Updated the files.

my-app/node_modules/@angular-devkit/schematics/tools/node-modules-test-engine-host.js

@@ -0,0 +1,44 @@
+"use strict";
+/**
+ * @license
+ * Copyright Google LLC 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
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.NodeModulesTestEngineHost = void 0;
+const node_module_engine_host_1 = require("./node-module-engine-host");
+/**
+ * An EngineHost that uses a registry to super seed locations of collection.json files, but
+ * revert back to using node modules resolution. This is done for testing.
+ */
+class NodeModulesTestEngineHost extends node_module_engine_host_1.NodeModulesEngineHost {
+    _collections = new Map();
+    _tasks = [];
+    get tasks() {
+        return this._tasks;
+    }
+    clearTasks() {
+        this._tasks = [];
+    }
+    registerCollection(name, path) {
+        this._collections.set(name, path);
+    }
+    transformContext(context) {
+        const oldAddTask = context.addTask;
+        context.addTask = (task, dependencies) => {
+            this._tasks.push(task.toConfiguration());
+            return oldAddTask.call(context, task, dependencies);
+        };
+        return context;
+    }
+    _resolveCollectionPath(name, requester) {
+        const maybePath = this._collections.get(name);
+        if (maybePath) {
+            return maybePath;
+        }
+        return super._resolveCollectionPath(name, requester);
+    }
+}
+exports.NodeModulesTestEngineHost = NodeModulesTestEngineHost;