Replaced travis with GH Actions

.github/workflows/tests.yml

@@ -0,0 +1,30 @@
+name: Tox tests
+
+on:
+  push:
+    branches:
+      - '*.*'
+  pull_request:
+    branches:
+      - '*.*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 5
+      matrix:
+        python-version: [3.6, 3.7, 3.8, 3.9]
+
+    steps:
+    - uses: actions/checkout@v1
+    - 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
+        pip install tox tox-gh-actions
+    - name: Test with tox
+      run: tox

.travis.yml

@@ -1,29 +0,0 @@
-language: python
-cache:
-  directories:
-    - .tox/
-    - $HOME/.cache/pip
-matrix:
-  include:
-    - python: "3.6"
-      env: TOX_ENV=py36
-      name: 3.6 tests
-    - python: "3.7"
-      env: TOX_ENV=py37
-      name: 3.7 tests
-    - python: "3.8"
-      env: TOX_ENV=py38
-      name: 3.8 tests
-# 3.9 is commented as travis doesn't have it as of October 2020
-#    - python: "3.9"
-#      env: TOX_ENV=py39
-#      name: 3.9 tests
-    - python: "3.8"
-      env: TOX_ENV=black,flake8,mypy
-      name: Linting
-
-install:
-  - pip uninstall -y virtualenv
-  - pip install tox
-script:
-  - tox -r -e $TOX_ENV

tox.ini

@@ -5,6 +5,13 @@ extend-ignore = E501  # line length handled by black.
 envlist = py36, py37, py38, py39, flake8, mypy, black
 skip_missing_interpreters = True
 
+[gh-actions]
+python =
+    3.6: py36
+    3.7: py37
+    3.8: py38, mypy, flake8, black
+    3.9: py39, mypy, flake8, black
+
 [testenv]
 deps =
     pytest