refactor: move angular source to /packages rather than modules/@angular

packages/upgrade/test/common/test_helpers.ts

@@ -0,0 +1,25 @@
+/**
+ * @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
+ */
+
+export function html(html: string): Element {
+  // Don't return `body` itself, because using it as a `$rootElement` for ng1
+  // will attach `$injector` to it and that will affect subsequent tests.
+  const body = document.body;
+  body.innerHTML = `<div>${html.trim()}</div>`;
+  const div = document.body.firstChild as Element;
+
+  if (div.childNodes.length === 1 && div.firstChild instanceof HTMLElement) {
+    return div.firstChild;
+  }
+
+  return div;
+}
+
+export function multiTrim(text: string): string {
+  return text.replace(/\n/g, '').replace(/\s\s+/g, ' ').trim();
+}