Cherry-pick of 5d671a8 onto stable5.

recreate an etag within the scanner if the cache contains an empty etag

Conflicts:
	lib/files/cache/cache.php
	tests/lib/files/cache/scanner.php

1 files changed, 37 insertions, 10 deletions

diff --git a/tests/lib/files/cache/scanner.php b/tests/lib/files/cache/scanner.php
index 916ac449f29..3f3a045377a 100644
--- a/tests/lib/files/cache/scanner.php
+++ b/tests/lib/files/cache/scanner.php
@@ -24,6 +24,21 @@ class Scanner extends \PHPUnit_Framework_TestCase {
 	 */
 	private $cache;
 
+	function setUp() {
+		$this->storage = new \OC\Files\Storage\Temporary(array());
+		$this->scanner = new \OC\Files\Cache\Scanner($this->storage);
+		$this->cache = new \OC\Files\Cache\Cache($this->storage);
+	}
+
+	function tearDown() {
+		if ($this->cache) {
+			$ids = $this->cache->getAll();
+			$permissionsCache = $this->storage->getPermissionsCache();
+			$permissionsCache->removeMultiple($ids, \OC_User::getUser());
+			$this->cache->clear();
+		}
+	}
+
 	function testFile() {
 		$data = "dummy file data\n";
 		$this->storage->file_put_contents('foo.txt', $data);
@@ -194,16 +209,28 @@ class Scanner extends \PHPUnit_Framework_TestCase {
 		$this->assertFalse($this->cache->inCache('folder/bar.txt'));
 	}
 
-	function setUp() {
-		$this->storage = new \OC\Files\Storage\Temporary(array());
-		$this->scanner = new \OC\Files\Cache\Scanner($this->storage);
-		$this->cache = new \OC\Files\Cache\Cache($this->storage);
-	}
+	public function testETagRecreation() {
+		$this->fillTestFolders();
 
-	function tearDown() {
-		$ids = $this->cache->getAll();
-		$permissionsCache = $this->storage->getPermissionsCache();
-		$permissionsCache->removeMultiple($ids, \OC_User::getUser());
-		$this->cache->clear();
+		$this->scanner->scan('folder/bar.txt');
+
+		// manipulate etag to simulate an empty etag
+		$this->scanner->scan('', \OC\Files\Cache\Scanner::SCAN_SHALLOW, \OC\Files\Cache\Scanner::REUSE_ETAG);
+		$data0 = $this->cache->get('folder/bar.txt');
+		$data1 = $this->cache->get('folder');
+		$data2 = $this->cache->get('');
+		$data0['etag'] = '';
+		$this->cache->put('folder/bar.txt', $data0);
+
+		// rescan
+		$this->scanner->scan('folder/bar.txt', \OC\Files\Cache\Scanner::SCAN_SHALLOW, \OC\Files\Cache\Scanner::REUSE_ETAG);
+
+		// verify cache content
+		$newData0 = $this->cache->get('folder/bar.txt');
+		$newData1 = $this->cache->get('folder');
+		$newData2 = $this->cache->get('');
+		$this->assertNotEmpty($newData0['etag']);
+		$this->assertNotEquals($data1['etag'], $newData1['etag']);
+		$this->assertNotEquals($data2['etag'], $newData2['etag']);
 	}
 }