switch to github actions (#81)

.github/workflows/ci.yml

@@ -0,0 +1,74 @@
+name: CI
+
+on: [push]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.6, 3.7, 3.8]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install tox codecov pre-commit
+      
+      # Run tox using the version of Python in `PATH`
+      - name: Run Tox
+        run: tox -e py
+
+      # Run pre-commit (only for python-3.7)
+      - name: run pre-commit
+        if: matrix.python-version == 3.7
+        run: pre-commit run --all-files
+
+      - name: Upload Results
+        if: success()
+        uses: codecov/codecov-action@v1
+        with:
+          file: ./coverage.xml
+          flags: unittests
+          name: ${{ matrix.platform }}-${{ matrix.tox-env }}
+          fail_ci_if_error: false
+
+  publish:
+    needs: [tests]
+    runs-on: ubuntu-latest
+    if: contains(github.ref, 'tags')
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v1
+        with:
+          python-version: "3.x" 
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install tox
+      
+      - name: Set tag version
+        id: tag
+        # https://stackoverflow.com/questions/58177786/get-the-current-pushed-tag-in-github-actions
+        run: echo ::set-output name=tag::${GITHUB_REF#refs/*/}
+
+      - name: Set module version
+        id: module
+        # https://stackoverflow.com/questions/58177786/get-the-current-pushed-tag-in-github-actions
+        run: echo ::set-output name=version::$(python setup.py --version)
+
+      - name: Build and publish
+        if: steps.tag.outputs.tag == steps.module.outputs.version
+        env:
+          TOXENV: release
+          TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
+          TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+        run: tox

codecov.yml

@@ -0,0 +1,8 @@
+comment: off
+
+coverage:
+    status:
+        project:
+            default:
+                target: auto
+                threshold: 5

tox.ini

@@ -1,6 +1,5 @@
 [tox]
-envlist = py37
-
+envlist = py36,py37,py38
 
 [testenv]
 extras = test,mosaic
@@ -9,16 +8,30 @@ commands=
 deps=
     numpy
 
-
-[testenv:black]
+# Release tooling
+[testenv:build]
 basepython = python3
 skip_install = true
 deps =
-    black
+    wheel
+    setuptools
 commands =
-    black
+    python setup.py sdist
 
+[testenv:release]
+setenv =
+    TWINE_USERNAME = {env:TWINE_USERNAME}
+    TWINE_PASSWORD = {env:TWINE_PASSWORD}
+basepython = python3
+skip_install = true
+deps =
+    {[testenv:build]deps}
+    twine >= 1.5.0
+commands =
+    {[testenv:build]commands}
+    twine upload --skip-existing dist/*
 
+# Linter configs
 [flake8]
 ignore = D203
 exclude = .git,__pycache__,docs/source/conf.py,old,build,dist