92 lines
2.6 KiB
JavaScript
92 lines
2.6 KiB
JavaScript
var assert = require('assert')
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var gonna = require('gonna')
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var _ = require('lodash')
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var async = require('async')
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var concat = require('concat-stream')
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var pg = require('pg.js')
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var copy = require('../').to
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var client = function() {
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var client = new pg.Client()
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client.connect()
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return client
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}
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var testConstruction = function() {
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var txt = 'COPY (SELECT * FROM generate_series(0, 10)) TO STDOUT'
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var stream = copy(txt, {highWaterMark: 10})
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assert.equal(stream._readableState.highWaterMark, 10, 'Client should have been set with a correct highWaterMark.')
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}
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testConstruction()
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var testRange = function(top) {
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var fromClient = client()
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var txt = 'COPY (SELECT * from generate_series(0, ' + (top - 1) + ')) TO STDOUT'
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var stream = fromClient.query(copy(txt))
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var done = gonna('finish piping out', 1000, function() {
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fromClient.end()
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})
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stream.pipe(concat(function(buf) {
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var res = buf.toString('utf8')
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var expected = _.range(0, top).join('\n') + '\n'
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assert.equal(res, expected)
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assert.equal(stream.rowCount, top, 'should have rowCount ' + top + ' but got ' + stream.rowCount)
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done()
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}))
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}
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testRange(10000)
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var testLeak = function(rounds) {
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var fromClient = client()
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var txt = 'COPY (SELECT 10) TO STDOUT'
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var runStream = function(num, callback) {
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var stream = fromClient.query(copy(txt))
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stream.on('data', function(data) {
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// Just throw away the data.
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})
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stream.on('end', callback)
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stream.on('error', callback)
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}
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async.timesSeries(rounds, runStream, function(err) {
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assert.equal(err, null)
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assert.equal(fromClient.connection.stream.listeners('close').length, 0)
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assert.equal(fromClient.connection.stream.listeners('data').length, 1)
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assert.equal(fromClient.connection.stream.listeners('end').length, 2)
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assert.equal(fromClient.connection.stream.listeners('error').length, 1)
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fromClient.end()
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})
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}
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testLeak(5)
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var testInternalPostgresError = function() {
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var fromClient = client()
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// This attempts to make an array that's too large, and should fail.
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var txt = "COPY (SELECT array_agg(e) FROM (SELECT generate_series(1, 100000000) AS e) t) TO STDOUT"
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var runStream = function(callback) {
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var stream = fromClient.query(copy(txt))
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stream.on('data', function(data) {
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// Just throw away the data.
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})
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stream.on('error', callback)
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}
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runStream(function(err) {
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assert.notEqual(err, null)
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expectedMessage = 'invalid memory alloc request size'
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assert.notEqual(err.toString().indexOf(expectedMessage), -1, 'Error message should mention memory alloc request size.')
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fromClient.end()
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})
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}
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testInternalPostgresError()
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