class-derived-default-constructor-3.js

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

g.eval(`

  class Base {}

  class Derived extends Base {}

  this.Derived = Derived;

`);

const dbg = new Debugger(g);

const gw = dbg.addDebuggee(g);

let calleeCount = 0;

dbg.onEnterFrame = frame => {

  // Ignore any other callees.

  if (frame.callee !== gw.makeDebuggeeValue(g.Derived)) {

    return;

  calleeCount++;

  // The implicit rest-argument has the non-identifier name ".args", therefore

  // we have to elide from the parameter names array.

  assertEq(frame.callee.parameterNames.length, 1);

  assertEq(frame.callee.parameterNames[0], undefined);

};

new g.Derived();

// |Derived| should be called at most once.

assertEq(calleeCount, 1);