Added Twitter Bootstrap source

We're going to build a custom version

cssbuild/twitter-bootstrap/js/tests/unit/bootstrap-collapse.js

@@ -0,0 +1,54 @@
+$(function () {
+
+    module("bootstrap-collapse")
+
+      test("should be defined on jquery object", function () {
+        ok($(document.body).collapse, 'collapse method is defined')
+      })
+
+      test("should return element", function () {
+        ok($(document.body).collapse()[0] == document.body, 'document.body returned')
+      })
+
+      test("should show a collapsed element", function () {
+        var el = $('<div class="collapse"></div>').collapse('show')
+        ok(el.hasClass('in'), 'has class in')
+        ok(/height/.test(el.attr('style')), 'has height set')
+      })
+
+      test("should hide a collapsed element", function () {
+        var el = $('<div class="collapse"></div>').collapse('hide')
+        ok(!el.hasClass('in'), 'does not have class in')
+        ok(/height/.test(el.attr('style')), 'has height set')
+      })
+
+      test("should not fire shown when show is prevented", function () {
+        $.support.transition = false
+        stop();
+        $('<div class="collapse"/>')
+          .bind('show', function (e) {
+            e.preventDefault();
+            ok(true);
+            start();
+          })
+          .bind('shown', function () {
+            ok(false);
+          })
+          .collapse('show')
+      })
+
+      test("should reset style to auto after finishing opening collapse", function () {
+        $.support.transition = false
+        stop();
+        $('<div class="collapse" style="height: 0px"/>')
+          .bind('show', function () {
+            ok(this.style.height == '0px')
+          })
+          .bind('shown', function () {
+            ok(this.style.height == 'auto')
+            start()
+          })
+          .collapse('show')
+      })
+
+})