From 56a064d8679e83106a72ab4ef84c399d54bc1f2b Mon Sep 17 00:00:00 2001
From: Oliver Vogel <oliver@olivervogel.com>
Date: Sat, 27 Jan 2024 11:07:06 +0100
Subject: [PATCH] Add tests for Image::blendTransparency()

---
 tests/Drivers/Gd/ImageTest.php      | 9 +++++++++
 tests/Drivers/Imagick/ImageTest.php | 9 +++++++++
 2 files changed, 18 insertions(+)

diff --git a/tests/Drivers/Gd/ImageTest.php b/tests/Drivers/Gd/ImageTest.php
index fc64489c..fd4bc6eb 100644
--- a/tests/Drivers/Gd/ImageTest.php
+++ b/tests/Drivers/Gd/ImageTest.php
@@ -276,6 +276,15 @@ class ImageTest extends TestCase
         $this->assertColor(1, 2, 3, 4, $image->blendingColor());
     }
 
+    public function testBlendTransparency(): void
+    {
+        $image = $this->readTestImage('gradient.gif');
+        $this->assertColor(0, 0, 0, 0, $image->pickColor(1, 0));
+        $result = $image->blendTransparency('ff5500');
+        $this->assertColor(255, 85, 0, 255, $image->pickColor(1, 0));
+        $this->assertColor(255, 85, 0, 255, $result->pickColor(1, 0));
+    }
+
     public function testToJpeg(): void
     {
         $this->assertMediaType('image/jpeg', (string) $this->image->toJpeg());
diff --git a/tests/Drivers/Imagick/ImageTest.php b/tests/Drivers/Imagick/ImageTest.php
index 55a85ca6..b121779f 100644
--- a/tests/Drivers/Imagick/ImageTest.php
+++ b/tests/Drivers/Imagick/ImageTest.php
@@ -269,6 +269,15 @@ class ImageTest extends TestCase
         $this->assertColor(1, 2, 3, 4, $image->blendingColor());
     }
 
+    public function testBlendTransparency(): void
+    {
+        $image = $this->readTestImage('gradient.gif');
+        $this->assertColor(0, 0, 0, 0, $image->pickColor(1, 0));
+        $result = $image->blendTransparency('ff5500');
+        $this->assertColor(255, 85, 0, 255, $image->pickColor(1, 0));
+        $this->assertColor(255, 85, 0, 255, $result->pickColor(1, 0));
+    }
+
     public function testToJpeg(): void
     {
         $this->assertMediaType('image/jpeg', (string) $this->image->toJpeg());