1 files changed, 26 insertions, 0 deletions
diff --git a/layout/reftests/svg/smil/smil-util.js b/layout/reftests/svg/smil/smil-util.js
new file mode 100644
index 0000000000..18573c4b64
--- /dev/null
+++ b/layout/reftests/svg/smil/smil-util.js
@@ -0,0 +1,26 @@
+// Seeks to the given time and then removes the SVG document's class to trigger
+// a reftest snapshot. If pauseFlag is true, animations will be paused.
+function setTimeAndSnapshot(timeInSeconds, pauseFlag) {
+  var svg = document.documentElement;
+  if (pauseFlag) {
+    svg.pauseAnimations();
+  }
+  svg.setCurrentTime(timeInSeconds);
+  svg.removeAttribute("class");
+}
+
+// Seeks to the given time and then removes the SVG document's class to trigger
+// a reftest snapshot after waiting at least minWaitTimeInSeconds.
+function setTimeAndWaitToSnapshot(seekTimeInSeconds, minWaitTimeInSeconds) {
+  var svg = document.documentElement;
+  svg.setCurrentTime(seekTimeInSeconds);
+  var timeToTakeSnapshot =
+    window.performance.now() + minWaitTimeInSeconds * 1000;
+  requestAnimationFrame(function takeSnapshot(currentTime) {
+    if (currentTime > timeToTakeSnapshot) {
+      svg.removeAttribute("class");
+    } else {
+      requestAnimationFrame(takeSnapshot);
+    }
+  });
+}