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stdio.c
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1/** Test program for printf() in lib/stdio.c.
2
3 Attempts to test printf() functionality that is not
4 sufficiently tested elsewhere in Pintos.
5
6 This is not a test we will run on your submitted projects.
7 It is here for completeness.
8*/
9
10#undef NDEBUG
11#include <limits.h>
12#include <stdarg.h>
13#include <stddef.h>
14#include <stdlib.h>
15#include <stdio.h>
16#include <string.h>
17#include "threads/test.h"
18
19/** Number of failures so far. */
20static int failure_cnt;
21
22static void
23checkf (const char *expect, const char *format, ...)
24{
25 char output[128];
26 va_list args;
27
28 printf ("\"%s\" -> \"%s\": ", format, expect);
29
30 va_start (args, format);
31 vsnprintf (output, sizeof output, format, args);
32 va_end (args);
33
34 if (strcmp (expect, output))
35 {
36 printf ("\nFAIL: actual output \"%s\"\n", output);
37 failure_cnt++;
38 }
39 else
40 printf ("okay\n");
41}
42
43/** Test printf() implementation. */
44void
45test (void)
46{
47 printf ("Testing formats:");
48
49 /* Check that commas show up in the right places, for positive
50 numbers. */
51 checkf ("1", "%'d", 1);
52 checkf ("12", "%'d", 12);
53 checkf ("123", "%'d", 123);
54 checkf ("1,234", "%'d", 1234);
55 checkf ("12,345", "%'d", 12345);
56 checkf ("123,456", "%'ld", 123456L);
57 checkf ("1,234,567", "%'ld", 1234567L);
58 checkf ("12,345,678", "%'ld", 12345678L);
59 checkf ("123,456,789", "%'ld", 123456789L);
60 checkf ("1,234,567,890", "%'ld", 1234567890L);
61 checkf ("12,345,678,901", "%'lld", 12345678901LL);
62 checkf ("123,456,789,012", "%'lld", 123456789012LL);
63 checkf ("1,234,567,890,123", "%'lld", 1234567890123LL);
64 checkf ("12,345,678,901,234", "%'lld", 12345678901234LL);
65 checkf ("123,456,789,012,345", "%'lld", 123456789012345LL);
66 checkf ("1,234,567,890,123,456", "%'lld", 1234567890123456LL);
67 checkf ("12,345,678,901,234,567", "%'lld", 12345678901234567LL);
68 checkf ("123,456,789,012,345,678", "%'lld", 123456789012345678LL);
69 checkf ("1,234,567,890,123,456,789", "%'lld", 1234567890123456789LL);
70
71 /* Check that commas show up in the right places, for positive
72 numbers. */
73 checkf ("-1", "%'d", -1);
74 checkf ("-12", "%'d", -12);
75 checkf ("-123", "%'d", -123);
76 checkf ("-1,234", "%'d", -1234);
77 checkf ("-12,345", "%'d", -12345);
78 checkf ("-123,456", "%'ld", -123456L);
79 checkf ("-1,234,567", "%'ld", -1234567L);
80 checkf ("-12,345,678", "%'ld", -12345678L);
81 checkf ("-123,456,789", "%'ld", -123456789L);
82 checkf ("-1,234,567,890", "%'ld", -1234567890L);
83 checkf ("-12,345,678,901", "%'lld", -12345678901LL);
84 checkf ("-123,456,789,012", "%'lld", -123456789012LL);
85 checkf ("-1,234,567,890,123", "%'lld", -1234567890123LL);
86 checkf ("-12,345,678,901,234", "%'lld", -12345678901234LL);
87 checkf ("-123,456,789,012,345", "%'lld", -123456789012345LL);
88 checkf ("-1,234,567,890,123,456", "%'lld", -1234567890123456LL);
89 checkf ("-12,345,678,901,234,567", "%'lld", -12345678901234567LL);
90 checkf ("-123,456,789,012,345,678", "%'lld", -123456789012345678LL);
91 checkf ("-1,234,567,890,123,456,789", "%'lld", -1234567890123456789LL);
92
93 /* Check signed integer conversions. */
94 checkf (" 0", "%5d", 0);
95 checkf ("0 ", "%-5d", 0);
96 checkf (" +0", "%+5d", 0);
97 checkf ("+0 ", "%+-5d", 0);
98 checkf (" 0", "% 5d", 0);
99 checkf ("00000", "%05d", 0);
100 checkf (" ", "%5.0d", 0);
101 checkf (" 00", "%5.2d", 0);
102 checkf ("0", "%d", 0);
103
104 checkf (" 1", "%5d", 1);
105 checkf ("1 ", "%-5d", 1);
106 checkf (" +1", "%+5d", 1);
107 checkf ("+1 ", "%+-5d", 1);
108 checkf (" 1", "% 5d", 1);
109 checkf ("00001", "%05d", 1);
110 checkf (" 1", "%5.0d", 1);
111 checkf (" 01", "%5.2d", 1);
112 checkf ("1", "%d", 1);
113
114 checkf (" -1", "%5d", -1);
115 checkf ("-1 ", "%-5d", -1);
116 checkf (" -1", "%+5d", -1);
117 checkf ("-1 ", "%+-5d", -1);
118 checkf (" -1", "% 5d", -1);
119 checkf ("-0001", "%05d", -1);
120 checkf (" -1", "%5.0d", -1);
121 checkf (" -01", "%5.2d", -1);
122 checkf ("-1", "%d", -1);
123
124 checkf ("12345", "%5d", 12345);
125 checkf ("12345", "%-5d", 12345);
126 checkf ("+12345", "%+5d", 12345);
127 checkf ("+12345", "%+-5d", 12345);
128 checkf (" 12345", "% 5d", 12345);
129 checkf ("12345", "%05d", 12345);
