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release-process.md

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Release Process

These procedures concern the release process for the Cypress binary and cypress npm module.

The @cypress/-namespaced NPM packages that live inside the /npm directory are automatically published to npm (with semantic-release) upon being merged into master. You can read more about this in CONTRIBUTING.md.

Anyone can build the binary and npm package locally, but you can only deploy the Cypress application and publish the npm module cypress if you are a member of the cypress npm organization.

Publishing

Prerequisites

  • Ensure you have the following permissions set up:

    • An AWS account with permission to access and write to the AWS S3, i.e. the Cypress CDN.
    • Permissions for your npm account to publish the cypress package.
    • Permissions to update releases in ZenHub.

  • Set up the following environment variables:

    • For the release-automations steps, you will need setup the following envs:

      • GitHub token - generated yourself in github.
      • ZenHub API token to interact with Zenhub. Found in 1Password.
      • The cypress-bot GitHub app credentials. Found in 1Password.
      GITHUB_TOKEN="..."
ZENHUB_API_TOKEN="..."
GITHUB_APP_CYPRESS_INSTALLATION_ID=
GITHUB_APP_ID=
GITHUB_PRIVATE_KEY=

    • For purging the Cloudflare cache (part of the move-binaries step), you'll need CF_ZONEID and CF_TOKEN set. These can be found in 1Password.

      CF_ZONEID="..."
CF_TOKEN="..."

    • If you don't have access to 1Password, ask a team member who has done a deploy.

    • Tip: Use as-a to manage environment variables for different situations.

Before Publishing a New Version

In order to publish a new version of the cypress package to the npm registry, CI must build and test it across multiple platforms and test projects. CI is set up to do the following on every commit to develop:

  1. Build the npm package with the next target version baked in.
  2. Build the Linux, Mac & Windows binaries on CircleCI.
  3. Upload the binaries and the new npm package to the AWS S3 Bucket cdn.cypress.io under the "beta" folder.
  4. Launch test projects using the newly-uploaded package & binary instead of installing from the npm registry.

Multiple test projects are launched for each target operating system and the results are reported back to GitHub using status checks so that you can see if a change has broken real-world usage of Cypress. You can see the progress of the test projects by opening the status checks on GitHub:

Screenshot of status checks

Steps to Publish a New Version

In the following instructions, "X.Y.Z" is used to denote the next version of Cypress being published.

  1. Confirm that every issue labeled stage: pending release has a ZenHub release set. Tip: there is a command in release-automations's issues-in-release tool to list and check such issues. Without a ZenHub release issues will not be included in the right changelog.

  2. Create or review the release-specific documentation and changelog in cypress-documentation. If there is not already a release-specific PR open, create one.

    • Use release-automations's issues-in-release tool to generate a starting point for the changelog, based off of ZenHub: 
      cd packages/issues-in-release
yarn do:changelog --release <release label>
    • Ensure the changelog is up-to-date and has the correct date.
    • Merge any release-specific documentation changes into the main release PR.
    • You can view the doc's branch deploy preview by clicking 'Details' on the PR's netlify-cypress-docs/deploy-preview GitHub status check.

  3. develop should contain all of the changes made in master. However, this occasionally may not be the case.

    • Ensure that master does not have any additional commits that are not on develop.
    • Ensure all auto-generated pull requests designed to merge master into develop have been successfully merged.

  4. If there is a new cypress-example-kitchensink version, update the corresponding dependency in packages/example to that new version.

  5. Once the develop branch is passing for all test projects with the new changes and the linux-x64 binary is present at https://cdn.cypress.io/beta/binary/X.Y.Z/linux-x64/<sha>/cypress.zip, and the linux-x64 cypress npm package is present at https://cdn.cypress.io/beta/binary/X.Y.Z/linux-x64/<sha>/cypress.tgz, publishing can proceed.

  6. Set up an AWS SSO profile with the Team-CypressApp-Prod role. The release scripts assumes the name of your profile is production. If you have setup your credentials under a different profile, be sure to set the AWS_PROFILE environment variable. Log into AWS SSO with aws sso login --profile <name_of_profile>.

  7. Use the prepare-release-artifacts script (Mac/Linux only) to prepare the latest commit to a stable release. When you run this script, the following happens:

    • the binaries for <commit sha> are moved from beta to the desktop folder for <new target version> in S3
    • the Cloudflare cache for this version is purged
    • the pre-prod cypress.tgz NPM package is converted to a stable NPM package ready for release
    yarn prepare-release-artifacts --sha <commit sha> --version <new target version>

    You can pass --dry-run to see the commands this would run under the hood.

  8. Validate you are logged in to npm with npm whoami. Otherwise log in with npm login.

  9. Publish the generated npm package under the dev tag, using your personal npm account.

    npm publish /tmp/cypress-prod.tgz --tag dev

  10. Double-check that the new version has been published under the dev tag using npm info cypress or available-versions. latest should still point to the previous version. Example output:

    dist-tags:
dev: 3.4.0     latest: 3.3.2

  11. Test cypress@X.Y.Z to make sure everything is working.

    • Install the new version: npm install -g cypress@X.Y.Z
    • Run a quick, manual smoke test:
      • cypress open
      • Go into a project, run a quick test, make sure things look right
    • Install the new version into an established project and run the tests there
    • Optionally, do more thorough tests, for example test the new version of Cypress against the Cypress dashboard repo.

  12. Make the new npm version the "latest" version by updating the dist-tag latest to point to the new version:

    npm dist-tag add cypress@X.Y.Z

  13. Run binary-release to update the download server's manifest. This will also ensure the binary for the version is downloadable for each system.

    yarn binary-release --version X.Y.Z

  14. If needed, push out any updated changes to the links manifest to on.cypress.io.

  15. If needed, deploy the updated cypress-example-kitchensink to example.cypress.io by following these instructions under "Deployment".

  16. Update the releases in ZenHub:

    • Close the current release in ZenHub.
    • Create a new patch release (and a new minor release, if this is a minor release) in ZenHub, and schedule them both to be completed 2 weeks from the current date.
    • Move all issues that are still open from the current release to the appropriate future release.

  17. Bump version in package.json, commit it to develop, tag it with the version, and push the tag up:

    git commit -am "release X.Y.Z [skip ci]"
git log --pretty=oneline
# copy sha of the previous commit
git tag -a vX.Y.Z <sha>
git push origin vX.Y.Z

  18. Merge develop into master and push both branches up. Note: pushing to master will automatically publish any independent npm packages that have not yet been published.

    git push origin develop
git checkout master
git merge develop
git push origin master

  19. Inside of cypress-io/release-automations:

    • Publish GitHub release to cypress-io/cypress/releases using package set-releases:

      cd packages/set-releases && npm run release-log -- --version X.Y.Z

    • Add a comment to each GH issue that has been resolved with the new published version using package issues-in-release:

      cd packages/issues-in-release && npm run do:comment -- --release X.Y.Z

    • Confirm there are no issues with the label stage: pending release left

  20. Publish a new docker image in cypress-docker-images under included for the new cypress version. Note: we use the base image with the Node version matching the bundled Node version. Instructions for updating cypress-docker-images can be found here.

  21. Update example projects to the new version. For most projects, you can go to the Renovate dependency issue and check the box next to Update dependency cypress to X.Y.Z. It will automatically create a PR. Once it passes, you can merge it. Try updating at least the following projects:

  22. Check if any test or example repositories have a branch for testing the features or fixes from the newly published version x.y.z. The branch should also be named x.y.z. Check all cypress-test-* and cypress-example-* repositories, and if there is a branch named x.y.z, merge it into master.

    Test Repos

    Example Repos

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