cli: added app:test command

packages/cli/config/jest.js

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2020 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+// If the package has it's own jest config, we use that instead. It will have to
+// manually extend @spotify/web-scripts/config/jest.config.js that is desired
+if (fs.existsSync('jest.config.js')) {
+  module.exports = require(path.resolve('jest.config.js'));
+} else {
+  module.exports = {
+    // We base the jest config on web-scripts, it's pretty flat so we skip any complex merging of config objects
+    // Config can be found here: https://github.com/spotify/web-scripts/blob/master/packages/web-scripts/config/jest.config.js
+    ...require('@spotify/web-scripts/config/jest.config.js'),
+
+    // Use src/setupTests.ts as the default location for configuring test env
+    setupFilesAfterEnv: ['<rootDir>/setupTests.ts'],
+
+    // If the package has a jest object in package.json we merge that config in. This is the recommended
+    // location for configuring tests.
+    ...require(path.resolve('package.json')).jest,
+  };
+}

packages/cli/src/commands/app/testCommand.ts

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2020 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Command } from 'commander';
+import { resolve as resolvePath } from 'path';
+import { run } from '../../helpers/run';
+
+export default async (cmd: Command) => {
+  const args = [
+    'test',
+    '--config',
+    resolvePath(__dirname, '../../../config/jest.js'),
+  ];
+
+  if (cmd.watch) {
+    args.push('--watch');
+  }
+  if (cmd.coverage) {
+    args.push('--coverage');
+  }
+
+  await run('web-scripts', args, { stdio: 'inherit' });
+};

packages/cli/src/index.ts

@@ -20,6 +20,7 @@ import fs from 'fs';
 import createPluginCommand from './commands/createPlugin';
 import watch from './commands/watch-deps';
 import appLint from './commands/app/lint';
+import appTest from './commands/app/testCommand';
 import pluginBuild from './commands/plugin/build';
 import pluginLint from './commands/plugin/lint';
 import pluginServe from './commands/plugin/serve';
@@ -37,6 +38,13 @@ const main = (argv: string[]) => {
     .description('Lint an app')
     .action(actionHandler(appLint));
 
+  program
+    .command('app:test')
+    .option('--watch', 'Enable watch mode')
+    .option('--coverage', 'Report test coverage')
+    .description('Run all tests for an app')
+    .action(actionHandler(appTest));
+
   program
     .command('create-plugin')
     .description('Creates a new plugin in the current repository')