Fixed null deprecation in Mage_Catalog_Model_Product_Option_Type_Text::validateUserValue() (OpenMage#4357)

* Fixed null deprecation in Mage/Catalog/Model/Product/Option/Type/Text

* Added test

* Added method

* Changed at source.

* Fix bug on array to string conversion on date input type.

* Revert eveything.

---------

Co-authored-by: Sven Reichel <[email protected]>

Author: kiatng

app/code/core/Mage/Catalog/Model/Product/Option/Type/Text.php

@@ -21,12 +21,17 @@
  */
 class Mage_Catalog_Model_Product_Option_Type_Text extends Mage_Catalog_Model_Product_Option_Type_Default
 {
+    public function getUserValue(): string
+    {
+        return (string) $this->getDataByKey('user_value');
+    }
+
     /**
      * Validate user input for option
      *
      * @throws Mage_Core_Exception
      * @param array $values All product option values, i.e. array (option_id => mixed, option_id => mixed...)
-     * @return Mage_Catalog_Model_Product_Option_Type_Default
+     * @return $this
      */
     public function validateUserValue($values)
     {

tests/unit/Mage/Catalog/Model/Product/Option/Type/TextTest.php

@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * OpenMage
+ *
+ * This source file is subject to the Open Software License (OSL 3.0)
+ * that is bundled with this package in the file LICENSE.txt.
+ * It is also available at https://opensource.org/license/osl-3-0-php
+ *
+ * @category   OpenMage
+ * @package    OpenMage_Tests
+ * @copyright  Copyright (c) 2024 The OpenMage Contributors (https://www.openmage.org)
+ * @license    https://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
+ */
+
+declare(strict_types=1);
+
+namespace OpenMage\Tests\Unit\Mage\Catalog\Model\Product\Option\Type;
+
+use Generator;
+use Mage;
+use Mage_Catalog_Model_Product_Option;
+use Mage_Catalog_Model_Product_Option_Type_Text as Subject;
+use PHPUnit\Framework\TestCase;
+
+class TextTest extends TestCase
+{
+    public Subject $subject;
+
+    public function setUp(): void
+    {
+        Mage::app();
+        $this->subject = Mage::getModel('catalog/product_option_type_text');
+    }
+
+    /**
+     * @group Mage_Catalog
+     * @group Mage_Catalog_Model
+     * @group runInSeparateProcess
+     * @runInSeparateProcess
+     */
+    public function testValidateUserValue(): void
+    {
+        $this->subject->setOption(new Mage_Catalog_Model_Product_Option());
+        $this->assertInstanceOf(Subject::class, $this->subject->validateUserValue([]));
+    }
+
+
+    /**
+     * @dataProvider providePrepareForCart
+     * @group Mage_Catalog
+     * @group Mage_Catalog_Model
+     */
+    public function testPrepareForCart($expectedResult, bool $setIsValid = true, $setUserValue = null): void
+    {
+        $this->subject->setIsValid($setIsValid)->setUserValue($setUserValue);
+        $this->assertSame($expectedResult, $this->subject->prepareForCart());
+    }
+
+    public function providePrepareForCart(): Generator
+    {
+        yield 'valid' => [
+            'test',
+            true,
+            'test',
+        ];
+        yield 'invalid' => [
+            null,
+        ];
+    }
+
+    /**
+     * @covers Mage_Catalog_Model_Product_Option_Type_Text::getFormattedOptionValue()
+     * @group Mage_Catalog
+     * @group Mage_Catalog_Model
+     */
+    public function testGetDefaultAttributeSetId(): void
+    {
+        $this->assertIsString($this->subject->getFormattedOptionValue(''));
+    }
+}