dont set folder size to negative values during propagation

normally this shouldn't be a problem, but cache/storage desync might cause this
so this adds some failsafe to ensure we dont corrupt the cache further

the minimum value is set to -1 instead of 0 in order to triger a background scan
on the folder and figure out the size properly

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

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/lib/Files/Cache/PropagatorTest.php b/tests/lib/Files/Cache/PropagatorTest.php
index 402b29c8c3e..bcd808a8402 100644
--- a/tests/lib/Files/Cache/PropagatorTest.php
+++ b/tests/lib/Files/Cache/PropagatorTest.php
@@ -81,6 +81,17 @@ class PropagatorTest extends TestCase {
 		}
 	}
 
+	public function testSizePropagationNoNegative() {
+		$paths = ['', 'foo', 'foo/bar'];
+		$oldInfos = $this->getFileInfos($paths);
+		$this->storage->getPropagator()->propagateChange('foo/bar/file.txt', time(), -100);
+		$newInfos = $this->getFileInfos($paths);
+
+		foreach ($oldInfos as $i => $oldInfo) {
+			$this->assertEquals(-1, $newInfos[$i]->getSize());
+		}
+	}
+
 	public function testBatchedPropagation() {
 		$this->storage->mkdir('foo/baz');
 		$this->storage->mkdir('asd');