fix(schematics): fix setting custom module to add the calendar imports to

Author: mattlewis92

projects/angular-calendar/schematics/ng-add/index.spec.ts

@@ -87,6 +87,22 @@ describe('angular-calendar schematics', () => {
     expect(rootModule).contain(calendarModuleImport);
   });
 
+  it('should import angular-calendar module to root module when passed as an option', async () => {
+    const rootModulePath = `/projects/${projectName}/src/app/app.module.ts`;
+    tree = await runner
+      .runSchematicAsync('ng-add', {
+        ...defaultOptions,
+        module: 'src/app/app.module.ts'
+      }, appTree)
+      .toPromise();
+    expect(tree.files).contain(rootModulePath);
+
+    const rootModule = tree.readContent(rootModulePath);
+
+    const calendarModuleImport = `import { CalendarModule, DateAdapter } from 'angular-calendar';`;
+    expect(rootModule).contain(calendarModuleImport);
+  });
+
   it('should add angular-calendar css to architect builder', async () => {
     tree = await runner
       .runSchematicAsync('ng-add', defaultOptions, appTree)

projects/angular-calendar/schematics/ng-add/index.ts

@@ -3,7 +3,7 @@ import {
   Rule,
   SchematicContext,
   Tree,
-  chain
+  chain,
 } from '@angular-devkit/schematics';
 import { NodePackageInstallTask } from '@angular-devkit/schematics/tasks';
 import { getWorkspace } from '@schematics/angular/utility/config';
@@ -15,6 +15,7 @@ import {
   NodeDependency,
   NodeDependencyType
 } from '@schematics/angular/utility/dependencies';
+import { normalize } from '@angular-devkit/core';
 
 import {
   addModuleImportToRootModule,
@@ -109,8 +110,9 @@ function addModuleToImports(options: Schema): Rule {
     );
     const mainPath = getProjectMainFile(project);
     const appModulePath = options.module
-      ? options.module
+      ? normalize(project.root + '/' + options.module)
       : getAppModulePath(host, mainPath);
+
     const moduleName = `CalendarModule.forRoot({ provide: DateAdapter, useFactory: ${
       options.dateAdapter === 'moment'
         ? 'momentAdapterFactory'

projects/angular-calendar/schematics/ng-add/schema.json

@@ -24,7 +24,7 @@
     "module": {
       "type": "string",
       "description": "Where to add the module import",
-      "x-prompt": "Please enter a path to the NgModule that will use the calendar (relative to the root project directory, for example src/app/app.module.ts)"
+      "x-prompt": "Please enter a path to the NgModule that will use the calendar. It should be relative to the root project directory, for example src/app/app.module.ts (optional, will use the root app module if not specified)"
     },
     "projectName": {
       "type": "string",