add (#7939)

Author: SirajChokshi

docs-src/docs/testing.md

@@ -1,3 +1,8 @@
+---
+title: Testing
+slug: testing.html
+---
+
 # Testing
 
 Writing tests for your RxDB application is crucial to ensure reliability. Because RxDB runs in many different environments (Browser, [Node.js](nodejs-database.md), [React Native](react-native-database.md), [Electron](electron-database.md), ...), testing strategies might vary. However, there are some common patterns that make testing easier and faster.