Core htmx API test

• should add class properly0ms ‣

  var div = make('<div></div>')
  div.classList.contains('foo').should.equal(false)
  htmx.addClass(div, 'foo')
  div.classList.contains('foo').should.equal(true)

• should add class properly w/ selector0ms ‣

  var div = make("<div id='div1'></div>")
  div.classList.contains('foo').should.equal(false)
  htmx.addClass('#div1', 'foo')
  div.classList.contains('foo').should.equal(true)

• should add class properly after delay21ms ‣

  var div = make('<div></div>')
  div.classList.contains('foo').should.equal(false)
  htmx.addClass(div, 'foo', 10)
  div.classList.contains('foo').should.equal(false)
  setTimeout(function() {
    div.classList.contains('foo').should.equal(true)
    done()
  }, 20)

• should add class properly after delay21ms ‣

  var div = make('<div></div>')
  htmx.addClass(div, 'foo')
  div.classList.contains('foo').should.equal(true)
  htmx.removeClass(div, 'foo', 10)
  div.classList.contains('foo').should.equal(true)
  setTimeout(function() {
    div.classList.contains('foo').should.equal(false)
    done()
  }, 20)