Initial

Takes in a file, process it and output a new file with additional columns.

vendor/maennchen/zipstream-php/test/Zip64/DataDescriptorTest.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ZipStream\Test\Zip64;
+
+use PHPUnit\Framework\TestCase;
+use ZipStream\Zip64\DataDescriptor;
+
+class DataDescriptorTest extends TestCase
+{
+    public function testSerializesCorrectly(): void
+    {
+        $descriptor = DataDescriptor::generate(
+            crc32UncompressedData: 0x11111111,
+            compressedSize: (0x77777777 << 32) +  0x66666666,
+            uncompressedSize: (0x99999999 << 32) + 0x88888888,
+        );
+
+        $this->assertSame(
+            bin2hex($descriptor),
+            '504b0708' // 4 bytes; Optional data descriptor signature = 0x08074b50
+            . '11111111' // 4 bytes; CRC-32 of uncompressed data
+            . '6666666677777777' // 8 bytes; Compressed size
+            . '8888888899999999' // 8 bytes; Uncompressed size
+        );
+    }
+}