handle limit and offset in folder file search

Signed-off-by: Robin Appelman <robin@icewind.nl>

lib/private/Files/Node/Folder.php

@@ -45,7 +45,6 @@ use OCP\Files\Search\ISearchComparison;
 use OCP\Files\Search\ISearchOperator;
 use OCP\Files\Search\ISearchQuery;
 use OCP\IUserManager;
-use OCP\IUserSession;
 
 class Folder extends Node implements \OCP\Files\Folder {
 	/**
@@ -206,10 +205,8 @@ class Folder extends Node implements \OCP\Files\Folder {
 	}
 
 	private function queryFromOperator(ISearchOperator $operator, string $uid = null): ISearchQuery {
-		if (!$uid) {
+		if ($uid === null) {
-			/** @var IUserSession $session */
+			$user = null;
-			$session = \OC::$server->query(IUserSession::class);
-			$user = $session->getUser();
 		} else {
 			/** @var IUserManager $userManager */
 			$userManager = \OC::$server->query(IUserManager::class);
@@ -229,11 +226,35 @@ class Folder extends Node implements \OCP\Files\Folder {
 			$query = $this->queryFromOperator(new SearchComparison(ISearchComparison::COMPARE_LIKE, 'name', '%' . $query . '%'));
 		}
 
+		// assume a setup where the root mount matches 15 items,
+		//   sub mount1 matches 7 items and mount2 matches 1 item
+		// a search with (0..10) returns 10 results from root with internal offset 0 and limit 10
+		// follow up search with (10..20) returns 5 results from root with internal offset 10 and limit 10
+		//   and 5 results from mount1 with internal offset 0 and limit 5
+		// next search with (20..30) return 0 results from root with internal offset 20 and limit 10
+		//   2 results from mount1 with internal offset 5[1] and limit 5
+		//   and 1 result from mount2 with internal offset 0[1] and limit 8
+		//
+		// Because of the difficulty of calculating the offset for a sub-query if the previous one returns no results
+		//   (we don't know how many results the previous sub-query has skipped with it's own offset)
+		// we instead discard the offset for the sub-queries and filter it afterwards and add the offset to limit.
+		// this is sub-optimal but shouldn't hurt to much since large offsets are uncommon in practice
+
 		$limitToHome = $query->limitToHome();
 		if ($limitToHome && count(explode('/', $this->path)) !== 3) {
 			throw new \InvalidArgumentException('searching by owner is only allows on the users home folder');
 		}
 
+		$subQueryLimit = $query->getLimit() > 0 ? $query->getLimit() + $query->getOffset() : PHP_INT_MAX;
+		$subQueryOffset = $query->getOffset();
+		$noLimitQuery = new SearchQuery(
+			$query->getSearchOperation(),
+			$subQueryLimit,
+			0,
+			$query->getOrder(),
+			$query->getUser()
+		);
+
 		$files = [];
 		$rootLength = strlen($this->path);
 		$mount = $this->root->getMount($this->path);
@@ -247,7 +268,12 @@ class Folder extends Node implements \OCP\Files\Folder {
 
 		$cache = $storage->getCache('');
 
-		$results = $cache->searchQuery($query);
+		$results = $cache->searchQuery($noLimitQuery);
+		$count = count($results);
+		$results = array_slice($results, $subQueryOffset, $subQueryLimit);
+		$subQueryOffset = max(0, $subQueryOffset - $count);
+		$subQueryLimit = max(0, $subQueryLimit - $count);
+
 		foreach ($results as $result) {
 			if ($internalRootLength === 0 or substr($result['path'], 0, $internalRootLength) === $internalPath) {
 				$result['internalPath'] = $result['path'];
@@ -260,12 +286,30 @@ class Folder extends Node implements \OCP\Files\Folder {
 		if (!$limitToHome) {
 			$mounts = $this->root->getMountsIn($this->path);
 			foreach ($mounts as $mount) {
+				if ($subQueryLimit <= 0) {
+					break;
+				}
+
+				$subQuery = new SearchQuery(
+					$query->getSearchOperation(),
+					$subQueryLimit,
+					0,
+					$query->getOrder(),
+					$query->getUser()
+				);
+
 				$storage = $mount->getStorage();
 				if ($storage) {
 					$cache = $storage->getCache('');
 
