add tests

Author: aminya

package.json

@@ -16,7 +16,7 @@
   "repository": "https://github.com/atom-ide-community/babel-plugin-transform-not-strict",
   "license": "MIT",
   "scripts": {
-    "test": "atom --test spec/test.js",
+    "test": "atom --test spec/spec.js",
     "bump": "ncu -u"
   },
   "peerDependencies": {

spec/spec.js

@@ -0,0 +1,18 @@
+const pluginTester = require('babel-plugin-tester').default
+
+const transformNotStrict = require('../src/index.js')
+
+pluginTester({
+  plugin: transformNotStrict,
+  filename: __filename,
+  tests: [
+    {
+      code: '"not strict"; "use strict";',
+      output:'"not strict";',
+    },
+    {
+      code: '"not strict";',
+      output:'"not strict";',
+    },
+  ]
+})