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-rw-r--r--xpcom/tests/unit/test_bug1434856.js27
1 files changed, 27 insertions, 0 deletions
diff --git a/xpcom/tests/unit/test_bug1434856.js b/xpcom/tests/unit/test_bug1434856.js
new file mode 100644
index 0000000000..a8dfa08079
--- /dev/null
+++ b/xpcom/tests/unit/test_bug1434856.js
@@ -0,0 +1,27 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+function run_test() {
+ let complete = false;
+
+ let runnable = {
+ internalQI: ChromeUtils.generateQI(["nsIRunnable"]),
+ // eslint-disable-next-line mozilla/use-chromeutils-generateqi
+ QueryInterface(iid) {
+ // Attempt to schedule another runnable. This simulates a GC/CC
+ // being scheduled while executing the JS QI.
+ Services.tm.dispatchToMainThread(() => false);
+ return this.internalQI(iid);
+ },
+
+ run() {
+ complete = true;
+ },
+ };
+
+ Services.tm.dispatchToMainThread(runnable);
+ Services.tm.spinEventLoopUntil(
+ "Test(test_bug1434856.js:run_test)",
+ () => complete
+ );
+}