[gtk/modern-testsuite] testuite: Add a test for bottom-right border render failure

[Benjamin Otte <otte src gnome org>]

commit 596f437892ba1ffadda2fbbc32e2b145f7cde1c6
Author: Benjamin Otte <otte redhat com>
Date:   Thu Sep 16 02:28:56 2021 +0200

    testuite: Add a test for bottom-right border render failure
    
    When a border node is painted with just the bottom and right sides, the
    bottom right corner doesn't get drawn.

 testsuite/gsk/compare/border-bottom-right.node |   5 +++++
 testsuite/gsk/compare/border-bottom-right.png  | Bin 0 -> 103 bytes
 testsuite/gsk/meson.build                      |   1 +
 3 files changed, 6 insertions(+)
---
diff --git a/testsuite/gsk/compare/border-bottom-right.node b/testsuite/gsk/compare/border-bottom-right.node
new file mode 100644
index 0000000000..d71790a4f7
--- /dev/null
+++ b/testsuite/gsk/compare/border-bottom-right.node
@@ -0,0 +1,5 @@
+border {
+  colors: red;
+  outline: 0 0 20 20;
+  widths: 0 10 10 0;
+}
diff --git a/testsuite/gsk/compare/border-bottom-right.png b/testsuite/gsk/compare/border-bottom-right.png
new file mode 100644
index 0000000000..579f7efeb2
Binary files /dev/null and b/testsuite/gsk/compare/border-bottom-right.png differ
diff --git a/testsuite/gsk/meson.build b/testsuite/gsk/meson.build
index 5ba5f73520..a857646752 100644
--- a/testsuite/gsk/meson.build
+++ b/testsuite/gsk/meson.build
@@ -23,6 +23,7 @@ compare_render_tests = [
   'blend-difference',
   'blend-invisible-child',
   'blend-normal',
+  'border-bottom-right',
   'borders-rotated',
   'borders-scaled',
   'clip-coordinates-2d',