v8/test/debugger/debug/debug-evaluate-arguments.js

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// 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: --allow-natives-syntax
Debug = debug.Debug;
var listened = false;
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
var foo_arguments = exec_state.frame(1).evaluate("arguments").value();
var bar_arguments = exec_state.frame(0).evaluate("arguments").value();
assertArrayEquals(foo_expected, foo_arguments);
assertArrayEquals(bar_expected, bar_arguments);
listened = true;
} catch (e) {
print(e);
print(e.stack);
}
}
Debug.setListener(listener);
function foo(a) {
function bar(a,b,c) {
debugger;
return a + b + c;
}
return bar(1,2,a);
}
listened = false;
foo_expected = [3];
bar_expected = [1,2,3];
assertEquals(6, foo(3));
assertTrue(listened);
listened = false;
foo_expected = [3];
bar_expected = [1,2,3];
assertEquals(6, foo(3));
assertTrue(listened);
listened = false;
foo_expected = [3];
bar_expected = [1,2,3];
%OptimizeFunctionOnNextCall(foo);
assertEquals(6, foo(3));
assertTrue(listened);
listened = false;
foo_expected = [3,4,5];
bar_expected = [1,2,3];
%OptimizeFunctionOnNextCall(foo);
assertEquals(6, foo(3,4,5));
assertTrue(listened);
Debug.setListener(null);