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Add tests demonstrating RawAutocomplete onSubmitted bug

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RawAutocomplete.onFieldSubmitted auto-selects the first option when
called, which means pressing "Done" on an empty tag value field
re-populates it with the first NSI suggestion. These tests prove the
bug exists (unguarded path) and verify the fix (guarded path).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Doug Borg
2026-02-10 18:56:18 -07:00
parent 19b3ca236e
commit c7cfdc471c
1 changed files with 177 additions and 0 deletions
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177
test/widgets/nsi_tag_value_field_test.dart Normal file
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import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
/// Tests for the tag value field clearing bug and fix.
///
/// Root cause: RawAutocomplete.onFieldSubmitted auto-selects the first option
/// when called, and NSITagValueField's optionsBuilder returns ALL suggestions
/// when the text is empty. So pressing "Done" on the keyboard with an empty
/// field auto-selects the first NSI suggestion, making the value "pop back in".
void main() {
// Helper to build a RawAutocomplete widget tree that mirrors NSITagValueField
Widget buildAutocompleteField({
required TextEditingController controller,
required FocusNode focusNode,
required List<String> suggestions,
required ValueChanged<String> onChanged,
required ValueChanged<String> onSelected,
required bool guardOnSubmitted,
}) {
return MaterialApp(
home: Scaffold(
body: Padding(
padding: const EdgeInsets.all(16),
child: RawAutocomplete<String>(
textEditingController: controller,
focusNode: focusNode,
optionsBuilder: (TextEditingValue textEditingValue) {
if (suggestions.isEmpty) {
return const Iterable<String>.empty();
}
if (textEditingValue.text.isEmpty) return suggestions;
return suggestions
.where((s) => s.contains(textEditingValue.text));
},
onSelected: (String selection) => onSelected(selection),
fieldViewBuilder:
(context, controller, focusNode, onFieldSubmitted) {
return TextField(
controller: controller,
focusNode: focusNode,
onChanged: onChanged,
onSubmitted: guardOnSubmitted
? (_) {
if (controller.text.isNotEmpty) {
onFieldSubmitted();
}
}
: (_) => onFieldSubmitted(),
);
},
optionsViewBuilder: (context, onSelected, options) {
return Align(
alignment: Alignment.topLeft,
child: Material(
child: SizedBox(
height: 200,
child: ListView(
children: options
.map((o) => ListTile(
title: Text(o),
onTap: () => onSelected(o),
))
.toList(),
),
),
),
);
},
),
),
),
);
}
group('NSITagValueField onSubmitted behavior', () {
testWidgets(
'unguarded onFieldSubmitted auto-selects first suggestion on empty submit',
(tester) async {
String reportedValue = 'Hikvision';
final controller = TextEditingController(text: 'Hikvision');
final focusNode = FocusNode();
await tester.pumpWidget(buildAutocompleteField(
controller: controller,
focusNode: focusNode,
suggestions: ['Axis', 'Dahua', 'Hikvision'],
onChanged: (v) => reportedValue = v,
onSelected: (v) => reportedValue = v,
guardOnSubmitted: false, // old behavior
));
await tester.tap(find.byType(TextField));
await tester.pump();
// Clear the field
await tester.enterText(find.byType(TextField), '');
await tester.pump();
expect(controller.text, equals(''));
// Press "Done" on the keyboard
await tester.testTextInput.receiveAction(TextInputAction.done);
await tester.pump();
// Demonstrates the bug: first suggestion ('Axis') is auto-selected
expect(controller.text, equals('Axis'),
reason: 'Unguarded onFieldSubmitted auto-selects first suggestion');
});
testWidgets(
'guarded onFieldSubmitted keeps field empty on submit',
(tester) async {
String reportedValue = 'Hikvision';
final controller = TextEditingController(text: 'Hikvision');
final focusNode = FocusNode();
await tester.pumpWidget(buildAutocompleteField(
controller: controller,
focusNode: focusNode,
suggestions: ['Axis', 'Dahua', 'Hikvision'],
onChanged: (v) => reportedValue = v,
onSelected: (v) => reportedValue = v,
guardOnSubmitted: true, // fixed behavior
));
await tester.tap(find.byType(TextField));
await tester.pump();
// Clear the field
await tester.enterText(find.byType(TextField), '');
await tester.pump();
expect(controller.text, equals(''));
expect(reportedValue, equals(''));
// Press "Done" on the keyboard
await tester.testTextInput.receiveAction(TextInputAction.done);
await tester.pump();
// Field stays empty
expect(controller.text, equals(''),
reason: 'Field should stay empty after pressing Done');
expect(reportedValue, equals(''),
reason: 'Parent should not receive a new value');
});
testWidgets(
'guarded onFieldSubmitted still auto-completes when text is present',
(tester) async {
String reportedValue = '';
final controller = TextEditingController();
final focusNode = FocusNode();
await tester.pumpWidget(buildAutocompleteField(
controller: controller,
focusNode: focusNode,
suggestions: ['Axis', 'Dahua', 'Hikvision'],
onChanged: (v) => reportedValue = v,
onSelected: (v) => reportedValue = v,
guardOnSubmitted: true, // fixed behavior
));
await tester.tap(find.byType(TextField));
await tester.pump();
// Type a partial match
await tester.enterText(find.byType(TextField), 'Axi');
await tester.pump();
// Press "Done" → should auto-complete to 'Axis'
await tester.testTextInput.receiveAction(TextInputAction.done);
await tester.pump();
expect(controller.text, equals('Axis'),
reason: 'Should auto-complete partial text to first matching suggestion');
expect(reportedValue, equals('Axis'));
});
});
}