test: add test, using ava

Author: 2nthony

circle.yml

@@ -11,6 +11,9 @@ jobs:
       - checkout
       - restore_cache:
           key: dependency-cache-{{ checksum "yarn.lock" }}
+      - run:
+          name: Test
+          command: yarn test
       - run:
           name: Install dependencies
           command: yarn

package.json

@@ -15,7 +15,9 @@
     "lib",
     "utils"
   ],
-  "scripts": {},
+  "scripts": {
+    "test": "ava"
+  },
   "dependencies": {
     "cac": "^6.5.2",
     "cross-spawn": "^6.0.5",
@@ -24,6 +26,7 @@
     "multimatch": "^4.0.0"
   },
   "devDependencies": {
+    "ava": "^2.1.0",
     "husky": "^1.0.0-rc.13",
     "lint-staged": "^7.2.0",
     "prettier": "^1.17.0"

test.js

@@ -0,0 +1,8 @@
+import test from 'ava'
+import spawn from 'cross-spawn'
+
+test('main', t => {
+  const ps = spawn.sync('./bin/cli.js', ['test'])
+  const stdout = ps.stdout.toString()
+  t.is(stdout, '')
+})