feat(compiler): add MockPipeResolver

modules/@angular/compiler/test/pipe_resolver_mock_spec.ts

@@ -0,0 +1,39 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {beforeEach, ddescribe, describe, expect, iit, it, inject,} from '@angular/core/testing/testing_internal';
+
+import {stringify, isBlank} from '../src/facade/lang';
+import {MockPipeResolver} from '../testing';
+import {Pipe, PipeMetadata, Injector} from '@angular/core';
+
+export function main() {
+  describe('MockPipeResolver', () => {
+    var pipeResolver: MockPipeResolver;
+
+    beforeEach(inject(
+        [Injector], (injector: Injector) => { pipeResolver = new MockPipeResolver(injector); }));
+
+    describe('Pipe overriding', () => {
+      it('should fallback to the default PipeResolver when templates are not overridden', () => {
+        var pipe = pipeResolver.resolve(SomePipe);
+        expect(pipe.name).toEqual('somePipe');
+      });
+
+      it('should allow overriding the @Pipe', () => {
+        pipeResolver.setPipe(SomePipe, new PipeMetadata({name: 'someOtherName'}));
+        var pipe = pipeResolver.resolve(SomePipe);
+        expect(pipe.name).toEqual('someOtherName');
+      });
+    });
+  });
+}
+
+@Pipe({name: 'somePipe'})
+class SomePipe {
+}