test: add test-plugin script

README.md

@@ -25,4 +25,26 @@ cd test-app
 yarn serve
 ```
 
+### Testing Tips
+
+The full test suite is rather slow, because it has a number of e2e tests that performs full webpack builds of actual projects. To limit the tests to only the plugin / files you are working on, you can use the `test-changed` script, which automatically runs only tests that are related to the files that have been modified/added since the last commit:
+
+``` sh
+yarn test-changed
+```
+
+Alternatively, you can run tests for a specific plugin (note this only matches files ending in `.spec.js` in the given plugin):
+
+``` sh
+yarn test-plugin pwa
+```
+
+Or, just specify your own regex:
+
+``` sh
+yarn test <fileRegex>
+```
+
+### Plugin Development
+
 See [dedicated section in docs](https://github.com/vuejs/vue-cli/tree/next/docs/Plugin.md).

package.json

@@ -7,7 +7,9 @@
   "scripts": {
     "test": "jest --env node --runInBand",
     "test-changed": "node scripts/testChanged.js",
+    "test-plugin": "node scripts/testPlugin.js",
     "posttest": "yarn clean",
+    "posttest-changed": "yarn clean",
     "lint": "eslint --fix packages/**/*.js packages/**/bin/* test/**/*.js",
     "clean": "rimraf packages/test/*",
     "sync": "node scripts/syncDeps.js",

scripts/testPlugin.js

@@ -0,0 +1,17 @@
+const execa = require('execa')
+
+const plugins = process.argv.slice(2)
+const regex = new RegExp(`.*cli-plugin-(${plugins.join('|')})/.*\\.spec\\.js$`)
+
+;(async () => {
+  await execa('jest', [
+    '--env', 'node',
+    '--runInBand',
+    regex.toString().slice(1, -1)
+  ], {
+    stdio: 'inherit'
+  })
+})().catch(err => {
+  console.error(err)
+  process.exit(1)
+})