feat(schematics): add schematics for jest

.prettierignore

@@ -1,3 +1,4 @@
 tmp
 build
-node_modules
+node_modules
+packages/schematics/src/collection/**/files/*.json

e2e/schematics/jest.test.ts

@@ -0,0 +1,41 @@
+import {
+  newProject,
+  runCLI,
+  newLib,
+  copyMissingPackages,
+  updateFile,
+  readJson,
+  runCommand,
+  runCLIAsync
+} from '../utils';
+
+describe('Jest', () => {
+  beforeAll(() => {
+    newProject();
+    runCLI('generate jest', {
+      silenceError: true
+    });
+    // TODO: remove this hack after there's a version of @nrwl/builders published
+    const packageJson = readJson('package.json');
+    packageJson.devDependencies['@nrwl/builders'] =
+      '../../build/packages/builders';
+    updateFile('package.json', JSON.stringify(packageJson));
+    runCommand('npm install');
+    copyMissingPackages();
+  });
+
+  it(
+    'should be able to generate a testable library using jest',
+    async done => {
+      newLib('jestlib --unit-test-runner jest');
+      await Promise.all([
+        runCLIAsync('generate service test --project jestlib'),
+        runCLIAsync('generate component test --project jestlib')
+      ]);
+      const jestResult = await runCLIAsync('test jestlib');
+      expect(jestResult.stderr).toContain('Test Suites: 3 passed, 3 total');
+      done();
+    },
+    10000
+  );
+});

e2e/utils.ts

@@ -1,4 +1,4 @@
-import { execSync } from 'child_process';
+import { execSync, exec } from 'child_process';
 import { readFileSync, statSync, writeFileSync } from 'fs';
 import * as path from 'path';
 
@@ -84,6 +84,37 @@ function copyNodeModule(path: string, name: string) {
   execSync(`cp -a node_modules/${name} tmp/${path}/node_modules/${name}`);
 }
 
+export function runCommandAsync(
+  command: string,
+  opts = {
+    silenceError: false
+  }
+): Promise<{ stdout: string; stderr: string }> {
+  return new Promise((resolve, reject) => {
+    exec(
+      command,
+      {
+        cwd: `./tmp/proj`
+      },
+      (err, stdout, stderr) => {
+        if (!opts.silenceError && err) {
+          reject(err);
+        }
+        resolve({ stdout, stderr });
+      }
+    );
+  });
+}
+
+export function runCLIAsync(
+  command: string,
+  opts = {
+    silenceError: false
+  }
+): Promise<{ stdout: string; stderr: string }> {
+  return runCommandAsync(`./node_modules/.bin/ng ${command}`, opts);
+}
+
 export function runCLI(
   command?: string,
   opts = {

packages/schematics/src/collection.json

@@ -36,6 +36,19 @@
       "description": "Add NgRx support to a module"
     },
 
+    "jest": {
+      "factory": "./collection/jest",
+      "schema": "./collection/jest/schema.json",
+      "description": "Add Jest configuration to the workspace"
+    },
+
+    "jest-project": {
+      "factory": "./collection/jest-project",
+      "schema": "./collection/jest-project/schema.json",
+      "description": "Add Jest configuration to a project",
+      "hidden": true
+    },
+
     "upgrade-module": {
       "factory": "./collection/upgrade-module",
       "schema": "./collection/upgrade-module/schema.json",

packages/schematics/src/collection/jest-project/files/jest.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  name: '<%= project %>',
+  preset: '<%= offsetFromRoot %>jest.config.js',
+  coverageDirectory: '<%= offsetFromRoot %>coverage/<%= projectRoot %>'
+};

packages/schematics/src/collection/jest-project/files/src/test-setup.ts__tmpl__

@@ -0,0 +1 @@
+import 'jest-preset-angular';

