fix(repository): Move backend code into subdirectory

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

backend/test/utils.ts

@@ -0,0 +1,22 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import { promises as fs } from 'fs';
+
+/**
+ * Ensures the directory at `path` is deleted.
+ * If `path` does not exist, nothing happens.
+ */
+export async function ensureDeleted(path: string): Promise<void> {
+  try {
+    await fs.rm(path, { recursive: true });
+  } catch (e) {
+    if (e.code && e.code == 'ENOENT') {
+      // ignore error, path is already deleted
+      return;
+    }
+    throw e;
+  }
+}