feat(related-products): add testing driver module (#1821)

libs/related-products/driver/testing/src/public_api.ts

@@ -1,2 +1 @@
-// TODO: implement
-export {};
+export { DaffRelatedProductsTestingDriverModule } from './testing.module';

libs/related-products/driver/testing/src/testing.module.ts

@@ -0,0 +1,31 @@
+import { CommonModule } from '@angular/common';
+import {
+  NgModule,
+  ModuleWithProviders,
+} from '@angular/core';
+
+import { DAFF_PRODUCT_EXTRA_FACTORIES } from '@daffodil/product/testing';
+import { DaffRelatedProductFactory } from '@daffodil/related-products/testing';
+
+/**
+ * Module for providing the related product fields to the product extension factory.
+ */
+@NgModule({
+  imports: [
+    CommonModule,
+  ],
+})
+export class DaffRelatedProductsTestingDriverModule {
+  static forRoot(): ModuleWithProviders<DaffRelatedProductsTestingDriverModule> {
+    return {
+      ngModule: DaffRelatedProductsTestingDriverModule,
+      providers: [
+        {
+          provide: DAFF_PRODUCT_EXTRA_FACTORIES,
+          useExisting: DaffRelatedProductFactory,
+          multi: true,
+        },
+      ],
+    };
+  }
+}