Core htmx extension tests

• should support event cancellation by returning false5ms ‣

  htmx.defineExtension('ext-prevent-request', {
    onEvent: function(name, evt) {
      if (name === 'htmx:beforeRequest') {
        return false
      }
    }
  })
  this.server.respondWith('GET', '/test', 'clicked!')
  var div = make('<div hx-get="/test" hx-ext="ext-prevent-request">Click Me!</div>')
  div.click()
  this.server.respond()
  div.innerHTML.should.equal('Click Me!')

• should support event cancellation with preventDefault1ms ‣

  htmx.defineExtension('ext-prevent-request', {
    onEvent: function(name, evt) {
      if (name === 'htmx:beforeRequest') {
        evt.preventDefault()
      }
    }
  })
  this.server.respondWith('GET', '/test', 'clicked!')
  var div = make('<div hx-get="/test" hx-ext="ext-prevent-request">Click Me!</div>')
  div.click()
  this.server.respond()
  div.innerHTML.should.equal('Click Me!')

• withExtensions catches and logs any exceptions2ms ‣

  htmx.defineExtension('ext-prevent-request', {
    onEvent: function(name, evt) {
      if (name === 'htmx:beforeRequest') {
        evt.preventDefault()
      }
    }
  })
  var div = make('<div hx-ext="ext-prevent-request">Foo</div>')
  htmx._('withExtensions')(div, function(extension) {
    throw new Error('throw error to catch and log')
  })

• encodeParameters works as expected6ms ‣

  htmx.defineExtension('enc-param', {
    encodeParameters: function(xhr, parameters, elt) {
      return 'foo=bar'
    }
  })
  var values
  this.server.respondWith('Post', '/test', function(xhr) {
    values = getParameters(xhr)
    xhr.respond(200, {}, 'clicked!')
  })
  this.server.respondWith('GET', '/test', 'clicked!')
  var div = make('<div hx-post="/test" hx-ext="enc-param">Click Me!</div>')
  div.click()
  this.server.respond()
  div.innerHTML.should.equal('clicked!')
  values.foo.should.equal('bar')

• extensionBase return expected values0ms ‣

  var extBase = htmx._('extensionBase')()
  should.equal(extBase.init(), null)
  should.equal(extBase.getSelectors(), null)
  should.equal(extBase.onEvent(), true)
  should.equal(extBase.transformResponse('text'), 'text')
  should.equal(extBase.isInlineSwap(), false)
  should.equal(extBase.handleSwap(), false)
  should.equal(extBase.encodeParameters(), null)