packages/schematics/src/collection/jest-project/files/tsconfig.spec.json

@@ -0,0 +1,10 @@
+{
+  "extends": "<%= offsetFromRoot %>tsconfig.json",
+  "compilerOptions": {
+    "outDir": "<%= offsetFromRoot %>dist/out-tsc/<%= projectRoot %>",
+    "module": "commonjs",
+    "types": ["jest", "node"]
+  },
+  "files": [<% if(!skipSetupFile) { %>"src/test-setup.ts", <% } %>"src/polyfills.ts"],
+  "include": ["**/*.spec.ts", "**/*.d.ts"]
+}

packages/schematics/src/collection/jest-project/index.ts

@@ -0,0 +1,96 @@
+import {
+  Rule,
+  Tree,
+  mergeWith,
+  chain,
+  url,
+  apply,
+  SchematicContext,
+  move,
+  template,
+  noop,
+  filter
+} from '@angular-devkit/schematics';
+import {
+  getProjectConfig,
+  readJsonInTree,
+  updateJsonInTree
+} from '../../utils/ast-utils';
+import { offsetFromRoot } from '../../utils/common';
+import { join, normalize } from '@angular-devkit/core';
+
+export interface JestProjectSchema {
+  project: string;
+  skipSetupFile: boolean;
+}
+
+function generateFiles(options: JestProjectSchema): Rule {
+  return (host, context) => {
+    const projectConfig = getProjectConfig(host, options.project);
+    return mergeWith(
+      apply(url('./files'), [
+        template({
+          tmpl: '',
+          ...options,
+          projectRoot: projectConfig.root,
+          offsetFromRoot: offsetFromRoot(projectConfig.root)
+        }),
+        options.skipSetupFile
+          ? filter(file => file !== '/src/test-setup.ts')
+          : noop(),
+        move(projectConfig.root)
+      ])
+    )(host, context);
+  };
+}
+
+function updateAngularJson(options: JestProjectSchema): Rule {
+  return updateJsonInTree('angular.json', json => {
+    const projectConfig = json.projects[options.project];
+    projectConfig.architect.test = {
+      builder: '@nrwl/builders:jest',
+      options: {
+        jestConfig: join(normalize(projectConfig.root), 'jest.config.js'),
+        tsConfig: join(normalize(projectConfig.root), 'tsconfig.spec.json')
+      }
+    };
+    if (!options.skipSetupFile) {
+      projectConfig.architect.test.options.setupFile = join(
+        normalize(projectConfig.root),
+        'src/test-setup.ts'
+      );
+    }
+    if (projectConfig.architect.lint) {
+      projectConfig.architect.lint.options.tsConfig = [
+        ...projectConfig.architect.lint.options.tsConfig,
+        join(normalize(projectConfig.root), 'tsconfig.spec.json')
+      ];
+    }
+    return json;
+  });
+}
+
+function check(options: JestProjectSchema) {
+  return (host: Tree, context: SchematicContext) => {
+    const projectConfig = getProjectConfig(host, options.project);
+    if (projectConfig.architect.test) {
+      throw new Error(
+        `${options.project} already has a test architect option.`
+      );
+    }
+    const packageJson = readJsonInTree(host, 'package.json');
+    if (!packageJson.devDependencies.jest) {
+      throw new Error(
+        `Your workspace does not have jest installed. Please run "ng generate jest" to setup your workspace to run tests with jest.`
+      );
+    }
+  };
+}
+
+export default function(options: JestProjectSchema): Rule {
+  return chain([
+    check(options),
+    generateFiles(options),
+    updateAngularJson(options)
+  ]);
+}

