moving in the tests I had from the other app

src/ImageClient.php

@@ -28,7 +28,8 @@ public function images($phrase): ImagesResponseDto|\Exception
             throw new \Exception('Error with response');
         }
 
-        $dto = new ImagesResponseDto($response->json());
+        $data = $response->json();
+        $dto = new ImagesResponseDto($data);
 
         return $dto;
     }

tests/ImageClientMockTest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Alnutile\LaravelChatgpt\Tests;
+
+use Alnutile\LaravelChatgpt\DTOs\ImageResponseDto;
+use Alnutile\LaravelChatgpt\DTOs\ImagesResponseDto;
+use Alnutile\LaravelChatgpt\ImageClientMock;
+use Illuminate\Support\Facades\File;
+
+class ImageClientMockTest extends TestCase
+{
+    public function test_mock()
+    {
+        $data = <<<'EOD'
+{
+    "created": 1674065330,
+    "data": [
+        {
+            "url": "https://oaidalleapiprodscus.blob.core.windows.net/private/org-ClL1biAi0m1pC2J2IV5C22TQ/user-i08oJb4T3Lhnsh2yJsoErWJ4/img-5CGVUOpH2HsRdB7zVWeJSufj.png?st=2023-01-18T17%3A08%3A50Z&se=2023-01-18T19%3A08%3A50Z&sp=r&sv=2021-08-06&sr=b&rscd=inline&rsct=image/png&skoid=6aaadede-4fb3-4698-a8f6-684d7786b067&sktid=a48cca56-e6da-484e-a814-9c849652bcb3&skt=2023-01-18T15%3A37%3A27Z&ske=2023-01-19T15%3A37%3A27Z&sks=b&skv=2021-08-06&sig=1guBf9z2zX%2BUNiBGs7IT61YmKcmv7%2BHKL1zHxzNKcQc%3D"
+        },
+        {
+            "url": "https://oaidalleapiprodscus.blob.core.windows.net/private/org-ClL1biAi0m1pC2J2IV5C22TQ/user-i08oJb4T3Lhnsh2yJsoErWJ4/img-GkcQxoVIH1BWlml3uMJjxlNt.png?st=2023-01-18T17%3A08%3A50Z&se=2023-01-18T19%3A08%3A50Z&sp=r&sv=2021-08-06&sr=b&rscd=inline&rsct=image/png&skoid=6aaadede-4fb3-4698-a8f6-684d7786b067&sktid=a48cca56-e6da-484e-a814-9c849652bcb3&skt=2023-01-18T15%3A37%3A27Z&ske=2023-01-19T15%3A37%3A27Z&sks=b&skv=2021-08-06&sig=o9wlRNNJZW4GPBJo74gKn%2BXX8WSq47DL9QSf/agD9Ws%3D"
+        }
+    ]
+}
+EOD;
+
+        File::shouldReceive('get')->andReturn($data);
+
+        $results = (new ImageClientMock())->images('foo');
+
+        $this->assertInstanceOf(ImagesResponseDto::class, $results);
+        $this->assertInstanceOf(ImageResponseDto::class,
+            $results->images[0]);
+    }
+}

tests/ImageClientTest.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Alnutile\LaravelChatgpt\Tests;
+
+use Alnutile\LaravelChatgpt\DTOs\ImagesResponseDto;
+use Alnutile\LaravelChatgpt\ImageClient;
+use Illuminate\Support\Facades\File;
+use Illuminate\Support\Facades\Http;
+
+class ImageClientTest extends TestCase
+{
+    public function test_client()
+    {
+        $data = File::get(__DIR__.'/fixtures/image_response.json');
+        $data = json_decode($data, true);
+
+        Http::fake(
+            [
+                'api.openai.com/*' => Http::response($data, 200),
+            ]
+        );
+
+        $results = (new ImageClient())->images('Bob Belcher');
+        $this->assertNotEmpty($results);
+        $this->assertInstanceOf(ImagesResponseDto::class, $results);
+        Http::assertSentCount(1);
+    }
+}