[gmime] Added unit test for GMimeFilterWindows

[Jeffrey Stedfast <fejj src gnome org>]

commit 7afed8e7140ddb8826b4b8576d50c542ec311154
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Sun Dec 17 10:05:09 2017 -0500

    Added unit test for GMimeFilterWindows

 tests/data/filters/french-fable.cp1252.txt |   18 ++++++++++++
 tests/test-filters.c                       |   42 ++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+), 0 deletions(-)
---
diff --git a/tests/data/filters/french-fable.cp1252.txt b/tests/data/filters/french-fable.cp1252.txt
new file mode 100644
index 0000000..6af04b6
--- /dev/null
+++ b/tests/data/filters/french-fable.cp1252.txt
@@ -0,0 +1,18 @@
+Ma�tre Corbeau, sur un arbre perch�,
+Tenait en son bec un fromage.
+Ma�tre Renard, par l�odeur all�ch�,
+Lui tint � peu pr�s ce langage :
+� H� ! bonjour, Monsieur du Corbeau.
+Que vous �tes joli ! Que vous me semblez beau !
+Sans mentir, si votre ramage
+Se rapporte � votre plumage,
+Vous �tes le Ph�nix des h�tes de ces bois. �
+A ces mots le Corbeau ne se sent pas de joie ;
+Et pour montrer sa belle voix,
+Il ouvre un large bec, laisse tomber sa proie.
+Le Renard s�en saisit, et dit : � Mon bon Monsieur,
+Apprenez que tout flatteur
+Vit aux d�pens de celui qui l��coute :
+Cette le�on vaut bien un fromage, sans doute. �
+Le Corbeau, honteux et confus,
+Jura, mais un peu tard, qu�on ne l�y prendrait plus.
diff --git a/tests/test-filters.c b/tests/test-filters.c
index d9c9ff1..0144a6f 100644
--- a/tests/test-filters.c
+++ b/tests/test-filters.c
@@ -365,6 +365,46 @@ error:
        g_byte_array_free (actual, TRUE);
 }
 
+static void
+test_windows (const char *datadir, const char *filename, const char *claimed, const char *expected)
+{
+       const char *what = "GMimeFilterWindows";
+       GMimeStream *stream;
+       GMimeFilter *filter;
+       const char *actual;
+       char *path;
+       
+       testsuite_check ("%s", what);
+       
+       filter = g_mime_filter_windows_new (claimed);
+       
+       stream = g_mime_stream_null_new ();
+       path = g_build_filename (datadir, filename, NULL);
+       pump_data_through_filter (filter, path, stream, TRUE, TRUE);
+       g_object_unref (stream);
+       g_free (path);
+       
+       actual = g_mime_filter_windows_real_charset ((GMimeFilterWindows *) filter);
+       
+       if (strcmp (expected, actual) != 0) {
+               testsuite_check_failed ("%s failed: charsets do not match: expected=%s; actual=%s",
+                                       what, expected, actual);
+               goto error;
+       }
+       
+       if (!g_mime_filter_windows_is_windows_charset ((GMimeFilterWindows *) filter)) {
+               testsuite_check_failed ("%s failed: is_windows_charset returned FALSE", what);
+               goto error;
+       }
+       
+       testsuite_check_passed ();
+       
+error:
+       
+       g_mime_filter_reset (filter);
+       g_object_unref (filter);
+}
+
 int main (int argc, char **argv)
 {
        const char *datadir = "data/filters";
@@ -408,6 +448,8 @@ int main (int argc, char **argv)
        
        test_smtp_data (datadir, "smtp-input.txt", "smtp-output.txt");
        
+       test_windows (datadir, "french-fable.cp1252.txt", "iso-8859-1", "windows-cp1252");
+       
        testsuite_end ();
        
        g_mime_shutdown ();