fix unit tests, use qunit-puppeteer for es6 support

gulpfile.js

@@ -1,8 +1,16 @@
+const pkg = require('./package.json')
+const path = require('path')
+const glob = require('glob')
+const colors = require('colors')
+const yargs = require('yargs')
+const webpack = require('webpack-stream')
+const { runQunitPuppeteer, printResultSummary, printFailedTests } = require('node-qunit-puppeteer')
+
 const gulp = require('gulp')
+const tap = require('gulp-tap')
 const zip = require('gulp-zip')
 const sass = require('gulp-sass')
 const babel = require('gulp-babel')
-const qunit = require('gulp-qunit')
 const header = require('gulp-header')
 const eslint = require('gulp-eslint')
 const uglify = require('gulp-uglify')
@@ -10,9 +18,6 @@ const rename = require('gulp-rename')
 const minify = require('gulp-clean-css')
 const connect = require('gulp-connect')
 const autoprefixer = require('gulp-autoprefixer')
-const yargs = require('yargs')
-const pkg = require('./package.json')
-const webpack = require('webpack-stream');
 
 const root = yargs.argv.root || '.'
 const port = yargs.argv.port || 8000
@@ -33,9 +38,7 @@ const swallowError = function(error) {
 
 gulp.task('js', () => gulp.src(['./js/index.js'])
         .pipe(babel({ presets: ['@babel/preset-env'] }))
-        .pipe(webpack({
-            mode: 'production'
-        }))
+        .pipe(webpack({ mode: 'production' }))
         .on('error', swallowError)
         .pipe(header(license, {pkg: pkg}))
         .pipe(rename('reveal.min.js'))
@@ -62,10 +65,39 @@ gulp.task('css-core', gulp.series(
 
 gulp.task('css', gulp.parallel('css-themes', 'css-core'))
 
+gulp.task('test-qunit', function() {
+
+    let testFiles = glob.sync('test/*.html' )
+
+    return Promise.all( testFiles.map( filename => {
+        return new Promise( ( resolve, reject ) => {
+            runQunitPuppeteer({
+                targetUrl: `file://${path.join(__dirname, filename)}`,
+                timeout: 10000,
+                redirectConsole: true,
+                puppeteerArgs: ['--allow-file-access-from-files']
+            })
+                .then(result => {
+                    console.log(`\n\n${('Testing '+filename+'...').bold.blue}`);
+                    printResultSummary(result, console);
+                    if( result.stats.failed > 0 ) {
+                        printFailedTests(result, console);
+                    }
+
+                    resolve();
+                })
+                .catch(ex => {
+                    console.error(ex);
+                    reject();
+                });
+        } )
+    } ) )
+} )
+
 gulp.task('test', gulp.series(
 
-    () => gulp.src(['./js/**', 'gulpfile.js']).pipe(eslint()).pipe(eslint.format())
-    // () => gulp.src(['./test/*.html']).pipe(qunit())
+    () => gulp.src(['./js/**', 'gulpfile.js']).pipe(eslint()).pipe(eslint.format()),
+    'test-qunit'
 
 ))