Bug 1957974 - Add available locales record and perplexity to search-config-v2. r=Standard8

Differential Revision: https://phabricator.services.mozilla.com/D244851

toolkit/components/search/tests/xpcshell/searchconfigs/test_searchconfig_validates.js

@@ -174,6 +174,29 @@ add_task(async function test_search_config_valid_partner_codes() {
   }
 });
 
+add_task(
+  async function test_search_config_all_locales_are_in_available_locales() {
+    let selector = new SearchEngineSelector(() => {});
+    let config = await selector.getEngineConfiguration();
+    let availableLocales = new Set(
+      config.find(entry => entry.recordType == "availableLocales").locales
+    );
+
+    let localesInConfig = SearchTestUtils.extractAvailableLocales(config);
+
+    Assert.deepEqual(
+      Array.from(localesInConfig.difference(availableLocales)),
+      [],
+      "Available locales should have all the locales listed in other parts of the configuration"
+    );
+    Assert.deepEqual(
+      Array.from(availableLocales.difference(localesInConfig)),
+      [],
+      "Available locales should not have any locales not listed in other parts of the configuration"
+    );
+  }
+);
+
 add_task(async function test_search_config_override_validates_to_schema() {
   let selector = new SearchEngineSelector(() => {});