add unit test: add webpack 2 unit test

package.json

@@ -4,7 +4,9 @@
   "description": "EJS webpack loader (without frontend dependencies)",
   "main": "index.js",
   "scripts": {
-    "test": "cd test && ../node_modules/.bin/webpack && node bundle.js"
+    "test": "npm run test:webpack1 && npm run test:webpack2",
+    "test:webpack1": "npm install -q [email protected] && webpack --config test/webpack1.config.js && node test/bundle.js",
+    "test:webpack2": "npm install -q [email protected] && webpack --config test/webpack2.config.js && node test/bundle.js"
   },
   "repository": {
     "type": "git",
@@ -30,7 +32,6 @@
     "uglify-js": "~2.6.1"
   },
   "devDependencies": {
-    "node-libs-browser": "^0.5.0",
-    "webpack": "^1.9.4"
+    "node-libs-browser": "^0.5.0"
   }
 }

test/webpack.config.js → test/webpack1.config.js

@@ -1,5 +1,5 @@
 module.exports = {
-  entry: "./app.js",
+  entry: "./test/app.js",
   cache: false,
   output: {
     path: __dirname,

test/webpack2.config.js

@@ -0,0 +1,23 @@
+module.exports = {
+  entry: "./test/app.js",
+  cache: false,
+  output: {
+    path: __dirname,
+    filename: "bundle.js"
+  },
+  module: {
+    rules: [{
+      test: /\.(ejs)$/,
+      use: {
+        loader: require.resolve('../'),
+        options: {
+          htmlmin: true,
+          htmlminOptions: {
+            removeComments: true,
+          }
+        },
+      },
+    }]
+  }
+
+}