feat(TestComponentBuilder): add #overrideBindings and #overrideViewBindings

Closes #4052

modules/angular2/src/mock/directive_resolver_mock.ts

@@ -0,0 +1,65 @@
+import {Map, MapWrapper, ListWrapper} from 'angular2/src/core/facade/collection';
+import {
+  Type,
+  isPresent,
+  BaseException,
+  stringify,
+  isBlank,
+  print
+} from 'angular2/src/core/facade/lang';
+import {DirectiveMetadata, ComponentMetadata} from '../core/metadata';
+import {DirectiveResolver} from 'angular2/src/core/compiler/directive_resolver';
+
+export class MockDirectiveResolver extends DirectiveResolver {
+  private _bindingsOverrides: Map<Type, any[]> = new Map();
+  private _viewBindingsOverrides: Map<Type, any[]> = new Map();
+
+  resolve(type: Type): DirectiveMetadata {
+    var dm = super.resolve(type);
+
+    var bindingsOverride = this._bindingsOverrides.get(type);
+    var viewBindingsOverride = this._viewBindingsOverrides.get(type);
+
+    var bindings = dm.bindings;
+    if (isPresent(bindingsOverride)) {
+      bindings = dm.bindings.concat(bindingsOverride);
+    }
+
+    if (dm instanceof ComponentMetadata) {
+      var viewBindings = dm.viewBindings;
+      if (isPresent(viewBindingsOverride)) {
+        viewBindings = dm.viewBindings.concat(viewBindingsOverride);
+      }
+
+      return new ComponentMetadata({
+        selector: dm.selector,
+        properties: dm.properties,
+        events: dm.events,
+        host: dm.host,
+        bindings: bindings,
+        exportAs: dm.exportAs,
+        compileChildren: dm.compileChildren,
+        changeDetection: dm.changeDetection,
+        viewBindings: viewBindings
+      });
+    }
+
+    return new DirectiveMetadata({
+      selector: dm.selector,
+      properties: dm.properties,
+      events: dm.events,
+      host: dm.host,
+      bindings: bindings,
+      exportAs: dm.exportAs,
+      compileChildren: dm.compileChildren
+    });
+  }
+
+  setBindingsOverride(type: Type, bindings: any[]): void {
+    this._bindingsOverrides.set(type, bindings);
+  }
+
+  setViewBindingsOverride(type: Type, viewBindings: any[]): void {
+    this._viewBindingsOverrides.set(type, viewBindings);
+  }
+}