Bug 1798621 - P2: Add a11y-no-cache test variant to CI. r=taskgraph-reviewers,ci-and-tooling,jmaher

Differential Revision: https://phabricator.services.mozilla.com/D161347

taskcluster/ci/config.yml

@@ -60,6 +60,8 @@ treeherder:
         'M-1proc': 'Mochitests without e10s or fission'
         'M-a11y-checks': 'Mochitests with accessibility checks enabled'
         'M-a11y-checks-nofis': 'Mochitests with accessibility checks enabled and without fission enabled'
+        'M-a11y-no-cache': 'Mochitests with accessibility cache disabled'
+        'M-a11y-no-cache-1proc': 'Mochitests with accessibility cache, e10s, and fission disabled'
         'M-xorig': 'Mochitests with cross-origin and fission enabled'
         'M-gli': 'Mochitests with WebGL over IPC'
         'M-gli-nofis': 'Mochitests with WebGL over IPC without fission enabled'

taskcluster/ci/test/mochitest.yml

@@ -154,6 +154,7 @@ mochitest-a11y:
         - socketprocess_networking+1proc
         - wayland+1proc
         - webrender-sw+1proc
+        - a11y-no-cache+1proc
     run-on-projects:
         by-variant:
             socketprocess_networking+1proc:
@@ -169,6 +170,7 @@ mochitest-a11y:
                     android-em-7.0-x86_64-qr/debug: built-projects
                     linux.*64-qr/debug: built-projects
                     default: []
+            a11y-no-cache+1proc: ['trunk']
             1proc:
                 by-test-platform:
                     .*-tsan-qr/opt: ['trunk']
@@ -256,10 +258,18 @@ mochitest-browser-a11y:
     treeherder-symbol: M(ba)
     schedules-component: mochitest-browser-a11y
     loopback-video: true
+    variants:
+        - a11y-no-cache
     run-on-projects:
-        by-test-platform:
+        by-variant:
-            android.*: []
+            a11y-no-cache:
-            default: built-projects
+                by-test-platform:
+                    android.*: []
+                    default: ["trunk"]
+            default:
+                by-test-platform:
+                    android.*: []
+                    default: built-projects
     tier: default
     max-run-time: 1800
     mozharness:

taskcluster/ci/test/variants.yml

@@ -292,3 +292,13 @@ wmf-media-engine:
                 - "--tag=media-engine-compatible"
                 - "--setpref=media.wmf.media-engine.enabled=true"
                 - "--setpref=media.wmf.media-engine.channel-decoder.enabled=true"
+
+a11y-no-cache:
+    description: "{description} with accessibility cache disabled"
+    component: "Core::Disability Access APIs"
+    expiration: "2023-05-01"
+    suffix: "a11y-no-cache"
+    merge:
+        mozharness:
+            extra-options:
+                - "--setpref=accessibility.cache.enabled=false"