Add basically test for 3 databases

scripts/util/filesystem.js

@@ -0,0 +1,57 @@
+/*
+ * 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 rimraf = require('rimraf')
+const { mkdir, readFile, writeFile } = require('fs')
+
+function mkdirAsync(path) {
+  return new Promise((resolve, reject) => {
+    mkdir(path, (err) => {
+      if (err) reject(err)
+      else resolve()
+    })
+  })
+}
+
+function rimrafAsync(path) {
+  return new Promise((resolve, reject) => {
+    rimraf(path, (err) => {
+      if (err) reject(err)
+      else resolve()
+    })
+  })
+}
+
+function readFileAsync(path) {
+  return new Promise((resolve, reject) => {
+    readFile(path, (err, res) => {
+      if (err) reject(err)
+      else resolve(res)
+    })
+  })
+}
+
+function writeFileAsync(path, content) {
+  return new Promise((resolve, reject) => {
+    writeFile(path, content, (err) => {
+      if (err) reject(err)
+      else resolve()
+    })
+  })
+}
+
+module.exports = { mkdirAsync, rimrafAsync, readFileAsync, writeFileAsync }