Using Yeoman assertion

package.json

@@ -30,6 +30,7 @@
     "chalk": "^1.0.0",
     "wiredep": "^2.2.2",
     "yeoman-generator": "^0.18.5",
+    "yeoman-assert": "^2.0.0",
     "yosay": "^1.0.0"
   },
   "peerDependencies": {

test/app_slug.js

@@ -3,7 +3,7 @@
 var fs = require('fs');
 var util = require('util');
 var path = require('path');
-var assert = require('assert');
+var assert = require('yeoman-assert');
 var helpers = require('yeoman-generator').test;
 
 describe('Gulp Webapp generator slug name', function () {
@@ -38,7 +38,7 @@ describe('Gulp Webapp generator slug name', function () {
 
     this.webapp.run(function () {
       // Check if all files are created for the test
-      helpers.assertFile(expected);
+      assert.file(expected);
 
       // read JS Files
       var bowerJson = fs.readFileSync('bower.json', 'utf8');

test/gulp_file.js

@@ -3,7 +3,7 @@
 var fs = require('fs');
 var util = require('util');
 var path = require('path');
-var assert = require('assert');
+var assert = require('yeoman-assert');
 var helpers = require('yeoman-generator').test;
 
 describe('Gulp Webapp generator: tasks', function () {

test/sass_feature.js

@@ -2,6 +2,7 @@
 'use strict';
 var path = require('path');
 var helpers = require('yeoman-generator').test;
+var assert = require('yeoman-assert');
 
 describe('Gulp webapp generator: sass feature', function () {
   beforeEach(function (done) {
@@ -33,7 +34,7 @@ describe('Gulp webapp generator: sass feature', function () {
     });
 
     app.run(function () {
-      helpers.assertFile(expected);
+      assert.file(expected);
       done();
     });
   };

test/test.js

@@ -2,6 +2,7 @@
 'use strict';
 var path = require('path');
 var helpers = require('yeoman-generator').test;
+var assert = require('yeoman-assert');
 
 describe('Gulp webapp generator test', function () {
   beforeEach(function (done) {
@@ -44,7 +45,7 @@ describe('Gulp webapp generator test', function () {
     });
 
     this.webapp.run(function () {
-      helpers.assertFile(expected);
+      assert.file(expected);
       done();
     });
   });