Added runserver validation to detect if DEBUG=False and ALLOWED_HOSTS is empty.

Refs #19875.

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/admin_scripts/tests.py b/tests/admin_scripts/tests.py
index 9e6b1f557b..df8a8becf6 100644
--- a/tests/admin_scripts/tests.py
+++ b/tests/admin_scripts/tests.py
@@ -1192,6 +1192,21 @@ class ManageRunserver(AdminScriptTestCase):
         self.cmd.handle(addrport="deadbeef:7654")
         self.assertServerSettings('deadbeef', '7654')
 
+class ManageRunserverEmptyAllowedHosts(AdminScriptTestCase):
+    def setUp(self):
+        self.write_settings('settings.py', sdict={
+            'ALLOWED_HOSTS': [],
+            'DEBUG': False,
+        })
+
+    def tearDown(self):
+        self.remove_settings('settings.py')
+
+    def test_empty_allowed_hosts_error(self):
+        out, err = self.run_manage(['runserver'])
+        self.assertNoOutput(out)
+        self.assertOutput(err, 'CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False.')
+
 
 ##########################################################################
 # COMMAND PROCESSING TESTS