Clean affix unit tests up

js/tests/unit/affix.js

@@ -19,15 +19,18 @@ $(function () {
   })
 
   test('should provide no conflict', function () {
-    ok(!$.fn.affix, 'affix was set back to undefined (org value)')
+    strictEqual($.fn.affix, undefined, 'affix was set back to undefined (org value)')
   })
 
-  test('should return element', function () {
-    ok($(document.body).bootstrapAffix()[0] == document.body, 'document.body returned')
+  test('should return jquery collection containing the element', function () {
+    var $el = $('<div/>')
+    var $affix = $el.bootstrapAffix()
+    ok($affix instanceof $, 'returns jquery collection')
+    strictEqual($affix[0], $el[0], 'collection contains element')
   })
 
   test('should exit early if element is not visible', function () {
-    var $affix = $('<div style="display: none"></div>').bootstrapAffix()
+    var $affix = $('<div style="display: none"/>').bootstrapAffix()
     $affix.data('bs.affix').checkPosition()
     ok(!$affix.hasClass('affix'), 'affix class was not added')
   })
@@ -35,8 +38,14 @@ $(function () {
   test('should trigger affixed event after affix', function () {
     stop()
 
-    var template = $('<div id="affixTarget"><ul><li>Please affix</li><li>And unaffix</li></ul></div><div id="affixAfter" style="height: 20000px; display:block;"></div>')
-    template.appendTo('body')
+    var templateHTML = '<div id="affixTarget">' +
+        '<ul>' +
+        '<li>Please affix</li>' +
+        '<li>And unaffix</li>' +
+        '</ul>' +
+        '</div>' +
+        '<div id="affixAfter" style="height: 20000px; display: block;"/>'
+    $(templateHTML).appendTo(document.body)
 
     $('#affixTarget').bootstrapAffix({
       offset: $('#affixTarget ul').position()
@@ -44,19 +53,19 @@ $(function () {
 
     $('#affixTarget')
       .on('affix.bs.affix', function () {
-        ok(true, 'affix event triggered')
+        ok(true, 'affix event fired')
       }).on('affixed.bs.affix', function () {
-        ok(true, 'affixed event triggered')
-        $('#affixTarget').remove()
-        $('#affixAfter').remove()
+        ok(true, 'affixed event fired')
+        $('#affixTarget, #affixAfter').remove()
         start()
       })
 
     setTimeout(function () {
       window.scrollTo(0, document.body.scrollHeight)
+
       setTimeout(function () {
         window.scroll(0, 0)
-      }, 0)
+      }, 18) // for testing in a browser
     }, 0)
   })
 })