Merge branch 'django' into django+add-logs-api.

15 files changed, 216 insertions, 90 deletions

diff --git a/api/admin.py b/api/admin.py
index af2cfbeb..bcd41a7e 100644
--- a/api/admin.py
+++ b/api/admin.py
@@ -2,17 +2,16 @@ from django.contrib import admin
 
 from .models import (
     DeletedMessage, DocumentationLink,
-    Member, MessageDeletionContext,
+    MessageDeletionContext,
     OffTopicChannelName, Role,
     SnakeFact, SnakeIdiom,
     SnakeName, SpecialSnake,
-    Tag
+    Tag, User
 )
 
 
 admin.site.register(DeletedMessage)
 admin.site.register(DocumentationLink)
-admin.site.register(Member)
 admin.site.register(MessageDeletionContext)
 admin.site.register(OffTopicChannelName)
 admin.site.register(Role)
@@ -21,3 +20,4 @@ admin.site.register(SnakeIdiom)
 admin.site.register(SnakeName)
 admin.site.register(SpecialSnake)
 admin.site.register(Tag)
+admin.site.register(User)
diff --git a/api/migrations/0018_messagedeletioncontext.py b/api/migrations/0018_messagedeletioncontext.py
index 39a4fb87..88cbab28 100644
--- a/api/migrations/0018_messagedeletioncontext.py
+++ b/api/migrations/0018_messagedeletioncontext.py
@@ -17,7 +17,7 @@ class Migration(migrations.Migration):
             fields=[
                 ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                 ('creation', models.DateTimeField(help_text='When this deletion took place.')),
-                ('actor', models.ForeignKey(help_text='The original actor causing this deletion. Could be the author of a manual clean command invocation, the bot when executing automatic actions, or nothing to indicate that the bulk deletion was not issued by us.', null=True, on_delete=django.db.models.deletion.CASCADE, to='api.Member')),
+                ('actor', models.ForeignKey(help_text='The original actor causing this deletion. Could be the author of a manual clean command invocation, the bot when executing automatic actions, or nothing to indicate that the bulk deletion was not issued by us.', null=True, on_delete=django.db.models.deletion.CASCADE, to='api.User')),
             ],
             bases=(api.models.ModelReprMixin, models.Model),
         ),
diff --git a/api/migrations/0018_user_rename.py b/api/migrations/0018_user_rename.py
new file mode 100644
index 00000000..f88eb5bc
--- /dev/null
+++ b/api/migrations/0018_user_rename.py
@@ -0,0 +1,17 @@
+# Generated by Django 2.1.3 on 2018-11-19 20:09
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0017_auto_20181029_1921'),
+    ]
+
+    operations = [
+        migrations.RenameModel(
+            old_name='Member',
+            new_name='User',
+        ),
+    ]
diff --git a/api/migrations/0019_deletedmessage.py b/api/migrations/0019_deletedmessage.py
index b119c3ef..fbd94949 100644
--- a/api/migrations/0019_deletedmessage.py
+++ b/api/migrations/0019_deletedmessage.py
@@ -23,7 +23,7 @@ class Migration(migrations.Migration):
                 ('channel_id', models.BigIntegerField(help_text='The channel ID that this message was sent in, taken from Discord.', validators=[django.core.validators.MinValueValidator(limit_value=0, message='Channel IDs cannot be negative.')])),
                 ('content', models.CharField(help_text='The content of this message, taken from Discord.', max_length=2000)),
                 ('embeds', django.contrib.postgres.fields.ArrayField(base_field=django.contrib.postgres.fields.jsonb.JSONField(validators=[api.validators.validate_tag_embed]), help_text='Embeds attached to this message.', size=None)),
-                ('author', models.ForeignKey(help_text='The author of this message.', on_delete=django.db.models.deletion.CASCADE, to='api.Member')),
+                ('author', models.ForeignKey(help_text='The author of this message.', on_delete=django.db.models.deletion.CASCADE, to='api.User')),
                 ('deletion_context', models.ForeignKey(help_text='The deletion context this message is part of.', on_delete=django.db.models.deletion.CASCADE, to='api.MessageDeletionContext')),
             ],
             options={
diff --git a/api/migrations/0019_user_in_guild.py b/api/migrations/0019_user_in_guild.py
new file mode 100644
index 00000000..fda008c4
--- /dev/null
+++ b/api/migrations/0019_user_in_guild.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.1.3 on 2018-11-19 20:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0018_user_rename'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='in_guild',
+            field=models.BooleanField(default=True, help_text='Whether this user is in our server.'),
+        ),
+    ]
diff --git a/api/migrations/0020_add_snake_field_validators.py b/api/migrations/0020_add_snake_field_validators.py
new file mode 100644
index 00000000..3b625f9b
--- /dev/null
+++ b/api/migrations/0020_add_snake_field_validators.py
@@ -0,0 +1,24 @@
+# Generated by Django 2.1.2 on 2018-11-24 17:11
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0019_user_in_guild'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='snakename',
+            name='name',
+            field=models.CharField(help_text="The regular name for this snake, e.g. 'Python'.", max_length=100, primary_key=True, serialize=False, validators=[django.core.validators.RegexValidator(regex='^([^0-9])+$')]),
+        ),
+        migrations.AlterField(
+            model_name='snakename',
+            name='scientific',
+            field=models.CharField(help_text="The scientific name for this snake, e.g. 'Python bivittatus'.", max_length=150, validators=[django.core.validators.RegexValidator(regex='^([^0-9])+$')]),
+        ),
+    ]
diff --git a/api/migrations/0021_merge_20181125_1015.py b/api/migrations/0021_merge_20181125_1015.py
new file mode 100644
index 00000000..d8eaa510
--- /dev/null
+++ b/api/migrations/0021_merge_20181125_1015.py
@@ -0,0 +1,14 @@
+# Generated by Django 2.1.1 on 2018-11-25 10:15
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0020_add_snake_field_validators'),
+        ('api', '0019_deletedmessage'),
+    ]
+
+    operations = [
+    ]
diff --git a/api/models.py b/api/models.py
index ded9ebeb..68833328 100644
--- a/api/models.py
+++ b/api/models.py
@@ -92,11 +92,13 @@ class SnakeName(ModelReprMixin, models.Model):
     name = models.CharField(
         primary_key=True,
         max_length=100,
-        help_text="The regular name for this snake, e.g. 'Python'."
+        help_text="The regular name for this snake, e.g. 'Python'.",
+        validators=[RegexValidator(regex=r'^([^0-9])+$')]
     )
     scientific = models.CharField(
         max_length=150,
-        help_text="The scientific name for this snake, e.g. 'Python bivittatus'."
+        help_text="The scientific name for this snake, e.g. 'Python bivittatus'.",
+        validators=[RegexValidator(regex=r'^([^0-9])+$')]
     )
 
