[gegl] actually add polar coordinates test

[Øyvind Kolås <ok src gnome org>]

commit 17bb4e6475eae7f8c8d8ccfaa0573aafd312dcd8
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat May 23 21:54:47 2015 +0200

    actually add polar coordinates test

 tests/compositions/polar-coordinates.xml           |   10 ++++++++++
 tests/compositions/reference/polar-coordinates.png |  Bin 0 -> 780177 bytes
 2 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/tests/compositions/polar-coordinates.xml b/tests/compositions/polar-coordinates.xml
new file mode 100644
index 0000000..0810e59
--- /dev/null
+++ b/tests/compositions/polar-coordinates.xml
@@ -0,0 +1,10 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<gegl>
+  <node operation='gegl:polar-coordinates'>
+  </node>
+  <node operation='gegl:load'>
+    <params>
+      <param name='path'>data/car-stack.png</param>
+    </params>
+  </node>
+</gegl>
diff --git a/tests/compositions/reference/polar-coordinates.png 
b/tests/compositions/reference/polar-coordinates.png
new file mode 100644
index 0000000..bcb84c1
Binary files /dev/null and b/tests/compositions/reference/polar-coordinates.png differ