test-paint: Add variable font tests
These needs freetype master to work.
diff --git a/test/api/results/testvf-154 b/test/api/results/testvf-154
new file mode 100644
index 0000000..03eb4bc
--- /dev/null
+++ b/test/api/results/testvf-154
@@ -0,0 +1,30 @@
+# random seed: R02S3997a362a4af7aea0e7c6f803c91771c
+# Start of hb tests
+# Start of paint tests
+# Start of ot tests
+start clip rectangle 0 500 500 1e+03
+ start transform 1 0 0 1 0 0
+ start transform 1 0 -0 1 0 0
+ start clip glyph 2
+ start transform 1 0 0 1 0 0
+ radial gradient
+ p0 166 768 radius 0
+ p1 166 768 radius 256
+ colors 2
+ 0 0 128 0 255
+ 0.5 255 255 255 255
+ 1 255 0 0 255
+ end transform
+ end clip
+ end transform
+ push group
+ start transform 1 0 -0 1 0 0
+ start clip glyph 159
+ start transform 1 0 0 1 0 0
+ solid 128 128 128 102
+ end transform
+ end clip
+ end transform
+ pop group mode 3
+ end transform
+end clip
