WebKit export of https://bugs.webkit.org/show_bug.cgi?id=224719 (#28562)
diff --git a/css/css-backgrounds/parsing/background-image-computed.sub.html b/css/css-backgrounds/parsing/background-image-computed.sub.html
index 8ee18e2..cf3c065 100644
--- a/css/css-backgrounds/parsing/background-image-computed.sub.html
+++ b/css/css-backgrounds/parsing/background-image-computed.sub.html
@@ -54,6 +54,10 @@
test_computed_value('background-image', 'conic-gradient(from 45deg at center, red, blue)', 'conic-gradient(from 45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 45deg at 50%, red, blue)', 'conic-gradient(from 45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
test_computed_value('background-image', 'conic-gradient(from 45deg at 10px 10px, red, blue)', 'conic-gradient(from 45deg at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');
+test_computed_value('background-image', 'conic-gradient(from -45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
+test_computed_value('background-image', 'conic-gradient(from -45deg at center, red, blue)', 'conic-gradient(from -45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
+test_computed_value('background-image', 'conic-gradient(from -45deg at 50%, red, blue)', 'conic-gradient(from -45deg, rgb(255, 0, 0), rgb(0, 0, 255))');
+test_computed_value('background-image', 'conic-gradient(from -45deg at 10px 10px, red, blue)', 'conic-gradient(from -45deg at 10px 10px, rgb(255, 0, 0), rgb(0, 0, 255))');
</script>
</body>
</html>
