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-rw-r--r--src/lib/test-unichar.c185
1 files changed, 185 insertions, 0 deletions
diff --git a/src/lib/test-unichar.c b/src/lib/test-unichar.c
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+/* Copyright (c) 2007-2018 Dovecot authors, see the included COPYING file */
+
+#include "test-lib.h"
+#include "str.h"
+#include "buffer.h"
+#include "unichar.h"
+
+static void test_unichar_uni_utf8_strlen(void)
+{
+ static const char input[] = "\xC3\xA4\xC3\xA4\0a";
+
+ test_begin("uni_utf8_strlen()");
+ test_assert(uni_utf8_strlen(input) == 2);
+ test_end();
+
+ test_begin("uni_utf8_strlen_n()");
+ test_assert(uni_utf8_strlen_n(input, 1) == 0);
+ test_assert(uni_utf8_strlen_n(input, 2) == 1);
+ test_assert(uni_utf8_strlen_n(input, 3) == 1);
+ test_assert(uni_utf8_strlen_n(input, 4) == 2);
+ test_end();
+}
+
+static void test_unichar_uni_utf8_partial_strlen_n(void)
+{
+ static const char input[] = "\xC3\xA4\xC3\xA4\0a";
+ size_t pos;
+
+ test_begin("uni_utf8_partial_strlen_n()");
+ test_assert(uni_utf8_partial_strlen_n(input, 1, &pos) == 0 && pos == 0);
+ test_assert(uni_utf8_partial_strlen_n(input, 2, &pos) == 1 && pos == 2);
+ test_assert(uni_utf8_partial_strlen_n(input, 3, &pos) == 1 && pos == 2);
+ test_assert(uni_utf8_partial_strlen_n(input, 4, &pos) == 2 && pos == 4);
+ test_assert(uni_utf8_partial_strlen_n(input, 5, &pos) == 3 && pos == 5);
+ test_assert(uni_utf8_partial_strlen_n(input, 6, &pos) == 4 && pos == 6);
+ test_end();
+}
+
+static void test_unichar_valid_unicode(void)
+{
+ struct {
+ const char *input;
+ bool valid;
+ unichar_t expected;
+ } test_cases[] = {
+ { "a", TRUE, 'a' },
+ { "\xc3\xb1", TRUE, 0x00F1 }, /* U+00F1 */
+ { "\xc3\x28", FALSE, 0x0 }, /* has invalid 2nd octet */
+ { "\xa0\xa1", FALSE, 0x0 }, /* invalid sequence identifier */
+ { "\xed\xb2\x80", FALSE, 0x0 }, /* UTF-8B */
+ { "\xed\xa0\x80", FALSE, 0x0 }, /* surrogate halves, U+D800 .. */
+ { "\xed\xa0\x80", FALSE, 0x0 },
+ { "\xed\xa1\x80", FALSE, 0x0 },
+ { "\xed\xa2\x80", FALSE, 0x0 },
+ { "\xed\xa3\x80", FALSE, 0x0 },
+ { "\xed\xa4\x80", FALSE, 0x0 },
+ { "\xed\xa5\x80", FALSE, 0x0 },
+ { "\xed\xa6\x80", FALSE, 0x0 },
+ { "\xed\xa7\x80", FALSE, 0x0 },
+ { "\xed\xa8\x80", FALSE, 0x0 },
+ { "\xed\xa9\x80", FALSE, 0x0 },
+ { "\xed\xaa\x80", FALSE, 0x0 },
+ { "\xed\xab\x80", FALSE, 0x0 },
+ { "\xed\xac\x80", FALSE, 0x0 },
+ { "\xed\xad\x80", FALSE, 0x0 },
+ { "\xed\xaf\x80", FALSE, 0x0 },
+ { "\xed\xb0\x80", FALSE, 0x0 },
+ { "\xed\xb1\x80", FALSE, 0x0 },
+ { "\xed\xb2\x80", FALSE, 0x0 },
+ { "\xed\xb3\x80", FALSE, 0x0 },
+ { "\xed\xb4\x80", FALSE, 0x0 },
+ { "\xed\xb5\x80", FALSE, 0x0 },
+ { "\xed\xb6\x80", FALSE, 0x0 },
+ { "\xed\xb7\x80", FALSE, 0x0 },
+ { "\xed\xb8\x80", FALSE, 0x0 },
+ { "\xed\xb9\x80", FALSE, 0x0 },
+ { "\xed\xba\x80", FALSE, 0x0 },
+ { "\xed\xbb\x80", FALSE, 0x0 },
+ { "\xed\xbc\x80", FALSE, 0x0 },
+ { "\xed\xbd\x80", FALSE, 0x0 },
+ { "\xed\xbf\x80", FALSE, 0x0 }, /* .. U+DFFF */
+ { "\xe2\x82\xa1", TRUE, 0x20A1 }, /* U+20A1 */
+ { "\xe2\x28\xa1", FALSE, 0x0 }, /* invalid 2nd octet */
+ { "\xe2\x82\x28", FALSE, 0x0 }, /* invalid 3rd octet */
+ { "\xf0\x90\x8c\xbc", TRUE, 0x1033C }, /* U+1033C */
