write better ember tests - be verbose

assertion-message.js

test('this is a dummy test', function(assert) {
  const a = true;
  const b = true;
  
  // a developer can quickly scan these messages to understand what
  // needs to happen and why.
  assert.ok(a, 'A is true when X');
  assert.equal(a, b, 'A and B are equal when X');
});