Add basically test for 3 databases

scripts/util/database/postgres.js

@@ -0,0 +1,75 @@
+/*
+ * server component for the TimeLimit App
+ * Copyright (C) 2019 - 2021 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+const { resolve } = require('path')
+const { spawn } = require('child_process')
+const { tempDir } = require('./helper.js')
+const { generateShortToken, generateToken } = require('../token.js')
+const { rimrafAsync, mkdirAsync, readFileAsync, writeFileAsync } = require('../filesystem.js')
+const { spawnAsync } = require('../process.js')
+const { sleep } = require('../sleep.js')
+
+async function startPostgres() {
+  try { await mkdirAsync(tempDir) } catch (ex) {/* ignore */}
+
+  const instanceDir = resolve(tempDir, generateShortToken())
+  const dataDir = resolve(instanceDir, 'data')
+  const socketDir = resolve(instanceDir, 'socket')
+
+  await rimrafAsync(instanceDir)
+  await mkdirAsync(instanceDir); await mkdirAsync(dataDir); await mkdirAsync(socketDir)
+
+  await spawnAsync('initdb', ['--locale=en_US.UTF-8', '-E', ' UTF8', '-D', dataDir], { stdio: 'inherit' })
+
+  const configFilePath = resolve(dataDir, 'postgresql.conf')
+  const configFileContent = (await readFileAsync(configFilePath)) + '\n'
+    + 'unix_socket_directories = \'' + socketDir + '\'' + '\n'
+    + 'listen_addresses = \'\' # do not listen using TCP'
+
+  await writeFileAsync(configFilePath, configFileContent)
+
+  const task = spawn('postgres', ['-D', dataDir], { stdio: 'inherit' })
+  task.on('exit', () => rimrafAsync(instanceDir))
+
+  for (let i = 0; i < 100; i++) {
+    const { status } = await spawnAsync('pg_isready', ['-h', socketDir])
+
+    if (status === 0) break
+
+    await sleep(100)
+  }
+
+  const database = generateShortToken()
+  const username = generateShortToken()
+  const password = generateToken() // this database accepts anything
+
+  await spawnAsync('createuser', ['-h', socketDir, username], { stdio: 'inherit' })
+  await spawnAsync('createdb', ['-h', socketDir, database], { stdio: 'inherit' })
+
+  return {
+    shutdown: () => task.kill('SIGINT'),
+    socketDir,
+    dataDir,
+    database,
+    username,
+    password,
+    connectionUrl: 'postgres://' +  username + ':' + password + '@localhost/' + database + '?host=' + encodeURIComponent(socketDir),
+    type: 'postgres'
+  }
+}
+
+module.exports = { startPostgres }