This action checks out your repository to $GITHUB_WORKSPACE, so that your workflow can access the contents of your repository.
By default, this is equivalent to running git fetch and git checkout $GITHUB_SHA, so that you'll always have your repo contents at the version that triggered the workflow.
See here to learn what $GITHUB_SHA is for different kinds of events.
steps:- uses:actions/checkout@master- uses:actions/setup-node@masterwith:node-version:10.x - run:npm install- run:npm test
By default, the branch or tag ref that triggered the workflow will be checked out. If you wish to check out a different branch, specify that using with.ref: