Guide.Jest.md

id	title
Guide.Jest	Jest

Usage

0. Use the Getting Started Guide to set up Detox

1. Install Jest

npm install --save-dev jest

2. Run detox init

detox init -r jest

Please note, however, that the generated configuration files are not compatible with older versions of Jest (23.x or older).

3. Modify package.json

"scripts": {
    "test:e2e": "detox test -c ios.sim.debug",
    "test:e2e:build": "detox build"
},
"detox": {
  "test-runner": "jest",
  "runner-config": "e2e/config.json"
  ...
}

Writing Tests

There are some things you should notice:

• Don't worry about mocks being used, Detox works on the compiled version of your app.
• Detox exposes it's primitives (expect, device, ...) globally, it will override Jest's global expect object.

How to run unit test and E2E tests in the same project

• If you have a setup file for the unit tests pass ./jest/setup implementation into your unit setup.
• Call your E2E tests using detox-cli: detox test