packages/schematics/src/collection/jest-project/jest-project.spec.ts

@@ -0,0 +1,169 @@
+import { SchematicTestRunner } from '@angular-devkit/schematics/testing';
+import * as path from 'path';
+import { Tree, VirtualTree } from '@angular-devkit/schematics';
+import { createEmptyWorkspace } from '../../utils/testing-utils';
+import { readJsonInTree } from '@nrwl/schematics/src/utils/ast-utils';
+
+describe('lib', () => {
+  const schematicRunner = new SchematicTestRunner(
+    '@nrwl/schematics',
+    path.join(__dirname, '../../collection.json')
+  );
+
+  let appTree: Tree;
+
+  beforeEach(() => {
+    appTree = new VirtualTree();
+    appTree = createEmptyWorkspace(appTree);
+    appTree = schematicRunner.runSchematic('jest', {}, appTree);
+  });
+
+  it('should generate files', () => {
+    appTree = schematicRunner.runSchematic(
+      'lib',
+      {
+        name: 'lib1',
+        unitTestRunner: 'none'
+      },
+      appTree
+    );
+    const resultTree = schematicRunner.runSchematic(
+      'jest-project',
+      {
+        project: 'lib1'
+      },
+      appTree
+    );
+    expect(resultTree.exists('/libs/lib1/src/test-setup.ts')).toBeTruthy();
+    expect(resultTree.exists('/libs/lib1/jest.config.js')).toBeTruthy();
+    expect(resultTree.exists('/libs/lib1/tsconfig.spec.json')).toBeTruthy();
+  });
+
+  it('should alter angular.json', () => {
+    appTree = schematicRunner.runSchematic(
+      'lib',
+      {
+        name: 'lib1',
+        unitTestRunner: 'none'
+      },
+      appTree
+    );
+    const resultTree = schematicRunner.runSchematic(
+      'jest-project',
+      {
+        project: 'lib1'
+      },
+      appTree
+    );
+    const angularJson = readJsonInTree(resultTree, 'angular.json');
+    expect(angularJson.projects.lib1.architect.test).toEqual({
+      builder: '@nrwl/builders:jest',
+      options: {
+        jestConfig: 'libs/lib1/jest.config.js',
+        setupFile: 'libs/lib1/src/test-setup.ts',
+        tsConfig: 'libs/lib1/tsconfig.spec.json'
+      }
+    });
+    expect(angularJson.projects.lib1.architect.lint.options.tsConfig).toContain(
+      'libs/lib1/tsconfig.spec.json'
+    );
+  });
+
+  it('should create a tsconfig.spec.json', () => {
+    appTree = schematicRunner.runSchematic(
+      'lib',
+      {
+        name: 'lib1',
+        unitTestRunner: 'none'
+      },
+      appTree
+    );
+    const resultTree = schematicRunner.runSchematic(
+      'jest-project',
+      {
+        project: 'lib1'
+      },
+      appTree
+    );
+    const tsConfig = readJsonInTree(resultTree, 'libs/lib1/tsconfig.spec.json');
+    expect(tsConfig).toEqual({
+      extends: '../../tsconfig.json',
+      compilerOptions: {
+        module: 'commonjs',
+        outDir: '../../dist/out-tsc/libs/lib1',
+        types: ['jest', 'node']
+      },
+      files: ['src/test-setup.ts', 'src/polyfills.ts'],
+      include: ['**/*.spec.ts', '**/*.d.ts']
+    });
+  });
+
+  describe('--skip-setup-file', () => {
+    it('should generate src/test-setup.ts', () => {
+      appTree = schematicRunner.runSchematic(
+        'lib',
+        {
+          name: 'lib1',
+          unitTestRunner: 'none'
+        },
+        appTree
+      );
+      const resultTree = schematicRunner.runSchematic(
+        'jest-project',
+        {
+          project: 'lib1',
+          skipSetupFile: true
+        },
+        appTree
+      );
+      expect(resultTree.exists('src/test-setup.ts')).toBeFalsy();
+    });
+
+    it('should not list the setup file in angular.json', () => {
+      appTree = schematicRunner.runSchematic(
+        'lib',
+        {
+          name: 'lib1',
+          unitTestRunner: 'none'
+        },
+        appTree
+      );
+      const resultTree = schematicRunner.runSchematic(
+        'jest-project',
+        {
+          project: 'lib1',
+          skipSetupFile: true
+        },
+        appTree
+      );
+      const angularJson = readJsonInTree(resultTree, 'angular.json');
+      expect(
+        angularJson.projects.lib1.architect.test.options.setupFile
+      ).toBeUndefined();
+    });
+
+    it('should not list the setup file in tsconfig.spec.json', () => {
+      appTree = schematicRunner.runSchematic(
+        'lib',
+        {
+          name: 'lib1',
+          unitTestRunner: 'none'
+        },
+        appTree
+      );
+      const resultTree = schematicRunner.runSchematic(
+        'jest-project',
+        {
+          project: 'lib1',
+          skipSetupFile: true
+        },
+        appTree
+      );
+      const tsConfig = readJsonInTree(
+        resultTree,
+        'libs/lib1/tsconfig.spec.json'
+      );
+      expect(tsConfig.files).not.toContain('src/test-setup.ts');
+    });
+  });
+});

