Add daily WPE WebKit runs to the CI (Taskcluster).

* WPE WebKit is an upstream port of WebKit that shares much with
WebKitGTK, but there are significant differences between the two
ports. See: https://webkit.org/wpe

* Support for running WPT tests with WPE was added in c9da6f7
See: docs/running-tests/wpewebkit_minibrowser.md

* This commit adds `wpewebkit_minibrowser` runs to the Taskcluster CI
with the same schedule tham the `webkitgtk_minibrowser` ones: daily
for the nightly channel and weekly for the stable and beta channels.

Author: clopez

.taskcluster.yml

@@ -7,7 +7,7 @@ tasks:
     run_task:
       $if: 'tasks_for == "github-push"'
       then:
-        $if: 'event.ref in ["refs/heads/master", "refs/heads/epochs/daily", "refs/heads/epochs/weekly", "refs/heads/triggers/chrome_stable", "refs/heads/triggers/chrome_beta", "refs/heads/triggers/chrome_canary", "refs/heads/triggers/chrome_dev", "refs/heads/triggers/chrome_nightly", "refs/heads/triggers/firefox_stable", "refs/heads/triggers/firefox_beta", "refs/heads/triggers/firefox_nightly", "refs/heads/triggers/firefox_android_nightly", "refs/heads/triggers/webkitgtk_minibrowser_stable", "refs/heads/triggers/webkitgtk_minibrowser_beta", "refs/heads/triggers/webkitgtk_minibrowser_nightly", "refs/heads/triggers/servo_nightly"]'
+        $if: 'event.ref in ["refs/heads/master", "refs/heads/epochs/daily", "refs/heads/epochs/weekly", "refs/heads/triggers/chrome_stable", "refs/heads/triggers/chrome_beta", "refs/heads/triggers/chrome_canary", "refs/heads/triggers/chrome_dev", "refs/heads/triggers/chrome_nightly", "refs/heads/triggers/firefox_stable", "refs/heads/triggers/firefox_beta", "refs/heads/triggers/firefox_nightly", "refs/heads/triggers/firefox_android_nightly", "refs/heads/triggers/webkitgtk_minibrowser_stable", "refs/heads/triggers/webkitgtk_minibrowser_beta", "refs/heads/triggers/webkitgtk_minibrowser_nightly", "refs/heads/triggers/wpewebkit_minibrowser_stable", "refs/heads/triggers/wpewebkit_minibrowser_beta", "refs/heads/triggers/wpewebkit_minibrowser_nightly", "refs/heads/triggers/servo_nightly"]'
         then: true
         else: false
       else:

tools/ci/run_tc.py

@@ -272,7 +272,7 @@ def setup_environment(args):
         install_chrome(args.channel)
 
     # These browsers use dbus for various features.
-    if any(b in args.browser for b in ["chrome", "webkitgtk_minibrowser"]):
+    if any(b in args.browser for b in ["chrome", "webkitgtk_minibrowser", "wpewebkit_minibrowser"]):
         start_dbus()
 
     if args.xvfb:

tools/ci/taskcluster-run.py

@@ -24,7 +24,7 @@ def get_browser_args(product, channel, artifact_path):
     if product == "chrome" or product == "chromium":
         # Taskcluster machines do not have GPUs, so use software rendering via --enable-swiftshader.
         return ["--enable-swiftshader", "--install-browser", "--install-webdriver"]
-    if product == "webkitgtk_minibrowser":
+    if product in ["webkitgtk_minibrowser", "wpewebkit_minibrowser"]:
         # Using 4 parallel jobs gives 4x speed-up even on a 1-core machine and doesn't cause extra timeouts.
         # See: https://github.com/web-platform-tests/wpt/issues/38723#issuecomment-1470938179
         return ["--install-browser", "--processes=4"]
@@ -80,9 +80,11 @@ def main(product, channel, commit_range, artifact_path, wpt_args):
         "--no-pause",
         "--no-restart-on-unexpected",
         "--install-fonts",
-        "--no-headless",
         "--verify-log-full"
     ]
+    # Enable headless mode for WPE MiniBrowser because it can't work under Xvfb/X11 (needs Wayland)
+    wpt_args.append("--headless" if product == "wpewebkit_minibrowser" else "--no-headless")
+
     wpt_args += get_browser_args(product, channel, artifact_path)
 
