tests: reimport old tests + add linting setup

.flake8

@@ -1,3 +1,3 @@
 [flake8]
 max-line-length = 88
-extend-ignore = E203, E501
+extend-ignore = E203, E501

.github/workflows/ci.yml

@@ -0,0 +1,52 @@
+name: CI
+on:
+  push:
+    branches: [main]
+    tags:
+    - v*
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v3
+      with:
+        python-version: "3.10"
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install --upgrade poetry
+        poetry --version
+        poetry install --no-interaction
+
+    - name: Lint
+      run: poetry run pre-commit run --all-files
+
+  test:
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v3
+      with:
+        python-version: "3.10"
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install --upgrade poetry
+        poetry --version
+        poetry install --no-interaction
+
+    - name: Test
+      run: poetry run coverage run -m pytest
+
+    - name: Prepare coverage report
+      run: poetry run coverage xml
+
+    - name: Upload coverage reports
+      uses: codecov/codecov-action@v2

.gitignore

@@ -186,4 +186,4 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
-# End of https://www.toptal.com/developers/gitignore/api/python,macos
+# End of https://www.toptal.com/developers/gitignore/api/python,macos

.pre-commit-config.yaml

@@ -0,0 +1,41 @@
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.2.0
+  hooks:
+  - id: trailing-whitespace
+  - id: end-of-file-fixer
+  - id: mixed-line-ending
+  - id: check-json
+  - id: check-toml
+  - id: check-yaml
+  - id: check-merge-conflict
+  - id: debug-statements
+  - id: name-tests-test
+- repo: local
+  # run all of these hooks from the Poetry versions
+  hooks:
+  - id: isort
+    name: isort
+    entry: poetry run isort
+    language: system
+    types: [python]
+    require_serial: true
+  - id: black
+    name: black
+    entry: poetry run black
+    language: system
+    types: [python]
+    require_serial: true
+  - id: flake8
+    name: flake8
+    entry: poetry run flake8
+    language: system
+    types: [python]
+    require_serial: true
+  - id: mypy
+    name: mypy
+    entry: poetry run mypy
+    args: ["--scripts-are-modules"]
+    language: system
+    types: [python]
+    require_serial: true