 					$relativeMountPoint = ltrim(substr($mount->getMountPoint(), $rootLength), '/');
-					$results = $cache->searchQuery($query);
+					$results = $cache->searchQuery($subQuery);
+
+					$count = count($results);
+					$results = array_slice($results, $subQueryOffset, $subQueryLimit);
+					$subQueryOffset -= $count;
+					$subQueryLimit -= $count;
+
 					foreach ($results as $result) {
 						$result['internalPath'] = $result['path'];
 						$result['path'] = $relativeMountPoint . $result['path'];

tests/lib/Files/Node/FolderTest.php

@@ -14,13 +14,18 @@ use OC\Files\Config\CachedMountInfo;
 use OC\Files\FileInfo;
 use OC\Files\Mount\Manager;
 use OC\Files\Mount\MountPoint;
+use OC\Files\Node\Folder;
 use OC\Files\Node\Node;
 use OC\Files\Node\Root;
+use OC\Files\Search\SearchComparison;
+use OC\Files\Search\SearchQuery;
 use OC\Files\Storage\Temporary;
 use OC\Files\Storage\Wrapper\Jail;
 use OC\Files\View;
 use OCP\Files\Mount\IMountPoint;
 use OCP\Files\NotFoundException;
+use OCP\Files\Search\ISearchComparison;
+use OCP\Files\Search\ISearchQuery;
 use OCP\Files\Storage;
 
 /**
@@ -32,7 +37,7 @@ use OCP\Files\Storage;
  */
 class FolderTest extends NodeTest {
 	protected function createTestNode($root, $view, $path) {
-		return new \OC\Files\Node\Folder($root, $view, $path);
+		return new Folder($root, $view, $path);
 	}
 
 	protected function getNodeClass() {
@@ -65,10 +70,10 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo')
 			->willReturn([
 				new FileInfo('/bar/foo/asd', null, 'foo/asd', ['fileid' => 2, 'path' => '/bar/foo/asd', 'name' => 'asd', 'size' => 100, 'mtime' => 50, 'mimetype' => 'text/plain'], null),
-				new FileInfo('/bar/foo/qwerty', null, 'foo/qwerty', ['fileid' => 3, 'path' => '/bar/foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'httpd/unix-directory'], null)
+				new FileInfo('/bar/foo/qwerty', null, 'foo/qwerty', ['fileid' => 3, 'path' => '/bar/foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'httpd/unix-directory'], null),
 			]);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$children = $node->getDirectoryListing();
 		$this->assertEquals(2, count($children));
 		$this->assertInstanceOf('\OC\Files\Node\File', $children[0]);
@@ -96,7 +101,7 @@ class FolderTest extends NodeTest {
 			->method('get')
 			->with('/bar/foo/asd');
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$node->get('asd');
 	}
 
@@ -113,14 +118,14 @@ class FolderTest extends NodeTest {
 			->method('getUser')
 			->willReturn($this->user);
 
-		$child = new \OC\Files\Node\Folder($root, $view, '/bar/foo/asd');
+		$child = new Folder($root, $view, '/bar/foo/asd');
 
 		$root->expects($this->once())
 			->method('get')
 			->with('/bar/foo/asd')
 			->willReturn($child);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$this->assertTrue($node->nodeExists('asd'));
 	}
 
@@ -142,7 +147,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo/asd')
 			->will($this->throwException(new NotFoundException()));
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$this->assertFalse($node->nodeExists('asd'));
 	}
 
@@ -169,8 +174,8 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo/asd')
 			->willReturn(true);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
-		$child = new \OC\Files\Node\Folder($root, $view, '/bar/foo/asd');
+		$child = new Folder($root, $view, '/bar/foo/asd');
 		$result = $node->newFolder('asd');
 		$this->assertEquals($child, $result);
 	}
@@ -196,7 +201,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo')
 			->willReturn($this->getFileInfo(['permissions' => \OCP\Constants::PERMISSION_READ]));
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$node->newFolder('asd');
 	}
 
@@ -223,7 +228,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo/asd')
 			->willReturn(true);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$child = new \OC\Files\Node\File($root, $view, '/bar/foo/asd');
 		$result = $node->newFile('asd');
 		$this->assertEquals($child, $result);
@@ -250,7 +255,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo')
 			->willReturn($this->getFileInfo(['permissions' => \OCP\Constants::PERMISSION_READ]));
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$node->newFile('asd');
 	}
 
@@ -272,7 +277,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo')
 			->willReturn(100);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$this->assertEquals(100, $node->getFreeSpace());
 	}
 
@@ -307,7 +312,7 @@ class FolderTest extends NodeTest {
 		$cache->expects($this->once())
 			->method('searchQuery')
 			->willReturn([
-				new CacheEntry(['fileid' => 3, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain'])
+				new CacheEntry(['fileid' => 3, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
 			]);
 
