chore(test): Add TestBed class for easy test bootstrapping

Author: mhevery

lib/directive.dart

@@ -6,6 +6,7 @@ String _ATTR_DIRECTIVE = '-attr' + _DIRECTIVE;
 
 class Directive {
   Type type;
+  // TODO(misko): this should be renamed to selector once we change over to meta-data.
   String $name;
   Function $generate;
   String $transclude;
@@ -30,7 +31,10 @@ class Directive {
         onMatch: (m) => '-' + m.group(0).toLowerCase())
       .substring(1);
 
-    if ($name.endsWith(_ATTR_DIRECTIVE)) {
+    var $selector = reflectStaticField(type, r'$selector');
+    if ($selector != null) {
+      $name = $selector;
+    } else if ($name.endsWith(_ATTR_DIRECTIVE)) {
       $name = '[${$name.substring(0, $name.length - _ATTR_DIRECTIVE.length)}]';
     } else if ($name.endsWith(_DIRECTIVE)) {
       $name = $name.substring(0, $name.length - _DIRECTIVE.length);
@@ -54,10 +58,6 @@ class Directive {
     $map = reflectStaticField(type, '\$map');
     $publishAs = reflectStaticField(type, r'$publishAs');
     isStructural = $transclude != null;
-    var $selector = reflectStaticField(type, r'$selector');
-    if ($selector != null) {
-      $name = $selector;
-    }
     if (isComponent && $map == null) {
       $map = new Map<String, String>();
     }

lib/directives/ng_bind.dart

@@ -1,6 +1,6 @@
 part of angular;
 
-class NgBindAttrDirective  {
+class NgBindAttrDirective {
 
   NgBindAttrDirective(dom.Element element, NodeAttrs attrs, Scope scope) {
     scope.$watch(attrs[this], (value) => element.text = value);

test/_specs.dart

@@ -139,6 +139,7 @@ class JQuery implements List<Node> {
   eq(num childIndex) => $(this[childIndex]);
   remove() => forEach((n) => n.remove());
   attr([String name]) => accessor((n) => n.attributes[name], (n, v) => n.attributes[name] = v);
+  prop([String name]) => accessor((n) => getter(n, null, name), (n, v) => setter(n, name, v));
   textWithShadow() => fold('', (t, n) => '${t}${renderedText(n)}');
   find(selector) => fold(new JQuery(), (jq, n) => jq..addAll(n.queryAll(selector)));
   hasClass(String name) => fold(false, (hasClass, node) => hasClass ? true : node.classes.contains(name));

test/_test_bed.dart

@@ -0,0 +1,60 @@
+import "_specs.dart";
+
+
+/**
+ * Class which simplifies bootstraping angular for tests.
+ */
+class TestBed {
+  Injector injector;
+  Scope rootScope;
+  Compiler compiler;
+  Parser parser;
+
+
+  JQuery rootElement;
+  Block rootBlock;
+
+  TestBed(
+      Injector this.injector,
+      Scope this.rootScope,
+      Compiler this.compiler,
+      Parser this.parser);
+
+
+  compile(html) {
+    rootElement = $(html);
+    rootBlock = compiler(rootElement)(injector, rootElement);
+  }
+}
+
+beforeEachTestBed(assign) {
+  return module((AngularModule module) {
+    module.type(TestBed, TestBed);
+    module.directive(Probe);
+    return (TestBed tb) => assign(tb);
+  });
+}
+
+/*
+ * Use Probe directive to capture the Scope, Injector, Element from any DOM
+ * location into root-scope. This is useful for testing to get a hold of
+ * any directive.
+ *
+ *  <pre>
+ *    <div some-directive probe="myProbje">..</div>
+ *
+ *    rootScope.myProbe.directive(SomeAttrDirective);
+ */
+class Probe {
+  static String $selector = '[probe]';
+
+  Scope scope;
+  Injector injector;
+  Element element;
+
+  Probe(Scope this.scope, Injector this.injector, Element this.element, NodeAttrs attrs) {
+    scope.$root[attrs[this]] = this;
+  }
+
+  directive(Type type) => injector.get(type);
+}