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-rw-r--r--dom/workers/test/recursion_worker.js46
1 files changed, 46 insertions, 0 deletions
diff --git a/dom/workers/test/recursion_worker.js b/dom/workers/test/recursion_worker.js
new file mode 100644
index 000000000..1a61ec9d1
--- /dev/null
+++ b/dom/workers/test/recursion_worker.js
@@ -0,0 +1,46 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// This function should never run on a too much recursion error.
+onerror = function(event) {
+ postMessage(event.message);
+};
+
+// Pure JS recursion
+function recurse() {
+ recurse();
+}
+
+// JS -> C++ -> JS -> C++ recursion
+function recurse2() {
+ var xhr = new XMLHttpRequest();
+ xhr.onreadystatechange = function() {
+ xhr.open("GET", "nonexistent.file");
+ }
+ xhr.open("GET", "nonexistent.file");
+}
+
+var messageCount = 0;
+onmessage = function(event) {
+ switch (++messageCount) {
+ case 2:
+ recurse2();
+
+ // An exception thrown from an event handler like xhr.onreadystatechange
+ // should not leave an exception pending in the code that generated the
+ // event.
+ postMessage("Done");
+ return;
+
+ case 1:
+ recurse();
+ throw "Exception should have prevented us from getting here!";
+
+ default:
+ throw "Weird number of messages: " + messageCount;
+ }
+
+ throw "Impossible to get here!";
+}