## Description
This change is to config jest puppeteer in dev-example
~~~
tong@tongchen-pc:~/workspace/FluidFramework/packages/tools/devtools/devtools-example$
npm run test:jest
> @fluid-example/[email protected] test:jest
> jest --detectOpenHandles
Determining test suites to run...<i> [webpack-dev-server] Project is
running at:
<i> [webpack-dev-server] Loopback: http://localhost:8231/
<i> [webpack-dev-server] On Your Network (IPv4):
http://172.21.49.168:8231/
<i> [webpack-dev-server] Content not from webpack is served from
'/home/tong/workspace/FluidFramework/packages/tools/devtools/devtools-example/public'
directory
<i> [webpack-dev-middleware] wait until bundle finished: /
PASS src/test/ExampleUi.test.ts (23.048 s)
End to end tests
✓ Smoke: verify test app can be launched (733 ms)
Test Suites: 1 passed, 1 total
Tests: 1 passed, 1 total
Snapshots: 0 total
Time: 23.088 s, estimated 24 s
Ran all test suites.
<i> [webpack-dev-server] Gracefully shutting down. To force exit, press
^C again. Please wait...
~~~