test: add test

Author: morganney

__tests__/purge.js

@@ -15,6 +15,9 @@ describe('purge', () => {
   it('removes imports for Debug', () => {
     expect(purge("import { Debug } from 'webpack-strip-debug-loader'")).toBe('\n')
     expect(purge('import {Debug} from "webpack-strip-debug-loader"')).toBe('\n')
+    expect(purge(`import {
+      Debug
+    } from 'webpack-strip-debug-loader'`)).toBe('\n')
   })
 
   it('removes requires for Debug', () => {