Add pytest and mypy steps to the pre-commit hooks to avoid committing clearly broken code

.pre-commit-config.yaml

@@ -15,3 +15,17 @@ repos:
         args:
           - --fix=lf
       - id: trailing-whitespace
+  - repo: local
+    hooks:
+      - id: pytest
+        name: Check pytest unit tests pass
+        entry: pipenv run pytest
+        pass_filenames: false
+        language: system
+        types: [python]
+      - id: mypy
+        name: Check mypy static types match
+        entry: pipenv run mypy . --ignore-missing-imports
+        pass_filenames: false
+        language: system
+        types: [python]

lemonauth/migrations/0001_initial.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Generated by Django 1.11.6 on 2017-10-29 05:05
 from __future__ import unicode_literals
+from typing import List, Tuple
 
 from django.db import migrations, models
 
@@ -10,18 +11,20 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-    ]
+    ]  # type: List[Tuple[str, str]]
 
     operations = [
         migrations.CreateModel(
             name='IndieAuthCode',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('id', models.AutoField(auto_created=True,
+                                        primary_key=True, serialize=False, verbose_name='ID')),
                 ('code', models.CharField(max_length=64, unique=True)),
                 ('me', models.CharField(max_length=255)),
                 ('client_id', models.CharField(max_length=255)),
                 ('redirect_uri', models.CharField(max_length=255)),
-                ('response_type', models.CharField(choices=[('id', 'id'), ('code', 'code')], default='id', max_length=4)),
+                ('response_type', models.CharField(choices=[
+                 ('id', 'id'), ('code', 'code')], default='id', max_length=4)),
                 ('scope', models.CharField(blank=True, max_length=200)),
             ],
         ),