name: shuffle-tests

on:
  # Allow manually running
  workflow_dispatch:
    inputs:
      per-test-coverage:
        description: Whether to get per-test coverage (uses ./github/workflows/codecov_per_test_coverage.yml)
        required: true
        default: 'true'
  # Run once a week on sunday
  schedule:
    - cron: '0 1 * * 0'

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

env:
  SENTRY_SHUFFLE_TESTS: true

jobs:
  per-test-coverage:
    if: ${{ inputs.per-test-coverage == 'true' || github.event_name == 'schedule' }}
    uses: ./.github/workflows/codecov_per_test_coverage.yml
    secrets: inherit
  backend-test:
    name: run backend tests
    runs-on: ubuntu-20.04
    timeout-minutes: 90
    strategy:
      # This helps not having to run multiple jobs because one fails, thus, reducing resource usage
      # and reducing the risk that one of many runs would turn red again (read: intermittent tests)
      fail-fast: false
      matrix:
        # XXX: When updating this, make sure you also update MATRIX_INSTANCE_TOTAL.
        instance: [0, 1, 2, 3, 4, 5, 6]
        pg-version: ['14']

    env:
      # XXX: MATRIX_INSTANCE_TOTAL must be hardcoded to the length of strategy.matrix.instance.
      MATRIX_INSTANCE_TOTAL: 7

    steps:
      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0
        with:
          # Avoid codecov error message related to SHA resolution:
          # https://github.com/codecov/codecov-bash/blob/7100762afbc822b91806a6574658129fe0d23a7d/codecov#L891
          fetch-depth: '2'

      - name: Setup sentry env
        uses: ./.github/actions/setup-sentry
        id: setup
        with:
          snuba: true
          # Right now, we run so few bigtable related tests that the
          # overhead of running bigtable in all backend tests
          # is way smaller than the time it would take to run in its own job.
          bigtable: true
          pg-version: ${{ matrix.pg-version }}

      - name: Run backend test (${{ steps.setup.outputs.matrix-instance-number }} of ${{ steps.setup.outputs.matrix-instance-total }})
        run: |
          make test-python-ci