Fixed #31402 -- Added migrate --check option.

Command exits with non-zero status if unapplied migrations exist.

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/migrations/test_commands.py b/tests/migrations/test_commands.py
index 14c09c8f98..f7f8a68d4c 100644
--- a/tests/migrations/test_commands.py
+++ b/tests/migrations/test_commands.py
@@ -249,6 +249,39 @@ class MigrateTests(MigrationTestBase):
         with self.assertRaisesMessage(CommandError, "Conflicting migrations detected"):
             call_command("migrate", "migrations")
 
+    @override_settings(MIGRATION_MODULES={
+        'migrations': 'migrations.test_migrations',
+    })
+    def test_migrate_check(self):
+        with self.assertRaises(SystemExit):
+            call_command('migrate', 'migrations', '0001', check_unapplied=True, verbosity=0)
+        self.assertTableNotExists('migrations_author')
+        self.assertTableNotExists('migrations_tribble')
+        self.assertTableNotExists('migrations_book')
+
+    @override_settings(MIGRATION_MODULES={
+        'migrations': 'migrations.test_migrations_plan',
+    })
+    def test_migrate_check_plan(self):
+        out = io.StringIO()
+        with self.assertRaises(SystemExit):
+            call_command(
+                'migrate',
+                'migrations',
+                '0001',
+                check_unapplied=True,
+                plan=True,
+                stdout=out,
+                no_color=True,
+            )
+        self.assertEqual(
+            'Planned operations:\n'
+            'migrations.0001_initial\n'
+            '    Create model Salamander\n'
+            '    Raw Python operation -> Grow salamander tail.\n',
+            out.getvalue(),
+        )
+
     @override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
     def test_showmigrations_list(self):
         """