[Tests] Added test coverage for the bug

composer.json

@@ -11,7 +11,10 @@
         }
     },
     "autoload-dev": {
-        "psr-4": { "EzSystems\\EzPlatformAdminUi\\Tests\\": "src/lib/Tests" }
+        "psr-4": {
+            "EzSystems\\EzPlatformAdminUi\\Tests\\": "src/lib/Tests",
+            "Ibexa\\Tests\\Bundle\\AdminUi\\": "tests/bundle/"
+        }
     },
     "require": {
         "php": "^7.3 || ^8.0",

tests/bundle/DependencyInjection/Configuration/Parser/SubtreeOperationsTest.php

@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * @copyright Copyright (C) Ibexa AS. All rights reserved.
+ * @license For full copyright and license information view LICENSE file distributed with this source code.
+ */
+declare(strict_types=1);
+
+namespace Ibexa\Tests\Bundle\AdminUi\DependencyInjection\Configuration\Parser;
+
+use eZ\Bundle\EzPublishCoreBundle\DependencyInjection\Configuration\SiteAccessAware\ContextualizerInterface;
+use EzSystems\EzPlatformAdminUiBundle\DependencyInjection\Configuration\Parser\SubtreeOperations;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \EzSystems\EzPlatformAdminUiBundle\DependencyInjection\Configuration\Parser\SubtreeOperations
+ */
+final class SubtreeOperationsTest extends TestCase
+{
+    /** @var \EzSystems\EzPlatformAdminUiBundle\DependencyInjection\Configuration\Parser\SubtreeOperations */
+    private $parser;
+
+    /** @var \eZ\Bundle\EzPublishCoreBundle\DependencyInjection\Configuration\SiteAccessAware\ContextualizerInterface&\PHPUnit\Framework\MockObject\MockObject */
+    private $contextualizer;
+
+    /**
+     * @return array<string, array{int}>
+     */
+    public function getExpectedCopySubtreeLimit(): iterable
+    {
+        yield 'default = 100' => [100];
+        yield 'no limit = -1' => [-1];
+        yield 'disabled = 0' => [0];
+    }
+
+    protected function setUp(): void
+    {
+        $this->parser = new SubtreeOperations();
+        $this->contextualizer = $this->createMock(ContextualizerInterface::class);
+    }
+
+    /**
+     * @dataProvider getExpectedCopySubtreeLimit
+     */
+    public function testCopySubtreeLimit(int $expectedCopySubtreeLimit): void
+    {
+        $scopeSettings = [
+            'subtree_operations' => [
+                'copy_subtree' => [
+                    'limit' => $expectedCopySubtreeLimit,
+                ],
+            ],
+        ];
+        $currentScope = 'admin_group';
+
+        $this->contextualizer
+            ->expects(self::once())
+            ->method('setContextualParameter')
+            ->with(
+                'subtree_operations.copy_subtree.limit',
+                $currentScope,
+                $expectedCopySubtreeLimit
+            );
+
+        $this->parser->mapConfig($scopeSettings, $currentScope, $this->contextualizer);
+    }
+
+    public function testCopySubtreeLimitNotSet(): void
+    {
+        $scopeSettings = [
+            'subtree_operations' => null,
+        ];
+        $currentScope = 'admin_group';
+
+        $this->contextualizer
+            ->expects(self::never())
+            ->method('setContextualParameter');
+
+        $this->parser->mapConfig($scopeSettings, $currentScope, $this->contextualizer);
+    }
+}