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-rw-r--r--js/src/jit-test/tests/debug/Frame-this-16.js38
1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-this-16.js b/js/src/jit-test/tests/debug/Frame-this-16.js
new file mode 100644
index 0000000000..43aec1f2c5
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-this-16.js
@@ -0,0 +1,38 @@
+// Test that Debugger.Frame.prototype.this works on a suspended async
+// generator function.
+
+load(libdir + "asserts.js");
+
+const g = newGlobal({ newCompartment: true });
+const dbg = new Debugger();
+const gDO = dbg.addDebuggee(g);
+
+g.eval(`
+var context = {};
+var f = async function*() {
+ await Promise.resolve();
+ return this;
+}.bind(context);
+`);
+
+let frame;
+dbg.onEnterFrame = f => {
+ frame = f;
+ assertEq(frame.this, gDO.makeDebuggeeValue(g.context));
+ dbg.onEnterFrame = undefined;
+};
+
+(async () => {
+ const it = g.f();
+
+ assertEq(!!frame, true);
+ assertEq(frame.this, gDO.makeDebuggeeValue(g.context));
+
+ const promise = it.next();
+
+ assertEq(frame.this, gDO.makeDebuggeeValue(g.context));
+
+ await promise;
+
+ assertThrowsInstanceOf(() => frame.this, Error);
+})();