CI: basic GitHub actions

.flake8

@@ -0,0 +1,9 @@
+[flake8]
+# Increase from the default 79
+max-line-length = 500
+
+extend-ignore = E203, E266
+# E203 whitespace before ‘,’, ‘;’, or ‘:’
+# E266 too many leading ‘#’ for block comment
+
+max-complexity=18

.github/workflows/python-tests.yml

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+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
+
+name: Python lint and tests
+
+on:
+  push:
+  pull_request:
+    branches: ["dev"]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+        cache: 'pip' # caching pip dependencies
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+        python -m pip install flake8 pytest
+    - 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.
+        flake8 . --count --exit-zero --statistics
+    - name: Test with pytest
+      run: |
+        python -m pytest

.pre-commit-config.yaml

@@ -1,22 +1,15 @@
 repos:
-- repo: https://github.com/ambv/black
-  rev: 22.3.0
-  hooks:
-    - id: black
-      language_version: python3
-      args:
-        - '--line-length=120'
 - repo: https://github.com/pre-commit/pre-commit-hooks
   rev: v2.1.0
   hooks:
     - id: end-of-file-fixer
     - id: trailing-whitespace
+- repo: https://github.com/ambv/black
+  rev: 22.3.0
+  hooks:
+    - id: black
+      language_version: python3
 - repo: https://github.com/PyCQA/flake8
   rev: 3.7.8
   hooks:
     - id: flake8
-      args:
-        - '--max-line-length=500'
-        - '--ignore=E203,E266,E501,W503'
-        - '--max-complexity=18'
-        - '--select=B,C,E,F,W,T4,B9'

pyproject.toml

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+[project]
+name = "appdaemon"
+
+# Taken from: https://docs.pytest.org/en/7.1.x/explanation/goodpractices.html
+[tool.pytest.ini_options]
+addopts = [
+    "--import-mode=importlib",
+]
+
+# black configuration
+[tool.black]
+line-length = 120

tests/test_main.py

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+
+from appdaemon.__main__ import ADMain
+
+
+# TODO: fake test to assert that pytest works correctly
+def test_main():
+    main = ADMain()
+    assert main is not None