[libgames-support] score: Split some test code into its own function

[Michael Catanzaro <mcatanzaro src gnome org>]

commit e35d5c828cab396b35ac144314d9425fad6d1a0d
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Sat Feb 13 16:06:59 2016 -0600

    score: Split some test code into its own function

 tests/test-scores.vala |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/tests/test-scores.vala b/tests/test-scores.vala
index 682dd98..e0f4691 100644
--- a/tests/test-scores.vala
+++ b/tests/test-scores.vala
@@ -56,18 +56,21 @@ private void create_scores ()
     add_score_sync (context, 24, cat);
 }
 
+private string get_score_directory_name ()
+{
+    return Path.build_filename (Environment.get_user_data_dir (), "libgames-scores-test", "scores", null);
+}
+
 private string get_score_filename_for_category (string category_name)
 {
-    var base_name = "libgames-scores-test";
-    var user_score_dir = Path.build_filename (Environment.get_user_data_dir (), base_name, "scores", null);
-    return Path.build_filename (user_score_dir, category_name);
+    return Path.build_filename (get_score_directory_name (), category_name);
 }
 
 private void delete_scores ()
 {
     try
     {
-        var directory_name = get_score_filename_for_category ("");
+        var directory_name = get_score_directory_name ();
         var directory = File.new_for_path (directory_name);
         var enumerator = directory.enumerate_children (FileAttribute.STANDARD_NAME, 0);