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Count only test query itself (#87)

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* Count only test query itself

This breaks more obviously in PostgreSQL 10 (https://wiki.postgresql.org/wiki/New_in_postgres_10#Significant_Expansion_of_Wait_Events_in_pg_stat_activity).

* Fix query counting for PostgreSQL 9.1
This commit is contained in:
Charmander 2018-05-04 17:59:39 +00:00 committed by Brian C
parent 2f14cb1a0f
commit fabf39c606
1 changed files with 10 additions and 4 deletions
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14
test/sizing.js
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@ -33,11 +33,17 @@ describe('pool size of 1', () => {
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')
})
// the query text column name changed in PostgreSQL 9.2
const versionResult = yield pool.query('SHOW server_version_num')
const version = parseInt(versionResult.rows[0].server_version_num, 10)
const queryColumn = version < 90200 ? 'current_query' : 'query'
const queryText = 'SELECT COUNT(*) as counts FROM pg_stat_activity WHERE ' + queryColumn + ' = $1'
const queries = _.times(20, () =>
pool.query(queryText, [queryText]))
const results = yield Promise.all(queries)
const counts = results.map(res => parseInt(res.rows[0].counts), 10)
const counts = results.map(res => parseInt(res.rows[0].counts, 10))
expect(counts).to.eql(_.times(20, i => 1))
return yield pool.end()
}))