     # Hack to run servo with one process only for wdspec

tools/ci/tc/tasks/test.yml

@@ -102,6 +102,8 @@ components:
 
   browser-webkitgtk_minibrowser: {}
 
+  browser-wpewebkit_minibrowser: {}
+
   browser-chrome: {}
 
   browser-chromium: {}
@@ -227,6 +229,24 @@ tasks:
               use:
                 - trigger-weekly
                 - trigger-push
+            - vars:
+                browser: wpewebkit_minibrowser
+                channel: nightly
+              use:
+                - trigger-daily
+                - trigger-push
+            - vars:
+                browser: wpewebkit_minibrowser
+                channel: stable
+              use:
+                - trigger-weekly
+                - trigger-push
+            - vars:
+                browser: wpewebkit_minibrowser
+                channel: beta
+              use:
+                - trigger-weekly
+                - trigger-push
             - vars:
                 browser: servo
                 channel: nightly

tools/ci/tc/tests/test_valid.py

@@ -269,6 +269,22 @@ def test_verify_payload():
       'wpt-webkitgtk_minibrowser-nightly-testharness-14',
       'wpt-webkitgtk_minibrowser-nightly-testharness-15',
       'wpt-webkitgtk_minibrowser-nightly-testharness-16',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-1',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-2',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-3',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-4',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-5',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-6',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-7',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-8',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-9',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-10',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-11',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-12',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-13',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-14',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-15',
+      'wpt-wpewebkit_minibrowser-nightly-testharness-16',
       'wpt-servo-nightly-testharness-1',
       'wpt-servo-nightly-testharness-2',
       'wpt-servo-nightly-testharness-3',
@@ -339,6 +355,12 @@ def test_verify_payload():
       'wpt-webkitgtk_minibrowser-nightly-reftest-4',
       'wpt-webkitgtk_minibrowser-nightly-reftest-5',
       'wpt-webkitgtk_minibrowser-nightly-reftest-6',
+      'wpt-wpewebkit_minibrowser-nightly-reftest-1',
+      'wpt-wpewebkit_minibrowser-nightly-reftest-2',
+      'wpt-wpewebkit_minibrowser-nightly-reftest-3',
+      'wpt-wpewebkit_minibrowser-nightly-reftest-4',
+      'wpt-wpewebkit_minibrowser-nightly-reftest-5',
+      'wpt-wpewebkit_minibrowser-nightly-reftest-6',
       'wpt-servo-nightly-reftest-1',
       'wpt-servo-nightly-reftest-2',
       'wpt-servo-nightly-reftest-3',
@@ -359,6 +381,8 @@ def test_verify_payload():
       'wpt-chrome-stable-wdspec-2',
       'wpt-webkitgtk_minibrowser-nightly-wdspec-1',
       'wpt-webkitgtk_minibrowser-nightly-wdspec-2',
+      'wpt-wpewebkit_minibrowser-nightly-wdspec-1',
+      'wpt-wpewebkit_minibrowser-nightly-wdspec-2',
       'wpt-servo-nightly-wdspec-1',
       'wpt-servo-nightly-wdspec-2',
       'wpt-firefox_android-nightly-wdspec-1',
@@ -367,6 +391,7 @@ def test_verify_payload():
       'wpt-chromium-nightly-crashtest-1',
       'wpt-chrome-stable-crashtest-1',
       'wpt-webkitgtk_minibrowser-nightly-crashtest-1',
+      'wpt-wpewebkit_minibrowser-nightly-crashtest-1',
       'wpt-servo-nightly-crashtest-1',
       'wpt-firefox_android-nightly-crashtest-1',
       'wpt-firefox-stable-print-reftest-1',