1 files changed, 35 insertions, 0 deletions
diff --git a/dom/canvas/test/reftest/filters/liveness-document-open.html b/dom/canvas/test/reftest/filters/liveness-document-open.html
new file mode 100644
index 0000000000..de31875e53
--- /dev/null
+++ b/dom/canvas/test/reftest/filters/liveness-document-open.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html lang="en">
+<title>canvas filters: remove referenced filter element through document.open()</title>
+<body onload="loaded()">
+<canvas id="canvas" width="10" height="10"></canvas>
+<svg height="0">
+  <filter id="filter">
+    <feFlood flood-color="red"/>
+  </filter>
+</svg>
+<script>
+function loaded() {
+  var ctx = document.getElementById('canvas').getContext('2d');
+  ctx.filter = 'url(#filter)';
+  ctx.fillRect(0, 0, 10, 10); // do a draw first to work around bug 1287316
+  document.open();
+  // The document.open() call removed #filter from the document. So the filter
+  // reference should now be invalid, and the rect should be drawn without a
+  // filter applied, resulting in black.
+  ctx.fillRect(0, 0, 10, 10);
+  try {
+    var data = ctx.getImageData(0, 0, 1, 1).data;
+    if (data[0] == 0 && data[1] == 0 && data[2] == 0 && data[3] == 255) {
+      // Successfully painted black.
+      document.write('PASS');
+    } else {
+      // Painted something else, like red.
+      document.write('FAIL');
+    }
+  } catch (e) {
+    document.write('getImageData failed');
+  }
+  document.close();
+}
+</script>