Lots of stability and performance updates and UI polish too.

Polish the Scenario Runner UI to include:
- a scroll pane that steps appear in since the list can be very long
- Collapse successful tests
- Show the line where the DSL statements were when there's an error (Chrome, Firefox)

Also:
- Remove lots angular.bind calls to reduce the amount of stack space used.
- Use setTimeout(...,0) to schedule the next future to let the browser breathe and have it repaint the steps. Also prevents overflowing the stack when an it() creates many futures.
- Run afterEach() handlers even if the it() block fails.
- Make navigateTo() take a function as the second argument so you can compute a URL in the future.
- Add wait() DSL statement to allow interactive debugging of tests.
- Allow custom jQuery selectors with element(...).query(fn) DSL statement.

Known Issues:
- All afterEach() handlers run even if a beforeEach() handler fails. Only after handlers for the same level as the failure and above should run.

1 files changed, 12 insertions, 6 deletions

diff --git a/src/scenario/Future.js b/src/scenario/Future.js
index 30c2d902..8853aa3f 100644
--- a/src/scenario/Future.js
+++ b/src/scenario/Future.js
@@ -1,12 +1,17 @@
 /**
  * A future action in a spec.
+ *
+ * @param {String} name of the future action
+ * @param {Function} future callback(error, result)
+ * @param {String} Optional. function that returns the file/line number.
  */
-angular.scenario.Future = function(name, behavior) {
+angular.scenario.Future = function(name, behavior, line) {
   this.name = name;
   this.behavior = behavior;
   this.fulfilled = false;
   this.value = undefined;
   this.parser = angular.identity;
+  this.line = line || function() { return ''; };
 };
 
 /**
@@ -15,18 +20,19 @@ angular.scenario.Future = function(name, behavior) {
  * @param {Function} Callback function(error, result)
  */
 angular.scenario.Future.prototype.execute = function(doneFn) {
-  this.behavior(angular.bind(this, function(error, result) {
-    this.fulfilled = true;
+  var self = this;
+  this.behavior(function(error, result) {
+    self.fulfilled = true;
     if (result) {
       try {
-        result = this.parser(result);
+        result = self.parser(result);
       } catch(e) {
         error = e;
       }
     }
-    this.value = error || result;
+    self.value = error || result;
     doneFn(error, result);
-  }));
+  });
 };
 
 /**