1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-constructing-01.js b/js/src/jit-test/tests/debug/Frame-constructing-01.js
new file mode 100644
index 0000000000..c17a454512
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-constructing-01.js
@@ -0,0 +1,27 @@
+// Debugger.Frame.prototype.constructing on a generator.
+
+load(libdir + "asserts.js");
+
+const g = newGlobal({ newCompartment: true });
+const dbg = Debugger(g);
+
+g.eval(`
+function* f() {}
+`);
+
+let frame;
+dbg.onEnterFrame = function(f) {
+  frame = f;
+  assertEq(frame.constructing, false);
+};
+
+const it = g.f();
+
+assertEq(frame.constructing, false);
+frame = null;
+
+it.next();
+
+assertEq(!!frame, true);
+// Throws because the frame has terminated.
+assertThrowsInstanceOf(() => frame.constructing, Error);