Updated the files.

my-app/node_modules/@schematics/angular/resolver/functional-files/__name@dasherize__.resolver.spec.ts.template

@@ -0,0 +1,17 @@
+import { TestBed } from '@angular/core/testing';
+import { ResolveFn } from '@angular/router';
+
+import { <%= camelize(name) %>Resolver } from './<%= dasherize(name) %>.resolver';
+
+describe('<%= camelize(name) %>Resolver', () => {
+  const executeResolver: ResolveFn<boolean> = (...resolverParameters) => 
+      TestBed.runInInjectionContext(() => <%= camelize(name) %>Resolver(...resolverParameters));
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+  });
+
+  it('should be created', () => {
+    expect(executeResolver).toBeTruthy();
+  });
+});

my-app/node_modules/@schematics/angular/resolver/functional-files/__name@dasherize__.resolver.ts.template

@@ -0,0 +1,5 @@
+import { ResolveFn } from '@angular/router';
+
+export const <%= camelize(name) %>Resolver: ResolveFn<boolean> = (route, state) => {
+  return true;
+};