Create a new subgenerator to fix update command

Now it will correctly update all the gulp task files and not just the ones used
in `generator-statisk`. Also fixed a small issue with a typo in a test.

Should be the final fix needed for #141. Closes #141.

generators/gulp/index.js

@@ -0,0 +1,12 @@
+'use strict';
+
+var generators = require('yeoman-generator');
+
+module.exports = generators.Base.extend({
+  writing: function () {
+    this.fs.copy(
+      this.templatePath('build.js'),
+      this.destinationPath('gulp/tasks/build.js')
+    );
+  }
+});

generators/jekyll/index.js

@@ -73,11 +73,6 @@ module.exports = generators.Base.extend({
       this.destinationPath('Gemfile')
     );
 
-    this.fs.copy(
-      this.templatePath('build.js'),
-      this.destinationPath('gulp/tasks/build.js')
-    );
-
     this.fs.copyTpl(
       this.templatePath('config.yml'),
       this.destinationPath('_config.yml'),

generators/update/index.js

@@ -50,6 +50,12 @@ module.exports = generators.Base.extend({
     }, {
       local: require.resolve('generator-statisk/generators/gulp')
     });
+
+    this.composeWith('jekyllized:gulp', {
+      options: {}
+    }, {
+      local: require.resolve('../gulp')
+    });
   },
 
   install: function () {

package.json

@@ -45,6 +45,7 @@
     "space": true,
     "ignores": [
       "generators/app/templates/**",
+      "generators/gulp/templates/**",
       "generators/jekyll/templates/**"
     ]
   }

test/build.js

@@ -0,0 +1,14 @@
+
+var path = require('path');
+var test = require('ava');
+var assert = require('yeoman-assert');
+var helpers = require('yeoman-test');
+
+test.before(() => {
+  return helpers.run(path.join(__dirname, '../generators/gulp'))
+    .toPromise();
+});
+
+test('creates gulp file for building jekyll', () => {
+  assert.file('gulp/tasks/build.js');
+});

test/gulp.js

@@ -39,7 +39,6 @@ test('creates comment about creation', () => {
 test('creates gulp task files', () => {
   assert.file([
     'gulp/tasks/assets.js',
-    'gulp/tasks/build.js',
     'gulp/tasks/clean.js',
     'gulp/tasks/copy.js',
     'gulp/tasks/fonts.js',

test/update/ghpages.js

@@ -90,7 +90,7 @@ test('does not contain wrong uploading packages', () => {
 test('contains deploy function', () => {
   [
     'const gulp',
-    'const ghpages',
+    'const ghPages',
     'gulp.task(\'upload'
   ].forEach(field => {
     assert.fileContent('gulp/tasks/uploading.js', field);