test: add autovalidate mode test cases on form builder field

Author: deandreamatias

test/src/form_builder_field_test.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_form_builder/flutter_form_builder.dart';
 import 'package:flutter_test/flutter_test.dart';
 
@@ -181,6 +182,21 @@ void main() {
 
         expect(find.text(errorTextField), findsOneWidget);
       });
+      testWidgets(
+          'Should not show error when init form and AutovalidateMode is disabled',
+          (tester) async {
+        const textFieldName = 'text4';
+        const errorTextField = 'error text field';
+        final testWidget = FormBuilderTextField(
+          name: textFieldName,
+          autovalidateMode: AutovalidateMode.disabled,
+          validator: (value) => errorTextField,
+        );
+        await tester.pumpWidget(buildTestableFieldWidget(testWidget));
+        await tester.pumpAndSettle();
+
+        expect(find.text(errorTextField), findsNothing);
+      });
       testWidgets(
           'Should show error when AutovalidateMode is onUserInteraction and change field',
           (tester) async {
@@ -199,6 +215,47 @@ void main() {
 
         expect(find.text(errorTextField), findsOneWidget);
       });
+      testWidgets(
+          'Should show error when init form and AutovalidateMode is onUnfocus',
+          (tester) async {
+        const textFieldName = 'text4';
+        const errorTextField = 'error text field';
+        final testWidget = FormBuilderTextField(
+          name: textFieldName,
+          autovalidateMode: AutovalidateMode.onUnfocus,
+          validator: (value) => errorTextField,
+        );
+        final widgetFinder = find.byWidget(testWidget);
+
+        // Init form
+        await tester.pumpWidget(buildTestableFieldWidget(
+          Column(
+            children: [
+              testWidget,
+              ElevatedButton(onPressed: () {}, child: const Text('Submit')),
+            ],
+          ),
+          autovalidateMode: AutovalidateMode.onUnfocus,
+        ));
+        await tester.pumpAndSettle();
+        final focusNode =
+            formKey.currentState?.fields[textFieldName]?.effectiveFocusNode;
+        expect(find.text(errorTextField), findsNothing);
+        expect(Focus.of(tester.element(widgetFinder)).hasFocus, false);
+        expect(focusNode?.hasFocus, false);
+
+        // Focus input and write text
+        await tester.enterText(widgetFinder, 'test');
+        await tester.pumpAndSettle();
+        expect(Focus.of(tester.element(widgetFinder)).hasFocus, true);
+        expect(focusNode?.hasFocus, true);
+        expect(find.text(errorTextField), findsNothing);
+
+        // Unfocus input and show error
+        await tester.sendKeyEvent(LogicalKeyboardKey.tab);
+        await tester.pumpAndSettle();
+        expect(find.text(errorTextField), findsOneWidget);
+      });
     });
     group('isDirty - ', () {
       testWidgets('Should not dirty by default', (tester) async {