test(@angular-devkit/build-angular): change sri tests to use new test harness

(cherry picked from commit 3db8c6e)

Author: alan-agius4

packages/angular_devkit/build_angular/src/browser/specs/subresource-integrity_spec.ts

@@ -0,0 +1,50 @@
+/**
+ * @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
+ */
+// tslint:disable:no-big-function
+import { logging } from '@angular-devkit/core';
+import { buildWebpackBrowser } from '../../index';
+import { BASE_OPTIONS, BROWSER_BUILDER_INFO, describeBuilder } from '../setup';
+
+describeBuilder(buildWebpackBrowser, BROWSER_BUILDER_INFO, (harness) => {
+  describe('Option: "subresourceIntegrity"', () => {
+    it(`does not add integrity attribute when not present`, async () => {
+      harness.useTarget('build', {
+        ...BASE_OPTIONS,
+      });
+
+      const { result } = await harness.executeOnce();
+
+      expect(result?.success).toBe(true);
+      harness.expectFile('dist/index.html').content.toContain('integrity=');
+    });
+
+    it(`does not add integrity attribute when 'false'`, async () => {
+      harness.useTarget('build', {
+        ...BASE_OPTIONS,
+        subresourceIntegrity: false,
+      });
+
+      const { result } = await harness.executeOnce();
+
+      expect(result?.success).toBe(true);
+      harness.expectFile('dist/index.html').content.toContain('integrity=');
+    });
+
+    it(`does add integrity attribute when 'true'`, async () => {
+      harness.useTarget('build', {
+        ...BASE_OPTIONS,
+        subresourceIntegrity: true,
+      });
+
+      const { result } = await harness.executeOnce();
+
+      expect(result?.success).toBe(true);
+      harness.expectFile('dist/index.html').content.toMatch(/integrity="\w+-[A-Za-z0-9\/\+=]+"/);
+    });
+  });
+});