Fixed #34052 -- Made migrate --check don't emit signals and output when up to date.

2 files changed, 32 insertions, 0 deletions

diff --git a/tests/migrate_signals/tests.py b/tests/migrate_signals/tests.py
index f5b3cb506f..01b62dc3c0 100644
--- a/tests/migrate_signals/tests.py
+++ b/tests/migrate_signals/tests.py
@@ -156,3 +156,15 @@ class MigrateSignalTests(TransactionTestCase):
             ],
             ["migrate_signals.Signal"],
         )
+        # Migrating with an empty plan and --check doesn't emit signals.
+        pre_migrate_receiver = Receiver(signals.pre_migrate)
+        post_migrate_receiver = Receiver(signals.post_migrate)
+        management.call_command(
+            "migrate",
+            database=MIGRATE_DATABASE,
+            verbosity=MIGRATE_VERBOSITY,
+            interactive=MIGRATE_INTERACTIVE,
+            check_unapplied=True,
+        )
+        self.assertEqual(pre_migrate_receiver.call_counter, 0)
+        self.assertEqual(post_migrate_receiver.call_counter, 0)
diff --git a/tests/migrations/test_commands.py b/tests/migrations/test_commands.py
index 61a914f8ce..9900c7a35d 100644
--- a/tests/migrations/test_commands.py
+++ b/tests/migrations/test_commands.py
@@ -356,6 +356,26 @@ class MigrateTests(MigrationTestBase):
         self.assertTableNotExists("migrations_book")
 
     @override_settings(
+        INSTALLED_APPS=[
+            "migrations.migrations_test_apps.migrated_app",
+        ]
+    )
+    def test_migrate_check_migrated_app(self):
+        out = io.StringIO()
+        try:
+            call_command("migrate", "migrated_app", verbosity=0)
+            call_command(
+                "migrate",
+                "migrated_app",
+                stdout=out,
+                check_unapplied=True,
+            )
+            self.assertEqual(out.getvalue(), "")
+        finally:
+            # Unmigrate everything.
+            call_command("migrate", "migrated_app", "zero", verbosity=0)
+
+    @override_settings(
         MIGRATION_MODULES={
             "migrations": "migrations.test_migrations_plan",
         }