1 files changed, 11 insertions, 0 deletions
diff --git a/testing/mochitest/mochitest-e10s-utils.js b/testing/mochitest/mochitest-e10s-utils.js
new file mode 100644
index 000000000..5897c6542
--- /dev/null
+++ b/testing/mochitest/mochitest-e10s-utils.js
@@ -0,0 +1,11 @@
+// Utilities for running tests in an e10s environment.
+
+function e10s_init() {
+  // Listen for an 'oop-browser-crashed' event and log it so people analysing
+  // test logs have a clue about what is going on.
+  window.addEventListener("oop-browser-crashed", (event) => {
+    let uri = event.target.currentURI;
+    Cu.reportError("remote browser crashed while on " +
+                   (uri ? uri.spec : "<unknown>") + "\n");
+  }, true);
+}