From 5a0b1ef56d2074d608c86ccd3f9091f0881dd0b4 Mon Sep 17 00:00:00 2001 From: Danny Calleri Date: Tue, 9 Jan 2018 16:25:59 +0100 Subject: [PATCH] Better documentation for setupTests.js when ejecting (#3656) * Better documentation for setupTests.js when ejecting When running `npm run eject` before creating `src/setupTests.js`, the resulting `package.json` file, won't contain any entry for it - and this is correct in my opinion, since otherwise Jest will crash - but it's useful to have it documented and avoid pointless waste of time. * Added additional note about src/setupTests.js Added another note about src/setupTests.js and `npm run eject` in Testing Components section * Update README.md * Update README.md --- packages/react-scripts/template/README.md | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/packages/react-scripts/template/README.md b/packages/react-scripts/template/README.md index 377b2fbe099..5cb8d4e23b8 100644 --- a/packages/react-scripts/template/README.md +++ b/packages/react-scripts/template/README.md @@ -1334,7 +1334,7 @@ import Adapter from 'enzyme-adapter-react-16'; configure({ adapter: new Adapter() }); ``` -(Note that **if you already ejected** before creating `src/setupTests.js`, this won’t work unless you set [this Jest option](https://facebook.github.io/jest/docs/en/configuration.html#setuptestframeworkscriptfile-string) to point to `src/setupTests.js`.) +>Note: Keep in mind that if you decide to "eject" before creating `src/setupTests.js`, the resulting `package.json` file won't contain any reference to it. [Read here](#initializing-test-environment) to learn how to add this after ejecting. Now you can write a smoke test with it: @@ -1425,7 +1425,14 @@ const localStorageMock = { global.localStorage = localStorageMock ``` -Note that **if you already ejected** before creating `src/setupTests.js`, this won’t work unless you set [this Jest option](https://facebook.github.io/jest/docs/en/configuration.html#setuptestframeworkscriptfile-string) to point to `src/setupTests.js`. +>Note: Keep in mind that if you decide to "eject" before creating `src/setupTests.js`, the resulting `package.json` file won't contain any reference to it, so you should manually create the property `setupTestFrameworkScriptFile` in the configuration for Jest, something like the following: + +>```js +>"jest": { +> // ... +> "setupTestFrameworkScriptFile": "/src/setupTests.js" +> } +> ``` ### Focusing and Excluding Tests