FIX: Update mapping between locales and Postgres dictionaries. (#7606)

spec/lib/search_spec.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Search do
+
+  context "#ts_config" do
+    it "maps locales to correct Postgres dictionaries" do
+      expect(Search.ts_config).to eq("english")
+      expect(Search.ts_config("en")).to eq("english")
+      expect(Search.ts_config("en_US")).to eq("english")
+      expect(Search.ts_config("pt_BR")).to eq("portuguese")
+      expect(Search.ts_config("tr")).to eq("turkish")
+      expect(Search.ts_config("xx")).to eq("simple")
+    end
+  end
+
+end