feat(test): find testabilities across dart js applications

Find angular testability objects across different dart js contexts by registering each application in a global array and interrogating each for testabilities. Closes angular#3611

Author: TedSander

modules/angular2/src/core/testability/get_testability.dart

@@ -10,17 +10,8 @@ import 'dart:js' as js;
 // Proxies a Dart function that accepts up to 10 parameters.
 js.JsFunction _jsFunction(Function fn) {
  const Object X = __varargSentinel;
- return new js.JsFunction.withThis((thisArg,
- [o1 = X,
- o2 = X,
- o3 = X,
- o4 = X,
- o5 = X,
- o6 = X,
- o7 = X,
- o8 = X,
- o9 = X,
- o10 = X]) {
+ return new js.JsFunction.withThis((thisArg, [o1 = X, o2 = X, o3 = X, o4 = X,
+ o5 = X, o6 = X, o7 = X, o8 = X, o9 = X, o10 = X]) {
  return __invokeFn(fn, o1, o2, o3, o4, o5, o6, o7, o8, o9, o10);
  });
 }
@@ -91,19 +82,46 @@ class PublicTestability implements _JsObjectProxyable {
 
 class GetTestability {
  static addToWindow(TestabilityRegistry registry) {
- js.context['getAngularTestability'] = _jsify((Element elem,
- [bool findInAncestors = true]) {
- Testability testability = registry.findTestabilityInTree(elem, findInAncestors);
- if (testability == null) {
+ var jsRegistry = js.context['ngTestabilityRegistries'];
+ if (jsRegistry == null) {
+ js.context['ngTestabilityRegistries'] = jsRegistry = new js.JsArray();
+ js.context['getAngularTestability'] = _jsify((Element elem,
+ [bool findInAncestors = true]) {
+ var registry = js.context['ngTestabilityRegistries'];
+ for (int i = 0; i < registry.length; i++) {
+ var result = registry[i].callMethod(
+ 'getAngularTestability', [elem, findInAncestors]);
+ if (result != null) return result;
+ }
  throw 'Could not find testability for element.';
- }
+ });
+ js.context['getAllAngularTestabilities'] = _jsify(() {
+ var registry = js.context['ngTestabilityRegistries'];
+ var result = [];
+ for (int i = 0; i < registry.length; i++) {
+ var testabilities =
+ registry[i].callMethod('getAllAngularTestabilities');
+ if (testabilities != null) result.addAll(testabilities);
+ }
+ return _jsify(result);
+ });
+ }
+ jsRegistry.add(_createRegistry(registry));
+ }
+
+ static js.JsObject _createRegistry(TestabilityRegistry registry) {
+ var object = new js.JsObject(js.context['Object']);
+ object['getAngularTestability'] = _jsify((Element elem,
+ bool findInAncestors) {
+ var testability = registry.findTestabilityInTree(elem, findInAncestors);
  return _jsify(new PublicTestability(testability));
  });
- js.context['getAllAngularTestabilities'] = _jsify(() {
- List<Testability> testabilities = registry.getAllTestabilities();
- var publicTestabilities = testabilities
+ object['getAllAngularTestabilities'] = _jsify(() {
+ var publicTestabilities = registry
+  .getAllTestabilities()
  .map((testability) => new PublicTestability(testability));
  return _jsify(publicTestabilities);
  });
+ return object;
  }
 }