     def __str__(self):
@@ -167,8 +169,8 @@ class Role(ModelReprMixin, models.Model):
         return self.name
 
 
-class Member(ModelReprMixin, models.Model):
-    """A member of our Discord server."""
+class User(ModelReprMixin, models.Model):
+    """A Discord user."""
 
     id = models.BigIntegerField(  # noqa
         primary_key=True,
@@ -205,6 +207,10 @@ class Member(ModelReprMixin, models.Model):
         Role,
         help_text="Any roles this user has on our server."
     )
+    in_guild = models.BooleanField(
+        default=True,
+        help_text="Whether this user is in our server."
+    )
 
     def __str__(self):
         return f"{self.name}#{self.discriminator}"
@@ -222,7 +228,7 @@ class Message(ModelReprMixin, models.Model):
         )
     )
     author = models.ForeignKey(
-        Member,
+        User,
         on_delete=models.CASCADE,
         help_text="The author of this message."
     )
@@ -255,7 +261,7 @@ class Message(ModelReprMixin, models.Model):
 
 class MessageDeletionContext(ModelReprMixin, models.Model):
     actor = models.ForeignKey(
-        Member,
+        User,
         on_delete=models.CASCADE,
         help_text=(
             "The original actor causing this deletion. Could be the author "
diff --git a/api/serializers.py b/api/serializers.py
index e39cd4a3..8091ac63 100644
--- a/api/serializers.py
+++ b/api/serializers.py
@@ -3,11 +3,11 @@ from rest_framework_bulk import BulkSerializerMixin
 
 from .models import (
     DeletedMessage, DocumentationLink,
-    Member, MessageDeletionContext,
-    OffTopicChannelName, Role,
-    SnakeFact, SnakeIdiom,
-    SnakeName, SpecialSnake,
-    Tag
+    MessageDeletionContext, OffTopicChannelName,
+    Role, SnakeFact,
+    SnakeIdiom, SnakeName,
+    SpecialSnake, Tag,
+    User
 )
 
