalCount).to.eql(1)
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expect(pool.idleCount).to.eql(0)
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// end the client gracefully (but you shouldn't do this with pooled clients)
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client.end()
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// try to return it to the pool
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client.release()
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expect(pool.totalCount).to.eql(0)
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expect(pool.idleCount).to.eql(0)
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// make sure pool still works
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const { rows } = await pool.query('SELECT NOW()')
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expect(rows).to.have.length(1)
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await pool.end()
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})
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})
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