Transitioning to GitHub actions (#372)

* Create tests.yml

* Update tests.yml

* Update README.rst

* Delete .travis.yml

* Delete .appveyor.yml

* Delete tox.ini

* Update tests.yml

* Update index.rst

.github/workflows/tests.yml

@@ -0,0 +1,84 @@
+name: Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  tests:
+    name: "py${{ matrix.python-version }} / ${{ matrix.os }} / extras: ${{ matrix.extras }}"
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        python-version: ["3.6", "3.7", "3.8", "3.9"]
+        extras: [true]
+        os: ["ubuntu-latest"]
+        include:
+          - python-version: "3.8"
+            extras: false
+            os: "ubuntu-latest"
+          - python-version: "3.8"
+            extras: true
+            os: "macos-latest"
+          - python-version: "3.8"
+            extras: true
+            os: "windows-latest"
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      if: ${{ matrix.extras }}
+      run: |
+        python -m pip install -U pip
+        python -m pip install -e ".[extras,tests]"
+    - name: Install dependencies without extras
+      if: ${{ !matrix.extras }}
+      run: |
+        python -m pip install -U pip
+        python -m pip install -e ".[tests]"
+    - name: Run tests
+      run: |
+        python -m pytest -v src/emcee/tests --cov emcee
+    - name: Get unique id
+      if: ${{ matrix.os != 'windows-latest' }}
+      id: unique-id
+      env:
+        STRATEGY_CONTEXT: ${{ toJson(strategy) }}
+      run: |
+        export JOB_ID=`echo $STRATEGY_CONTEXT | md5sum`
+        echo "::set-output name=id::$JOB_ID"
+    - uses: actions/upload-artifact@v2
+      if: ${{ matrix.os != 'windows-latest' }}
+      with:
+        name: cov-${{ steps.unique-id.outputs.id }}
+        path: .coverage
+
+  coverage:
+    name: "Merge and upload coverage"
+    needs: tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - name: Download all artifacts
+        uses: actions/download-artifact@v2
+      - name: Merge and upload coverage
+        run: |
+          python -m pip install coveralls
+          find . -name \.coverage -exec coverage combine --append {} \;
+          coveralls
+        env:
+          GITHUB_TOKEN: ${{ secrets.github_token }}

README.rst

@@ -5,10 +5,8 @@ emcee
 
 .. image:: https://img.shields.io/badge/GitHub-dfm%2Femcee-blue.svg?style=flat
     :target: https://github.com/dfm/emcee
-.. image:: http://img.shields.io/travis/dfm/emcee/master.svg?style=flat
-    :target: http://travis-ci.org/dfm/emcee
-.. image:: https://ci.appveyor.com/api/projects/status/p8smxvleh8mrcn6m?svg=true&style=flat
-    :target: https://ci.appveyor.com/project/dfm/emcee
+.. image:: https://github.com/dfm/emcee/workflows/Tests/badge.svg
+    :target: https://github.com/dfm/emcee/actions?query=workflow%3ATests
 .. image:: http://img.shields.io/badge/license-MIT-blue.svg?style=flat
     :target: https://github.com/dfm/emcee/blob/master/LICENSE
 .. image:: http://img.shields.io/badge/arXiv-1202.3665-orange.svg?style=flat

docs/index.rst

@@ -18,10 +18,8 @@ emcee has been used in :doc:`quite a few projects in the astrophysical literatur
 
 .. image:: https://img.shields.io/badge/GitHub-dfm%2Femcee-blue.svg?style=flat
     :target: https://github.com/dfm/emcee
-.. image:: https://img.shields.io/travis/dfm/emcee/master.svg?style=flat
-    :target: https://travis-ci.org/dfm/emcee
-.. image:: https://ci.appveyor.com/api/projects/status/p8smxvleh8mrcn6m?svg=true&style=flat
-    :target: https://ci.appveyor.com/project/dfm/emcee
+.. image:: https://github.com/dfm/emcee/workflows/Tests/badge.svg
+    :target: https://github.com/dfm/emcee/actions?query=workflow%3ATests
 .. image:: https://img.shields.io/badge/license-MIT-blue.svg?style=flat
     :target: https://github.com/dfm/emcee/blob/master/LICENSE
 .. image:: https://img.shields.io/badge/arXiv-1202.3665-orange.svg?style=flat