+ { "\xf0\x28\x8c\xbc", FALSE, 0x0 }, /*invalid 2nd octet*/
+ { "\xf0\x90\x28\xbc", FALSE, 0x0 }, /* invalid 3rd octet */
+ { "\xf0\x28\x8c\x28", FALSE, 0x0 }, /* invalid 4th octet */
+ { "\xf4\x80\x80\x80", TRUE, 0x100000 }, /* U+100000, supplementary plane start */
+ { "\xf4\x8f\xbf\xbf", TRUE, 0x10FFFF }, /* U+10FFFF, maximum value */
+ { "\xf8\xa1\xa1\xa1\xa1", FALSE, 0x0 }, /* invalid unicode */
+ { "\xfc\xa1\xa1\xa1\xa1\xa1", FALSE, 0x0 }, /* invalid unicode */
+ };
+
+ test_begin("unichar valid unicode");
+
+ for(size_t i = 0; i < N_ELEMENTS(test_cases); i++) {
+ unichar_t chr;
+ if (test_cases[i].valid) {
+ test_assert_idx(uni_utf8_get_char(test_cases[i].input, &chr) > 0, i);
+ test_assert_idx(test_cases[i].expected == chr, i);
+ } else {
+ test_assert_idx(uni_utf8_get_char(test_cases[i].input, &chr) < 1, i);
+ }
+ }
+
+ test_end();
+}
+
+static void test_unichar_surrogates(void)
+{
+ unichar_t orig, high, low;
+ test_begin("unichar surrogates");
+
+ orig = 0x10437;
+ uni_split_surrogate(orig, &high, &low);
+ test_assert(high == 0xD801);
+ test_assert(low == 0xDC37);
+ test_assert(uni_join_surrogate(high, low) == orig);
+
+ test_end();
+}
+
+void test_unichar(void)
+{
+ static const char overlong_utf8[] = "\xf8\x80\x95\x81\xa1";
+ static const char collate_in[] = "\xc3\xbc \xc2\xb3";
+ static const char collate_exp[] = "U\xcc\x88 3";
+ buffer_t *collate_out;
+ unichar_t chr, chr2;
+ string_t *str = t_str_new(16);
+
+ test_begin("unichars encode/decode");
+ for (chr = 0; chr <= 0x10ffff; chr++) {
+ /* skip surrogates */
+ if ((chr & 0xfff800) == 0xd800)
+ continue;
+ /* The bottom 6 bits should be irrelevant to code coverage,
+ only test 000000, 111111, and something in between. */
+ if ((chr & 63) == 1)
+ chr += i_rand_limit(62); /* After 0, somewhere between 1 and 62 */
+ else if ((chr & 63) > 0 && (chr & 63) < 63)
+ chr |= 63; /* After random, straight to 63 */
+
+ str_truncate(str, 0);
+ uni_ucs4_to_utf8_c(chr, str);
+ test_assert(uni_utf8_str_is_valid(str_c(str)));
+ test_assert(uni_utf8_get_char(str_c(str), &chr2) == (int)uni_utf8_char_bytes(*str_data(str)));
+ test_assert(chr2 == chr);
+
+ if ((chr & 0x63) == 0) {
+ unsigned int utf8len = uni_utf8_char_bytes((unsigned char)*str_c(str));
+
+ /* virtually truncate the byte string */
+ while (--utf8len > 0)
+ test_assert(uni_utf8_get_char_n(str_c(str), utf8len, &chr2) == 0);
+
+ utf8len = uni_utf8_char_bytes((unsigned char)*str_c(str));
+
+ /* actually truncate the byte stream */
+ while (--utf8len > 0) {
+ str_truncate(str, utf8len);
+ test_assert(!uni_utf8_str_is_valid(str_c(str)));
+ test_assert(uni_utf8_get_char(str_c(str), &chr2) == 0);
+ }
+ }
+ }
+ test_end();
+
+ test_begin("unichar collation");
+ collate_out = buffer_create_dynamic(default_pool, 32);
+ uni_utf8_to_decomposed_titlecase(collate_in, sizeof(collate_in),
+ collate_out);
+ test_assert(strcmp(collate_out->data, collate_exp) == 0);
+ buffer_free(&collate_out);
+
+ test_assert(!uni_utf8_str_is_valid(overlong_utf8));
+ test_assert(uni_utf8_get_char(overlong_utf8, &chr2) < 0);
+ test_end();
+
+ test_unichar_uni_utf8_strlen();
+ test_unichar_uni_utf8_partial_strlen_n();
+ test_unichar_valid_unicode();
+ test_unichar_surrogates();
+}