Move tests to GitHub Actions (#36)

* Initial GHA infrastucture

* Apply dask version constraint in CI

* Add cancel workflow

* Add coverage back in

* Remove .travis.yml

* Update README badge

.github/workflows/cancel.yml

@@ -0,0 +1,15 @@
+name: Cancel
+
+on:
+  workflow_run:
+    workflows: ["Tests", "Upstream", "Linting"]
+    types:
+      - requested
+
+jobs:
+  cancel:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: styfle/cancel-workflow-action@0.8.0
+      with:
+        workflow_id: ${{ github.event.workflow.id }}

.github/workflows/tests.yml

@@ -0,0 +1,36 @@
+name: Tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest, ubuntu-latest, macos-latest]
+        python-version: [3.6, 3.7, 3.8, 3.9]
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v2
+
+      - name: Setup Conda Environment
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          miniconda-version: "latest"
+          python-version: ${{ matrix.python-version }}
+          environment-file: ci/environment-${{ matrix.python-version }}.yml
+          activate-environment: xhistogram_test_env
+          auto-activate-base: false
+
+      - name: Install
+        shell: bash -l {0}
+        run: python -m pip install -e .
+
+      - name: Run tests
+        shell: bash -l {0}
+        run: python -m pytest --cov=xhistogram --cov-report=xml xhistogram
+
+      - name: Coverage
+        uses: codecov/codecov-action@v1

.github/workflows/upstream.yml

@@ -0,0 +1,40 @@
+name: Upstream
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.9]
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v2
+
+      - name: Setup Conda Environment
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          miniconda-version: "latest"
+          python-version: ${{ matrix.python-version }}
+          environment-file: ci/environment-${{ matrix.python-version }}.yml
+          activate-environment: xhistogram_test_env
+          auto-activate-base: false
+
+      - name: Install upstream packages
+        shell: bash -l {0}
+        run: |
+          python -m pip install git+https://github.com/dask/dask.git
+          python -m pip install git+https://github.com/pydata/xarray.git
+
+      - name: Install
+        shell: bash -l {0}
+        run: python -m pip install -e .
+
+      - name: Run tests
+        shell: bash -l {0}
+        run: python -m pytest --cov=xhistogram --cov-report=xml xhistogram
+
+      - name: Coverage
+        uses: codecov/codecov-action@v1

README.rst

@@ -1,7 +1,7 @@
 xhistogram: Fast, flexible, label-aware histograms for numpy and xarray
 =======================================================================
 
-|pypi| |conda forge| |Build Status| |codecov| |docs| |linting| |license|
+|pypi| |conda forge| |tests| |linting| |codecov| |docs| |license|
 
 For more information, including installation instructions, read the full
 `xhistogram documentation`_.
@@ -16,8 +16,8 @@ For more information, including installation instructions, read the full
    :target: https://anaconda.org/conda-forge/xhistogram
 .. |DOI| image:: https://zenodo.org/badge/41581350.svg
    :target: https://zenodo.org/badge/latestdoi/41581350
-.. |Build Status| image:: https://travis-ci.org/xgcm/xhistogram.svg?branch=master
-   :target: https://travis-ci.org/xgcm/xhistogram
+.. |tests| image:: https://github.com/xgcm/xhistogram/actions/workflows/tests.yml/badge.svg
+   :target: https://github.com/xgcm/xhistogram/actions/workflows/tests.yml
    :alt: travis-ci build status
 .. |codecov| image:: https://codecov.io/github/xgcm/xhistogram/coverage.svg?branch=master
    :target: https://codecov.io/github/xgcm/xhistogram?branch=master

ci/environment-py36.yml → ci/environment-3.6.yml

@@ -8,7 +8,7 @@ dependencies:
   # see https://github.com/dask/dask/pull/7391
   # and https://github.com/xgcm/xhistogram/issues/27
   - dask!=2021.3.0
-  - numpy
+  - numpy=1.16
   - pytest
   - pip
   - pip:

ci/environment-py37.yml → ci/environment-3.7.yml

@@ -8,7 +8,7 @@ dependencies:
   # see https://github.com/dask/dask/pull/7391
   # and https://github.com/xgcm/xhistogram/issues/27
   - dask!=2021.3.0
-  - numpy
+  - numpy=1.17
   - pytest
   - pip
   - pip:

ci/environment-py36-numpy1.16.yml → ci/environment-3.9.yml

@@ -1,14 +1,14 @@
 name: xhistogram_test_env
 dependencies:
-  - python=3.6
+  - python=3.9
   - xarray
   # Dask 2021.3.0 introduced a regression which broke xhistogram.
   # This regression should be fixed in the next Dask release and we
   # should remove the dask version pinning below.
   # see https://github.com/dask/dask/pull/7391
   # and https://github.com/xgcm/xhistogram/issues/27
   - dask!=2021.3.0
-  - numpy==1.16
+  - numpy
   - pytest
   - pip
   - pip:

setup.cfg

@@ -11,4 +11,7 @@ parentdir_prefix = xhistogram-
 
 [flake8]
 exclude = __init__.py,versioneer.py,_version.py
-max-line-length = 120
+max-line-length = 120
+
+[tool:pytest]
+addopts = -v --durations=10