title: Sinon - spy on constructor method
body: <p>I've found a couple of related questions but none seem to help with what I want to implement.</p>
  
  <p>So, I would like to spy on a constructor method so that when an object created with the constructor calls this method within <strong>a different scope</strong> another function, I can know the arguments with which that call was made.</p>
  
  <p>Example:</p>
  
  <pre><code>function Constructor(args){
    this.method = sinon.spy()
  }
  
  function someFunction(){
    obj = new Constructor(args);
    obj.method()
  }
  
  console.log(Constructor.method.args[0]); // list the args of the obj.method() call
  </code></pre>
  
  <p>Any help will be much appreciated.</p>
  
  <p>Edit: I realized I phrased the question wrong and ended up asking something utterly trivial :-) </p>