@matheusbsbs / matheus-bagliano
Code Commits Pulls CI/CD 81,348
maint
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1 #include "unit-test.h"
2 #include "utf8.h"
3 #include "strbuf.h"
4
5 /*
6 * Test utf8_strnwidth with various Chinese strings
7 * Chinese characters typically have a width of 2 columns when displayed
8 */
9 void test_utf8_width__strnwidth_chinese(void)
10 {
11 const char *str;
12
13 /* Test basic ASCII - each character should have width 1 */
14 cl_assert_equal_i(5, utf8_strnwidth("Hello", 5, 0));
15 /* skip_ansi = 1 */
16 cl_assert_equal_i(5, utf8_strnwidth("Hello", 5, 1));
17
18 /* Test simple Chinese characters - each should have width 2 */
19 /* "你好" is 6 bytes (3 bytes per char in UTF-8), 4 display columns */
20 cl_assert_equal_i(4, utf8_strnwidth("你好", 6, 0));
21
22 /* Test mixed ASCII and Chinese - ASCII = 1 column, Chinese = 2 columns */
23 /* "h"(1) + "i"(1) + "你"(2) + "好"(2) = 6 */
24 cl_assert_equal_i(6, utf8_strnwidth("Hi你好", 8, 0));
25
26 /* Test longer Chinese string */
27 /* 5 Chinese chars = 10 display columns */
28 cl_assert_equal_i(10, utf8_strnwidth("你好世界！", 15, 0));
29
30 /* Test individual Chinese character width */
31 cl_assert_equal_i(2, utf8_strnwidth("中", 3, 0));
32
33 /* Test empty string */
34 cl_assert_equal_i(0, utf8_strnwidth("", 0, 0));
35
36 /* Test length limiting */
37 str = "你好世界";
38 /* Only first char "你"(2 columns) within 3 bytes */
39 cl_assert_equal_i(2, utf8_strnwidth(str, 3, 0));
40 /* First two chars "你好"(4 columns) in 6 bytes */
41 cl_assert_equal_i(4, utf8_strnwidth(str, 6, 0));
42 }
43
44 /*
45 * Tests for utf8_strwidth (simpler version without length limit)
46 */
47 void test_utf8_width__strwidth_chinese(void)
48 {
49 /* Test basic ASCII */
50 cl_assert_equal_i(5, utf8_strwidth("Hello"));
51
52 /* Test Chinese characters */
53 /* 2 Chinese chars = 4 display columns */
54 cl_assert_equal_i(4, utf8_strwidth("你好"));
55
56 /* Test longer Chinese string */
57 /* 5 Chinese chars = 10 display columns */
58 cl_assert_equal_i(10, utf8_strwidth("你好世界！"));
59
60 /* Test mixed ASCII and Chinese */
61 /* 5 ASCII (5 cols) + 2 Chinese (4 cols) = 9 */
62 cl_assert_equal_i(9, utf8_strwidth("Hello世界"));
63 /* 2 ASCII (2 cols) + 2 Chinese (4 cols) + 1 ASCII (1 col) = 7 */
64 cl_assert_equal_i(7, utf8_strwidth("Hi世界!"));
65 }
66
67 /*
68 * Additional tests with other East Asian characters
69 */
70 void test_utf8_width__strnwidth_japanese_korean(void)
71 {
72 /* Japanese characters (should also be 2 columns each) */
73 /* 5 Japanese chars x 2 cols each = 10 display columns */
74 cl_assert_equal_i(10, utf8_strnwidth("こんにちは", 15, 0));
75
76 /* Korean characters (should also be 2 columns each) */
77 /* 5 Korean chars x 2 cols each = 10 display columns */
78 cl_assert_equal_i(10, utf8_strnwidth("안녕하세요", 15, 0));
79 }
80
81 /*
82 * Test utf8_strnwidth with CJK strings and ANSI sequences
83 */
84 void test_utf8_width__strnwidth_cjk_with_ansi(void)
85 {
86 /* Test CJK with ANSI sequences */
87 const char *ansi_test = "\033[1m你好\033[0m";
88 int width = utf8_strnwidth(ansi_test, strlen(ansi_test), 1);
89 /* Should skip ANSI sequences and count "你好" as 4 columns */
90 cl_assert_equal_i(4, width);
91
92 /* Test mixed ASCII, CJK, and ANSI */
93 ansi_test = "Hello\033[32m世界\033[0m!";
94 width = utf8_strnwidth(ansi_test, strlen(ansi_test), 1);
95 /* "Hello"(5) + "世界"(4) + "!"(1) = 10 */
96 cl_assert_equal_i(10, width);
97 }
98
99 /*
100 * Test the strbuf_utf8_align function with CJK characters
101 */
102 void test_utf8_width__strbuf_utf8_align(void)
103 {
104 struct strbuf buf = STRBUF_INIT;
105
106 /* Test left alignment with CJK */
107 strbuf_utf8_align(&buf, ALIGN_LEFT, 10, "你好");
108 /* Since "你好" is 4 display columns, we need 6 more spaces to reach 10 */
109 cl_assert_equal_s("你好 ", buf.buf);
110 strbuf_reset(&buf);
111
112 /* Test right alignment with CJK */
113 strbuf_utf8_align(&buf, ALIGN_RIGHT, 8, "世界");
114 /* "世界" is 4 display columns, so we need 4 leading spaces */
115 cl_assert_equal_s(" 世界", buf.buf);
116 strbuf_reset(&buf);
117
118 /* Test center alignment with CJK */
119 strbuf_utf8_align(&buf, ALIGN_MIDDLE, 10, "中");
120 /* "中" is 2 display columns, so (10-2)/2 = 4 spaces on left, 4 on right */
121 cl_assert_equal_s(" 中 ", buf.buf);
122 strbuf_reset(&buf);
123
124 strbuf_utf8_align(&buf, ALIGN_MIDDLE, 5, "中");
125 /* "中" is 2 display columns, so (5-2)/2 = 1 spaces on left, 2 on right */
126 cl_assert_equal_s(" 中 ", buf.buf);
127 strbuf_reset(&buf);
128
129 /* Test alignment that is smaller than string width */
130 strbuf_utf8_align(&buf, ALIGN_LEFT, 2, "你好");
131 /* Since "你好" is 4 display columns, it should not be truncated */
132 cl_assert_equal_s("你好", buf.buf);
133 strbuf_release(&buf);
134 }