old_contents: import test from 'ava';
  import { create } from '../lib';
  
new_contents: import test from 'ava';
  import { create } from '../lib';
  
  test('"create" function.', ({is, true: isTrue}) => {
    // Create object.
    let Test = create(function(a){
      this.a = a;
    }, {
      foo: function(a){ this.a = a; }
    });
  
    // Initialize object.
    let foo = new Test('baz');
  
    // Check construction value.
    is(foo.a, 'baz');
  
    // Change value
    foo.foo('qux'); // Haha, foofoo
  
    // Test new value
    is(foo.a, 'qux');
  
    // Construction without "new"
    // jshint newcap: false
    let bar = Test('qux');
    isTrue(bar instanceof Test);
  });
  
subject: Add lib/create.js test