lib-charset: Added UTF-7 state checking unit test.

This was an idea of a way to test for a bug in FreeBSD iconv(), but nobody
reported if it did anything. So lets add it here and see.

diff --git a/src/lib-charset/test-charset.c b/src/lib-charset/test-charset.c
index b82539375fbab833f117e4a73b1160c9fd9cf8b9..36d214704d2a33b33204f7db6b4fa9c92866fdda 100644 (file)
--- a/src/lib-charset/test-charset.c
+++ b/src/lib-charset/test-charset.c
@@ -130,6 +130,28 @@ static void test_charset_iconv_crashes(void)
        }
        test_end();
 }
+
+static void test_charset_iconv_utf7_state(void)
+{
+       struct charset_translation *trans;
+       string_t *str = t_str_new(32);
+       unsigned char nextbuf[5+CHARSET_MAX_PENDING_BUF_SIZE+1];
+       size_t size;
+
+       test_begin("charset iconv utf7 state");
+       test_assert(charset_to_utf8_begin("UTF-7", NULL, &trans) == 0);
+       size = 2;
+       test_assert(charset_to_utf8(trans, (const void *)"a+", &size, str) == CHARSET_RET_INCOMPLETE_INPUT);
+       test_assert(strcmp(str_c(str), "a") == 0);
+       test_assert(size == 1);
+       memset(nextbuf, '?', sizeof(nextbuf));
+       memcpy(nextbuf, "+AOQ-", 5);
+       size = sizeof(nextbuf);
+       test_assert(charset_to_utf8(trans, nextbuf, &size, str) == CHARSET_RET_OK);
+       test_assert(strcmp(str_c(str), "a\xC3\xA4???????????") == 0);
+       charset_to_utf8_end(&trans);
+       test_end();
+}
 #endif
 
 int main(void)
@@ -140,6 +162,7 @@ int main(void)
 #ifdef HAVE_ICONV
                test_charset_iconv,
                test_charset_iconv_crashes,
+               test_charset_iconv_utf7_state,
 #endif
                NULL
        };