test(SearchComposerTest): add unit tests for SearchComposer

Signed-off-by: Misha M.-Kupriyanov <kupriyanov@strato.de>

tests/lib/Search/SearchComposerTest.php

@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace Test\Search;
+
+use OC\AppFramework\Bootstrap\Coordinator;
+use OC\Search\SearchComposer;
+use OCP\IAppConfig;
+use OCP\IURLGenerator;
+use PHPUnit\Framework\MockObject\MockObject;
+use Psr\Container\ContainerInterface;
+use Psr\Log\LoggerInterface;
+use Test\TestCase;
+
+class SearchComposerTest extends TestCase {
+	private Coordinator&MockObject $bootstrapCoordinator;
+	private ContainerInterface&MockObject $container;
+	private IURLGenerator&MockObject $urlGenerator;
+	private LoggerInterface&MockObject $logger;
+	private IAppConfig&MockObject $appConfig;
+	private SearchComposer $searchComposer;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->bootstrapCoordinator = $this->createMock(Coordinator::class);
+		$this->container = $this->createMock(ContainerInterface::class);
+		$this->urlGenerator = $this->createMock(IURLGenerator::class);
+		$this->logger = $this->createMock(LoggerInterface::class);
+		$this->appConfig = $this->createMock(IAppConfig::class);
+
+		$this->searchComposer = new SearchComposer(
+			$this->bootstrapCoordinator,
+			$this->container,
+			$this->urlGenerator,
+			$this->logger,
+			$this->appConfig
+		);
+	}
+
+	private function setupEmptyRegistrationContext(): void {
+		$this->bootstrapCoordinator->expects($this->once())
+			->method('getRegistrationContext')
+			->willReturn(null);
+	}
+
+	public function testGetProvidersWithNoRegisteredProviders(): void {
+		$this->setupEmptyRegistrationContext();
+
+		$providers = $this->searchComposer->getProviders('/test/route', []);
+
+		$this->assertIsArray($providers);
+		$this->assertEmpty($providers);
+	}
+}