1 files changed, 21 insertions, 0 deletions
diff --git a/dom/canvas/test/reftest/filters/units-em.html b/dom/canvas/test/reftest/filters/units-em.html
new file mode 100644
index 0000000000..44f76dc4b4
--- /dev/null
+++ b/dom/canvas/test/reftest/filters/units-em.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<body>
+<canvas id="canvas" width="100" height="100"></canvas>
+<script>
+
+var canvas = document.getElementById('canvas');
+var ctx = canvas.getContext('2d');
+
+ctx.font = '20px sans-serif';
+ctx.filter = 'drop-shadow(0 .5em black)';
+ctx.fillStyle = '#0f0';
+ctx.fillRect(25, 25, 50, 40);
+
+canvas.style.fontSize = '5px';
+ctx.font = '4em sans-serif';
+ctx.filter = 'drop-shadow(0 .5em black)';
+
+</script>
+</body>
+</html>