From a517b8ba00c7783994ada714ce382f02e6f36f4b Mon Sep 17 00:00:00 2001
From: Chris Gaffney <gaffneyc@gmail.com>
Date: Tue, 17 Dec 2024 12:29:21 -0500
Subject: [PATCH] Support test matchers with only Vips

This adds support for using the test matchers when neither MiniMagick or
Magick are installed.
---
 lib/carrierwave/test/matchers.rb | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/lib/carrierwave/test/matchers.rb b/lib/carrierwave/test/matchers.rb
index cf4057667..e2bdb24dd 100644
--- a/lib/carrierwave/test/matchers.rb
+++ b/lib/carrierwave/test/matchers.rb
@@ -336,6 +336,8 @@ class ImageLoader # :nodoc:
         def self.load_image(filename)
           if defined? ::MiniMagick
             MiniMagickWrapper.new(filename)
+          elsif defined? ::Vips
+            VipsWrapper.new(filename)
           else
             unless defined? ::Magick
               begin
@@ -393,6 +395,28 @@ def initialize(filename)
         end
       end
 
+      class VipsWrapper # :nodoc:
+        attr_reader :image
+
+        def width
+          image.width
+        end
+
+        def height
+          image.height
+        end
+
+        def format
+          # This returns the name of the vips loader (e.g. pngload) as Vips
+          # doesn't do content detection.
+          image.get("vips-loader").delete_suffix("load")
+        end
+
+        def initialize(filename)
+          @image = ::Vips::Image.new_from_file(filename)
+        end
+      end
+
     end # Matchers
   end # Test
 end # CarrierWave