 
@@ -74,10 +74,10 @@ class TagSerializer(ModelSerializer):
         fields = ('title', 'embed')
 
 
-class MemberSerializer(BulkSerializerMixin, ModelSerializer):
-    roles = PrimaryKeyRelatedField(many=True, queryset=Role.objects.all())
+class UserSerializer(BulkSerializerMixin, ModelSerializer):
+    roles = PrimaryKeyRelatedField(many=True, queryset=Role.objects.all(), required=False)
 
     class Meta:
-        model = Member
-        fields = ('id', 'avatar_hash', 'name', 'discriminator', 'roles')
+        model = User
+        fields = ('id', 'avatar_hash', 'name', 'discriminator', 'roles', 'in_guild')
         depth = 1
diff --git a/api/tests/test_models.py b/api/tests/test_models.py
index 8d41c23e..968f003e 100644
--- a/api/tests/test_models.py
+++ b/api/tests/test_models.py
@@ -4,12 +4,12 @@ from django.test import SimpleTestCase
 
 from ..models import (
     DeletedMessage, DocumentationLink,
-    Member, Message,
-    MessageDeletionContext, ModelReprMixin,
-    OffTopicChannelName, Role,
-    SnakeFact, SnakeIdiom,
-    SnakeName, SpecialSnake,
-    Tag
+    Message, MessageDeletionContext,
+    ModelReprMixin, OffTopicChannelName,
+    Role, SnakeFact,
+    SnakeIdiom, SnakeName,
+    SpecialSnake, Tag,
+    User
 )
 
 
@@ -32,14 +32,14 @@ class StringDunderMethodTests(SimpleTestCase):
         self.objects = (
             DeletedMessage(
                 id=45,
-                author=Member(
+                author=User(
                     id=444, name='bill',
                     discriminator=5, avatar_hash=None
                 ),
                 channel_id=666,
                 content="wooey",
                 deletion_context=MessageDeletionContext(
-                    actor=Member(
+                    actor=User(
                         id=5555, name='shawn',
                         discriminator=555, avatar_hash=None
                     ),
@@ -64,7 +64,7 @@ class StringDunderMethodTests(SimpleTestCase):
             ),
             Message(
                 id=45,
-                author=Member(
+                author=User(
                     id=444, name='bill',
                     discriminator=5, avatar_hash=None
                 ),
@@ -73,13 +73,13 @@ class StringDunderMethodTests(SimpleTestCase):
                 embeds=[]
             ),
             MessageDeletionContext(
-                actor=Member(
+                actor=User(
                     id=5555, name='shawn',
                     discriminator=555, avatar_hash=None
                 ),
                 creation=datetime.utcnow()
             ),
-            Member(
+            User(
                 id=5, name='bob',
                 discriminator=1, avatar_hash=None
             ),
diff --git a/api/tests/test_members.py b/api/tests/test_users.py
index 47466b62..8dadcbdb 100644
--- a/api/tests/test_members.py
+++ b/api/tests/test_users.py
@@ -1,7 +1,7 @@
 from django_hosts.resolvers import reverse
 
 from .base import APISubdomainTestCase
-from ..models import Member, Role
+from ..models import Role, User
 
 
 class UnauthedDocumentationLinkAPITests(APISubdomainTestCase):
@@ -10,25 +10,25 @@ class UnauthedDocumentationLinkAPITests(APISubdomainTestCase):
         self.client.force_authenticate(user=None)
 
     def test_detail_lookup_returns_401(self):
-        url = reverse('bot:member-detail', args=('whatever',), host='api')
+        url = reverse('bot:user-detail', args=('whatever',), host='api')
         response = self.client.get(url)
 
         self.assertEqual(response.status_code, 401)
 
