Added null check in DataFixtureSetup for the scope

dev/tests/integration/framework/Magento/TestFramework/Annotation/DataFixtureSetup.php

@@ -46,6 +46,9 @@ public function apply(array $fixture): ?DataObject
         $factory = $this->dataFixtureFactory->create($fixture['factory']);
         if (isset($fixture['scope'])) {
             $scope = DataFixtureStorageManager::getStorage()->get($fixture['scope']);
+            if (null === $scope) {
+                throw new \RuntimeException(sprintf('Scope "%s" does not exist.', $fixture['scope']));
+            }
             $fromScope = $this->scopeSwitcher->switch($scope);
             try {
                 $result = $factory->apply($data);

dev/tests/integration/framework/tests/unit/testsuite/Magento/Test/Annotation/DataFixtureSetupTest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace integration\framework\tests\unit\testsuite\Magento\Test\Annotation;
+
+use Magento\Framework\Registry;
+use Magento\TestFramework\Annotation\DataFixtureSetup;
+use Magento\TestFramework\Fixture\DataFixtureFactory;
+use Magento\TestFramework\Fixture\DataFixtureStorage;
+use Magento\TestFramework\Fixture\DataFixtureStorageManager;
+use Magento\TestFramework\ScopeSwitcherInterface;
+use PHPUnit\Framework\TestCase;
+
+class DataFixtureSetupTest extends TestCase
+{
+    private ?DataFixtureSetup $object;
+
+    private ?Registry $registry;
+    private ?DataFixtureFactory $dataFixtureFactory;
+    private ?ScopeSwitcherInterface $scopeSwitcher;
+
+    protected function setUp(): void
+    {
+        $this->registry = $this->createMock(Registry::class);
+        $this->dataFixtureFactory = $this->createMock(DataFixtureFactory::class);
+        $this->scopeSwitcher = $this->createMock(ScopeSwitcherInterface::class);
+        $this->object = new DataFixtureSetup($this->registry, $this->dataFixtureFactory, $this->scopeSwitcher);
+    }
+
+    public function testApplyWithArbitraryScopeThrowsException(): void
+    {
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Scope "non_existing_scope" does not exist.');
+
+        $storage = new DataFixtureStorage();
+        DataFixtureStorageManager::setStorage($storage);
+
+        $this->object->apply([
+            'data' => [],
+            'factory' => 'DummyFixtureClass',
+            'scope' => 'non_existing_scope',
+        ]);
+    }
+}