130 checkf ("12345", "%5.0d", 12345);
131 checkf ("12345", "%5.2d", 12345);
132 checkf ("12345", "%d", 12345);
133
134 checkf ("123456", "%5d", 123456);
135 checkf ("123456", "%-5d", 123456);
136 checkf ("+123456", "%+5d", 123456);
137 checkf ("+123456", "%+-5d", 123456);
138 checkf (" 123456", "% 5d", 123456);
139 checkf ("123456", "%05d", 123456);
140 checkf ("123456", "%5.0d", 123456);
141 checkf ("123456", "%5.2d", 123456);
142 checkf ("123456", "%d", 123456);
143
144 /* Check unsigned integer conversions. */
145 checkf (" 0", "%5u", 0);
146 checkf (" 0", "%5o", 0);
147 checkf (" 0", "%5x", 0);
148 checkf (" 0", "%5X", 0);
149 checkf (" 0", "%#5o", 0);
150 checkf (" 0", "%#5x", 0);
151 checkf (" 0", "%#5X", 0);
152 checkf (" 00000000", "%#10.8x", 0);
153
154 checkf (" 1", "%5u", 1);
155 checkf (" 1", "%5o", 1);
156 checkf (" 1", "%5x", 1);
157 checkf (" 1", "%5X", 1);
158 checkf (" 01", "%#5o", 1);
159 checkf (" 0x1", "%#5x", 1);
160 checkf (" 0X1", "%#5X", 1);
161 checkf ("0x00000001", "%#10.8x", 1);
162
163 checkf ("123456", "%5u", 123456);
164 checkf ("361100", "%5o", 123456);
165 checkf ("1e240", "%5x", 123456);
166 checkf ("1E240", "%5X", 123456);
167 checkf ("0361100", "%#5o", 123456);
168 checkf ("0x1e240", "%#5x", 123456);
169 checkf ("0X1E240", "%#5X", 123456);
170 checkf ("0x0001e240", "%#10.8x", 123456);
171
172 /* Character and string conversions. */
173 checkf ("foobar", "%c%c%c%c%c%c", 'f', 'o', 'o', 'b', 'a', 'r');
174 checkf (" left-right ", "%6s%s%-7s", "left", "-", "right");
175 checkf ("trim", "%.4s", "trimoff");
176 checkf ("%%", "%%%%");
177
178 /* From Cristian Cadar's automatic test case generator. */
179 checkf (" abcdefgh", "%9s", "abcdefgh");
180 checkf ("36657730000", "%- o", (unsigned) 036657730000);
181 checkf ("4139757568", "%- u", (unsigned) 4139757568UL);
182 checkf ("f6bfb000", "%- x", (unsigned) 0xf6bfb000);
183 checkf ("36657730000", "%-to", (ptrdiff_t) 036657730000);
184 checkf ("4139757568", "%-tu", (ptrdiff_t) 4139757568UL);
185 checkf ("-155209728", "%-zi", (size_t) -155209728);
186 checkf ("-155209728", "%-zd", (size_t) -155209728);
187 checkf ("036657730000", "%+#o", (unsigned) 036657730000);
188 checkf ("0xf6bfb000", "%+#x", (unsigned) 0xf6bfb000);
189 checkf ("-155209728", "% zi", (size_t) -155209728);
190 checkf ("-155209728", "% zd", (size_t) -155209728);
191 checkf ("4139757568", "% tu", (ptrdiff_t) 4139757568UL);
192 checkf ("036657730000", "% #o", (unsigned) 036657730000);
193 checkf ("0xf6bfb000", "% #x", (unsigned) 0xf6bfb000);
194 checkf ("0xf6bfb000", "%# x", (unsigned) 0xf6bfb000);
195 checkf ("-155209728", "%#zd", (size_t) -155209728);
196 checkf ("-155209728", "%0zi", (size_t) -155209728);
197 checkf ("4,139,757,568", "%'tu", (ptrdiff_t) 4139757568UL);
198 checkf ("-155,209,728", "%-'d", -155209728);
199 checkf ("-155209728", "%.zi", (size_t) -155209728);
200 checkf ("-155209728", "%zi", (size_t) -155209728);
201 checkf ("-155209728", "%zd", (size_t) -155209728);
202 checkf ("-155209728", "%+zi", (size_t) -155209728);
203
204 if (failure_cnt == 0)
205 printf ("\nstdio: PASS\n");
206 else
207 printf ("\nstdio: FAIL: %d tests failed\n", failure_cnt);
208}
vsnprintf
int vsnprintf(char *buffer, size_t buf_size, const char *format, va_list args)
Like vprintf(), except that output is stored into BUFFER, which must have space for BUF_SIZE characte...
Definition: stdio.c:26
printf
int printf(const char *format,...)
Writes formatted output to the console.
Definition: stdio.c:79
va_end
#define va_end(LIST)
Definition: stdarg.h:10
va_start
#define va_start(LIST, ARG)
Definition: stdarg.h:9
va_list
__builtin_va_list va_list
GCC has <stdarg.h> functionality as built-ins, so all we need is to use it.
Definition: stdarg.h:7
ptrdiff_t
__PTRDIFF_TYPE__ ptrdiff_t
GCC predefines the types we need for ptrdiff_t and size_t, so that we don't have to guess.
Definition: stddef.h:9
strcmp
int strcmp(const char *a_, const char *b_)
Finds the first differing characters in strings A and B.
Definition: string.c:73
test
void test(void)
Test printf() implementation.
Definition: stdio.c:45
failure_cnt
static int failure_cnt
Test program for printf() in lib/stdio.c.
Definition: stdio.c:20
checkf
static void checkf(const char *expect, const char *format,...)
Definition: stdio.c:23
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