ci_tests.yaml

# Test PyGMT on Linux/macOS/Windows
#
# This workflow runs regular PyGMT tests and uploads test coverage reports stored
# in `.coverage.xml` to https://app.codecov.io/gh/GenericMappingTools/pygmt
# via the [Codecov GitHub Action](https://github.com/codecov/codecov-action).
# More codecov related configurations are stored in `.github/codecov.yml`.
# If any tests fail, it also uploads the diff images as workflow artifacts.
#
# It is run:
# 1. on every commit to the main branch
# 2. on every commit to the pull request branches, unless the pull requests only
#    contain non-code changes.
# 3. when a new release is published
#
# It is also scheduled to run daily on the main branch.
#
# In draft pull request, only two jobs on Linux are triggered to save on
# Continuous Integration resources:
#
# - Minimum supported Python/NumPy/Pandas/Xarray versions following [SPEC 0](https://scientific-python.org/specs/spec-0000/)
# - Latest Python/NumPy versions + optional packages (e.g. GeoPandas)
#
name: Tests

on:
  push:
    branches: [ main ]
    paths:
      - 'pygmt/**'
      - '.github/workflows/ci_tests.yaml'
  pull_request:
    types: [opened, reopened, synchronize, ready_for_review]
    paths:
      - 'pygmt/**'
      - '.github/workflows/ci_tests.yaml'
  workflow_dispatch:
  release:
    types:
      - published
  # Schedule daily tests
  schedule:
    - cron: '0 0 * * *'

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

jobs:
  test:
    name: ${{ matrix.os }} - Python ${{ matrix.python-version }} / NumPy ${{ matrix.numpy-version }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        python-version: ['3.10', '3.12']
        os: [ubuntu-latest, macos-latest, windows-latest]
        # Is it a draft Pull Request (true or false)?
        isDraft:
          - ${{ github.event.pull_request.draft }}
        # Only run two jobs (Ubuntu + Python 3.10/3.12) for draft PRs
        exclude:
          - os: macos-latest
            isDraft: true
          - os: windows-latest
            isDraft: true
        # Pair Python 3.10 with the minimum supported versions of NumPy/Pandas/Xarray
        # and Python 3.12 with the latest versions of NumPy/Pandas/Xarray
        # Only install optional packages on Python 3.12
        include:
          - python-version: '3.10'
            numpy-version: '1.23'
            pandas-version: '=1.5'
            xarray-version: '=2022.06'
            optional-packages: ''
          - python-version: '3.12'
            numpy-version: '1.26'
            pandas-version: ''
            xarray-version: ''
            optional-packages: ' contextily geopandas ipython pyarrow rioxarray sphinx-gallery'

    timeout-minutes: 30
    defaults:
      run:
        shell: bash -l {0}

    # Environment variables used by codecov
    env:
      OS: ${{ matrix.os }}
      PYTHON: ${{ matrix.python-version }}
      NUMPY: ${{ matrix.numpy-version }}

    steps:
      # Checkout current git repository
      - name: Checkout
        uses: actions/checkout@v4.1.4
        with:
          # fetch all history so that setuptools-scm works
          fetch-depth: 0

      # Install Micromamba with conda-forge dependencies
      - name: Setup Micromamba
        uses: mamba-org/setup-micromamba@v1.8.1
        with:
          environment-name: pygmt
          condarc: |
            channels:
              - conda-forge
              - nodefaults
          cache-downloads: false
          cache-environment: true
          create-args: >-
            python=${{ matrix.python-version }}${{ matrix.optional-packages }}
            gmt=6.5.0
            ghostscript=10.03.0
            numpy=${{ matrix.numpy-version }}
            pandas${{ matrix.pandas-version }}
            xarray${{ matrix.xarray-version }}
            netCDF4
            packaging
            build
            dvc
            make
            pip
            pytest
            pytest-cov
            pytest-doctestplus
            pytest-mpl

      # Download cached remote files (artifacts) from GitHub
      - name: Download remote data from GitHub
        run: |
          gh run download -n gmt-cache -D gmt-cache
          # Move downloaded files to ~/.gmt directory and list them
          mkdir -p ~/.gmt
          mv gmt-cache/* ~/.gmt
          rmdir gmt-cache
          # Change modification times of the two files, so GMT won't refresh it
          touch ~/.gmt/gmt_data_server.txt ~/.gmt/gmt_hash_server.txt
          ls -lhR ~/.gmt
        env:
          GH_TOKEN: ${{ github.token }}

      # Pull baseline image data from dvc remote (DAGsHub)
      - name: Pull baseline image data from dvc remote
        run: dvc pull --verbose && ls -lhR pygmt/tests/baseline/

      # Install the package that we want to test
      - name: Install the package
        run: make install

      # Run the regular tests
      - name: Run tests
        run: make test PYTEST_EXTRA="-r P"

      # Upload diff images on test failure
      - name: Upload diff images if any test fails
        uses: actions/upload-artifact@v4
        if: ${{ failure() }}
        with:
          name: artifact-${{ runner.os }}-${{ matrix.python-version }}
          path: tmp-test-dir-with-unique-name

      # Upload coverage to Codecov
      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v4.3.0
        with:
          file: ./coverage.xml # optional
          env_vars: OS,PYTHON,NUMPY
          fail_ci_if_error: false
        env:
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}