tooltip.js

    var styles = '<style>'
        + '.tooltip, .tooltip *, .tooltip *:before, .tooltip *:after { box-sizing: border-box; }'
        + '.tooltip { position: absolute; display: block; font-size: 12px; line-height: 1.4; }'
        + '.tooltip .tooltip-inner { max-width: 200px; padding: 3px 8px; font-family: Helvetica; text-align: center; }'
        + '#trigger-parent {'
        + '  position: fixed;'
        + '  top: 100px;'
        + '  right: 17px;'
        + '}'
        + '</style>'
    var $styles = $(styles).appendTo('head')

    $('#qunit-fixture').append('<span id="trigger-parent"><a id="tt-trigger" title="If a_larger_text is written here, it won\'t fit using older broken version of BS">HOVER OVER ME</a></span>')
    var $trigger = $('#tt-trigger')

    $trigger
      .on('shown.bs.tooltip', function () {
        var $tip = $('.tooltip-inner')
        var tipXrightEdge = $tip.offset().left + $tip.width()
        var triggerXleftEdge = $trigger.offset().left
        ok(tipXrightEdge < triggerXleftEdge, 'tooltip with auto left placement, when near the right edge of the viewport, gets left placement')
        $trigger.bootstrapTooltip('hide')
      })
      .on('hidden.bs.tooltip', function () {
        $styles.remove()
        $(this).remove()
        equal($('.tooltip').length, 0, 'tooltip removed from dom')
        start()
      })
      .bootstrapTooltip({
        container: 'body',
        placement: 'auto left',
        trigger: 'manual'
      })

    $trigger.bootstrapTooltip('show')
  })

  test('should not reload the tooltip on subsequent mouseenter events', function () {
    var titleHtml = function () {
      var uid = $.fn.bootstrapTooltip.Constructor.prototype.getUID('tooltip')
      return '<p id="tt-content">' + uid + '</p><p>' + uid + '</p><p>' + uid + '</p>'
    }

    var $tooltip = $('<span id="tt-outer" rel="tooltip" data-trigger="hover" data-placement="top">some text</span>')
      .appendTo('#qunit-fixture')

    $tooltip.bootstrapTooltip({
      html: true,
      animation: false,
      trigger: 'hover',
      delay: { show: 0, hide: 500 },
      container: $tooltip,
      title: titleHtml
    })

    $('#tt-outer').trigger('mouseenter')

    var currentUid = $('#tt-content').text()

    $('#tt-content').trigger('mouseenter')
    equal(currentUid, $('#tt-content').text())
  })

  test('should not reload the tooltip if the mouse leaves and re-enters before hiding', function () {
    var titleHtml = function () {
      var uid = $.fn.bootstrapTooltip.Constructor.prototype.getUID('tooltip')
      return '<p id="tt-content">' + uid + '</p><p>' + uid + '</p><p>' + uid + '</p>'
    }

    var $tooltip = $('<span id="tt-outer" rel="tooltip" data-trigger="hover" data-placement="top">some text</span>')
      .appendTo('#qunit-fixture')

    $tooltip.bootstrapTooltip({
      html: true,
      animation: false,
      trigger: 'hover',
      delay: { show: 0, hide: 500 },
      container: $tooltip,
      title: titleHtml
    })

    var obj = $tooltip.data('bs.tooltip')

    $('#tt-outer').trigger('mouseenter')

    var currentUid = $('#tt-content').text()

    $('#tt-outer').trigger('mouseleave')
    equal(currentUid, $('#tt-content').text())

    ok(obj.hoverState == 'out', 'the tooltip hoverState should be set to "out"')

    $('#tt-content').trigger('mouseenter')
    ok(obj.hoverState == 'in', 'the tooltip hoverState should be set to "in"')

    equal(currentUid, $('#tt-content').text())
  })

  test('should position arrow correctly when tooltip is moved to not appear offscreen', function () {
    stop()

    var styles = '<style>'
        + '.tooltip, .tooltip *, .tooltip *:before, .tooltip *:after { box-sizing: border-box; }'
        + '.tooltip { position: absolute; }'
        + '.tooltip-arrow { position: absolute; width: 0; height: 0; }'
        + '.tooltip .tooltip-inner { max-width: 200px; padding: 3px 8px; }'
        + '</style>'
    var $styles = $(styles).appendTo('head')

    $('<a href="#" title="tooltip title" style="position: absolute; bottom: 0; right: 0;">Foobar</a>')
      .appendTo('body')
      .on('shown.bs.tooltip', function () {
        var arrowStyles = $(this).data('bs.tooltip').$tip.find('.tooltip-arrow').attr('style')
        ok(/left/i.test(arrowStyles) && !/top/i.test(arrowStyles), 'arrow positioned correctly')
        $(this).bootstrapTooltip('hide')
      })
      .on('hidden.bs.tooltip', function () {
        $styles.remove()
        $(this).remove()
        equal($('.tooltip').length, 0, 'tooltip removed from dom')
        start()
      })
      .bootstrapTooltip({
        container: 'body',
        placement: 'top',
        trigger: 'manual'
      })
      .bootstrapTooltip('show')
  })

  test('should correctly position tooltips on transformed elements', function () {
    var styleProps = document.documentElement.style
    if (!('transform' in styleProps) && !('webkitTransform' in styleProps) && !('msTransform' in styleProps)) {
      expect(0)
      return
    }

    stop()

    var styles = '<style>'
        + '#qunit-fixture { top: 0; left: 0; }'
        + '.tooltip, .tooltip *, .tooltip *:before, .tooltip *:after { box-sizing: border-box; }'
        + '.tooltip { position: absolute; }'
        + '.tooltip .tooltip-inner { width: 24px; height: 24px; font-family: Helvetica; }'
        + '#target { position: absolute; top: 100px; left: 50px; width: 100px; height: 200px; -webkit-transform: rotate(270deg); -ms-transform: rotate(270deg); transform: rotate(270deg); }'
        + '</style>'
    var $styles = $(styles).appendTo('head')

    var $element = $('<div id="target" title="1"/>').appendTo('#qunit-fixture')

    $element
      .on('shown.bs.tooltip', function () {
        var offset = $('.tooltip').offset()
        $styles.remove()
        ok(Math.abs(offset.left - 88) <= 1, 'tooltip has correct horizontal location')
        ok(Math.abs(offset.top - 126) <= 1, 'tooltip has correct vertical location')
        $element.bootstrapTooltip('hide')
        start()
      })
      .bootstrapTooltip({
        container: 'body',
        placement: 'top',
        trigger: 'manual'
      })

    $element.bootstrapTooltip('show')
  })

})