[glib] Don't g_test_assert_expected_messages for g_error

[Ryan Lortie <desrt src gnome org>]

commit 8dfb0703298bf8f25f3440967fca348ec71e4253
Author: Ryan Lortie <desrt desrt ca>
Date:   Fri Oct 18 20:40:57 2013 -0400

    Don't g_test_assert_expected_messages for g_error
    
    Don't allow the user to assert for expected g_error().  They need to use
    subprocess for this.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=709615

 glib/gmessages.c     |    1 +
 glib/tests/testing.c |   10 ++++++++++
 2 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/glib/gmessages.c b/glib/gmessages.c
index 7340307..d09552e 100644
--- a/glib/gmessages.c
+++ b/glib/gmessages.c
@@ -1159,6 +1159,7 @@ g_test_expect_message (const gchar    *log_domain,
 
   g_return_if_fail (log_level != 0);
   g_return_if_fail (pattern != NULL);
+  g_return_if_fail (~log_level & G_LOG_LEVEL_ERROR);
 
   expected = g_new (GTestExpectedMessage, 1);
   expected->log_domain = g_strdup (log_domain);
diff --git a/glib/tests/testing.c b/glib/tests/testing.c
index 21f019e..2adc003 100644
--- a/glib/tests/testing.c
+++ b/glib/tests/testing.c
@@ -381,6 +381,15 @@ test_expected_messages_null_domain (void)
 }
 
 static void
+test_expected_messages_expect_error (void)
+{
+  /* make sure we can't try to expect a g_error() */
+  g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL, "*G_LOG_LEVEL_ERROR*");
+  g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_ERROR, "this won't work");
+  g_test_assert_expected_messages ();
+}
+
+static void
 test_expected_messages_extra_warning (void)
 {
   g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_WARNING,
@@ -590,6 +599,7 @@ main (int   argc,
   g_test_add_func ("/misc/expected-messages/subprocess/null-domain", test_expected_messages_null_domain);
   g_test_add_func ("/misc/expected-messages/subprocess/extra-warning", test_expected_messages_extra_warning);
   g_test_add_func ("/misc/expected-messages/subprocess/unexpected-extra-warning", 
test_expected_messages_unexpected_extra_warning);
+  g_test_add_func ("/misc/expected-messages/expect-error", test_expected_messages_expect_error);
 
   g_test_add_func ("/misc/dash-p", test_dash_p);
   g_test_add_func ("/misc/dash-p/child", test_dash_p_child);