add file test resource

src/Testing/ClientFake.php

@@ -12,6 +12,7 @@
 use Gemini\Testing\Requests\TestRequest;
 use Gemini\Testing\Resources\ChatSessionTestResource;
 use Gemini\Testing\Resources\EmbeddingModelTestResource;
+use Gemini\Testing\Resources\FilesTestResource;
 use Gemini\Testing\Resources\GenerativeModelTestResource;
 use Gemini\Testing\Resources\ModelTestResource;
 use PHPUnit\Framework\Assert as PHPUnit;
@@ -245,4 +246,9 @@ public function chat(ModelType|string $model = ModelType::GEMINI_PRO): ChatSessi
     {
         return new ChatSessionTestResource(fake: $this, model: $model);
     }
+
+    public function files(): FilesTestResource
+    {
+        return new FilesTestResource(fake: $this);
+    }
 }

src/Testing/Resources/FilesTestResource.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Gemini\Testing\Resources;
+
+use Gemini\Contracts\Resources\FilesContract;
+use Gemini\Enums\MimeType;
+use Gemini\Resources\Files;
+use Gemini\Responses\Files\MetadataResponse;
+use Gemini\Testing\Resources\Concerns\Testable;
+
+final class FilesTestResource implements FilesContract
+{
+    use Testable;
+
+    protected function resource(): string
+    {
+        return Files::class;
+    }
+
+    public function upload(string $filename, ?MimeType $mimeType = null, ?string $displayName = null): MetadataResponse
+    {
+        return $this->record(method: __FUNCTION__, args: func_get_args());
+    }
+
+    public function metadataGet(string $nameOrUri): MetadataResponse
+    {
+        return $this->record(method: __FUNCTION__, args: func_get_args());
+    }
+}

tests/Testing/Resources/FilesTestResource.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+use Gemini\Enums\MimeType;
+use Gemini\Resources\Files;
+use Gemini\Responses\Files\MetadataResponse;
+use Gemini\Testing\ClientFake;
+
+it('records a upload request', function () {
+    $fake = new ClientFake([
+        MetadataResponse::fake(),
+    ]);
+
+    $fake->files()->upload('filename.pdf', MimeType::APPLICATION_PDF, 'display name');
+
+    $fake->assertSent(resource: Files::class, callback: function ($method, $parameters) {
+        return $method === 'upload' &&
+            $parameters[0] === 'filename.pdf' &&
+            $parameters[1] === MimeType::APPLICATION_PDF &&
+            $parameters[2] === 'display name';
+    });
+});
+
+it('records a metadata get request', function () {
+    $fake = new ClientFake([
+        MetadataResponse::fake(),
+    ]);
+
+    $fake->files()->metadataGet('filename.pdf');
+
+    $fake->assertSent(resource: Files::class, callback: function ($method, $parameters) {
+        return $method === 'metadataGet' &&
+            $parameters[0] === 'filename.pdf';
+    });
+});