Build: Run tests on Travis on FirefoxHeadless as well

Also, run them on both ChromeHeadless & FirefoxHeadless locally on
`grunt karma:main`.

Plus, so far, the chrome addons were installed for all the jobs, even
the ones that weren't used for browser testing. Changing that makes
those jobs faster.

Closes gh-4524

diff --git a/.travis.yml b/.travis.yml
index 10cef4a65f06da3ac86e9e89d89ecb9d1804796b..97d54454f5b71abb0eb20779c56a3581a84fb10a 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,14 +4,17 @@ node_js:
 - "8"
 - "10"
 - "12"
-addons:
-  chrome: stable
 env:
   - NPM_SCRIPT=test:browserless
 matrix:
   include:
     # Run browser tests only on one Node.js version to save time.
-    - node_js: "10"
-      env: NPM_SCRIPT=test:browser
+    - node_js: "12"
+      env:
+        - NPM_SCRIPT="test:browser"
+        - BROWSERS="ChromeHeadless,FirefoxHeadless"
+      addons:
+        chrome: stable
+        firefox: latest
 script:
   - npm run $NPM_SCRIPT

diff --git a/Gruntfile.js b/Gruntfile.js
index e740690afd85492ee405c4b538424b30b1264cbd..7f21bf61364301ffdcbc62acf8a5a1f0f795a348 100644 (file)
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -13,8 +13,7 @@ module.exports = function( grunt ) {
        }
 
        var fs = require( "fs" ),
-               gzip = require( "gzip-js" ),
-               isTravis = process.env.TRAVIS;
+               gzip = require( "gzip-js" );
 
        if ( !grunt.option( "filename" ) ) {
                grunt.option( "filename", "jquery.js" );
@@ -191,9 +190,7 @@ module.exports = function( grunt ) {
                                singleRun: true
                        },
                        main: {
-
-                               // The Chrome sandbox doesn't work on Travis.
-                               browsers: [ isTravis ? "ChromeHeadlessNoSandbox" : "ChromeHeadless" ]
+                               browsers: [ "ChromeHeadless", "FirefoxHeadless" ]
                        },
 
                        jsdom: {