tests: add comprehensive tests for Image utility

Author: CodeWithKyrian

src/Transformers.php

@@ -17,9 +17,9 @@ class Transformers
 
     protected static ?string $authToken = null;
 
-    protected static ?string $userAgent = 'transformers-php/0.4.0';
+    protected static ?string $userAgent = 'transformers-php/0.5.3';
 
-    protected static ImageDriver $imageDriver;
+    protected static ImageDriver $imageDriver = ImageDriver::VIPS;
 
 
     /**
@@ -155,4 +155,4 @@ public static function getImageDriver(): ?ImageDriver
 
         return self::$imageDriver;
     }
-}
+}

tests/Utils/ImageTest.php

@@ -0,0 +1,75 @@
+<?php
+
+use Codewithkyrian\Transformers\Utils\Image;
+use Codewithkyrian\Transformers\Utils\ImageDriver;
+use Codewithkyrian\Transformers\Transformers;
+use Codewithkyrian\Transformers\Tensor\Tensor;
+
+describe('VIPS Driver', function () {
+    beforeEach(function () {
+        Transformers::setup()->setImageDriver(ImageDriver::VIPS);
+    });
+
+    it('can read and get dimensions', function () {
+        $img = Image::read('tests/fixtures/images/sample.jpg');
+        expect($img->width())->toBeInt()->and($img->height())->toBeInt();
+        expect($img->size())->toHaveCount(2);
+    });
+
+    it('can resize and thumbnail', function () {
+        $img = Image::read('tests/fixtures/images/sample.jpg');
+        $resized = $img->resize(64, 32);
+        expect($resized->width())->toBe(64);
+        expect($resized->height())->toBe(32);
+        $thumb = $img->thumbnail(32, 32);
+        expect($thumb->width())->toBeLessThanOrEqual(32);
+        expect($thumb->height())->toBeLessThanOrEqual(32);
+    });
+
+    it('can grayscale, rgb, and rgba', function () {
+        $img = Image::read('tests/fixtures/images/sample.jpg');
+        $gray = $img->grayscale();
+        expect($gray->channels)->toBe(1);
+        $rgb = $img->rgb();
+        expect($rgb->channels)->toBe(3);
+        $rgba = $img->rgba();
+        expect($rgba->channels)->toBe(4);
+    });
+
+    it('can center crop and crop', function () {
+        $img = Image::read('tests/fixtures/images/sample.jpg');
+        $center = $img->centerCrop(32, 32);
+        expect($center->width())->toBe(32);
+        expect($center->height())->toBe(32);
+        $crop = $img->crop(0, 0, 15, 15);
+        expect($crop->width())->toBe(16);
+        expect($crop->height())->toBe(16);
+    });
+
+    it('can pad and invert', function () {
+        $img = Image::read('tests/fixtures/images/sample.jpg');
+        $padded = $img->pad(2, 2, 2, 2);
+        expect($padded->width())->toBe($img->width() + 4);
+        expect($padded->height())->toBe($img->height() + 4);
+        $inverted = $img->invert();
+        expect($inverted)->toBeInstanceOf(Image::class);
+    });
+
+    it('can convert to and from tensor', function () {
+        $img = Image::read('tests/fixtures/images/sample.jpg');
+        $tensor = $img->toTensor('CHW');
+        expect($tensor)->toBeInstanceOf(Tensor::class);
+        $img2 = Image::fromTensor($tensor, 'CHW');
+        expect($img2->width())->toBe($img->width());
+        expect($img2->height())->toBe($img->height());
+        expect($img2->channels)->toBe($img->channels);
+    });
+
+    it('can save an image', function () {
+        $img = Image::read('tests/fixtures/images/sample.jpg');
+        $tmp = tempnam(sys_get_temp_dir(), 'imgtest_') . '.jpg';
+        $img->save($tmp);
+        expect(file_exists($tmp))->toBeTrue();
+        unlink($tmp);
+    });
+});