     def test_list_returns_401(self):
-        url = reverse('bot:member-list', host='api')
+        url = reverse('bot:user-list', host='api')
         response = self.client.get(url)
 
         self.assertEqual(response.status_code, 401)
 
     def test_create_returns_401(self):
-        url = reverse('bot:member-list', host='api')
+        url = reverse('bot:user-list', host='api')
         response = self.client.post(url, data={'hi': 'there'})
 
         self.assertEqual(response.status_code, 401)
 
     def test_delete_returns_401(self):
-        url = reverse('bot:member-detail', args=('whatever',), host='api')
+        url = reverse('bot:user-detail', args=('whatever',), host='api')
         response = self.client.delete(url)
 
         self.assertEqual(response.status_code, 401)
@@ -45,7 +45,7 @@ class CreationTests(APISubdomainTestCase):
         )
 
     def test_accepts_valid_data(self):
-        url = reverse('bot:member-list', host='api')
+        url = reverse('bot:user-list', host='api')
         data = {
             'id': 42,
             'avatar_hash': "validavatarhashiswear",
@@ -53,20 +53,22 @@ class CreationTests(APISubdomainTestCase):
             'discriminator': 42,
             'roles': [
                 self.role.id
-            ]
+            ],
+            'in_guild': True
         }
 
         response = self.client.post(url, data=data)
         self.assertEqual(response.status_code, 201)
         self.assertEqual(response.json(), data)
 
-        user = Member.objects.get(id=42)
+        user = User.objects.get(id=42)
         self.assertEqual(user.avatar_hash, data['avatar_hash'])
         self.assertEqual(user.name, data['name'])
         self.assertEqual(user.discriminator, data['discriminator'])
+        self.assertEqual(user.in_guild, data['in_guild'])
 
     def test_supports_multi_creation(self):
-        url = reverse('bot:member-list', host='api')
+        url = reverse('bot:user-list', host='api')
         data = [
             {
                 'id': 5,
@@ -75,14 +77,16 @@ class CreationTests(APISubdomainTestCase):
                 'discriminator': 42,
                 'roles': [
                     self.role.id
-                ]
+                ],
+                'in_guild': True
             },
             {
                 'id': 8,
                 'avatar_hash': "maybenot",
                 'name': "another test man",
                 'discriminator': 555,
-                'roles': []
+                'roles': [],
+                'in_guild': False
             }
         ]
 
@@ -91,7 +95,7 @@ class CreationTests(APISubdomainTestCase):
         self.assertEqual(response.json(), data)
 
     def test_returns_400_for_unknown_role_id(self):
-        url = reverse('bot:member-list', host='api')
+        url = reverse('bot:user-list', host='api')
         data = {
             'id': 5,
             'avatar_hash': "hahayes",
@@ -106,7 +110,7 @@ class CreationTests(APISubdomainTestCase):
         self.assertEqual(response.status_code, 400)
 
     def test_returns_400_for_bad_data(self):
-        url = reverse('bot:member-list', host='api')
+        url = reverse('bot:user-list', host='api')
         data = {
             'id': True,
             'avatar_hash': 1902831,
diff --git a/api/urls.py b/api/urls.py
index 2bca5689..dca208d8 100644
--- a/api/urls.py
+++ b/api/urls.py
@@ -4,10 +4,10 @@ from rest_framework.routers import DefaultRouter
 from .views import HealthcheckView
 from .viewsets import (
     DeletedMessageViewSet, DocumentationLinkViewSet,
-    MemberViewSet, OffTopicChannelNameViewSet,
-    RoleViewSet, SnakeFactViewSet,
-    SnakeIdiomViewSet, SnakeNameViewSet,
-    SpecialSnakeViewSet, TagViewSet
+    OffTopicChannelNameViewSet, RoleViewSet,
+    SnakeFactViewSet, SnakeIdiomViewSet,
+    SnakeNameViewSet, SpecialSnakeViewSet,
+    TagViewSet, UserViewSet
 )
 
