add testcase: drop table

tests/fixtures.py

@@ -15,6 +15,7 @@
 CREATE_TABLE_WITH_NOT_NULL_COLUMN = "app_create_table_with_not_null_column"
 ADD_NOT_NULL_COLUMN = "app_add_not_null_column"
 DROP_COLUMN = "app_drop_column"
+DROP_TABLE = "app_drop_table"
 RENAME_COLUMN = "app_rename_column"
 RENAME_TABLE = "app_rename_table"
 IGNORE_MIGRATION = "app_ignore_migration"

tests/functional/test_migration_linter.py

@@ -61,6 +61,10 @@ class BaseBackwardCompatibilityDetection(object):
         app = fixtures.DROP_COLUMN
         self._test_linter_finds_errors(app)
 
+    def test_detect_drop_table(self):
+        app = fixtures.DROP_TABLE
+        self._test_linter_finds_errors(app)
+
     def test_detect_rename_column(self):
         app = fixtures.RENAME_COLUMN
         self._test_linter_finds_errors(app)

tests/test_project/app_drop_table/apps.py

@@ -0,0 +1,8 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.apps import AppConfig
+
+
+class AppDropTableConfig(AppConfig):
+    name = "tests.test_project.app_drop_table"

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

@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.18 on 2019-04-14 14:59
+from __future__ import unicode_literals
+
+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",
+                    ),
+                ),
+                ("field_a", models.IntegerField()),
+            ],
+        )
+    ]

tests/test_project/app_drop_table/migrations/0002_delete_a.py

@@ -0,0 +1,16 @@
+# Generated by Django 2.1.10 on 2019-07-19 09:50
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('app_drop_table', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.DeleteModel(
+            name='A',
+        ),
+    ]

tests/test_project/app_drop_table/models.py

@@ -0,0 +1,8 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models
+
+
+# class A(models.Model):
+#    field_a = models.IntegerField()

tests/test_project/settings.py

@@ -47,6 +47,7 @@ INSTALLED_APPS = [
     "tests.test_project.app_correct",
     "tests.test_project.app_create_table_with_not_null_column",
     "tests.test_project.app_drop_column",
+    "tests.test_project.app_drop_table",
     "tests.test_project.app_ignore_migration",
     "tests.test_project.app_rename_column",
     "tests.test_project.app_rename_table",