packages/schematics/src/collection/jest-project/schema.json

@@ -0,0 +1,21 @@
+{
+  "$schema": "http://json-schema.org/schema",
+  "id": "Nx Jest Project Schematics Schema",
+  "title": "Create Jest Configuration for the workspace",
+  "type": "object",
+  "properties": {
+    "project": {
+      "type": "string",
+      "description": "The name of the project.",
+      "$default": {
+        "$source": "projectName"
+      }
+    },
+    "skipSetupFile": {
+      "type": "boolean",
+      "description": "Skips the setup file required for angular",
+      "default": false
+    }
+  },
+  "required": []
+}

packages/schematics/src/collection/jest/files/jest.config.js

@@ -0,0 +1,10 @@
+module.exports = {
+  testMatch: ['**/+(*.)+(spec|test).+(ts|js)?(x)'],
+  transform: {
+    '^.+\\.(ts|js|html)$': 'jest-preset-angular/preprocessor.js'
+  },
+  resolver: '@nrwl/builders/plugins/jest/resolver',
+  moduleFileExtensions: ['ts', 'js', 'html'],
+  collectCoverage: true,
+  coverageReporters: ['html']
+};

packages/schematics/src/collection/jest/index.ts

@@ -0,0 +1,29 @@
+import {
+  mergeWith,
+  SchematicContext,
+  chain,
+  url
+} from '@angular-devkit/schematics';
+import { NodePackageInstallTask } from '@angular-devkit/schematics/tasks';
+import { updateJsonInTree } from '../../utils/ast-utils';
+import { jestVersion, nxVersion } from '../../lib-versions';
+import { Rule } from '@angular-devkit/schematics';
+
+const updatePackageJson = updateJsonInTree('package.json', json => {
+  json.devDependencies = {
+    ...json.devDependencies,
+    '@nrwl/builders': nxVersion,
+    jest: jestVersion,
+    '@types/jest': jestVersion,
+    'jest-preset-angular': '6.0.0'
+  };
+  return json;
+});
+
+function addInstall(_, context: SchematicContext) {
+  context.addTask(new NodePackageInstallTask());
+}
+
+export default function(): Rule {
+  return chain([mergeWith(url('./files')), updatePackageJson, addInstall]);
+}

