Update additional postprocessing code

tests/Unit/AdditionalProcessing/ArchiveExtractionServiceTest.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace Tests\Unit\AdditionalProcessing;
+
+use App\Services\AdditionalProcessing\ArchiveExtractionService;
+use dariusiii\rarinfo\ArchiveInfo;
+use dariusiii\rarinfo\Par2Info;
+use Mockery;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+
+class ArchiveExtractionServiceTest extends TestCase
+{
+    use CreatesProcessingConfiguration;
+
+    protected function tearDown(): void
+    {
+        Mockery::close();
+        parent::tearDown();
+    }
+
+    #[Test]
+    public function it_returns_file_data_directly_from_archive_info_when_available(): void
+    {
+        $archiveInfo = Mockery::mock(ArchiveInfo::class);
+        $archiveInfo->shouldReceive('setData')->once()->with('ARCHIVE', true)->andReturn(true);
+        $archiveInfo->shouldReceive('getFileData')->once()->with('cover.jpg')->andReturn('IMAGE-DATA');
+
+        $service = new ArchiveExtractionService(
+            $this->makeConfig(),
+            $archiveInfo,
+            Mockery::mock(Par2Info::class)
+        );
+
+        $this->assertSame('IMAGE-DATA', $service->extractSpecificFile('ARCHIVE', 'cover.jpg', sys_get_temp_dir().'/'));
+    }
+
+    #[Test]
+    public function it_detects_common_standalone_video_signatures(): void
+    {
+        $service = new ArchiveExtractionService(
+            $this->makeConfig(),
+            Mockery::mock(ArchiveInfo::class),
+            Mockery::mock(Par2Info::class)
+        );
+
+        $avi = 'RIFF'.str_repeat("\0", 4).'AVI '.str_repeat("\0", 16);
+        $mp4 = str_repeat("\0", 4).'ftypisom'.str_repeat("\0", 16);
+
+        $this->assertSame('avi', $service->detectStandaloneVideo($avi));
+        $this->assertSame('mp4', $service->detectStandaloneVideo($mp4));
+        $this->assertNull($service->detectStandaloneVideo('tiny'));
+    }
+}