Fixed #23765 -- Removed BooleanField default check which often yielded false positives.

django/core/checks/__init__.py

@@ -7,7 +7,6 @@ from .messages import (CheckMessage,
 from .registry import register, run_checks, tag_exists, Tags
 
 # Import these to force registration of checks
-import django.core.checks.compatibility.django_1_6_0  # NOQA
 import django.core.checks.compatibility.django_1_7_0  # NOQA
 import django.core.checks.model_checks  # NOQA
 import django.core.checks.security.base  # NOQA

django/core/checks/compatibility/django_1_6_0.py

@@ -1,41 +0,0 @@
-# -*- encoding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.apps import apps
-
-from .. import Warning, register, Tags
-
-
-@register(Tags.compatibility)
-def check_1_6_compatibility(**kwargs):
-    errors = []
-    errors.extend(_check_boolean_field_default_value(**kwargs))
-    return errors
-
-
-def _check_boolean_field_default_value(app_configs=None, **kwargs):
-    """
-    Checks if there are any BooleanFields without a default value, &
-    warns the user that the default has changed from False to None.
-    """
-    from django.db import models
-
-    problem_fields = [
-        field
-        for model in apps.get_models(**kwargs)
-        if app_configs is None or model._meta.app_config in app_configs
-        for field in model._meta.local_fields
-        if isinstance(field, models.BooleanField) and not field.has_default()
-    ]
-
-    return [
-        Warning(
-            "BooleanField does not have a default value.",
-            hint=("Django 1.6 changed the default value of BooleanField from False to None. "
-                  "See https://docs.djangoproject.com/en/1.6/ref/models/fields/#booleanfield "
-                  "for more information."),
-            obj=field,
-            id='1_6.W002',
-        )
-        for field in problem_fields
-    ]

docs/ref/checks.txt

@@ -168,7 +168,8 @@ that might occur as a result of a version upgrade.
 
 * **1_6.W001**: Some project unit tests may not execute as expected. *This
   check was removed in Django 1.8 due to false positives*.
-* **1_6.W002**: ``BooleanField`` does not have a default value.
+* **1_6.W002**: ``BooleanField`` does not have a default value. *This
+  check was removed in Django 1.8 due to false positives*.
 * **1_7.W001**:  Django 1.7 changed the global defaults for the
   ``MIDDLEWARE_CLASSES.``
   ``django.contrib.sessions.middleware.SessionMiddleware``,

tests/check_framework/models.py

@@ -7,8 +7,3 @@ from django.db import models
 class SimpleModel(models.Model):
     field = models.IntegerField()
     manager = models.manager.Manager()
-
-
-class Book(models.Model):
-    title = models.CharField(max_length=250)
-    is_published = models.BooleanField(default=False)

tests/check_framework/tests.py

@@ -10,17 +10,15 @@ from django.core import checks
 from django.core.checks import Error, Warning
 from django.core.checks.model_checks import check_all_models
 from django.core.checks.registry import CheckRegistry
-from django.core.checks.compatibility.django_1_6_0 import check_1_6_compatibility
 from django.core.checks.compatibility.django_1_7_0 import check_1_7_compatibility
 from django.core.management.base import CommandError
 from django.core.management import call_command
 from django.db import models
-from django.db.models.fields import NOT_PROVIDED
 from django.test import TestCase
 from django.test.utils import override_settings, override_system_checks
 from django.utils.encoding import force_text
 
-from .models import SimpleModel, Book
+from .models import SimpleModel
 
 
 class DummyObj(object):
@@ -114,32 +112,6 @@ class MessageTests(TestCase):
         self.assertEqual(force_text(e), expected)
 
 
-class Django_1_6_0_CompatibilityChecks(TestCase):
-
-    @override_settings(TEST_RUNNER='myapp.test.CustomRunner')
-    def test_boolean_field_default_value(self):
-        # We patch the field's default value to trigger the warning
-        boolean_field = Book._meta.get_field('is_published')
-        old_default = boolean_field.default
-        try:
-            boolean_field.default = NOT_PROVIDED
-            errors = check_1_6_compatibility()
-            expected = [
-                checks.Warning(
-                    'BooleanField does not have a default value.',
-                    hint=('Django 1.6 changed the default value of BooleanField from False to None. '
-                          'See https://docs.djangoproject.com/en/1.6/ref/models/fields/#booleanfield '
-                          'for more information.'),
-                    obj=boolean_field,
-                    id='1_6.W002',
-                )
-            ]
-            self.assertEqual(errors, expected)
-        finally:
-            # Restore the ``default``
-            boolean_field.default = old_default
-
-
 class Django_1_7_0_CompatibilityChecks(TestCase):
 
     @override_settings(MIDDLEWARE_CLASSES=('django.contrib.sessions.middleware.SessionMiddleware',))