 		$root->expects($this->once())
@@ -320,7 +325,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo')
 			->willReturn($mount);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$result = $node->search('qw');
 		$this->assertEquals(1, count($result));
 		$this->assertEquals('/bar/foo/qwerty', $result[0]->getPath());
@@ -409,7 +414,7 @@ class FolderTest extends NodeTest {
 		$cache->expects($this->once())
 			->method('searchQuery')
 			->willReturn([
-				new CacheEntry(['fileid' => 3, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain'])
+				new CacheEntry(['fileid' => 3, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
 			]);
 
 		$root->expects($this->once())
@@ -422,7 +427,7 @@ class FolderTest extends NodeTest {
 			->with('/bar')
 			->willReturn($mount);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar');
+		$node = new Folder($root, $view, '/bar');
 		$result = $node->search('qw');
 		$this->assertEquals(1, count($result));
 		$this->assertEquals('/bar/foo/qwerty', $result[0]->getPath());
@@ -474,13 +479,13 @@ class FolderTest extends NodeTest {
 		$cache->expects($this->once())
 			->method('searchQuery')
 			->willReturn([
-				new CacheEntry(['fileid' => 3, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain'])
+				new CacheEntry(['fileid' => 3, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
 			]);
 
 		$subCache->expects($this->once())
 			->method('searchQuery')
 			->willReturn([
-				new CacheEntry(['fileid' => 4, 'path' => 'asd/qweasd', 'name' => 'qweasd', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain'])
+				new CacheEntry(['fileid' => 4, 'path' => 'asd/qweasd', 'name' => 'qweasd', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
 			]);
 
 		$root->expects($this->once())
@@ -494,14 +499,14 @@ class FolderTest extends NodeTest {
 			->willReturn($mount);
 
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$result = $node->search('qw');
 		$this->assertEquals(2, count($result));
 	}
 
 	public function testIsSubNode() {
 		$file = new Node(null, null, '/foo/bar');
-		$folder = new \OC\Files\Node\Folder(null, null, '/foo');
+		$folder = new Folder(null, null, '/foo');
 		$this->assertTrue($folder->isSubNode($file));
 		$this->assertFalse($folder->isSubNode($folder));
 
@@ -557,7 +562,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo')
 			->willReturn($mount);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$result = $node->getById(1);
 		$this->assertEquals(1, count($result));
 		$this->assertEquals('/bar/foo/qwerty', $result[0]->getPath());
@@ -606,7 +611,7 @@ class FolderTest extends NodeTest {
 			->with('/bar')
 			->willReturn($mount);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar');
+		$node = new Folder($root, $view, '/bar');
 		$result = $node->getById(1);
 		$this->assertEquals(1, count($result));
 		$this->assertEquals('/bar', $result[0]->getPath());
@@ -660,7 +665,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo')
 			->willReturn($mount);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$result = $node->getById(1);
 		$this->assertEquals(0, count($result));
 	}
@@ -706,7 +711,7 @@ class FolderTest extends NodeTest {
 					'/bar/foo/asd/',
 					1,
 					''
-				)
+				),
 			]);
 
 		$storage->expects($this->any())
@@ -728,7 +733,7 @@ class FolderTest extends NodeTest {
 			->with('/bar/foo')
 			->willReturn($mount1);
 
-		$node = new \OC\Files\Node\Folder($root, $view, '/bar/foo');
+		$node = new Folder($root, $view, '/bar/foo');
 		$result = $node->getById(1);
 		$this->assertEquals(2, count($result));
 		$this->assertEquals('/bar/foo/qwerty', $result[0]->getPath());
@@ -740,7 +745,7 @@ class FolderTest extends NodeTest {
 			// input, existing, expected
 			['foo', [], 'foo'],
 			['foo', ['foo'], 'foo (2)'],
-			['foo', ['foo', 'foo (2)'], 'foo (3)']
+			['foo', ['foo', 'foo (2)'], 'foo (3)'],
 		];
 	}
 
@@ -770,7 +775,7 @@ class FolderTest extends NodeTest {
 				return false;
 			});
 
-		$node = new \OC\Files\Node\Folder($root, $view, $folderPath);
+		$node = new Folder($root, $view, $folderPath);
 		$this->assertEquals($expected, $node->getNonExistingName($name));
 	}
 
