[gmime] Test EILSEQ in GMimeFilterCharset

[Jeffrey Stedfast <fejj src gnome org>]

commit 1e7a266e04a0cfb5f5c5d15236109ae236c50752
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Sat Dec 16 17:05:02 2017 -0500

    Test EILSEQ in GMimeFilterCharset

 tests/data/filters/chinese.big5.txt  |    9 +++++++++
 tests/data/filters/chinese.utf-8.txt |    9 +++++++++
 tests/test-filters.c                 |    3 ++-
 3 files changed, 20 insertions(+), 1 deletions(-)
---
diff --git a/tests/data/filters/chinese.big5.txt b/tests/data/filters/chinese.big5.txt
new file mode 100644
index 0000000..cfd5381
--- /dev/null
+++ b/tests/data/filters/chinese.big5.txt
@@ -0,0 +1,9 @@
+�򴫦~�j�ЭM���j�����C�N�R�ݧK�ǭn���N�����F�}�C�߸��~�h�Ϩ��ﴻ�d�V�t�s�����δ¡C���n���ݩM�q�ħ@�����N�����Q�[��C�`���ʸܤk���`���I���ۤ��D�u�}�^�Cɴ���e�@�f�Τ��Ϊ嶮�C�ô����ȬٴD���T���n���D�C�J�����t�s�ʩw�Ϳ��C���@�d�����`���M�����v���M�����C�C���̫e�n�A�C�ݵ�¾�k�𫬡C
+
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+
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+
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+�Y�`�A���ݯ��R�i�õh�ਬ�{�ͩP�C�a���n�����P�n�ʽL�������F�e�C�����T�ɦʱ����n�C�y�覨�W�ͪ����k���s�C�w�n�����۵��Ѧ����F�����ܱi���C�v�D�����j���Q�ѧзE���ߡC���^�������ߤȳ̦۹L�ơC���������@�ë��ӯ��������ʸ��ӱj���p�C�������D��ij�ڤj�s�m�g���e�C
diff --git a/tests/data/filters/chinese.utf-8.txt b/tests/data/filters/chinese.utf-8.txt
new file mode 100644
index 0000000..feb5ae1
--- /dev/null
+++ b/tests/data/filters/chinese.utf-8.txt
@@ -0,0 +1,9 @@
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diff --git a/tests/test-filters.c b/tests/test-filters.c
index d270fb7..94cf238 100644
--- a/tests/test-filters.c
+++ b/tests/test-filters.c
@@ -388,7 +388,8 @@ int main (int argc, char **argv)
                return 0;
        
        testsuite_start ("GMimeFilter");
-
+       
+       test_charset_conversion (datadir, "chinese", "utf-8", "big5"); // Note: utf-8 -> big5 drops characters
        test_charset_conversion (datadir, "cyrillic", "utf-8", "cp1251");
        test_charset_conversion (datadir, "cyrillic", "cp1251", "utf-8");
        test_charset_conversion (datadir, "cyrillic", "utf-8", "iso-8859-5");