 
@@ -27,8 +27,8 @@ bot_router.register(
     base_name='offtopicchannelname'
 )
 bot_router.register(
-    'members',
-    MemberViewSet
+    'users',
+    UserViewSet
 )
 bot_router.register(
     'roles',
diff --git a/api/viewsets.py b/api/viewsets.py
index 8dca5b2a..e406e8c3 100644
--- a/api/viewsets.py
+++ b/api/viewsets.py
@@ -10,18 +10,18 @@ from rest_framework.viewsets import GenericViewSet, ModelViewSet, ViewSet
 from rest_framework_bulk import BulkCreateModelMixin
 
 from .models import (
-    DocumentationLink, Member,
-    MessageDeletionContext, OffTopicChannelName,
-    Role, SnakeFact,
-    SnakeIdiom, SnakeName,
-    SpecialSnake, Tag
+    DocumentationLink, MessageDeletionContext,
+    OffTopicChannelName, Role,
+    SnakeFact, SnakeIdiom,
+    SnakeName, SpecialSnake,
+    Tag, User
 )
 from .serializers import (
-    DocumentationLinkSerializer, MemberSerializer,
-    MessageDeletionContextSerializer, OffTopicChannelNameSerializer,
-    RoleSerializer, SnakeFactSerializer,
-    SnakeIdiomSerializer, SnakeNameSerializer,
-    SpecialSnakeSerializer, TagSerializer
+    DocumentationLinkSerializer, MessageDeletionContextSerializer,
+    OffTopicChannelNameSerializer, RoleSerializer,
+    SnakeFactSerializer, SnakeIdiomSerializer,
+    SnakeNameSerializer, SpecialSnakeSerializer,
+    TagSerializer, UserSerializer
 )
 
 
@@ -539,13 +539,13 @@ class TagViewSet(ModelViewSet):
     queryset = Tag.objects.all()
 
 
-class MemberViewSet(BulkCreateModelMixin, ModelViewSet):
+class UserViewSet(BulkCreateModelMixin, ModelViewSet):
     """
-    View providing CRUD operations on our Discord server's members through the bot.
+    View providing CRUD operations on Discord users through the bot.
 
     ## Routes
-    ### GET /bot/members
-    Returns all members currently known.
+    ### GET /bot/users
+    Returns all users currently known.
 
     #### Response format
     >>> [
@@ -559,15 +559,16 @@ class MemberViewSet(BulkCreateModelMixin, ModelViewSet):
     ...             270988689419665409,
     ...             277546923144249364,
     ...             458226699344019457
-    ...         ]
+    ...         ],
+    ...         'in_guild': True
     ...     }
     ... ]
 
     #### Status codes
     - 200: returned on success
 
-    ### GET /bot/members/<snowflake:int>
-    Gets a single member by ID.
+    ### GET /bot/users/<snowflake:int>
+    Gets a single user by ID.
 
     #### Response format
     >>> {
@@ -580,16 +581,17 @@ class MemberViewSet(BulkCreateModelMixin, ModelViewSet):
     ...         270988689419665409,
     ...         277546923144249364,
     ...         458226699344019457
-    ...     ]
+    ...     ],
+    ...     'in_guild': True
     ... }
 
     #### Status codes
     - 200: returned on success
-    - 404: if a member with the given `snowflake` could not be found
+    - 404: if a user with the given `snowflake` could not be found
 
-    ### POST /bot/members
-    Adds a single or multiple new members.
-    The roles attached to the member(s) must be roles known by the site.
+    ### POST /bot/users
+    Adds a single or multiple new users.
+    The roles attached to the user(s) must be roles known by the site.
 
     #### Request body
     >>> {
@@ -597,18 +599,19 @@ class MemberViewSet(BulkCreateModelMixin, ModelViewSet):
     ...     'avatar': str,
     ...     'name': str,
     ...     'discriminator': int,
-    ...     'roles': List[int]
+    ...     'roles': List[int],
+    ...     'in_guild': bool
     ... }
 
-    Alternatively, request members can be POSTed as a list of above objects,
-    in which case multiple members will be created at once.
+    Alternatively, request users can be POSTed as a list of above objects,
+    in which case multiple users will be created at once.
 
     #### Status codes
     - 201: returned on success
     - 400: if one of the given roles does not exist, or one of the given fields is invalid
 
-    ### PUT /bot/members/<snowflake:int>
-    Update the member with the given `snowflake`.
+    ### PUT /bot/users/<snowflake:int>
+    Update the user with the given `snowflake`.
     All fields in the request body are required.
 
