Fixed pad problem when used without color specified. Fixes #222

src/Image.php

@@ -120,7 +120,7 @@ public function resizeAndOrCrop(?int $width, ?int $height, array $options = []):
         if (isset($options['quadrant'])) {
             return $this->cropQuadrant($width, $height, $options);
         }
-        if (array_key_exists('pad', $options)) {
+        if (isset($options['pad']) || in_array('pad', $options)) {
             $this->pad($width, $height, $options);
         }
         if (array_key_exists('resize', $options) || !$width || !$height) {
@@ -207,10 +207,8 @@ public function pad(?int $width, ?int $height, array $options): self
         if (!$height || !$width) {
             throw new Exception('Croppa: Pad option needs width and height');
         }
-        if (!isset($options['pad'])) {
-            throw new Exception('Croppa: No pad color specified');
-        }
-        $rgbArray = $options['pad'] ?: [255, 255, 255];
+
+        $rgbArray = $options['pad'] ?? [255, 255, 255];
         $color = sprintf("#%02x%02x%02x", $rgbArray[0], $rgbArray[1], $rgbArray[2]);
 
         if (!$this->upsize) {

tests/TestResizing.php

@@ -104,6 +104,17 @@ public function testWidthAndHeightPad()
         $this->assertEquals('200x200', $size[0].'x'.$size[1]);
     }
 
+    public function testWidthAndHeightAndPadWithoutColor()
+    {
+        $image = new Image($this->src, $this->options);
+        $imageString = $image->process(200, 200, ['pad'])->get();
+        $size = getimagesizefromstring($imageString);
+        $firstPixelColor = ImageManager::gd()->read($imageString)->pickColor(1, 1)->toHex();
+
+        $this->assertEquals('ffffff', $firstPixelColor);
+        $this->assertEquals('200x200', $size[0].'x'.$size[1]);
+    }
+
     public function testWidthAndHeightTrim()
     {
         $image = new Image($this->src, $this->options);