[vala] tests: Replace test for bug 743877 using g_get_filename_charsets()

[Rico Tzschichholz <ricotz src gnome org>]

commit 752dd3626c58dc77dfd0d89e89a843615f825636
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Mar 18 19:57:35 2015 +0100

    tests: Replace test for bug 743877 using g_get_filename_charsets()
    
    Preserve compatibility with glib >= 2.24

 tests/methods/bug743877.vala |    8 +++-----
 vapi/glib-2.0.vapi           |    1 +
 2 files changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/tests/methods/bug743877.vala b/tests/methods/bug743877.vala
index 9049724..127aaf0 100644
--- a/tests/methods/bug743877.vala
+++ b/tests/methods/bug743877.vala
@@ -1,11 +1,9 @@
 void main () {
        Intl.setlocale ();
 
-       string input_str = "Álvaro";
-       string[] alternates;
-       var tokens = input_str.tokenize_and_fold (null, out alternates);
+       string[] charsets;
+       var is_utf8 = GLib.get_filename_charsets (out charsets);
 
-       assert ("álvaro" in tokens);
-       assert ("alvaro" in alternates);
+       assert (charsets.length != -1);
 }
 
diff --git a/vapi/glib-2.0.vapi b/vapi/glib-2.0.vapi
index d0c55d7..aa46909 100644
--- a/vapi/glib-2.0.vapi
+++ b/vapi/glib-2.0.vapi
@@ -2266,6 +2266,7 @@ namespace GLib {
 
        public static string convert (string str, ssize_t len, string to_codeset, string from_codeset, out 
size_t bytes_read = null, out size_t bytes_written = null) throws ConvertError;
        public static bool get_charset (out unowned string charset);
+       public static bool get_filename_charsets ([CCode (array_length = false, array_null_terminated = 
true)] out string[] charsets);
 
        [SimpleType]
        public struct IConv {