Bug 1762444 - Make no-addtask-setup eslint rule case-insensitive. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D150329

tools/lint/eslint/eslint-plugin-mozilla/lib/rules/no-addtask-setup.js

@@ -9,9 +9,9 @@
 
 "use strict";
 
-// -----------------------------------------------------------------------------
-// Rule Definition
-// -----------------------------------------------------------------------------
+function isNamedLikeSetup(name) {
+  return name.toLowerCase() === "setup";
+}
 
 module.exports = {
   meta: {
@@ -27,7 +27,7 @@ module.exports = {
           if (
             arg.type !== "FunctionExpression" ||
             !arg.id ||
-            arg.id.name !== "setup"
+            !isNamedLikeSetup(arg.id.name)
           ) {
             return;
           }

tools/lint/eslint/eslint-plugin-mozilla/tests/no-addtask-setup.js

@@ -63,5 +63,12 @@ ruleTester.run("no-addtask-setup", rule, {
         "Do not use add_task() for setup, use add_setup() instead."
       ),
     },
+    {
+      code: "add_task(async function setUp() {});",
+      output: "add_setup(async function() {});",
+      errors: callError(
+        "Do not use add_task() for setup, use add_setup() instead."
+      ),
+    },
   ],
 });