create-demo-pr.sh

#!/bin/bash

set -e

if [ "$BROWSERSTACK_USERNAME" == "" ] || [ "$BROWSERSTACK_ACCESS_KEY" == "" ]; then
  echo 'Error: Please initialize environment variables BROWSERSTACK_USERNAME and BROWSERSTACK_ACCESS_KEY with your BrowserStack account username and access key, before running tests'
  exit 1
fi

if ! [ -x "$(command -v hub)" ]; then
  echo 'Error: hub is not installed (https://hub.github.com/). Please run "brew install hub".' >&2
  exit 1
fi

NOW=`date +%d%H%M%S`
BASE_BRANCH="main-$NOW"
BRANCH="update-test-$NOW"
if [ ${CI_USER_ID} != '' ]
then
  BASE_BRANCH=${CI_USER_ID}_${BASE_BRANCH}
  BRANCH=${CI_USER_ID}_${BRANCH}
fi

# cd to current directory as root of script
cd "$(dirname "$0")"

# Create a "main-123123" branch for the PR's baseline.
# This allows demo PRs to be merged without fear of breaking the actual main.
git checkout main
git checkout -b $BASE_BRANCH
git push origin $BASE_BRANCH

# Create the update-test-123123 PR. It is always a fork of the update-test-base branch.
git checkout update-test-base
git checkout -b $BRANCH
git commit --amend -m 'Change test details.'
git push origin $BRANCH
PR_NUM=$(hub pull-request -b $BASE_BRANCH -m 'Change test details.' | grep -oE '[0-9]+')

# Upload Apps to BrowserStack
npm run upload-app

export PERCY_BRANCH=$BRANCH
export PERCY_PULL_REQUEST=$PR_NUM

npm run percy:test

# Create the fake "ci/service: Tests passed" notification on the PR.
# Uses a personal access token (https://github.com/settings/tokens) which has scope "repo:status".
curl \
  -u $GITHUB_USER:$GITHUB_TOKEN \
  -d '{"state": "success", "target_url": "https://app-automate.browserstack.com/dashboard/v2", "description": "Tests passed", "context": "ci/service"}' \
  "https://api.github.com/repos/browserstack/app-percy-demo/statuses/$(git rev-parse --verify HEAD)"

git checkout main
git branch -D $BASE_BRANCH
git branch -D $BRANCH