[lasem] tests: add circular reference test files.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit 7aca27a3557211e2515977dbd0ad07b506ae18af
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Wed May 4 09:51:09 2011 +0200

    tests: add circular reference test files.

 .../svg/ignore-crashers/pattern-self-reference.svg |    5 +++++
 .../radial-gradient-self-reference.svg             |    5 +++++
 2 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/tests/data/svg/ignore-crashers/pattern-self-reference.svg b/tests/data/svg/ignore-crashers/pattern-self-reference.svg
new file mode 100644
index 0000000..9442157
--- /dev/null
+++ b/tests/data/svg/ignore-crashers/pattern-self-reference.svg
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"; xmlns:xlink="http://www.w3.org/1999/xlink"; id="svg-root" viewBox="0 0 480 360" width="100%" height="100%" version="1.1" baseProfile="basic">
+	<pattern id="Pat3a" xlink:href="#Pat3a" width="20" height="10" />
+	<rect x="20" y="20" width="440" height="80" fill="url(#Pat3a)" />
+</svg>
diff --git a/tests/data/svg/ignore-crashers/radial-gradient-self-reference.svg b/tests/data/svg/ignore-crashers/radial-gradient-self-reference.svg
new file mode 100644
index 0000000..b3e4386
--- /dev/null
+++ b/tests/data/svg/ignore-crashers/radial-gradient-self-reference.svg
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"; xmlns:xlink="http://www.w3.org/1999/xlink"; id="svg-root" viewBox="0 0 480 360" width="100%" height="100%" version="1.1" baseProfile="basic">
+	<radialGradient id="Grad2a" xlink:href="#Grad2a" gradientUnits="userSpaceOnUse" cx="240" cy=".5" fx=".5" fy="190" r="40" />
+	<rect x="20" width="440" height="-1220166678" fill="url(#Grad2a)" />
+</svg>