Add (failing) tests cases for makeing a column not null with a Django default value

tests/test_project/app_make_not_null_with_django_default/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+
+class AppMakeNotNullWithDjangoDefaultConfig(AppConfig):
+    name = "app_make_not_null_with_django_default"

tests/test_project/app_make_not_null_with_django_default/migrations/0001_initial.py

@@ -0,0 +1,28 @@
+# Generated by Django 2.2 on 2020-06-20 15:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name="A",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("col", models.CharField(max_length=10, null=True)),
+            ],
+        ),
+    ]

tests/test_project/app_make_not_null_with_django_default/migrations/0002_make_not_null_with_django_default.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2 on 2020-06-20 15:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("app_make_not_null_with_django_default", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="a",
+            name="col",
+            field=models.CharField(default="empty", max_length=10),
+        ),
+    ]

tests/test_project/app_make_not_null_with_django_default/models.py

@@ -0,0 +1,5 @@
+from django.db import models
+
+
+class A(models.Model):
+    col = models.CharField(max_length=10, null=False, default="empty")

tests/test_project/app_make_not_null_with_lib_default/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+
+class AppMakeNotNullWithLibDefaultConfig(AppConfig):
+    name = "app_make_not_null_with_lib_default"

tests/test_project/app_make_not_null_with_lib_default/migrations/0001_initial.py

@@ -0,0 +1,28 @@
+# Generated by Django 2.2 on 2020-06-20 15:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = []
+
+    operations = [
+        migrations.CreateModel(
+            name="A",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("col", models.CharField(max_length=10, null=True)),
+            ],
+        ),
+    ]

tests/test_project/app_make_not_null_with_lib_default/migrations/0002_make_not_null_with_lib_default.py

@@ -0,0 +1,21 @@
+# Generated by Django 2.2 on 2020-06-20 15:23
+
+from django.db import migrations, models
+
+from django_add_default_value import AddDefaultValue
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("app_make_not_null_with_lib_default", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="a",
+            name="col",
+            field=models.CharField(default="avalue", max_length=10),
+        ),
+        AddDefaultValue(model_name="a", name="col", value="avalue"),
+    ]

tests/test_project/app_make_not_null_with_lib_default/models.py

@@ -0,0 +1,5 @@
+from django.db import models
+
+
+class A(models.Model):
+    col = models.CharField(max_length=10, null=False, default="avalue")

tests/test_project/settings.py

@@ -54,6 +54,8 @@ INSTALLED_APPS = [
     "tests.test_project.app_rename_table",
     "tests.test_project.app_unique_together",
     "tests.test_project.app_data_migrations",
+    "tests.test_project.app_make_not_null_with_django_default",
+    "tests.test_project.app_make_not_null_with_lib_default",
 ]
 
 MIDDLEWARE = [