xref: /freebsd/lib/libc/tests/locale/mbtowc_test.c (revision fe75646a0234a261c0013bf1840fdac4acaf0cec)
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 <limits.h>
36 #include <locale.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 
41 #include <atf-c.h>
42 
43 ATF_TC_WITHOUT_HEAD(mbtowc_test);
44 ATF_TC_BODY(mbtowc_test, tc)
45 {
46 	char buf[MB_LEN_MAX + 1];
47 	wchar_t wc;
48 
49 	/* C/POSIX locale. */
50 
51 	ATF_REQUIRE(MB_CUR_MAX == 1);
52 
53 	/* No shift states in C locale. */
54 	ATF_REQUIRE(mbtowc(NULL, NULL, 0) == 0);
55 
56 	/* Null wide character. */
57 	wc = 0xcccc;
58 	memset(buf, 0, sizeof(buf));
59 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == 0);
60 	ATF_REQUIRE(wc == 0);
61 
62 	/* Latin letter A. */
63 	buf[0] = 'A';
64 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == 1);
65 	ATF_REQUIRE(wc == L'A');
66 
67 	/* Incomplete character sequence. */
68 	wc = L'z';
69 	buf[0] = '\0';
70 	ATF_REQUIRE(mbtowc(&wc, buf, 0) == -1);
71 	ATF_REQUIRE(wc == L'z');
72 	ATF_REQUIRE(mbtowc(NULL, NULL, 0) == 0);
73 
74 	/* Japanese (EUC) locale. */
75 
76 	ATF_REQUIRE(strcmp(setlocale(LC_CTYPE, "ja_JP.eucJP"), "ja_JP.eucJP") == 0);
77 	ATF_REQUIRE(MB_CUR_MAX > 1);
78 
79 	/* Null wide character */
80 	memset(buf, 0xcc, sizeof(buf));
81 	buf[0] = 0;
82 	wc = 0xcccc;
83 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == 0);
84 	ATF_REQUIRE(wc == 0);
85 
86 	/* Latin letter A. */
87 	buf[0] = 'A';
88 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == 1);
89 	ATF_REQUIRE(wc == L'A');
90 
91 	/* Incomplete character sequence (zero length). */
92 	wc = L'z';
93 	buf[0] = '\0';
94 	ATF_REQUIRE(mbtowc(&wc, buf, 0) == -1);
95 	ATF_REQUIRE(wc == L'z');
96 	ATF_REQUIRE(mbtowc(NULL, NULL, 0) == 0);
97 
98 	/* Incomplete character sequence (truncated double-byte). */
99 	memset(buf, 0xcc, sizeof(buf));
100 	buf[0] = 0xa3;
101 	buf[1] = 0x00;
102 	wc = L'z';
103 	ATF_REQUIRE(mbtowc(&wc, buf, 1) == -1);
104 	ATF_REQUIRE(wc == L'z');
105 	ATF_REQUIRE(mbtowc(NULL, NULL, 0) == 0);
106 
107 	/* Same as above, but complete. */
108 	buf[1] = 0xc1;
109 	ATF_REQUIRE(mbtowc(&wc, buf, 2) == 2);
110 	ATF_REQUIRE(wc == 0xa3c1);
111 }
112 
113 ATF_TP_ADD_TCS(tp)
114 {
115 
116 	ATF_TP_ADD_TC(tp, mbtowc_test);
117 
118 	return (atf_no_error());
119 }
120