Extract out setup hook

Author: andyw8

test/ruby_lsp_rails/server_test.rb

@@ -5,25 +5,29 @@
 require "ruby_lsp/ruby_lsp_rails/server"
 
 class ServerTest < ActiveSupport::TestCase
+  setup do
+    @server = RubyLsp::Rails::Server.new
+  end
+
   test "returns nil if model doesn't exist" do
-    response = RubyLsp::Rails::Server.new.resolve_database_info_from_model("Foo")
+    response = @server.resolve_database_info_from_model("Foo")
     assert_nil(response.fetch(:result))
   end
 
   test "returns nil if class is not a model" do
-    response = RubyLsp::Rails::Server.new.resolve_database_info_from_model("Time")
+    response = @server.resolve_database_info_from_model("Time")
     assert_nil(response.fetch(:result))
   end
 
   test "returns nil if class is an abstract model" do
-    response = RubyLsp::Rails::Server.new.resolve_database_info_from_model("ApplicationRecord")
+    response = @server.resolve_database_info_from_model("ApplicationRecord")
     assert_nil(response.fetch(:result))
   end
 
   test "handles older Rails version which don't have `schema_dump_path`" do
     ActiveRecord::Tasks::DatabaseTasks.send(:alias_method, :old_schema_dump_path, :schema_dump_path)
     ActiveRecord::Tasks::DatabaseTasks.undef_method(:schema_dump_path)
-    response = RubyLsp::Rails::Server.new.resolve_database_info_from_model("User")
+    response = @server.resolve_database_info_from_model("User")
     assert_nil(response.fetch(:result)[:schema_file])
   ensure
     ActiveRecord::Tasks::DatabaseTasks.send(:alias_method, :schema_dump_path, :old_schema_dump_path)