v8/test/debugger/debug/es6/debug-stepin-default-parameters.js

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// Copyright 2015 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.
Debug = debug.Debug
var exception = null;
var log = [];
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
print(event_data.sourceLineText());
var entry = "";
for (var i = 0; i < exec_state.frameCount(); i++) {
entry += exec_state.frame(i).sourceLineText().substr(-1);
entry += exec_state.frame(i).sourceColumn();
}
log.push(entry);
exec_state.prepareStep(Debug.StepAction.StepIn);
} catch (e) {
exception = e;
}
};
function default_arg(x) {
return "default"; // d
} // e
function f(arg0 = default_arg()) { // f
return arg0; // g
} // h
Debug.setListener(listener);
debugger; // a
var result = f(); // b
Debug.setListener(null); // c
assertNull(exception);
assertEquals("default", result);
assertEquals(["a0","b13","f18b13","d2f18b13","e0f18b13","g2b13","h0b13","c0"],
log);