[glib] contenttype tests: better assertions

[Matthias Clasen <matthiasc src gnome org>]

commit fc828c4de8b8de0e8c8469877f9c148616bb5b96
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Dec 21 11:56:24 2013 -0500

    contenttype tests: better assertions
    
    I recently had to track down why these tests failed. Turned
    out that some rogue package on my system had installed mime
    types that declared all files with 3 letter names to be
    'chemical/x-turbomole-vibrational'.
    This change will make it more obvious what is going on by
    mentioning the mime types in the assertion message.

 gio/tests/contenttype.c |   35 ++++++++++++++++++++++++-----------
 1 files changed, 24 insertions(+), 11 deletions(-)
---
diff --git a/gio/tests/contenttype.c b/gio/tests/contenttype.c
index e9ff2d3..645bddc 100644
--- a/gio/tests/contenttype.c
+++ b/gio/tests/contenttype.c
@@ -1,6 +1,18 @@
 #include <gio/gio.h>
 #include <string.h>
 
+#define g_assert_content_type_equals(s1, s2)                   \
+  do {                                                                 \
+    const char *__s1 = (s1), *__s2 = (s2);                     \
+    if (g_content_type_equals (__s1, __s2)) ;                  \
+    else                                                       \
+      g_assertion_message_cmpstr (G_LOG_DOMAIN,                \
+                                  __FILE__, __LINE__,          \
+                                  G_STRFUNC,                   \
+                                  #s1 " == " #s2,              \
+                                  __s1, " == ", __s2);                 \
+  } while (0)
+
 static void
 test_guess (void)
 {
@@ -15,41 +27,41 @@ test_guess (void)
 
   res = g_content_type_guess ("/etc/", NULL, 0, &uncertain);
   expected = g_content_type_from_mime_type ("inode/directory");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_assert (uncertain);
   g_free (res);
   g_free (expected);
 
   res = g_content_type_guess ("foo.txt", NULL, 0, &uncertain);
   expected = g_content_type_from_mime_type ("text/plain");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_free (res);
   g_free (expected);
 
   res = g_content_type_guess ("foo.desktop", data, sizeof (data) - 1, &uncertain);
   expected = g_content_type_from_mime_type ("application/x-desktop");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_assert (!uncertain);
   g_free (res);
   g_free (expected);
 
   res = g_content_type_guess ("foo.txt", data, sizeof (data) - 1, &uncertain);
   expected = g_content_type_from_mime_type ("text/plain");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_assert (!uncertain);
   g_free (res);
   g_free (expected);
 
   res = g_content_type_guess ("foo", data, sizeof (data) - 1, &uncertain);
   expected = g_content_type_from_mime_type ("text/plain");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_assert (!uncertain);
   g_free (res);
   g_free (expected);
 
   res = g_content_type_guess (NULL, data, sizeof (data) - 1, &uncertain);
   expected = g_content_type_from_mime_type ("application/x-desktop");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_assert (!uncertain);
   g_free (res);
   g_free (expected);
@@ -58,29 +70,30 @@ test_guess (void)
    * but looks like text so it can't be Powerpoint */
   res = g_content_type_guess ("test.pot", (guchar *)"ABC abc", 7, &uncertain);
   expected = g_content_type_from_mime_type ("text/x-gettext-translation-template");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_assert (!uncertain);
   g_free (res);
   g_free (expected);
 
   res = g_content_type_guess ("test.pot", (guchar *)"msgid \"", 7, &uncertain);
   expected = g_content_type_from_mime_type ("text/x-gettext-translation-template");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_assert (!uncertain);
   g_free (res);
   g_free (expected);
 
   res = g_content_type_guess ("test.pot", (guchar *)"\xCF\xD0\xE0\x11", 4, &uncertain);
   expected = g_content_type_from_mime_type ("application/vnd.ms-powerpoint");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   /* we cannot reliably detect binary powerpoint files as long as there is no
-   * defined MIME magic, so do not check uncertain here */
+   * defined MIME magic, so do not check uncertain here
+   */
   g_free (res);
   g_free (expected);
 
   res = g_content_type_guess ("test.otf", (guchar *)"OTTO", 4, &uncertain);
   expected = g_content_type_from_mime_type ("application/x-font-otf");
-  g_assert (g_content_type_equals (expected, res));
+  g_assert_content_type_equals (expected, res);
   g_assert (!uncertain);
   g_free (res);
   g_free (expected);