Adjust chunking test for non-existing target node

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/dav/tests/unit/Upload/ChunkingPluginTest.php

@@ -128,14 +128,18 @@ class ChunkingPluginTest extends TestCase {
 			->method('nodeExists')
 			->with('target')
 			->willReturn(false);
-		$this->response->expects($this->never())
-			->method('setStatus');
+		$this->response->expects($this->once())
+			->method('setHeader')
+			->with('Content-Length', '0');
+		$this->response->expects($this->once())
+			->method('setStatus')
+			->with(204);
 		$this->request->expects($this->once())
 			->method('getHeader')
 			->with('OC-Total-Length')
 			->willReturn(4);
 
-		$this->assertNull($this->plugin->beforeMove('source', 'target'));
+		$this->assertFalse($this->plugin->beforeMove('source', 'target'));
 	}
 
 	public function testBeforeMoveFutureFileMoveIt() {