text: import test from 'ava';
  import findUndefindness from '.';
  
  test('Test find undefindness', t => {
  	const cat = {
  		name: undefined,
  		breed: 'Persian',
  		age: undefined
  	};
  	t.deepEqual(findUndefindness(cat), ['name', 'age']);
  
  	const kitty = {
  		name: 'Garfield',
  		age: 24,
  		breed: 'Tabby'
  	};
  
  	t.is(findUndefindness(kitty), null);
  
  	const user = {
  		name: undefined,
  		github: {
  			username: 'brh55',
  			repositories: {
  				personal: 43,
  				private: undefined
  			},
  			followers: {
  				username: 'rightlag',
  				repositories: {
  					personal: 20,
  					private: undefined
  				},
  				stars: 1
  			},
  			stars: 100
  		},
  		emoji: undefined
  	};
  
  	t.deepEqual(
  		findUndefindness(user),
  		['name', 'github.repositories.private', 'github.followers.repositories.private', 'emoji']
  	);
  });
  