fix(Jasmine): add support for jasmine 2 done.fail()

fixes #180

Author: vicb

Diff for: lib/jasmine/patch.js

@@ -15,12 +15,20 @@ function apply() {
   var originalIt = global.it;
   var originalFit = global.fit;
 
+  // Patch jasmine `done()`  and `done.fail()` so that they execute in the root zone
+  var patchJasmineDone = function(jasmineDone) {
+    var done = jasmineZone.bind(jasmineDone);
+    if (typeof jasmineDone.fail === 'function') {
+      done.fail = jasmineZone.bind(jasmineDone.fail);
+    }
+
+    return done;
+  }
+
   global.it = function zoneResettingIt(description, specFn, timeOut) {
     if (specFn.length) {
-      originalIt(description, function zoneResettingSpecFn(originalDone) {
-        specFn(function zoneResettingDone() {
-          jasmineZone.run(originalDone);
-        });
+      originalIt(description, function zoneResettingSpecFn(done) {
+        specFn(patchJasmineDone(done));
       }, timeOut);
     } else {
       originalIt(description, specFn, timeOut);
@@ -29,10 +37,8 @@ function apply() {
 
   global.fit = function zoneResettingFit(description, specFn, timeOut) {
     if (specFn.length) {
-      originalFit(description, function zoneResettingSpecFn(originalDone) {
-        specFn(function zoneResettingDone() {
-          jasmineZone.run(originalDone);
-        });
+      originalFit(description, function zoneResettingSpecFn(done) {
+        specFn(patchJasmineDone(done));
       }, timeOut);
     } else {
       originalFit(description, specFn, timeOut);