text: // Copyright (C) 2015 the V8 project authors. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  /*---
  es6id: 9.5.7
  description: >
      A `in` check trigger trap.call(handler, target, P);
  info: |
      [[HasProperty]] (P)
  
      ...
      9. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target, P»)).
      ...
  ---*/
  
  var _handler, _target, _prop;
  var target = {};
  var handler = {
    has: function(t, prop) {
      _handler = this;
      _target = t;
      _prop = prop;
  
      return prop in t;
    }
  };
  var p = new Proxy(target, handler);
  
  "attr" in p;
  
  assert.sameValue(_handler, handler, "handler is context");
  assert.sameValue(_target, target, "target is the first parameter");
  assert.sameValue(_prop, "attr", "given prop is the second paramter");
  