packages/schematics/src/collection/jest/jest.spec.ts

@@ -0,0 +1,33 @@
+import { SchematicTestRunner } from '@angular-devkit/schematics/testing';
+import * as path from 'path';
+import { Tree, VirtualTree } from '@angular-devkit/schematics';
+import { createEmptyWorkspace, createLib } from '../../utils/testing-utils';
+import { readJsonInTree } from '@nrwl/schematics/src/utils/ast-utils';
+
+describe('lib', () => {
+  const schematicRunner = new SchematicTestRunner(
+    '@nrwl/schematics',
+    path.join(__dirname, '../../collection.json')
+  );
+
+  let appTree: Tree;
+
+  beforeEach(() => {
+    appTree = new VirtualTree();
+    appTree = createEmptyWorkspace(appTree);
+  });
+
+  it('should generate files', () => {
+    const resultTree = schematicRunner.runSchematic('jest', {}, appTree);
+    expect(resultTree.exists('jest.config.js')).toBeTruthy();
+  });
+
+  it('should add dependencies', () => {
+    const resultTree = schematicRunner.runSchematic('jest', {}, appTree);
+    const packageJson = readJsonInTree(resultTree, 'package.json');
+    expect(packageJson.devDependencies.jest).toBeDefined();
+    expect(packageJson.devDependencies['@nrwl/builders']).toBeDefined();
+    expect(packageJson.devDependencies['@types/jest']).toBeDefined();
+    expect(packageJson.devDependencies['jest-preset-angular']).toBeDefined();
+  });
+});

packages/schematics/src/collection/jest/schema.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "http://json-schema.org/schema",
+  "id": "Nx Jest Schematics Schema",
+  "title": "Create Jest Configuration for the workspace",
+  "type": "object",
+  "properties": {},
+  "required": []
+}

packages/schematics/src/collection/library/index.ts

@@ -5,7 +5,8 @@ import {
   noop,
   Rule,
   Tree,
-  SchematicContext
+  SchematicContext,
+  schematic
 } from '@angular-devkit/schematics';
 import { Schema } from './schema';
 import * as path from 'path';
@@ -33,6 +34,7 @@ import {
 import { formatFiles } from '../../utils/rules/format-files';
 import { updateKarmaConf } from '../../utils/rules/update-karma-conf';
 import { excludeUnnecessaryFiles } from '@nrwl/schematics/src/utils/rules/filter-tree';
+import { join, normalize } from '@angular-devkit/core';
 
 interface NormalizedSchema extends Schema {
   name: string;
@@ -240,6 +242,12 @@ function updateProject(options: NormalizedSchema): Rule {
       host.delete(path.join(options.projectRoot, 'package.json'));
     }
 
+    if (options.unitTestRunner !== 'karma') {
+      host.delete(path.join(options.projectRoot, 'karma.conf.js'));
+      host.delete(path.join(options.projectRoot, 'src/test.ts'));
+      host.delete(path.join(options.projectRoot, 'tsconfig.spec.json'));
+    }
+
     host.overwrite(
       path.join(libRoot, `${options.name}.module.ts`),
       `
@@ -253,26 +261,29 @@ function updateProject(options: NormalizedSchema): Rule {
       export class ${options.moduleName} { }
       `
     );
-    host.create(
-      path.join(libRoot, `${options.name}.module.spec.ts`),
-      `
-import { async, TestBed } from '@angular/core/testing';
-import { ${options.moduleName} } from './${options.name}.module';
 
-describe('${options.moduleName}', () => {
-  beforeEach(async(() => {
-    TestBed.configureTestingModule({
-      imports: [ ${options.moduleName} ]
-    })
-    .compileComponents();
-  }));
-
-  it('should create', () => {
-    expect(${options.moduleName}).toBeDefined();
+    if (options.unitTestRunner !== 'none') {
+      host.create(
+        path.join(libRoot, `${options.name}.module.spec.ts`),
+        `
+  import { async, TestBed } from '@angular/core/testing';
+  import { ${options.moduleName} } from './${options.name}.module';
+  
+  describe('${options.moduleName}', () => {
+    beforeEach(async(() => {
+      TestBed.configureTestingModule({
+        imports: [ ${options.moduleName} ]
+      })
+      .compileComponents();
+    }));
+  
+    it('should create', () => {
+      expect(${options.moduleName}).toBeDefined();
+    });
   });
-});
-      `
-    );
+        `
+      );
+    }
     host.overwrite(
       `${options.projectRoot}/src/index.ts`,
       `
@@ -293,6 +304,16 @@ describe('${options.moduleName}', () => {
           delete fixedProject.architect.build;
         }
 
