Fix //src/hello-world/test karma test

Author: gregmagolan

BUILD.bazel

@@ -28,6 +28,7 @@ filegroup(
         "@ngrx",
         "@types",
         "protractor",
+        "reflect-metadata",
         "tsickle",
         "tslib",
         "tsutils",

src/hello-world/BUILD.bazel

@@ -44,7 +44,10 @@ ts_library(
 ts_web_test_suite(
     name = "test",
     srcs = ["//:node_modules/tslib/tslib.js"],
-    bootstrap = ["//:node_modules/zone.js/dist/zone-testing-bundle.js"],
+    bootstrap = [
+        "//:node_modules/zone.js/dist/zone-testing-bundle.js",
+        "//:node_modules/reflect-metadata/Reflect.js"
+    ],
     browsers = [
         "@io_bazel_rules_webtesting//browsers:chromium-local",
         "@io_bazel_rules_webtesting//browsers:firefox-local",

src/hello-world/hello-world.component.spec.ts

@@ -1,4 +1,3 @@
-import {DebugElement} from '@angular/core';
 import {async, ComponentFixture, TestBed} from '@angular/core/testing';
 import {By} from '@angular/platform-browser';
 import {BrowserDynamicTestingModule, platformBrowserDynamicTesting} from '@angular/platform-browser-dynamic/testing';