try jest

.github/workflows/run-tests.yml

@@ -0,0 +1,18 @@
+name: Run Tests
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js 14
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14
+      - run: npm i
+      - run: npm run test
+      - run: npm run test-integration

.gitignore

@@ -62,4 +62,5 @@ typings/
 
 test/integration/node_modules
 test/integration/output
+coverage
 

README.md

@@ -159,7 +159,7 @@ setTestHost(process.env.TEST_HOST);
 
 Please send your config hooks!
 
-If you feel that `codecept.conf.js` becomes too complicated and you know how to make it simpler, 
+If you feel that `codecept.conf.js` becomes too complicated, and you know how to make it simpler, 
 send a pull request with a config hook to solve your case.
 
 Good ideas for config hooks:
@@ -174,8 +174,8 @@ To create a custom hook follow this rules.
 2. Create a js module that exports a function.
 3. Require `config` object from `codeceptjs` package.
 4. Use `config.addHook((config) => {})` to set a hook for configuration
-5. Add a test to `index_test.js`
-6. Run `mocha index_test.js`
+5. Add a test to `index.test.js`
+6. Run `npm run test`
 
 See current hooks as examples.
 

hooks/setWindowSize.js

@@ -10,8 +10,8 @@ module.exports = function(width, height) {
 
       // prepare window for a browser
       cfg.helpers.Puppeteer.chrome = merge(
-        cfg.helpers.Puppeteer.chrome || {}, 
-        { args, defaultViewport: null, } // disables viewport emualtion. See https://github.com/Codeception/CodeceptJS/issues/1209#issuecomment-522487793
+        cfg.helpers.Puppeteer.chrome || {},
+        { args, defaultViewport: null, } // disables viewport emulation. See https://github.com/Codeception/CodeceptJS/issues/1209#issuecomment-522487793
       );
     }