Bug 1795586 - Migrate storage/test/unit/VacuumParticipant.jsm to ESM. r=mconley

Differential Revision: https://phabricator.services.mozilla.com/D159474

storage/test/unit/VacuumParticipant.sys.mjs

@@ -4,8 +4,6 @@
 
 // This testing component is used in test_vacuum* tests.
 
-var EXPORTED_SYMBOLS = ["VacuumParticipant"];
-
 /**
  * Returns a new nsIFile reference for a profile database.
  * @param filename for the database, excluded the .sqlite extension.
@@ -24,7 +22,7 @@ function getDatabase(aFile) {
   return Services.storage.openDatabase(aFile);
 }
 
-function VacuumParticipant() {
+export function VacuumParticipant() {
   this._dbConn = getDatabase(new_db_file("testVacuum"));
   Services.obs.addObserver(this, "test-options");
 }

storage/test/unit/test_vacuum.js

@@ -17,9 +17,9 @@ function load_test_vacuum_component() {
   const CATEGORY_NAME = "vacuum-participant";
   const CONTRACT_ID = "@unit.test.com/test-vacuum-participant;1";
 
-  MockRegistrar.registerJSM(
+  MockRegistrar.registerESM(
     CONTRACT_ID,
-    "resource://test/VacuumParticipant.jsm",
+    "resource://test/VacuumParticipant.sys.mjs",
     "VacuumParticipant"
   );
 

storage/test/unit/xpcshell.ini

@@ -6,7 +6,7 @@ support-files =
   fakeDB.sqlite
   goodDB.sqlite
   locale_collation.txt
-  VacuumParticipant.jsm
+  VacuumParticipant.sys.mjs
 
 [test_retry_on_busy.js]
 [test_bug-365166.js]

testing/modules/MockRegistrar.jsm

@@ -95,9 +95,9 @@ var MockRegistrar = Object.freeze({
     return cid;
   },
 
-  registerJSM(contractID, jsm, symbol) {
+  registerESM(contractID, esmPath, symbol) {
     return this.register(contractID, () => {
-      let exports = ChromeUtils.import(jsm);
+      let exports = ChromeUtils.importESModule(esmPath);
       return new exports[symbol]();
     });
   },