test: Add initial value tests to FormBuilderChoiceChip

Author: deandreamatias

packages/flutter_form_builder/test/form_builder_choice_chips_test.dart

@@ -6,28 +6,84 @@ import 'package:flutter_form_builder/flutter_form_builder.dart';
 import 'form_builder_tester.dart';
 
 void main() {
-  testWidgets('FormBuilderChoiceChip -- 1,3', (WidgetTester tester) async {
-    const widgetName = 'cc1';
-    final testWidget = FormBuilderChoiceChip<int>(
-      shouldRequestFocus: false,
-      name: widgetName,
-      options: const [
-        FormBuilderChipOption(key: ValueKey('1'), value: 1),
-        FormBuilderChipOption(key: ValueKey('2'), value: 2),
-        FormBuilderChipOption(key: ValueKey('3'), value: 3),
-      ],
-    );
-    await tester.pumpWidget(buildTestableFieldWidget(testWidget));
-
-    expect(formSave(), isTrue);
-    expect(formValue(widgetName), isNull);
-    await tester.tap(find.byKey(const ValueKey('1')));
-    await tester.pumpAndSettle();
-    expect(formSave(), isTrue);
-    expect(formValue(widgetName), equals(1));
-    await tester.tap(find.byKey(const ValueKey('3')));
-    await tester.pumpAndSettle();
-    expect(formSave(), isTrue);
-    expect(formValue(widgetName), equals(3));
+  group('FormBuilderChoiceChip --', () {
+    testWidgets('basic', (WidgetTester tester) async {
+      const widgetName = 'cc1';
+
+      final testWidget = FormBuilderChoiceChip<int>(
+        shouldRequestFocus: false,
+        name: widgetName,
+        options: const [
+          FormBuilderChipOption(key: ValueKey('1'), value: 1),
+          FormBuilderChipOption(key: ValueKey('2'), value: 2),
+          FormBuilderChipOption(key: ValueKey('3'), value: 3),
+        ],
+      );
+      await tester.pumpWidget(buildTestableFieldWidget(testWidget));
+
+      expect(formSave(), isTrue);
+      expect(formValue<int?>(widgetName), isNull);
+      await tester.tap(find.byKey(const ValueKey('1')));
+      await tester.pumpAndSettle();
+      expect(formSave(), isTrue);
+      expect(formValue<int?>(widgetName), equals(1));
+      await tester.tap(find.byKey(const ValueKey('3')));
+      await tester.pumpAndSettle();
+      expect(formSave(), isTrue);
+      expect(formValue<int?>(widgetName), equals(3));
+    });
+  });
+  group('initial value -', () {
+    testWidgets('to FormBuilder', (WidgetTester tester) async {
+      const widgetName = 'cc2';
+
+      final testWidget = FormBuilderChoiceChip<int>(
+        shouldRequestFocus: false,
+        name: widgetName,
+        options: const [
+          FormBuilderChipOption(key: ValueKey('1'), value: 1),
+          FormBuilderChipOption(key: ValueKey('2'), value: 2),
+          FormBuilderChipOption(key: ValueKey('3'), value: 3),
+        ],
+      );
+      await tester.pumpWidget(buildTestableFieldWidget(
+        testWidget,
+        initialValue: {widgetName: 1},
+      ));
+
+      await tester.ensureVisible(find.byKey(const ValueKey('1')));
+      expect(formInstantValue(widgetName), equals(1));
+      expect(formSave(), isTrue);
+      expect(formValue<int?>(widgetName), equals(1));
+      await tester.tap(find.byKey(const ValueKey('3')));
+      await tester.pumpAndSettle();
+      expect(formSave(), isTrue);
+      expect(formValue<int?>(widgetName), equals(3));
+    });
+    testWidgets('to Widget', (WidgetTester tester) async {
+      const widgetName = 'cc3';
+
+      final testWidget = FormBuilderChoiceChip<int>(
+        shouldRequestFocus: false,
+        name: widgetName,
+        initialValue: 1,
+        options: const [
+          FormBuilderChipOption(key: ValueKey('1'), value: 1),
+          FormBuilderChipOption(key: ValueKey('2'), value: 2),
+          FormBuilderChipOption(key: ValueKey('3'), value: 3),
+        ],
+      );
+      await tester.pumpWidget(buildTestableFieldWidget(testWidget));
+      await tester.pumpAndSettle();
+
+      await tester.ensureVisible(find.byKey(const ValueKey('1')));
+      expect(formInstantValue(widgetName), equals(1));
+      expect(formSave(), isTrue);
+      expect(formValue<int?>(widgetName), equals(1));
+      await tester.tap(find.byKey(const ValueKey('3')));
+      await tester.pumpAndSettle();
+      expect(formSave(), isTrue);
+      expect(formValue<int?>(widgetName), equals(3));
+    });
   });
 }