From d95b1ddcbef6ef61229080bab1c166d6ee4a161b Mon Sep 17 00:00:00 2001
From: Pavel Dedik <pavel.dedik@kiwi.com>
Date: Fri, 25 Oct 2019 14:39:33 +0200
Subject: [PATCH] Refs #30907 -- Added more tests for
 SplitArrayField.has_changed().

---
 tests/postgres_tests/test_array.py | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/tests/postgres_tests/test_array.py b/tests/postgres_tests/test_array.py
index 3f54110447..7686ea10a8 100644
--- a/tests/postgres_tests/test_array.py
+++ b/tests/postgres_tests/test_array.py
@@ -961,9 +961,19 @@ class TestSplitFormField(PostgreSQLSimpleTestCase):
                 model = IntegerArrayModel
                 fields = ('field',)
 
-        obj = IntegerArrayModel(field=[1, 2])
-        form = Form({'field_0': '1', 'field_1': '2'}, instance=obj)
-        self.assertFalse(form.has_changed())
+        tests = [
+            ({}, {'field_0': '', 'field_1': ''}, True),
+            ({'field': None}, {'field_0': '', 'field_1': ''}, True),
+            ({'field': [1]}, {'field_0': '', 'field_1': ''}, True),
+            ({'field': [1]}, {'field_0': '1', 'field_1': '0'}, True),
+            ({'field': [1, 2]}, {'field_0': '1', 'field_1': '2'}, False),
+            ({'field': [1, 2]}, {'field_0': 'a', 'field_1': 'b'}, True),
+        ]
+        for initial, data, expected_result in tests:
+            with self.subTest(initial=initial, data=data):
+                obj = IntegerArrayModel(**initial)
+                form = Form(data, instance=obj)
+                self.assertIs(form.has_changed(), expected_result)
 
 
 class TestSplitFormWidget(PostgreSQLWidgetTestCase):