FEATURE: Add basic test for scalable sources

Tests/Unit/BaseTestCase.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Sitegeist\Kaleidoscope\Tests\Unit;
+
+use PHPUnit\Framework\TestCase;
+
+class BaseTestCase extends TestCase
+{
+    /**
+     * Injects $dependency into property $name of $target
+     *
+     * This is a convenience method for setting a protected or private property in
+     * a test subject for the purpose of injecting a dependency.
+     *
+     * @param object $target The instance which needs the dependency
+     * @param string $name Name of the property to be injected
+     * @param mixed $dependency The dependency to inject – usually an object but can also be any other type
+     * @return void
+     * @throws \RuntimeException
+     * @throws \InvalidArgumentException
+     */
+    protected function inject($target, $name, $dependency)
+    {
+        if (!is_object($target)) {
+            throw new \InvalidArgumentException('Wrong type for argument $target, must be object.');
+        }
+
+        $objectReflection = new \ReflectionObject($target);
+        $methodNamePart = strtoupper($name[0]) . substr($name, 1);
+        if ($objectReflection->hasMethod('set' . $methodNamePart)) {
+            $methodName = 'set' . $methodNamePart;
+            $target->$methodName($dependency);
+        } elseif ($objectReflection->hasMethod('inject' . $methodNamePart)) {
+            $methodName = 'inject' . $methodNamePart;
+            $target->$methodName($dependency);
+        } elseif ($objectReflection->hasProperty($name)) {
+            $property = $objectReflection->getProperty($name);
+            $property->setAccessible(true);
+            $property->setValue($target, $dependency);
+        } else {
+            throw new \RuntimeException('Could not inject ' . $name . ' into object of type ' . get_class($target));
+        }
+    }
+}

Tests/Unit/Domain/AbstractScalableImageSourceTest.php

@@ -0,0 +1,86 @@
+<?php
+declare(strict_types=1);
+
+namespace Sitegeist\Kaleidoscope\Tests\Unit\Domain;
+
+use Sitegeist\Kaleidoscope\Domain\DummyImageSource;
+use Sitegeist\Kaleidoscope\Tests\Unit\BaseTestCase;
+
+class AbstractScalableImageSourceTest extends BaseTestCase
+{
+    /**
+     * @test
+     */
+    public function aspectRatioIsHonored()
+    {
+        $dummy = new DummyImageSource('https://example.com', 'Test', 'Test', 400, 400, '999', 'fff', 'Test');
+        $copy = $dummy->withWidth(200, true);
+        $this->assertEquals(200, $copy->height());
+    }
+
+    /**
+     * @test
+     */
+    public function srcsetIsGenerated()
+    {
+        $dummy = new DummyImageSource('https://example.com', 'Test', 'Test', 400, 400, '999', 'fff', 'Test');
+        $this->assertEquals(
+            'https://example.com?w=200&h=200&bg=999&fg=fff&t=Test 200w, https://example.com?w=400&h=400&bg=999&fg=fff&t=Test 400w',
+            $dummy->srcset('200w, 400w')
+        );
+    }
+
+    /**
+     * @test
+     */
+    public function srcsetWithWidthAdheresToDefinition()
+    {
+        $dummy = new DummyImageSource('https://example.com', 'Test', 'Test', 400, 400, '999', 'fff', 'Test');
+        $this->assertEquals(
+            'https://example.com?w=200&h=200&bg=999&fg=fff&t=Test 200w, https://example.com?w=400&h=400&bg=999&fg=fff&t=Test 400w, https://example.com?w=600&h=600&bg=999&fg=fff&t=Test 600w',
+            $dummy->srcset('200w, 400w, 600w')
+        );
+    }
+
+    /**
+     * If the actual image is smaller than the requested size, then the image should be returned in its original size.
+     * @test
+     * @todo
+     */
+    #public function srcsetWithWidthShouldOutputOnlyAvailableSources()
+    #{
+    #    $dummy = new DummyImageSource('https://example.com', 'Test', 'Test', 500, 500, '999', 'fff', 'Test');
+    #    $this->assertEquals(
+    #        'https://example.com?w=200&h=200&bg=999&fg=fff&t=Test 200w, https://example.com?w=400&h=400&bg=999&fg=fff&t=Test 400w, https://example.com?w=500&h=500&bg=999&fg=fff&t=Test 500w',
+    #        $dummy->srcset('200w, 400w, 600w')
+    #    );
+    #}
+
+    /**
+     * @test
+     */
+    public function srcsetWithRatioAdheresToDefinition()
+    {
+        $dummy = new DummyImageSource('https://example.com', 'Test', 'Test', 400, 200, '999', 'fff', 'Test');
+        $copy = $dummy->withHeight(50, true);
+        $this->assertEquals(
+            'https://example.com?w=100&h=50&bg=999&fg=fff&t=Test 1x, https://example.com?w=200&h=100&bg=999&fg=fff&t=Test 2x, https://example.com?w=300&h=150&bg=999&fg=fff&t=Test 3x',
+            $copy->srcset('1x, 2x, 3x')
+        );
+    }
+
+    /**
+     * If the actual image is smaller than the requested size, then the image should be returned in its original size.
+     * @test
+     * @todo
+     */
+    #public function srcsetWithRatioShouldOutputOnlyAvailableSources()
+    #{
+    #    $dummy = new DummyImageSource('https://example.com', 'Test', 'Test', 30, 12, '999', 'fff', 'Test');
+    #    $copy = $dummy->withWidth(20, true);
+    #    $this->assertEquals(
+    #        'https://example.com?w=20&h=8&bg=999&fg=fff&t=Test 1x, https://example.com?w=30&h=12&bg=999&fg=fff&t=Test 1.5x',
+    #        $copy->srcset('1x, 2x')
+    #    );
+    #}
+}

composer.json

@@ -10,6 +10,7 @@
         "neos/imagine": "*"
     },
     "require-dev": {
+        "phpunit/phpunit": "^9.5",
         "phpstan/phpstan": "^1.8",
         "squizlabs/php_codesniffer": "^3.7"
     },
@@ -18,6 +19,11 @@
             "Sitegeist\\Kaleidoscope\\": "Classes/"
         }
     },
+    "autoload-dev": {
+        "psr-4": {
+            "Sitegeist\\Kaleidoscope\\Tests\\": "Tests/"
+        }
+    },
     "extra": {
         "neos": {
             "package-key": "Sitegeist.Kaleidoscope"
@@ -27,8 +33,9 @@
         "fix:style": "phpcbf --colors --standard=PSR12 Classes",
         "test:style": "phpcs --colors -n --standard=PSR12 Classes",
         "test:stan": "phpstan analyse Classes",
+        "test:unit": "phpunit Tests/Unit",
         "cc": "phpstan clear cache",
-        "test": ["composer install", "composer test:style" , "composer test:stan"]
+        "test": ["composer install", "composer test:style" , "composer test:stan", "composer test:unit"]
     },
     "config": {
         "allow-plugins": {