Add github action to run mypy

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
 
     steps:
     - uses: actions/checkout@v2
@@ -24,6 +24,10 @@ jobs:
         python -m pip install --upgrade pip
         pip install -U setuptools
         pip install tox tox-gh-actions codecov
+    - name: Type checking
+      continue-on-error: true
+      run: |
+        tox -e mypy
     - name: Test with tox
       run: |
         tox

.pre-commit-config.yaml

@@ -23,3 +23,9 @@ repos:
     hooks:
     -   id: pyupgrade
         args: ["--py37-plus"]
+# TODO: Enable mypy checker when the checks succeed
+#-   repo: https://github.com/pre-commit/mirrors-mypy
+#    rev: v0.931
+#    hooks:
+#    -   id: mypy
+#        additional_dependencies: [types-setuptools]

pyproject.toml

@@ -12,7 +12,7 @@ line_length = 120
 multi_line_output = 3
 
 [tool.mypy]
-python_version = "3.6"
+python_version = "3.7"
 warn_return_any = true
 warn_unused_configs = true
 files = "pytest_bdd/**/*.py"

tox.ini

@@ -34,6 +34,12 @@ commands = {env:_PYTEST_CMD:pytest} {env:_PYTEST_MORE_ARGS:} {posargs:-vvl}
 deps = black==22.1.0
 commands = black --check --verbose setup.py docs pytest_bdd tests
 
+[testenv:mypy]
+deps =
+    mypy==0.931
+    types-setuptools
+commands = mypy
+
 [gh-actions]
 python =
     3.7: py37