Add Image::isType method

Author: natanfelles

src/Image.php

@@ -128,11 +128,11 @@ public function setInstance(GdImage $instance) : static
     public function getQuality() : ?int
     {
         if ($this->quality === null) {
-            if ($this->getType() === \IMAGETYPE_PNG) {
+            if ($this->isType(\IMAGETYPE_PNG)) {
                 $this->quality = 6;
-            } elseif ($this->getType() === \IMAGETYPE_JPEG) {
+            } elseif ($this->isType(\IMAGETYPE_JPEG)) {
                 $this->quality = 75;
-            } elseif ($this->getType() === \IMAGETYPE_AVIF) {
+            } elseif ($this->isType(\IMAGETYPE_AVIF)) {
                 $this->quality = 52;
             }
         }
@@ -154,22 +154,22 @@ public function getQuality() : ?int
      */
     public function setQuality(int $quality) : static
     {
-        if ($this->getType() === \IMAGETYPE_GIF) {
+        if ($this->isType(\IMAGETYPE_GIF)) {
             throw new LogicException(
                 'GIF images does not receive a quality value'
             );
         }
-        if ($this->getType() === \IMAGETYPE_PNG && ($quality < 0 || $quality > 9)) {
+        if ($this->isType(\IMAGETYPE_PNG) && ($quality < 0 || $quality > 9)) {
             throw new InvalidArgumentException(
                 'PNG images must receive a quality value between 0 and 9, ' . $quality . ' given'
             );
         }
-        if ($this->getType() === \IMAGETYPE_JPEG && ($quality < 0 || $quality > 100)) {
+        if ($this->isType(\IMAGETYPE_JPEG) && ($quality < 0 || $quality > 100)) {
             throw new InvalidArgumentException(
                 'JPEG images must receive a quality value between 0 and 100, ' . $quality . ' given'
             );
         }
-        if ($this->getType() === \IMAGETYPE_AVIF && ($quality < 0 || $quality > 100)) {
+        if ($this->isType(\IMAGETYPE_AVIF) && ($quality < 0 || $quality > 100)) {
             throw new InvalidArgumentException(
                 'AVIF images must receive a quality value between 0 and 100, ' . $quality . ' given'
             );
@@ -286,6 +286,11 @@ protected function setType(int $type) : static
         return $this;
     }
 
+    public function isType(int $type) : bool
+    {
+        return $this->getType() === $type;
+    }
+
     /**
      * Creates a new Image based in the current instance.
      *

tests/ImageTest.php

@@ -316,9 +316,17 @@ public function testCreate() : void
     {
         $filename = \sys_get_temp_dir() . '/aplus-image-test';
         $this->image->create('png', $filename);
+        $img = new Image($filename);
+        self::assertTrue($img->isType(\IMAGETYPE_PNG));
         $this->image->create('jpeg', $filename);
+        $img = new Image($filename);
+        self::assertTrue($img->isType(\IMAGETYPE_JPEG));
         $this->image->create('gif', $filename);
+        $img = new Image($filename);
+        self::assertTrue($img->isType(\IMAGETYPE_GIF));
         $this->image->create('avif', $filename);
+        $img = new Image($filename);
+        self::assertTrue($img->isType(\IMAGETYPE_AVIF));
         \unlink($filename);
         $this->expectException(RuntimeException::class);
         $this->expectExceptionMessage('Image could not be created');