fix: Allow num_buckets to be equal as min_bucket

Signed-off-by: Kostiantyn Miakshyn <[email protected]>

Author: Koc

lib/private/Files/ObjectStore/Mapper.php

@@ -30,6 +30,10 @@ public function getBucket(int $numBuckets = 64): string {
 			? (int)$this->config['arguments']['min_bucket']
 			: 0;
 
+		if ($minBucket === $numBuckets) {
+			return (string)$minBucket;
+		}
+
 		$hash = md5($this->user->getUID());
 		$num = hexdec(substr($hash, 0, 4));
 		return (string)(($num % ($numBuckets - $minBucket)) + $minBucket);

tests/lib/Files/ObjectStore/MapperTest.php

@@ -24,6 +24,7 @@ protected function setUp(): void {
 	public static function dataGetBucket(): array {
 		return [
 			['user', 64, 0, '17'],
+			['user', 64, 64, '64'],
 			['USER', 64, 0, '0'],
 			['bc0e8b52-a66c-1035-90c6-d9663bda9e3f', 64, 0, '56'],
 			['user', 8, 0, '1'],
@@ -41,8 +42,7 @@ public static function dataGetBucket(): array {
 	#[\PHPUnit\Framework\Attributes\DataProvider('dataGetBucket')]
 	public function testGetBucket($username, $numBuckets, $bucketShift, $expectedBucket): void {
 		$mapper = new Mapper($this->user, ['arguments' => ['min_bucket' => $bucketShift]]);
-		$this->user->expects($this->once())
-			->method('getUID')
+		$this->user->method('getUID')
 			->willReturn($username);
 
 		$result = $mapper->getBucket($numBuckets);