+        if (options.unitTestRunner !== 'karma') {
+          delete fixedProject.architect.test;
+
+          fixedProject.architect.lint.options.tsConfig = fixedProject.architect.lint.options.tsConfig.filter(
+            path =>
+              path !==
+              join(normalize(options.projectRoot), 'tsconfig.spec.json')
+          );
+        }
+
         json.projects[options.name] = fixedProject;
         return json;
       }),
@@ -309,18 +330,6 @@ describe('${options.moduleName}', () => {
           }
         };
       }),
-      updateJsonInTree(`${options.projectRoot}/tsconfig.spec.json`, json => {
-        return {
-          ...json,
-          extends: `${offsetFromRoot(options.projectRoot)}tsconfig.json`,
-          compilerOptions: {
-            ...json.compilerOptions,
-            outDir: `${offsetFromRoot(options.projectRoot)}dist/out-tsc/${
-              options.projectRoot
-            }`
-          }
-        };
-      }),
       updateJsonInTree(`${options.projectRoot}/tslint.json`, json => {
         return {
           ...json,
@@ -337,22 +346,43 @@ describe('${options.moduleName}', () => {
         };
       }),
       updateNgPackage(options),
-      host => {
-        const karma = host
-          .read(`${options.projectRoot}/karma.conf.js`)
-          .toString();
-        host.overwrite(
-          `${options.projectRoot}/karma.conf.js`,
-          karma.replace(
-            `'../../coverage${options.projectRoot}'`,
-            `'${offsetFromRoot(options.projectRoot)}coverage'`
-          )
-        );
-      }
+      options.unitTestRunner === 'karma' ? updateKarmaConfig(options) : noop()
     ])(host, null);
   };
 }
 
+function updateKarmaConfig(options: NormalizedSchema) {
+  return chain([
+    host => {
+      const karma = host
+        .read(`${options.projectRoot}/karma.conf.js`)
+        .toString();
+      host.overwrite(
+        `${options.projectRoot}/karma.conf.js`,
+        karma.replace(
+          `'../../coverage${options.projectRoot}'`,
+          `'${offsetFromRoot(options.projectRoot)}coverage'`
+        )
+      );
+    },
+    updateJsonInTree(`${options.projectRoot}/tsconfig.spec.json`, json => {
+      return {
+        ...json,
+        extends: `${offsetFromRoot(options.projectRoot)}tsconfig.json`,
+        compilerOptions: {
+          ...json.compilerOptions,
+          outDir: `${offsetFromRoot(options.projectRoot)}dist/out-tsc/${
+            options.projectRoot
+          }`
+        }
+      };
+    }),
+    updateKarmaConf({
+      projectName: options.name
+    })
+  ]);
+}
+
 function updateTsConfig(options: NormalizedSchema): Rule {
   return chain([
     (host: Tree, context: SchematicContext) => {
@@ -396,10 +426,12 @@ export default function(schema: Schema): Rule {
 
       move(options.name, options.projectRoot),
       updateProject(options),
-      updateKarmaConf({
-        projectName: options.name
-      }),
       updateTsConfig(options),
+      options.unitTestRunner === 'jest'
+        ? schematic('jest-project', {
+            project: options.name
+          })
+        : noop(),
 
       options.publishable ? updateLibPackageNpmScope(options) : noop(),
       options.routing && options.lazy

packages/schematics/src/collection/library/library.spec.ts

@@ -47,7 +47,7 @@ describe('lib', () => {
         appTree
       );
       const packageJson = readJsonInTree(tree, '/package.json');
-      expect(packageJson.devDependencies).toBeUndefined();
+      expect(packageJson.devDependencies['ng-packagr']).toBeUndefined();
     });
 
