1 #include "config.h" 2 3 #include "ntp_stdlib.h" 4 5 #include "unity.h" 6 7 #ifndef VSNPRINTF_PERCENT_M 8 // format_errmsg() is normally private to msyslog.c 9 void format_errmsg(char *, size_t, const char *, int); 10 #endif 11 12 13 void setUp(void); 14 void test_msnprintf(void); 15 void test_msnprintfLiteralPercentm(void); 16 void test_msnprintfBackslashLiteralPercentm(void); 17 void test_msnprintfBackslashPercent(void); 18 void test_msnprintfHangingPercent(void); 19 void test_format_errmsgHangingPercent(void); 20 void test_msnprintfNullTarget(void); 21 void test_msnprintfTruncate(void); 22 23 24 void 25 setUp(void) 26 { 27 init_lib(); 28 29 return; 30 } 31 32 33 void 34 test_msnprintf(void) { 35 #define FMT_PREFIX "msyslog.cpp ENOENT: " 36 char exp_buf[512]; 37 char act_buf[512]; 38 int exp_cnt; 39 int act_cnt; 40 41 exp_cnt = snprintf(exp_buf, sizeof(exp_buf), FMT_PREFIX "%s", 42 strerror(ENOENT)); 43 errno = ENOENT; 44 act_cnt = msnprintf(act_buf, sizeof(act_buf), FMT_PREFIX "%m"); 45 46 TEST_ASSERT_EQUAL(exp_cnt, act_cnt); 47 TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf); 48 } 49 50 void 51 test_msnprintfLiteralPercentm(void) 52 { 53 char exp_buf[32]; 54 char act_buf[32]; 55 int exp_cnt; 56 int act_cnt; 57 58 exp_cnt = snprintf(exp_buf, sizeof(exp_buf), "%%m"); 59 errno = ENOENT; 60 act_cnt = msnprintf(act_buf, sizeof(act_buf), "%%m"); 61 62 TEST_ASSERT_EQUAL(exp_cnt, act_cnt); 63 TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf); 64 } 65 66 void 67 test_msnprintfBackslashLiteralPercentm(void) { 68 char exp_buf[32]; 69 char act_buf[32]; 70 int exp_cnt; 71 int act_cnt; 72 73 exp_cnt = snprintf(exp_buf, sizeof(exp_buf), "\%%m"); 74 errno = ENOENT; 75 act_cnt = msnprintf(act_buf, sizeof(act_buf), "\%%m"); 76 77 TEST_ASSERT_EQUAL(exp_cnt, act_cnt); 78 TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf); 79 } 80 81 void 82 test_msnprintfBackslashPercent(void) { 83 char exp_buf[32]; 84 char act_buf[32]; 85 int exp_cnt; 86 int act_cnt; 87 88 exp_cnt = snprintf(exp_buf, sizeof(exp_buf), "\%s", 89 strerror(ENOENT)); 90 errno = ENOENT; 91 act_cnt = msnprintf(act_buf, sizeof(act_buf), "\%m"); 92 93 TEST_ASSERT_EQUAL(exp_cnt, act_cnt); 94 TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf); 95 } 96 97 void 98 test_msnprintfHangingPercent(void) { 99 static char fmt[] = "percent then nul term then non-nul %\0oops!"; 100 char exp_buf[64]; 101 char act_buf[64]; 102 int exp_cnt; 103 int act_cnt; 104 105 ZERO(exp_buf); 106 ZERO(act_buf); 107 exp_cnt = snprintf(exp_buf, sizeof(exp_buf), "%s", fmt); 108 act_cnt = msnprintf(act_buf, sizeof(act_buf), "%s", fmt); 109 110 TEST_ASSERT_EQUAL(exp_cnt, act_cnt); 111 TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf); 112 TEST_ASSERT_EQUAL_STRING("", act_buf + 1 + strlen(act_buf)); 113 } 114 115 void 116 test_format_errmsgHangingPercent(void) { 117 #ifndef VSNPRINTF_PERCENT_M 118 static char fmt[] = "percent then nul term then non-nul %\0oops!"; 119 char act_buf[64]; 120 121 ZERO(act_buf); 122 format_errmsg(act_buf, sizeof(act_buf), fmt, ENOENT); 123 124 TEST_ASSERT_EQUAL_STRING(fmt, act_buf); 125 TEST_ASSERT_EQUAL_STRING("", act_buf + 1 + strlen(act_buf)); 126 #else 127 TEST_IGNORE_MESSAGE("VSNPRINTF_PERCENT_M is defined") 128 #endif 129 } 130 131 void 132 test_msnprintfNullTarget(void) { 133 int exp_cnt; 134 int act_cnt; 135 136 exp_cnt = snprintf(NULL, 0, "%d", 123); 137 errno = ENOENT; 138 act_cnt = msnprintf(NULL, 0, "%d", 123); 139 140 TEST_ASSERT_EQUAL(exp_cnt, act_cnt); 141 } 142 143 void 144 test_msnprintfTruncate(void) { 145 char undist[] = "undisturbed"; 146 char exp_buf[512]; 147 char act_buf[512]; 148 int exp_cnt; 149 int act_cnt; 150 151 memcpy(exp_buf + 3, undist, sizeof(undist)); 152 memcpy(act_buf + 3, undist, sizeof(undist)); 153 exp_cnt = snprintf(exp_buf, 3, "%s", strerror(ENOENT)); 154 errno = ENOENT; 155 act_cnt = msnprintf(act_buf, 3, "%m"); 156 157 TEST_ASSERT_EQUAL('\0', exp_buf[2]); 158 TEST_ASSERT_EQUAL('\0', act_buf[2]); 159 TEST_ASSERT_TRUE(act_cnt > 0); 160 TEST_ASSERT_EQUAL(exp_cnt, act_cnt); 161 TEST_ASSERT_EQUAL_STRING(exp_buf, act_buf); 162 TEST_ASSERT_EQUAL_STRING(exp_buf + 3, undist); 163 TEST_ASSERT_EQUAL_STRING(act_buf + 3, undist); 164 } 165