setter-argc.js - mozsearch

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// Check that setters throw TypeError when passed no arguments, instead of crashing.

function check(obj) {

  let proto = Object.getPrototypeOf(obj);

  let props = Object.getOwnPropertyNames(proto);

  for (let prop of props) {

    let desc = Object.getOwnPropertyDescriptor(proto, prop);

    if (desc.set) {

      print("bleah: " + JSON.stringify(prop));

      assertEq(typeof desc.set, 'function');

      try {

        desc.set.call(obj);

        assertEq("should have thrown TypeError", false);

      } catch (e) {

        assertEq(e instanceof TypeError, true);

var dbg = new Debugger;

var g = newGlobal({newCompartment: true});

var gw = dbg.addDebuggee(g);

// Debugger

check(dbg);

// Debugger.Memory

check(dbg.memory);

// Debugger.Object

g.eval('function f() { debugger; }');

var fw = gw.getOwnPropertyDescriptor('f').value;

check(fw);

// Debugger.Script

check(fw.script);

// Debugger.Source

check(fw.script.source);

// Debugger.Environment

check(fw.environment);

// Debugger.Frame

var log = '';

dbg.onDebuggerStatement = function(frame) {

  log += 'd';

  check(frame);

g.eval('f()');

assertEq(log, 'd');