Add test for email validation

app/Form/Fields/EmailField.php

@@ -17,6 +17,6 @@ class EmailField extends TextField
      */
     public function getRegistrationRules(Form $form): array
     {
-        return [$this->key => $this->required ? ['required', 'string', 'email'] : ['nullable', 'string']];
+        return [$this->key => $this->required ? ['required', 'string', 'email'] : ['nullable', 'email', 'string']];
     }
 }

tests/Feature/Form/FormRegisterActionTest.php

@@ -254,6 +254,18 @@ class FormRegisterActionTest extends FormTestCase
             ['vorname' => 5],
             ['vorname' => 'Vorname der Mutter muss ein String sein.']
         ];
+
+        yield [
+            $this->emailField('email')->name('Mail')->required(true),
+            ['email' => 'alaaa'],
+            ['email' => 'Mail muss eine gültige E-Mail-Adresse sein.']
+        ];
+
+        yield [
+            $this->emailField('email')->name('Mail')->required(false),
+            ['email' => 'alaaa'],
+            ['email' => 'Mail muss eine gültige E-Mail-Adresse sein.']
+        ];
     }
 
     public function testItValidatesGroupFieldWithParentGroupField(): void

tests/Lib/CreatesFormFields.php

@@ -6,6 +6,7 @@ use App\Form\Fields\CheckboxesField;
 use App\Form\Fields\CheckboxField;
 use App\Form\Fields\DateField;
 use App\Form\Fields\DropdownField;
+use App\Form\Fields\EmailField;
 use App\Form\Fields\GroupField;
 use App\Form\Fields\NamiField;
 use App\Form\Fields\RadioField;
@@ -26,6 +27,11 @@ trait CreatesFormFields
         return FormtemplateFieldRequest::type(TextField::class)->key($key ?? $this->randomKey());
     }
 
+    protected function emailField(?string $key = null): FormtemplateFieldRequest
+    {
+        return FormtemplateFieldRequest::type(EmailField::class)->key($key ?? $this->randomKey());
+    }
+
     protected function checkboxesField(?string $key = null): FormtemplateFieldRequest
     {
         return FormtemplateFieldRequest::type(CheckboxesField::class)->key($key ?? $this->randomKey());