     #### Request body
@@ -617,16 +620,17 @@ class MemberViewSet(BulkCreateModelMixin, ModelViewSet):
     ...     'avatar': str,
     ...     'name': str,
     ...     'discriminator': int,
-    ...     'roles': List[int]
+    ...     'roles': List[int],
+    ...     'in_guild': bool
     ... }
 
     #### Status codes
     - 200: returned on success
     - 400: if the request body was invalid, see response body for details
-    - 404: if the member with the given `snowflake` could not be found
+    - 404: if the user with the given `snowflake` could not be found
 
-    ### PATCH /bot/members/<snowflake:int>
-    Update the member with the given `snowflake`.
+    ### PATCH /bot/users/<snowflake:int>
+    Update the user with the given `snowflake`.
     All fields in the request body are optional.
 
     #### Request body
@@ -635,21 +639,22 @@ class MemberViewSet(BulkCreateModelMixin, ModelViewSet):
     ...     'avatar': str,
     ...     'name': str,
     ...     'discriminator': int,
-    ...     'roles': List[int]
+    ...     'roles': List[int],
+    ...     'in_guild': bool
     ... }
 
     #### Status codes
     - 200: returned on success
     - 400: if the request body was invalid, see response body for details
-    - 404: if the member with the given `snowflake` could not be found
+    - 404: if the user with the given `snowflake` could not be found
 
-    ### DELETE /bot/members/<snowflake:int>
-    Deletes the member with the given `snowflake`.
+    ### DELETE /bot/users/<snowflake:int>
+    Deletes the user with the given `snowflake`.
 
     #### Status codes
     - 204: returned on success
-    - 404: if a member with the given `snowflake` does not exist
+    - 404: if a user with the given `snowflake` does not exist
     """
 
-    serializer_class = MemberSerializer
-    queryset = Member.objects.all()
+    serializer_class = UserSerializer
+    queryset = User.objects.all()
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 90232430..1c6a746a 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -55,6 +55,9 @@ jobs:
 
   - job: test
     displayName: Test
+    dependsOn:
+      - lint_misc
+      - lint_python
     pool:
       vmImage: ubuntu-16.04
     strategy:
@@ -112,5 +115,25 @@ jobs:
           testResultsFiles: "**/TEST-*.xml"
           testRunTitle: 'Python $(python.version) with PostgreSQL $(postgres.version)'
 
+  - job: push_image
+    displayName: Push Docker image
+    dependsOn: test
+    condition: and(succeeded(), eq(variables['build.sourceBranch'], 'refs/heads/django'))
+    pool:
+      vmImage: ubuntu-16.04
+
+    steps:
+      - task: Docker@1
+        displayName: Login to Docker Hub
+
+        inputs:
+          containerregistrytype: 'Container Registry'
+          dockerRegistryEndpoint: 'DockerHub'
+          command: 'login'
+
+      - script: |
+          docker build -t pythondiscord/django:latest .
+          docker push pythondiscord/django:latest
+        displayName: Build and push the image
 
 # vim: sw=2 ts=2:
diff --git a/pysite/settings.py b/pysite/settings.py
index 5badde5c..c3373250 100644
--- a/pysite/settings.py
+++ b/pysite/settings.py
@@ -11,7 +11,7 @@ https://docs.djangoproject.com/en/2.1/ref/settings/
 """
 
 import os
-# import sys
+import sys
 
 import environ
 
@@ -207,7 +207,22 @@ LOGGING = {
         'django': {
             'handlers': ['console'],
             'propagate': True,
-            'level': 'INFO' if DEBUG else env('LOG_LEVEL', default='WARN')
+            'level': env(
+                'LOG_LEVEL',
+                default=(
+                    # If there is no explicit `LOG_LEVEL` set,
+                    # use `DEBUG` if we're running in debug mode but not
+                    # testing. Use `ERROR` if we're running tests, else
+                    # default to using `WARN`.
+                    'DEBUG'
+                    if DEBUG and 'test' not in sys.argv
+                    else (
+                        'ERROR'
+                        if 'test' in sys.argv
+                        else 'WARN'
+                    )
+                )
+            )
         }
     }
 }