     it('should update package.json when publishable', () => {
@@ -392,4 +392,42 @@ describe('lib', () => {
       });
     });
   });
+
+  describe('--unit-test-runner jest', () => {
+    beforeEach(() => {
+      appTree = schematicRunner.runSchematic('jest', {}, appTree);
+    });
+
+    it('should generate jest configuration', () => {
+      const resultTree = schematicRunner.runSchematic(
+        'lib',
+        { name: 'myLib', unitTestRunner: 'jest' },
+        appTree
+      );
+      expect(resultTree.exists('libs/my-lib/src/test-setup.ts')).toBeTruthy();
+      expect(resultTree.exists('libs/my-lib/jest.config.js')).toBeTruthy();
+      const angularJson = readJsonInTree(resultTree, 'angular.json');
+      expect(angularJson.projects['my-lib'].architect.test.builder).toEqual(
+        '@nrwl/builders:jest'
+      );
+    });
+  });
+
+  describe('--unit-test-runner none', () => {
+    it('should not generate test configuration', () => {
+      const resultTree = schematicRunner.runSchematic(
+        'lib',
+        { name: 'myLib', unitTestRunner: 'none' },
+        appTree
+      );
+      expect(
+        resultTree.exists('libs/my-lib/src/lib/my-lib.module.spec.ts')
+      ).toBeFalsy();
+      expect(resultTree.exists('libs/my-lib/tsconfig.spec.json')).toBeFalsy();
+      expect(resultTree.exists('libs/my-lib/jest.config.js')).toBeFalsy();
+      expect(resultTree.exists('libs/my-lib/karma.config.js')).toBeFalsy();
+      const angularJson = readJsonInTree(resultTree, 'angular.json');
+      expect(angularJson.projects['my-lib'].architect.test).toBeUndefined();
+    });
+  });
 });

packages/schematics/src/collection/library/schema.d.ts

@@ -1,3 +1,5 @@
+import { UnitTestRunner } from '../../utils/test-runners';
+
 export interface Schema {
   name: string;
   skipFormat: boolean;
@@ -14,4 +16,6 @@ export interface Schema {
   lazy?: boolean;
   parentModule?: string;
   tags?: string;
+
+  unitTestRunner: UnitTestRunner;
 }

packages/schematics/src/collection/library/schema.json

@@ -61,6 +61,12 @@
     "tags": {
       "type": "string",
       "description": "Add tags to the library (used for linting)"
+    },
+    "unitTestRunner": {
+      "type": "string",
+      "enum": ["karma", "jest", "none"],
+      "description": "Test runner to use for unit tests",
+      "default": "karma"
     }
   },
   "required": []

packages/schematics/src/collection/ng-new/schema.d.ts

@@ -1,3 +1,5 @@
+import { UnitTestRunner } from '../../utils/test-runners';
+
 export interface Schema {
   directory: string;
   name: string;

packages/schematics/src/lib-versions.ts

@@ -12,6 +12,7 @@ export const latestMigration = '20180507-create-nx-json';
 export const prettierVersion = '1.13.7';
 export const typescriptVersion = '~2.7.2';
 export const rxjsVersion = '^6.0.0';
+export const jestVersion = '^23.0.0';
 export const jasmineMarblesVersion = '0.3.1';
 
 export const libVersions = {

packages/schematics/src/utils/test-runners.ts

@@ -0,0 +1 @@
+export type UnitTestRunner = 'karma' | 'jest' | 'none';

packages/schematics/src/utils/testing-utils.ts

@@ -26,7 +26,13 @@ export function createEmptyWorkspace(tree: Tree): Tree {
     '/angular.json',
     JSON.stringify({ projects: {}, newProjectRoot: '' })
   );
-  tree.create('/package.json', JSON.stringify({}));
+  tree.create(
+    '/package.json',
+    JSON.stringify({
+      dependencies: {},
+      devDependencies: {}
+    })
+  );
   tree.create('/nx.json', JSON.stringify({ npmScope: 'proj', projects: {} }));
   tree.create(
     '/tsconfig.json',