[glib] tests: Don't test g_utf8_to_ucs4_fast too rigorously

[Matthias Clasen <matthiasc src gnome org>]

commit e773acfe9a0f8cf4d67799f6177997bd8a761ede
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Sep 7 14:59:22 2015 -0400

    tests: Don't test g_utf8_to_ucs4_fast too rigorously
    
    The function is documented to assume valid input, and doesn't
    guarantee behavior with invalid input. So don't test that.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=754636

 tests/unicode-encoding.c |   33 ++++++++++++++++++++++++++-------
 1 files changed, 26 insertions(+), 7 deletions(-)
---
diff --git a/tests/unicode-encoding.c b/tests/unicode-encoding.c
index b1dc885..8ac4f95 100644
--- a/tests/unicode-encoding.c
+++ b/tests/unicode-encoding.c
@@ -78,6 +78,16 @@ utf16_count (gunichar2 *a)
 }
 
 static void
+print_ucs4 (const gchar *prefix, gunichar *ucs4, gint ucs4_len)
+{
+  gint i;
+  g_print ("%s ", prefix);
+  for (i = 0; i < ucs4_len; i++)
+    g_print ("%x ", ucs4[i]);
+  g_print ("\n");
+}
+
+static void
 process (gint      line,
         gchar    *utf8,
         Status    status,
@@ -112,7 +122,7 @@ process (gint      line,
 
   if (status == INCOMPLETE)
     {
-      gunichar *ucs4_result;      
+      gunichar *ucs4_result;
 
       ucs4_result = g_utf8_to_ucs4 (utf8, -1, NULL, NULL, &error);
 
@@ -137,31 +147,40 @@ process (gint      line,
   if (status == VALID || status == NOTUNICODE)
     {
       gunichar *ucs4_result;
-      gchar *utf8_result;
 
       ucs4_result = g_utf8_to_ucs4 (utf8, -1, &items_read, &items_written, &error);
       if (!ucs4_result)
        {
-         fail ("line %d: conversion to ucs4 failed: %s\n", line, error->message);
+         fail ("line %d: conversion with status %d to ucs4 failed: %s\n", line, status, error->message);
          return;
        }
-      
+
       if (!ucs4_equal (ucs4_result, ucs4) ||
          items_read != strlen (utf8) ||
          items_written != ucs4_len)
        {
-         fail ("line %d: results of conversion to ucs4 do not match expected.\n", line);
+         fail ("line %d: results of conversion with status %d to ucs4 do not match expected.\n", line, 
status);
+          print_ucs4 ("expected: ", ucs4, ucs4_len);
+          print_ucs4 ("received: ", ucs4_result, items_written);
          return;
        }
 
       g_free (ucs4_result);
+    }
+
+  if (status == VALID)
+     {
+      gunichar *ucs4_result;
+      gchar *utf8_result;
 
       ucs4_result = g_utf8_to_ucs4_fast (utf8, -1, &items_written);
-      
+
       if (!ucs4_equal (ucs4_result, ucs4) ||
          items_written != ucs4_len)
        {
-         fail ("line %d: results of fast conversion to ucs4 do not match expected.\n", line);
+         fail ("line %d: results of fast conversion with status %d to ucs4 do not match expected.\n", line, 
status);
+          print_ucs4 ("expected: ", ucs4, ucs4_len);
+          print_ucs4 ("received: ", ucs4_result, items_written);
          return;
        }