@@ -805,30 +810,30 @@ class FolderTest extends NodeTest {
 			'mtime' => $baseTime,
 			'mimetype' => 'text/plain',
 			'size' => 3,
-			'permissions' => \OCP\Constants::PERMISSION_ALL
+			'permissions' => \OCP\Constants::PERMISSION_ALL,
 		]);
 		$id2 = $cache->put('bar/foo/old.txt', [
 			'storage_mtime' => $baseTime - 100,
 			'mtime' => $baseTime - 100,
 			'mimetype' => 'text/plain',
 			'size' => 3,
-			'permissions' => \OCP\Constants::PERMISSION_READ
+			'permissions' => \OCP\Constants::PERMISSION_READ,
 		]);
 		$cache->put('bar/asd/outside.txt', [
 			'storage_mtime' => $baseTime,
 			'mtime' => $baseTime,
 			'mimetype' => 'text/plain',
-			'size' => 3
+			'size' => 3,
 		]);
 		$id3 = $cache->put('bar/foo/older.txt', [
 			'storage_mtime' => $baseTime - 600,
 			'mtime' => $baseTime - 600,
 			'mimetype' => 'text/plain',
 			'size' => 3,
-			'permissions' => \OCP\Constants::PERMISSION_ALL
+			'permissions' => \OCP\Constants::PERMISSION_ALL,
 		]);
 
-		$node = new \OC\Files\Node\Folder($root, $view, $folderPath, $folderInfo);
+		$node = new Folder($root, $view, $folderPath, $folderInfo);
 
 
 		$nodes = $node->getRecent(5);
@@ -869,7 +874,7 @@ class FolderTest extends NodeTest {
 			'mtime' => $baseTime,
 			'mimetype' => \OCP\Files\FileInfo::MIMETYPE_FOLDER,
 			'size' => 3,
-			'permissions' => 0
+			'permissions' => 0,
 		]);
 		$id2 = $cache->put('bar/foo/folder/bar.txt', [
 			'storage_mtime' => $baseTime,
@@ -877,7 +882,7 @@ class FolderTest extends NodeTest {
 			'mimetype' => 'text/plain',
 			'size' => 3,
 			'parent' => $id1,
-			'permissions' => \OCP\Constants::PERMISSION_ALL
+			'permissions' => \OCP\Constants::PERMISSION_ALL,
 		]);
 		$id3 = $cache->put('bar/foo/folder/asd.txt', [
 			'storage_mtime' => $baseTime - 100,
@@ -885,10 +890,10 @@ class FolderTest extends NodeTest {
 			'mimetype' => 'text/plain',
 			'size' => 3,
 			'parent' => $id1,
-			'permissions' => \OCP\Constants::PERMISSION_ALL
+			'permissions' => \OCP\Constants::PERMISSION_ALL,
 		]);
 
-		$node = new \OC\Files\Node\Folder($root, $view, $folderPath, $folderInfo);
+		$node = new Folder($root, $view, $folderPath, $folderInfo);
 
 
 		$nodes = $node->getRecent(5);
@@ -920,7 +925,7 @@ class FolderTest extends NodeTest {
 		$storage = new Temporary();
 		$jail = new Jail([
 			'storage' => $storage,
-			'root' => 'folder'
+			'root' => 'folder',
 		]);
 		$mount = new MountPoint($jail, '/bar/foo');
 
@@ -935,16 +940,16 @@ class FolderTest extends NodeTest {
 			'mtime' => $baseTime,
 			'mimetype' => 'text/plain',
 			'size' => 3,
-			'permissions' => \OCP\Constants::PERMISSION_ALL
+			'permissions' => \OCP\Constants::PERMISSION_ALL,
 		]);
 		$cache->put('outside.txt', [
 			'storage_mtime' => $baseTime - 100,
 			'mtime' => $baseTime - 100,
 			'mimetype' => 'text/plain',
-			'size' => 3
+			'size' => 3,
 		]);
 
-		$node = new \OC\Files\Node\Folder($root, $view, $folderPath, $folderInfo);
+		$node = new Folder($root, $view, $folderPath, $folderInfo);
 
