From f00e9a9f16a9f653d42cb960f882edba85f5329f Mon Sep 17 00:00:00 2001
From: Mathieu Pellerin <nirvn.asia@gmail.com>
Date: Sat, 6 Jul 2024 12:42:37 +0700
Subject: [PATCH] Add test coverage

---
 tests/src/gui/testqgsattributeform.cpp | 33 ++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/tests/src/gui/testqgsattributeform.cpp b/tests/src/gui/testqgsattributeform.cpp
index 82bea31db6b19..4ace795bb626e 100644
--- a/tests/src/gui/testqgsattributeform.cpp
+++ b/tests/src/gui/testqgsattributeform.cpp
@@ -58,6 +58,7 @@ class TestQgsAttributeForm : public QObject
     void testAttributeFormInterface();
     void testDefaultValueUpdate();
     void testDefaultValueUpdateRecursion();
+    void testParentFeatureUpdate();
     void testSameFieldSync();
     void testZeroDoubles();
     void testMinimumWidth();
@@ -1111,6 +1112,38 @@ void TestQgsAttributeForm::testDefaultValueUpdateRecursion()
   QCOMPARE( ww3->value().toInt(), 43 );
 }
 
+void TestQgsAttributeForm::testParentFeatureUpdate()
+{
+  // make a temporary layer to check through
+  const QString def = QStringLiteral( "Point?field=col0:integer" );
+  QgsVectorLayer *layer = new QgsVectorLayer( def, QStringLiteral( "test" ), QStringLiteral( "memory" ) );
+  layer->setDefaultValueDefinition( 0, QgsDefaultValue( QStringLiteral( "current_parent_value('colZero\')" ), true ) );
+  layer->startEditing();
+
+  // initalize parent feature
+  QgsFields parentFields;
+  parentFields.append( QgsField( QStringLiteral( "colZero" ), QMetaType::Type::Int ) );
+
+  QgsFeature parentFeature( parentFields, 1 );
+  parentFeature.setAttribute( QStringLiteral( "colZero" ), 10 );
+
+  // initalize child feature
+  QgsFeature feature( layer->dataProvider()->fields(), 1 );
+
+  // build a form
+  QgsAttributeEditorContext context;
+  context.setParentFormFeature( parentFeature );
+  QgsAttributeForm form( layer, feature, context );
+
+  // get wrappers for each widget
+  QgsEditorWidgetWrapper *ww0;
+  ww0 = qobject_cast<QgsEditorWidgetWrapper *>( form.mWidgets[0] );
+
+  form.parentFormValueChanged( QStringLiteral( "colZero" ), 20 );
+
+  QCOMPARE( ww0->value().toInt(), 20 );
+}
+
 void TestQgsAttributeForm::testSameFieldSync()
 {
   // Check that widget synchronisation works when a form contains the same field several times