xref: /freebsd/lib/libc/tests/locale/mbtowc_test.c (revision 22d7dd834bc5cd189810e414701e3ad1e98102e4)
1 /*-
2  * Copyright (c) 2002-2004 Tim J. Robbins
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 /*
28  * Test program for mbtowc(), as specified by IEEE Std. 1003.1-2001 and
29  * ISO/IEC 9899:1990.
30  *
31  * The function is tested with both the "C" ("POSIX") LC_CTYPE setting and
32  * "ja_JP.eucJP". Other encodings are not tested.
33  */
34 
35 #include <sys/cdefs.h>
36 #include <limits.h>
37 #include <locale.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 
42 #include <atf-c.h>
43 
44 ATF_TC_WITHOUT_HEAD(mbtowc_test);
45 ATF_TC_BODY(mbtowc_test, tc)
46 {
47 	char buf[MB_LEN_MAX + 1];
48 	wchar_t wc;
49 
50 	/* C/POSIX locale. */
51 
52 	ATF_REQUIRE(MB_CUR_MAX == 1);
53 
54 	/* No shift states in C locale. */
55 	ATF_REQUIRE(mbtowc(NULL, NULL, 0) == 0);
56 
57 	/* Null wide character. */
58 	wc = 0xcccc;
59 	memset(buf, 0, sizeof(buf));
60 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == 0);
61 	ATF_REQUIRE(wc == 0);
62 
63 	/* Latin letter A. */
64 	buf[0] = 'A';
65 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == 1);
66 	ATF_REQUIRE(wc == L'A');
67 
68 	/* Incomplete character sequence. */
69 	wc = L'z';
70 	buf[0] = '\0';
71 	ATF_REQUIRE(mbtowc(&wc, buf, 0) == -1);
72 	ATF_REQUIRE(wc == L'z');
73 	ATF_REQUIRE(mbtowc(NULL, NULL, 0) == 0);
74 
75 	/* Japanese (EUC) locale. */
76 
77 	ATF_REQUIRE(strcmp(setlocale(LC_CTYPE, "ja_JP.eucJP"), "ja_JP.eucJP") == 0);
78 	ATF_REQUIRE(MB_CUR_MAX > 1);
79 
80 	/* Null wide character */
81 	memset(buf, 0xcc, sizeof(buf));
82 	buf[0] = 0;
83 	wc = 0xcccc;
84 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == 0);
85 	ATF_REQUIRE(wc == 0);
86 
87 	/* Latin letter A. */
88 	buf[0] = 'A';
89 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == 1);
90 	ATF_REQUIRE(wc == L'A');
91 
92 	/* Incomplete character sequence (zero length). */
93 	wc = L'z';
94 	buf[0] = '\0';
95 	ATF_REQUIRE(mbtowc(&wc, buf, 0) == -1);
96 	ATF_REQUIRE(wc == L'z');
97 	ATF_REQUIRE(mbtowc(NULL, NULL, 0) == 0);
98 
99 	/* Incomplete character sequence (truncated double-byte). */
100 	memset(buf, 0xcc, sizeof(buf));
101 	buf[0] = 0xa3;
102 	buf[1] = 0x00;
103 	wc = L'z';
104 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == -1);
105 	ATF_REQUIRE(wc == L'z');
106 	ATF_REQUIRE(mbtowc(NULL, NULL, 0) == 0);
107 
108 	/* Same as above, but complete. */
109 	buf[1] = 0xc1;
110 	ATF_REQUIRE(mbtowc(&wc, buf, 2) == 2);
111 	ATF_REQUIRE(wc == 0xa3c1);
112 }
113 
114 ATF_TP_ADD_TCS(tp)
115 {
116 
117 	ATF_TP_ADD_TC(tp, mbtowc_test);
118 
119 	return (atf_no_error());
120 }
121