diff --git a/tests/lib/connector/sabre/aborteduploaddetectionplugin.php b/tests/lib/connector/sabre/aborteduploaddetectionplugin.php
new file mode 100644
index 0000000000000000000000000000000000000000..8237bdbd9e3f33a322b43589e681b543766b2938
--- /dev/null
+++ b/tests/lib/connector/sabre/aborteduploaddetectionplugin.php
@@ -0,0 +1,93 @@
+<?php
+/**
+ * Copyright (c) 2013 Thomas Müller <thomas.mueller@tmit.eu>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+class Test_OC_Connector_Sabre_AbortedUploadDetectionPlugin extends PHPUnit_Framework_TestCase {
+
+	/**
+	 * @var Sabre_DAV_Server
+	 */
+	private $server;
+
+	/**
+	 * @var OC_Connector_Sabre_AbortedUploadDetectionPlugin
+	 */
+	private $plugin;
+
+	public function setUp() {
+		$this->server = new Sabre_DAV_Server();
+		$this->plugin = new OC_Connector_Sabre_AbortedUploadDetectionPlugin();
+		$this->plugin->initialize($this->server);
+	}
+
+	/**
+	 * @dataProvider lengthProvider
+	 */
+	public function testLength($expected, $headers)
+	{
+		$this->server->httpRequest = new Sabre_HTTP_Request($headers);
+		$length = $this->plugin->getLength();
+		$this->assertEquals($expected, $length);
+	}
+
+	/**
+	 * @dataProvider verifyContentLengthProvider
+	 */
+	public function testVerifyContentLength($fileSize, $headers)
+	{
+		$this->plugin->fileView = $this->buildFileViewMock($fileSize);
+
+		$this->server->httpRequest = new Sabre_HTTP_Request($headers);
+		$this->plugin->verifyContentLength('foo.txt');
+		$this->assertTrue(true);
+	}
+
+	/**
+	 * @dataProvider verifyContentLengthFailedProvider
+	 * @expectedException Sabre_DAV_Exception_BadRequest
+	 */
+	public function testVerifyContentLengthFailed($fileSize, $headers)
+	{
+		$this->plugin->fileView = $this->buildFileViewMock($fileSize);
+
+		$this->server->httpRequest = new Sabre_HTTP_Request($headers);
+		$this->plugin->verifyContentLength('foo.txt');
+	}
+
+	public function verifyContentLengthProvider() {
+		return array(
+			array(1024, array()),
+			array(1024, array('HTTP_X_EXPECTED_ENTITY_LENGTH' => '1024')),
+			array(512, array('HTTP_CONTENT_LENGTH' => '512')),
+		);
+	}
+
+	public function verifyContentLengthFailedProvider() {
+		return array(
+			array(1025, array('HTTP_X_EXPECTED_ENTITY_LENGTH' => '1024')),
+			array(525, array('HTTP_CONTENT_LENGTH' => '512')),
+		);
+	}
+
+	public function lengthProvider() {
+		return array(
+			array(null, array()),
+			array(1024, array('HTTP_X_EXPECTED_ENTITY_LENGTH' => '1024')),
+			array(512, array('HTTP_CONTENT_LENGTH' => '512')),
+			array(2048, array('HTTP_X_EXPECTED_ENTITY_LENGTH' => '2048', 'HTTP_CONTENT_LENGTH' => '1024')),
+		);
+	}
+
+	private function buildFileViewMock($fileSize) {
+		// mock filesysten
+		$view = $this->getMock('\OC\Files\View', array('filesize', 'unlink'), array(), '', FALSE);
+		$view->expects($this->any())->method('filesize')->withAnyParameters()->will($this->returnValue($fileSize));
+
+		return $view;
+	}
+
+}