1 files changed, 17 insertions, 0 deletions
diff --git a/tests/lib/Files/Storage/Storage.php b/tests/lib/Files/Storage/Storage.php
index 04aafece2e3..a25a3f74f9e 100644
--- a/tests/lib/Files/Storage/Storage.php
+++ b/tests/lib/Files/Storage/Storage.php
@@ -23,6 +23,7 @@
 namespace Test\Files\Storage;
 
 use OC\Files\Cache\Watcher;
+use OCP\Files\Storage\IWriteStreamStorage;
 
 abstract class Storage extends \Test\TestCase {
 	/**
@@ -628,4 +629,20 @@ abstract class Storage extends \Test\TestCase {
 		$this->instance->rename('bar.txt.part', 'bar.txt');
 		$this->assertEquals('bar', $this->instance->file_get_contents('bar.txt'));
 	}
+
+	public function testWriteStream() {
+		$textFile = \OC::$SERVERROOT . '/tests/data/lorem.txt';
+
+		if (!$this->instance->instanceOfStorage(IWriteStreamStorage::class)) {
+			$this->markTestSkipped('Not a WriteSteamStorage');
+		}
+		/** @var IWriteStreamStorage $storage */
+		$storage = $this->instance;
+
+		$source = fopen($textFile, 'r');
+
+		$storage->writeStream('test.txt', $source);
+		$this->assertTrue($storage->file_exists('test.txt'));
+		$this->assertEquals(file_get_contents($textFile), $storage->file_get_contents('test.txt'));
+	}
 }