Fixing using controller's value as initial value (#218)

* Initializer PhoneFormField super.initialValue also with controller.initialValue

* PhoneFormFieldState.didUpdateWidget

* Revert "PhoneFormFieldState.didUpdateWidget"

This reverts commit c2daad1.

* Using `controller.value` as `initialValue`

* Fix formatting

* Adding a test inspecting widget state value

* Fix formatting

---------

Co-authored-by: Muccy <muccymac@gmail.com>

lib/src/phone_form_field.dart

@@ -137,7 +137,7 @@ class PhoneFormField extends FormField<PhoneNumber> {
     this.countryButtonPadding,
     // form field inputs
     super.validator,
-    super.initialValue,
+    PhoneNumber? initialValue,
     super.onSaved,
     super.autovalidateMode = AutovalidateMode.onUserInteraction,
     super.restorationId,
@@ -188,6 +188,7 @@ class PhoneFormField extends FormField<PhoneNumber> {
             isCountryButtonPersistent ?? isCountryChipPersistent ?? true,
         super(
           builder: (state) => (state as PhoneFormFieldState).builder(),
+          initialValue: controller?.value ?? initialValue,
         );
 
   @override

test/phone_form_field_test.dart

@@ -167,6 +167,16 @@ void main() {
       );
     });
 
+    testWidgets('Should get value of controller as initial value', (tester) async {
+      final controller = PhoneController();
+      final phoneNumber = PhoneNumber.parse('+33488997722');
+      controller.value = phoneNumber;
+      await tester.pumpWidget(getWidget(controller: controller));
+
+      final PhoneFormFieldState phoneFieldState = tester.state(find.byType(PhoneFormField));
+      expect(phoneFieldState.value, equals(phoneNumber));
+    });
+
     testWidgets('Should change value of input when controller changes',
         (tester) async {
       final controller = PhoneController();