From e379b45caaff2a70be6aff85b0e3e4e6fdbd2490 Mon Sep 17 00:00:00 2001
From: Robert Scott <code@humanleg.org.uk>
Date: Thu, 3 Feb 2022 21:46:28 +0000
Subject: [PATCH] graphicsmagick: add passthru regression test for issue
 #157920

use a pdf from the documentation of `graphviz` as it's already a
dependency
---
 .../graphics/graphicsmagick/default.nix           | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/graphics/graphicsmagick/default.nix b/pkgs/applications/graphics/graphicsmagick/default.nix
index 4c83802d7ad8..f92f3686611f 100644
--- a/pkgs/applications/graphics/graphicsmagick/default.nix
+++ b/pkgs/applications/graphics/graphicsmagick/default.nix
@@ -1,6 +1,9 @@
 { lib, stdenv, fetchurl, bzip2, freetype, graphviz, ghostscript
 , libjpeg, libpng, libtiff, libxml2, zlib, libtool, xz, libX11
-, libwebp, quantumdepth ? 8, fixDarwinDylibNames, nukeReferences }:
+, libwebp, quantumdepth ? 8, fixDarwinDylibNames, nukeReferences
+, runCommand
+, graphicsmagick  # for passthru.tests
+}:
 
 stdenv.mkDerivation rec {
   pname = "graphicsmagick";
@@ -40,6 +43,16 @@ stdenv.mkDerivation rec {
     sed -i 's/-ltiff.*'\'/\'/ $out/bin/*
   '';
 
+  passthru = {
+    tests = {
+      issue-157920 = runCommand "issue-157920-regression-test" {
+        buildInputs = [ graphicsmagick ];
+      } ''
+        gm convert ${graphviz}/share/graphviz/doc/pdf/neatoguide.pdf jpg:$out
+      '';
+    };
+  };
+
   meta = {
     homepage = "http://www.graphicsmagick.org";
     description = "Swiss army knife of image processing";