Core htmx AJAX Tests

• handles hx-target properly6ms ‣

  this.server.respondWith('GET', '/test', 'Clicked!')
  var btn = make('<button hx-get="/test" hx-target="#s1">Click Me!</button>')
  var target = make('<span id="s1">Initial</span>')
  btn.click()
  target.innerHTML.should.equal('Initial')
  this.server.respond()
  target.innerHTML.should.equal('Clicked!')