1 files changed, 105 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-environment-06.js b/js/src/jit-test/tests/debug/Frame-environment-06.js
new file mode 100644
index 0000000000..6faea6ad52
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-environment-06.js
@@ -0,0 +1,105 @@
+// |jit-test| error:all-jobs-completed-successfully
+// Test that Debugger.Frame.prototype.environment works on suspended
+// async function.
+
+load(libdir + "asserts.js");
+
+const g = newGlobal({ newCompartment: true });
+const dbg = new Debugger(g);
+
+g.eval(`
+var resolveTop;
+var resolveBlock;
+var resolveLoop;
+var resolveCatch;
+
+async function f() {
+  var promises = {
+    top: new Promise(r => { resolveTop = r; }),
+    block: new Promise(r => { resolveBlock = r; }),
+    loop: new Promise(r => { resolveLoop = r; }),
+    catch: new Promise(r => { resolveCatch = r; }),
+  };
+
+  var value = 42;
+  Promise.resolve().then(resolveTop);
+  await promises.top;
+  {
+    let block = "block";
+    Promise.resolve().then(resolveBlock);
+    await promises.block;
+  }
+  for (let loop of ["loop"]) {
+    Promise.resolve().then(resolveLoop);
+    await promises.loop;
+  }
+  try {
+    throw "err";
+  } catch (err) {
+    Promise.resolve().then(resolveCatch);
+    await promises.catch;
+  }
+  return value;
+}
+`);
+
+const waitForOnPop = frame => new Promise(r => {
+  assertEq(frame.onPop, undefined);
+  frame.onPop = () => {
+    frame.onPop = undefined;
+    r();
+  };
+});
+
+let frame;
+dbg.onEnterFrame = f => {
+  frame = f;
+  dbg.onEnterFrame = undefined;
+};
+
+(async () => {
+  const promise = g.f();
+
+  assertEq(!!frame, true);
+  assertEq(
+    JSON.stringify(frame.environment.names()),
+    JSON.stringify(["arguments", "promises", "value"])
+  );
+  assertEq(frame.environment.getVariable("value"), 42);
+
+  frame.environment.setVariable("value", 43);
+
+  assertEq(frame.environment.getVariable("value"), 43);
+
+  await waitForOnPop(frame);
+
+  assertEq(
+    JSON.stringify(frame.environment.names()),
+    JSON.stringify(["block"])
+  );
+  assertEq(frame.environment.getVariable("block"), "block");
+
+  await waitForOnPop(frame);
+
+  assertEq(
+    JSON.stringify(frame.environment.names()),
+    JSON.stringify(["loop"])
+  );
+  assertEq(frame.environment.getVariable("loop"), "loop");
+
+  await waitForOnPop(frame);
+
+  assertEq(
+    JSON.stringify(frame.environment.names()),
+    JSON.stringify(["err"])
+  );
+  assertEq(frame.environment.getVariable("err"), "err");
+
+  const result = await promise;
+
+  assertEq(result, 43);
+
+  assertThrowsInstanceOf(() => frame.environment, Error);
+
+  throw "all-jobs-completed-successfully";
+})();