[debugger] add more tests to side-effect free debug evaluate.

test/debugger/debug/debug-evaluate-no-side-effect-async.js

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --ignition
+
+// Test that asynchronous features do not work with
+// side-effect free debug-evaluate.
+
+Debug = debug.Debug
+
+var exception = null;
+
+function* generator() {
+  yield 1;
+}
+
+async function async() {
+  return 1;
+}
+
+var g = generator();
+
+function listener(event, exec_state, event_data, data) {
+  if (event != Debug.DebugEvent.Break) return;
+  try {
+    function fail(source) {
+      assertThrows(() => exec_state.frame(0).evaluate(source, true),
+                   EvalError);
+    }
+    fail("new Promise()");
+    fail("generator()");
+    fail("g.next()");
+    fail("async()");
+  } catch (e) {
+    exception = e;
+    print(e, e.stack);
+  };
+};
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+function f() {
+  debugger;
+};
+
+f();
+
+assertNull(exception);