v8/test/mjsunit/debug-evaluate-modify-this.js

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// Copyright 2016 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: --expose-debug-as debug
Debug = debug.Debug
var exception = null;
var f = () => { debugger; }
var g = function() { debugger; }
var h = (function() { return () => { debugger; }; }).call({});
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
assertThrows(() => exec_state.frame(0).evaluate("this = 2"));
} catch (e) {
exception = e;
print("Caught something. " + e + " " + e.stack);
};
};
Debug.setListener(listener);
f();
g();
g.call({});
h();
Debug.setListener(null);
assertNull(exception);