chore: minor tests fix

- Source should have been provided as null when the bucket and key are already provided as part of the download request args.
- When checksum type will be resolved to FULL_OBJECT the only supported algorithms are CRC family.

Author: yenfryherrerafeliz

src/S3/S3Transfer/S3TransferManager.php

@@ -476,9 +476,9 @@ public function downloadDirectory(
             $promises[] = $this->downloadFile(
                 new DownloadFileRequest(
                     destination: $destinationFile,
-                    failsWhenDestinationExists: ['fails_when_destination_exists'] ?? false,
+                    failsWhenDestinationExists: $config['fails_when_destination_exists'] ?? false,
                     downloadRequest: new DownloadRequest(
-                        source: $sourceBucket,
+                        source: null, // Source has been provided in the request args
                         downloadRequestArgs: $requestArgs,
                         config: [
                             'target_part_size_bytes' => $config['target_part_size_bytes'] ?? 0,

tests/S3/S3Transfer/S3TransferManagerTest.php

@@ -483,12 +483,6 @@ public function testUploadUsesCustomChecksumAlgorithm(
     public function uploadUsesCustomChecksumAlgorithmProvider(): array
     {
         return [
-            'checksum_sha256' => [
-                'checksum_algorithm' => 'sha256',
-            ],
-            'checksum_sha1' => [
-                'checksum_algorithm' => 'sha1',
-            ],
             'checksum_crc32c' => [
                 'checksum_algorithm' => 'crc32c',
             ],
@@ -2272,7 +2266,11 @@ public function testDownloadDirectoryUsesFailurePolicy(): void
             )->wait();
             $this->assertTrue($called);
         } finally {
-            unlink($destinationDirectory . '/file1.txt');
+            $file = $destinationDirectory . '/file1.txt';
+            if (file_exists($file)) {
+                unlink($file);
+            }
+
             rmdir($destinationDirectory);
         }
     }