Add simple select multiple test to functional test

Author: Lustmored

src/LiveComponent/tests/Functional/Form/ComponentWithFormTest.php

@@ -164,6 +164,7 @@ public function testHandleCheckboxChanges(): void
             'choice' => '',
             'choice_expanded' => '',
             'choice_multiple' => ['2'],
+            'select_multiple' => ['2'],
             'checkbox_checked' => '1',
             'file' => '',
             'hidden' => '',
@@ -220,6 +221,21 @@ public function testHandleCheckboxChanges(): void
             ->assertContains('<input type="checkbox" id="form_choice_multiple_0" name="form[choice_multiple][]" value="1" />')
             ->assertContains('<input type="checkbox" id="form_checkbox" name="form[checkbox]" required="required" value="1" checked="checked" />')
             ->assertContains('<input type="checkbox" id="form_checkbox_checked" name="form[checkbox_checked]" required="required" value="1" />')
+            ->use(function (HtmlResponse $response) use (&$fullBareData, &$dehydrated, &$bareForm) {
+                $data = json_decode(
+                    $response->crawler()->filter('div')->first()->attr('data-live-data-value'),
+                    true
+                );
+                self::assertEquals($fullBareData, $data['form']);
+
+                // check both multiple fields
+                $bareForm['select_multiple'] = $fullBareData['select_multiple'] = ['2', '1'];
+
+                $dehydrated['form'] = $bareForm;
+            })
+            ->get('/_components/form_component1?data='.urlencode(json_encode($dehydrated)))
+            ->assertContains('<option value="2" selected="selected">')
+            ->assertContains('<option value="1" selected="selected">')
             ->use(function (HtmlResponse $response) use ($fullBareData) {
                 $data = json_decode(
                     $response->crawler()->filter('div')->first()->attr('data-live-data-value'),