tests: enable tests for generators (#2063)

Author: snitin315

packages/generators/__tests__/addon-generator.test.ts

@@ -1,6 +1,4 @@
-jest.setMock('@webpack-cli/utils', {
-    getPackageManager: jest.fn(),
-});
+jest.mock('webpack-cli/lib/utils/get-package-manager', () => jest.fn());
 
 import fs from 'fs';
 import path from 'path';
@@ -10,8 +8,7 @@ import addonGenerator from '../src/addon-generator';
 
 const { getPackageManager } = utils;
 
-// TODO: enable after jest release
-describe.skip('addon generator', () => {
+describe('addon generator', () => {
     let gen, installMock, packageMock;
     const genName = 'test-addon';
     const testAssetsPath = path.join(__dirname, 'test-assets');

packages/generators/__tests__/utils/languageSupport.test.ts

@@ -1,8 +1,7 @@
 import language, { LangType, getBabelLoader, getTypescriptLoader } from '../../lib/utils/languageSupport';
 import { CustomGenerator } from '../../lib/types';
 
-// TODO: enable after jest release
-describe.skip('languageSupport', () => {
+describe('languageSupport', () => {
     const getMockGenerator = (): CustomGenerator => {
         const gen = new CustomGenerator(null, null);
         gen.entryOption = "'./path/to/index.js'";

packages/generators/__tests__/utils/styleSupport.test.ts

@@ -1,8 +1,7 @@
 import style, { StylingType } from '../../lib/utils/styleSupport';
 import { CustomGenerator } from '../../lib/types';
 
-// TODO: enable after jest release
-describe.skip('styleSupport', () => {
+describe('styleSupport', () => {
     const getMockGenerator = (): CustomGenerator => {
         const gen = new CustomGenerator(null, null);
         gen.dependencies = [];