1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/job-queue-04.js b/js/src/jit-test/tests/debug/job-queue-04.js
new file mode 100644
index 0000000000..76cf241e8d
--- /dev/null
+++ b/js/src/jit-test/tests/debug/job-queue-04.js
@@ -0,0 +1,24 @@
+// |jit-test| skip-if: !('oomTest' in this)
+// Bug 1527862: Don't assert that the Debugger drained its job queue unless we
+// actually saved the debuggee's queue.
+
+// Put a job in the queue.
+Promise.resolve(42).then(() => {});
+
+var g = newGlobal({ newCompartment: true });
+var dbg = new Debugger(g);
+dbg.onNewScript = script => {};
+
+// Cause an OOM while initializing the AutoDebuggerJobQueueInterruption, so that
+// the destructor is run on an uninitialized instance.
+//
+// A properly initialized AutoDebuggerJobQueueInterruption asserts that the
+// debugger left its job queue entry, before restoring the debuggee's job queue
+// that it saved when it was initialized. But if OOM interrupts initialization,
+// the job queue left on the JSContext is still the debuggee's, which we have no
+// reason to expect is empty, so we shouldn't make any assertions about its
+// state. The assertion must be conditional on proper initialization (and use
+// the correct condition).
+oomTest(() => {
+    g.eval("(function() {})");
+}, {expectExceptionOnFailure: false});