feat: set default checksum algorithm to md5

Author: tinect

src/BunnyCDNAdapter.php

@@ -494,7 +494,8 @@ public function fileExists(string $path): bool
      */
     public function checksum(string $path, Config $config): string
     {
-        $algo = $config->get('checksum_algo', 'sha256');
+        // for compatibility reasons, the default checksum algorithm is md5
+        $algo = $config->get('checksum_algo', 'md5');
 
         if ($algo !== 'sha256') {
             return $this->calculateChecksumFromStream($path, $config);

tests/FlysystemAdapterTest.php

@@ -226,12 +226,12 @@ public function get_checksum(): void
 
         $this->assertSame(
             '3858f62230ac3c915f300c664312c63f',
-            $adapter->checksum('path.txt', new Config(['checksum_algo' => 'md5']))
+            $adapter->checksum('path.txt', new Config())
         );
 
         $this->assertSame(
             'c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2',
-            $adapter->checksum('path.txt', new Config())
+            $adapter->checksum('path.txt', new Config(['checksum_algo' => 'sha256']))
         );
     }
 

tests/PrefixTest.php

@@ -112,12 +112,12 @@ public function get_checksum(): void
 
         $this->assertSame(
             '3858f62230ac3c915f300c664312c63f',
-            $adapter->checksum('path.txt', new Config(['checksum_algo' => 'md5']))
+            $adapter->checksum('path.txt', new Config())
         );
 
         $this->assertSame(
             'c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2',
-            $adapter->checksum('path.txt', new Config())
+            $adapter->checksum('path.txt', new Config(['checksum_algo' => 'sha256']))
         );
     }