WebdriverIO should be able to run Chrome headlessly

Chrome 59 introduced an headless mode, in this mode it does not need any
DISPLAY (Xorg, Xvfb...). That achieved by passing to chrome:

 --headless

Use headless when DISPLAY is not available. One can switch to headless
by simply unsetting the environment variable: unset(DISPLAY).

Bug: T167507
Signed-off-by: Antoine Musso <hashar@free.fr>
Change-Id: Id5424eafb20112fd74d472b8cef02cb15cafff89

diff --git a/tests/selenium/README.md b/tests/selenium/README.md
index 2dbf271..b15d407 100644 (file)
--- a/tests/selenium/README.md
+++ b/tests/selenium/README.md
@@ -21,6 +21,11 @@ Set up MediaWiki-Vagrant:
 
     npm run selenium
 
+By default, Chrome will run in headless mode. If you want to see Chrome, set DISPLAY
+environment variable to any value:
+
+    DISPLAY=:1 npm run selenium
+
 To run only one file (for example page.js), you first need to spawn the chromedriver:
 
     chromedriver --url-base=wd/hub --port=4444

diff --git a/tests/selenium/wdio.conf.js b/tests/selenium/wdio.conf.js
index 5eba0e0..f253d45 100644 (file)
--- a/tests/selenium/wdio.conf.js
+++ b/tests/selenium/wdio.conf.js
@@ -84,9 +84,10 @@ exports.config = {
                maxInstances: 1,
                //
                browserName: 'chrome',
-               // Since Chrome v57 https://bugs.chromium.org/p/chromedriver/issues/detail?id=1625
                chromeOptions: {
-                       args: [ '--enable-automation' ]
+                       // Run headless when there is no DISPLAY
+                       // --headless: since Chrome 59 https://chromium.googlesource.com/chromium/src/+/59.0.3030.0/headless/README.md
+                       args: process.env.DISPLAY ? [] : [ '--headless' ]
                }
        } ],
        //