Replace travis with GitHub action (rq#1290)

* CI: replace travis with GitHub action matrix

The GitHub action runs the same tests as travis however using a more
complex matrix:

Python versions: 3.5, 3.6, 3.7, 3.8
Python 3.4 is dropped by redis-py, therefore not required in the tests.

Redis versions: 3, 4, 5, 6
The different Redis versions offer different features and this allows
checks for compatibility.

redis-py versions: 3.5.0, 3.5.3
3.5.0 is the oldest supported version, 3.5.3 is the latest upstream
verison

Signed-off-by: Paul Spooren <[email protected]>

* CI: Add flake8 lint action

This actions runs `flake8` and shows style problems of the code. It uses
th GitHub default options which handle most problems as warnings. These
rules could become slowly more strict.

Signed-off-by: Paul Spooren <[email protected]>

.github/workflows/lint.yml

@@ -0,0 +1,32 @@
+name: Lint rq
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install flake8
+
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=5 --max-line-length=120 --statistics

.github/workflows/test.yml

@@ -0,0 +1,45 @@
+name: Test rq
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    name: Python${{ matrix.python-version }}/Redis${{ matrix.redis-version }}/redis-py${{ matrix.redis-py-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.5, 3.6, 3.7, 3.8]
+        redis-version: [3, 4, 5, 6]
+        redis-py-version: [3.5.0, 3.5.3]
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Start Redis
+      uses: supercharge/[email protected]
+      with:
+        redis-version: ${{ matrix.redis-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install redis==${{ matrix.redis-py-version }}
+        pip install pytest pytest-cov sentry-sdk codecov mock
+        pip install -e .
+
+    - name: Test with pytest
+      run: |
+        RUN_SLOW_TESTS_TOO=1 pytest --cov rq --durations=5
+
+    - name: Codecov
+      run: |
+        codecov

README.md

@@ -5,7 +5,7 @@ easily.
 
 RQ requires Redis >= 3.0.0.
 
-[![Build status](https://travis-ci.org/rq/rq.svg?branch=master)](https://secure.travis-ci.org/rq/rq)
+![Build status](https://github.com/rq/rq/workflows/Test%20rq/badge.svg)
 [![PyPI](https://img.shields.io/pypi/pyversions/rq.svg)](https://pypi.python.org/pypi/rq)
 [![Coverage](https://codecov.io/gh/rq/rq/branch/master/graph/badge.svg)](https://codecov.io/gh/rq/rq)