Add GitHub action

.github/workflows/build.yml

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+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    env:
+      PYTHON_VERSION: '3.11'
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-python@v4
+        name: Install Python
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Display version
+        run: |
+          python --version
+          pip --version
+
+      - name: Install pypa/build
+        run: |
+          pip install build
+
+      - name: Build a binary wheel and a source tarball
+        run: |
+          python -m build
+
+      - name: Display content dist folder
+        run: |
+          ls -l dist/
+
+      - uses: actions/upload-artifact@v3
+        with:
+          path: ./dist/*
+          name: dist
+
+  test:
+    name: Test Packaging
+    needs: build
+    runs-on: ubuntu-latest
+    env:
+      PYTHON_VERSION: '3.11'
+    steps:
+      - uses: actions/setup-python@v4
+        name: Install Python
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - uses: actions/download-artifact@v3
+
+      - name: Display content working folder
+        run: |
+          ls -R
+
+      - name: Install HyperSpy (dev)
+        run: |
+          pip install https://github.com/hyperspy/hyperspy/archive/refs/heads/RELEASE_next_major.zip
+
+      - name: Install distribution
+        run: |
+          pip install --pre --find-links dist holospy[tests]
+
+      - name: Test distribution
+        run: |
+          pytest --pyargs holospy

.github/workflows/release.yml

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+name: Release
+
+# This workflow builds the wheels "on tag".
+# If run from the hyperspy/hyperspy repository, the wheels will be uploaded to pypi ;
+# otherwise, the wheels will be available as a github artifact.
+on:
+  push:
+    # Sequence of patterns matched against refs/tags
+    tags:
+    - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
+
+jobs:
+  build_wheels:
+    name: Build wheels
+    runs-on: ubuntu-latest
+    env:
+      CIBW_TEST_COMMAND: "pytest --pyargs holospy"
+      CIBW_TEST_EXTRAS: "tests"
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.14.0
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: wheels
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
+  make_sdist:
+    name: Make SDist
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Build SDist
+      run: pipx run build --sdist
+
+    - uses: actions/upload-artifact@v3
+      with:
+        path: dist/*.tar.gz
+
+  upload_to_pypi:
+    needs: [build_wheels, make_sdist]
+    runs-on: ubuntu-latest
+    permissions:
+      # IMPORTANT: this permission is mandatory for trusted publishing
+      id-token: write
+    steps:
+    - name: Download dist
+      uses: actions/download-artifact@v3
+      with:
+        name: artifact
+        path: dist
+
+    - name: Download wheels
+      uses: actions/download-artifact@v3
+      with:
+        name: wheels
+        path: dist
+
+    - name: Display structure of downloaded files
+      run: ls -R
+      working-directory: dist
+
+    - uses: pypa/gh-action-pypi-publish@release/v1
+      if: github.repository_owner == 'hyperspy'
+      # See https://docs.pypi.org/trusted-publishers/using-a-publisher/
+
+  create_release:
+    # TODO: once we are happy with the workflow
+    # setup zenodo to create a DOI automatically
+    needs: upload_to_pypi
+    permissions:
+      contents: write
+    name: Create Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Create Release
+        id: create_release
+        uses: softprops/action-gh-release@de2c0eb89ae2a093876385947365aca7b0e5f844

.github/workflows/tests.yml

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+name: Tests
+
+on: [push, pull_request]
+
+jobs:
+  run_test_site:
+    name: ${{ matrix.os }}-py${{ matrix.PYTHON_VERSION }}${{ matrix.LABEL }}
+    runs-on: ${{ matrix.os }}-latest
+    timeout-minutes: 30
+    env:
+      MPLBACKEND: agg
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu, windows, macos]
+        PYTHON_VERSION: ['3.9', '3.10']
+        LABEL: ['']
+        include:
+          - os: ubuntu
+            PYTHON_VERSION: '3.8'
+          - os: ubuntu
+            PYTHON_VERSION: '3.11'
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-python@v4
+        name: Install Python
+        with:
+          python-version: ${{ matrix.PYTHON_VERSION }}
+
+      - name: Display version
+        run: |
+          python --version
+          pip --version
+
+      - name: Install (HyperSpy dev)
+        # Need to install hyperspy dev until hyperspy 2.0 is released
+        run: |
+          pip install https://github.com/hyperspy/hyperspy/archive/refs/heads/RELEASE_next_major.zip
+
+      - name: Install
+        shell: bash
+        run: |
+          pip install -e .[tests]
+
+      - name: Pip list
+        run: |
+          pip list
+
+      - name: Run test suite
+        run: |
+          pytest --pyargs holospy
+
+      - name: Upload coverage to Codecov
+        if: ${{ always() }}
+        uses: codecov/codecov-action@v3

.gitignore

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+/docs/_build/*
+/build/*
+/dist/*
+/holospy.egg-info/*
+*__pycache__*
+*pyd
+.spyproject/*
+.idea

holospy/conftest.py

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+# -*- coding: utf-8 -*-
+# Copyright 2007-2023 The HyperSpy developers
+#
+# This file is part of HyperSpy.
+#
+# HyperSpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# HyperSpy is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with HyperSpy. If not, see <https://www.gnu.org/licenses/#GPL>.
+
+import matplotlib
+
+def pytest_configure(config):
+    matplotlib.use('agg')