AC-3557: Fix potential problems with RFC: Deprecate passing null for Magento sample-data

Author: nishant04412

app/code/Magento/CatalogRuleSampleData/Model/Rule.php

@@ -128,7 +128,7 @@ public function convertSerializedData($data)
         preg_match_all($regexp, $data, $matches);
         $replacement = null;
         foreach ($matches[1] as $matchedId => $matchedItem) {
-            $extractedData = array_filter(explode(",", $matchedItem));
+            $extractedData = array_filter(explode(",", $matchedItem ?? ''));
             foreach ($extractedData as $extractedItem) {
                 $separatedData = array_filter(explode('=', $extractedItem));
                 if ($separatedData[0] == 'url_key') {

app/code/Magento/CatalogSampleData/Model/Attribute.php

@@ -108,7 +108,7 @@ public function install(array $fixtures)
             foreach ($rows as $row) {
                 $data = [];
                 foreach ($row as $key => $value) {
-                    $data[$header[$key]] = trim($value);
+                    $data[$header[$key]] = trim($value ?? '');
                 }
                 $data['attribute_set'] = explode("\n", $data['attribute_set']);
 
@@ -144,7 +144,7 @@ public function install(array $fixtures)
 
                 if (is_array($data['attribute_set'])) {
                     foreach ($data['attribute_set'] as $setName) {
-                        $setName = trim($setName);
+                        $setName = trim($setName ?? '');
                         $attributeCount++;
                         $attributeSet = $this->processAttributeSet($setName);
                         $attributeGroupId = $attributeSet->getDefaultGroupId();
@@ -171,7 +171,7 @@ public function install(array $fixtures)
     protected function getOption($attribute, $data)
     {
         $result = [];
-        $data['option'] = explode("\n", $data['option']);
+        $data['option'] = explode("\n", $data['option'] ?? '');
         /** @var \Magento\Eav\Model\ResourceModel\Entity\Attribute\Option\Collection $options */
         $options = $this->attrOptionCollectionFactory->create()
             ->setAttributeFilter($attribute->getId())

app/code/Magento/CatalogSampleData/Model/Product/Converter.php

@@ -165,7 +165,7 @@ protected function getArrayValue($value)
         if (is_array($value)) {
             return $value;
         }
-        if (false !== strpos($value, "\n")) {
+        if ($value !== null && false !== strpos($value, "\n")) {
             $value = array_filter(explode("\n", $value));
         }
         return !is_array($value) ? [$value] : $value;

app/code/Magento/ConfigurableSampleData/Model/Product/Converter.php

@@ -139,7 +139,7 @@ protected function convertAttributeValues($valuesData)
         $values = [];
         $prices = [];
         foreach ($valuesData as $item) {
-            $itemData = explode(';', $item);
+            $itemData = explode(';', $item ?? '');
             if (!empty($itemData[0])) {
                 $values[] = $itemData[0];
             }

app/code/Magento/SwatchesSampleData/Model/Swatches.php

@@ -126,7 +126,8 @@ private function getOptionSwatchVisual(array $attributeData)
     {
         $optionSwatch = ['value' => []];
         foreach ($attributeData['option'] as $optionKey => $optionValue) {
-            if (substr($optionValue, 0, 1) == '#' && strlen($optionValue) == 7) {
+            if ($optionValue !== null && substr($optionValue, 0, 1) == '#'
+                && strlen($optionValue) == 7) {
                 $optionSwatch['value'][$optionKey] = $optionValue;
             } else if (!empty($this->colorMap[$optionValue])) {
                 $optionSwatch['value'][$optionKey] = $this->colorMap[$optionValue];

app/code/Magento/ThemeSampleData/Model/HeadStyle.php

@@ -57,7 +57,8 @@ public function __construct(
 
     public function add($contentFile, $cssFile)
     {
-        $styleContent = preg_replace('/^\/\*[\s\S]+\*\//', '', file_get_contents($contentFile));
+        $styleContent = preg_replace('/^\/\*[\s\S]+\*\//', '',
+            file_get_contents($contentFile ?? ''));
         if (empty($styleContent)) {
             return;
         }

app/code/Magento/WishlistSampleData/Model/Wishlist.php

@@ -80,7 +80,7 @@ public function install(array $fixtures)
                 if (!$wishlist->getId()) {
                     continue;
                 }
-                $productSkuList = explode("\n", $row['product_list']);
+                $productSkuList = explode("\n", $row['product_list'] ?? '');
                 $this->helper->addProductsToWishlist($wishlist, $productSkuList);
             }
         }