sss_utf8_tolower utility function+unit tests

1 files changed, 96 insertions, 0 deletions

diff --git a/src/tests/util-tests.c b/src/tests/util-tests.c
index 52d30277..33406dac 100644
--- a/src/tests/util-tests.c
+++ b/src/tests/util-tests.c
@@ -26,6 +26,7 @@
 #include <talloc.h>
 #include <check.h>
 #include "util/util.h"
+#include "util/sss_utf8.h"
 #include "tests/common.h"
 
 START_TEST(test_parse_args)
@@ -312,6 +313,91 @@ START_TEST(test_size_t_overflow)
 }
 END_TEST
 
+START_TEST(test_utf8_lowercase)
+{
+    const uint8_t munchen_utf8_upcase[] = { 'M', 0xC3, 0x9C, 'N', 'C', 'H', 'E', 'N', 0x0 };
+    const uint8_t munchen_utf8_lowcase[] = { 'm', 0xC3, 0xBC, 'n', 'c', 'h', 'e', 'n', 0x0 };
+    uint8_t *lcase;
+    size_t nlen;
+
+    lcase = sss_utf8_tolower(munchen_utf8_upcase,
+                             strlen((const char *)munchen_utf8_upcase),
+                             &nlen);
+    fail_if(strlen((const char *) munchen_utf8_upcase) != nlen); /* This is not true for utf8 strings in general */
+    fail_if(memcmp(lcase, munchen_utf8_lowcase, nlen));
+    sss_utf8_free(lcase);
+}
+END_TEST
+
+START_TEST(test_utf8_talloc_lowercase)
+{
+    const uint8_t munchen_utf8_upcase[] = { 'M', 0xC3, 0x9C, 'N', 'C', 'H', 'E', 'N', 0x0 };
+    const uint8_t munchen_utf8_lowcase[] = { 'm', 0xC3, 0xBC, 'n', 'c', 'h', 'e', 'n', 0x0 };
+    uint8_t *lcase;
+    size_t nsize;
+
+    TALLOC_CTX *test_ctx;
+    test_ctx = talloc_new(NULL);
+    fail_if(test_ctx == NULL);
+
+    lcase = sss_tc_utf8_tolower(test_ctx, munchen_utf8_upcase,
+                                strlen((const char *) munchen_utf8_upcase),
+                                &nsize);
+    fail_if(memcmp(lcase, munchen_utf8_lowcase, nsize));
+    talloc_free(test_ctx);
+}
+END_TEST
+
+START_TEST(test_utf8_talloc_str_lowercase)
+{
+    const uint8_t munchen_utf8_upcase[] = { 'M', 0xC3, 0x9C, 'N', 'C', 'H', 'E', 'N', 0x0 };
+    const uint8_t munchen_utf8_lowcase[] = { 'm', 0xC3, 0xBC, 'n', 'c', 'h', 'e', 'n', 0x0 };
+    char *lcase;
+
+    TALLOC_CTX *test_ctx;
+    test_ctx = talloc_new(NULL);
+    fail_if(test_ctx == NULL);
+
+    lcase = sss_tc_utf8_str_tolower(test_ctx, (const char *) munchen_utf8_upcase);
+    fail_if(memcmp(lcase, munchen_utf8_lowcase, strlen(lcase)));
+    talloc_free(test_ctx);
+}
+END_TEST
+
+START_TEST(test_utf8_caseeq)
+{
+    const uint8_t munchen_utf8_upcase[] = { 'M', 0xC3, 0x9C, 'N', 'C', 'H', 'E', 'N', 0x0 };
+    const uint8_t munchen_utf8_lowcase[] = { 'm', 0xC3, 0xBC, 'n', 'c', 'h', 'e', 'n', 0x0 };
+    const uint8_t czech_utf8_lowcase[] = { 0xC4, 0x8D, 'e', 'c', 'h', 0x0 };
+    const uint8_t czech_utf8_upcase[] = { 0xC4, 0x8C, 'e', 'c', 'h', 0x0 };
+    const uint8_t czech_utf8_lowcase_neg[] = { 0xC4, 0x8E, 'e', 'c', 'h', 0x0 };
+    errno_t ret;
+
+    ret = sss_utf8_case_eq(munchen_utf8_upcase, munchen_utf8_lowcase);
+    fail_unless(ret == EOK, "Latin 1 Supplement comparison failed\n");
+
+    ret = sss_utf8_case_eq(czech_utf8_upcase, czech_utf8_lowcase);
+    fail_unless(ret == EOK, "Latin Extended A comparison failed\n");
+
+    ret = sss_utf8_case_eq(czech_utf8_upcase, czech_utf8_lowcase_neg);
+    fail_if(ret == EOK, "Negative test succeeded\n");
+}
+END_TEST
+
+START_TEST(test_utf8_check)
+{
+    const char *invalid = "ad\351la\357d";
+    const uint8_t valid[] = { 'M', 0xC3, 0x9C, 'N', 'C', 'H', 'E', 'N', 0x0 };
+    bool ret;
+
+    ret = sss_utf8_check(valid, strlen((const char *) valid));
+    fail_unless(ret == true, "Positive test failed\n");
+
+    ret = sss_utf8_check((const uint8_t *) invalid, strlen(invalid));
+    fail_unless(ret == false, "Negative test succeeded\n");
+}
+END_TEST
+
 Suite *util_suite(void)
 {
     Suite *s = suite_create("util");
@@ -324,7 +410,17 @@ Suite *util_suite(void)
     tcase_add_test (tc_util, test_parse_args);
     tcase_set_timeout(tc_util, 60);
 
+    TCase *tc_utf8 = tcase_create("utf8");
+    tcase_add_test (tc_util, test_utf8_lowercase);
+    tcase_add_test (tc_util, test_utf8_talloc_lowercase);
+    tcase_add_test (tc_util, test_utf8_talloc_str_lowercase);
+    tcase_add_test (tc_util, test_utf8_caseeq);
+    tcase_add_test (tc_util, test_utf8_check);
+
+    tcase_set_timeout(tc_utf8, 60);
+
     suite_add_tcase (s, tc_util);
+    suite_add_tcase (s, tc_utf8);
 
     return s;
 }