 		$nodes = $node->getRecent(5);
 		$ids = array_map(function (Node $node) {
@@ -952,4 +957,115 @@ class FolderTest extends NodeTest {
 		}, $nodes);
 		$this->assertEquals([$id1], $ids);
 	}
+
+	public function offsetLimitProvider() {
+		return [
+			[0, 10, [10, 11, 12, 13, 14, 15, 16, 17]],
+			[0, 5, [10, 11, 12, 13, 14]],
+			[0, 2, [10, 11]],
+			[3, 2, [13, 14]],
+			[3, 5, [13, 14, 15, 16, 17]],
+			[5, 2, [15, 16]],
+			[6, 2, [16, 17]],
+			[7, 2, [17]],
+			[10, 2, []]
+		];
+	}
+
+	/**
+	 * @dataProvider offsetLimitProvider
+	 */
+	public function testSearchSubStoragesLimitOffset(int $offset, int $limit, array $expectedIds) {
+		$manager = $this->createMock(Manager::class);
+		/**
+		 * @var \OC\Files\View | \PHPUnit\Framework\MockObject\MockObject $view
+		 */
+		$view = $this->createMock(View::class);
+		$root = $this->getMockBuilder(Root::class)
+			->setConstructorArgs([$manager, $view, $this->user, $this->userMountCache, $this->logger, $this->userManager])
+			->getMock();
+		$root->expects($this->any())
+			->method('getUser')
+			->willReturn($this->user);
+		$storage = $this->createMock(Storage::class);
+		$storage->method('getId')->willReturn('');
+		$cache = $this->getMockBuilder(Cache::class)->setConstructorArgs([$storage])->getMock();
+		$subCache1 = $this->getMockBuilder(Cache::class)->setConstructorArgs([$storage])->getMock();
+		$subStorage1 = $this->createMock(Storage::class);
+		$subMount1 = $this->getMockBuilder(MountPoint::class)->setConstructorArgs([null, ''])->getMock();
+		$subCache2 = $this->getMockBuilder(Cache::class)->setConstructorArgs([$storage])->getMock();
+		$subStorage2 = $this->createMock(Storage::class);
+		$subMount2 = $this->getMockBuilder(MountPoint::class)->setConstructorArgs([null, ''])->getMock();
+
+		$mount = $this->createMock(IMountPoint::class);
+		$mount->method('getStorage')
+			->willReturn($storage);
+		$mount->method('getInternalPath')
+			->willReturn('foo');
+
+		$subMount1->method('getStorage')
+			->willReturn($subStorage1);
+
+		$subMount1->method('getMountPoint')
+			->willReturn('/bar/foo/bar/');
+
+		$storage->method('getCache')
+			->willReturn($cache);
+
+		$subStorage1->method('getCache')
+			->willReturn($subCache1);
+
+		$subMount2->method('getStorage')
+			->willReturn($subStorage2);
+
+		$subMount2->method('getMountPoint')
+			->willReturn('/bar/foo/bar2/');
+
+		$subStorage2->method('getCache')
+			->willReturn($subCache2);
+
+		$cache->method('searchQuery')
+			->willReturnCallback(function (ISearchQuery $query) {
+				return array_slice([
+					new CacheEntry(['fileid' => 10, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
+					new CacheEntry(['fileid' => 11, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
+					new CacheEntry(['fileid' => 12, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
+					new CacheEntry(['fileid' => 13, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain'])
+				], $query->getOffset(), $query->getOffset() + $query->getLimit());
+			});
+
+		$subCache1->method('searchQuery')
+			->willReturnCallback(function (ISearchQuery $query) {
+				return array_slice([
+					new CacheEntry(['fileid' => 14, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
+					new CacheEntry(['fileid' => 15, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
+				], $query->getOffset(), $query->getOffset() + $query->getLimit());
+			});
+
+		$subCache2->method('searchQuery')
+			->willReturnCallback(function (ISearchQuery $query) {
+				return array_slice([
+					new CacheEntry(['fileid' => 16, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
+					new CacheEntry(['fileid' => 17, 'path' => 'foo/qwerty', 'name' => 'qwerty', 'size' => 200, 'mtime' => 55, 'mimetype' => 'text/plain']),
+				], $query->getOffset(), $query->getOffset() + $query->getLimit());
+			});
+
+		$root->method('getMountsIn')
+			->with('/bar/foo')
+			->willReturn([$subMount1, $subMount2]);
+
+		$root->method('getMount')
+			->with('/bar/foo')
+			->willReturn($mount);
+
+
+		$node = new Folder($root, $view, '/bar/foo');
+		$comparison = new SearchComparison(ISearchComparison::COMPARE_LIKE, 'name', '%foo%');
+		$query = new SearchQuery($comparison, $limit, $offset, []);
+		$result = $node->search($query);
+		$ids = array_map(function(Node $info) {
+			return $info->getId();
+		}, $result);
+		$this->assertEquals($expectedIds, $ids);
+	}
 }