1/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
2 * Use of this source code is governed by a BSD-style license that can be
3 * found in the LICENSE file.
4 *
5 * Tests for string utility functions.
6 */
7
8#include <stdint.h>
9#include <stdio.h>
10#include <stdlib.h>
11#include <string.h>
12
13#include "test_common.h"
14#include "utility.h"
15#include "vboot_common.h"
16
17
18/* Test string concatenation */
19static void StrncatTest(void) {
20  char dest[128];
21
22  /* Null inputs */
23  TEST_EQ(0, StrnAppend(dest, NULL, sizeof(dest)), "StrnAppend('', null)");
24  TEST_EQ(0, StrnAppend(NULL, "Hey!", sizeof(dest)), "StrnAppend(null, '')");
25
26  /* Empty <-- empty */
27  *dest = 0;
28  TEST_EQ(0, StrnAppend(dest, "", sizeof(dest)), "StrnAppend('', '')");
29  TEST_EQ(0, strcmp(dest, ""), "StrnAppend('', '') result");
30
31  /* Nonempty <-- empty */
32  strcpy(dest, "Bob");
33  TEST_EQ(3, StrnAppend(dest, "", sizeof(dest)), "StrnAppend(B, '')");
34  TEST_EQ(0, strcmp(dest, "Bob"), "StrnAppend(B, '') result");
35
36  /* Empty <-- nonempty */
37  *dest = 0;
38  TEST_EQ(5, StrnAppend(dest, "Alice", sizeof(dest)), "StrnAppend('', A)");
39  TEST_EQ(0, strcmp(dest, "Alice"), "StrnAppend('', A) result");
40
41  /* Nonempty <-- nonempty */
42  strcpy(dest, "Tigre");
43  TEST_EQ(10, StrnAppend(dest, "Bunny", sizeof(dest)), "StrnAppend(T, B)");
44  TEST_EQ(0, strcmp(dest, "TigreBunny"), "StrnAppend(T, B) result");
45
46  /* Test clipping */
47  strcpy(dest, "YesI");
48  TEST_EQ(7, StrnAppend(dest, "Can't", 8), "StrnAppend(Y, over)");
49  TEST_EQ(0, strcmp(dest, "YesICan"), "StrnAppend(Y, over) result");
50
51  /* Test clipping if dest already overflows its claimed length */
52  strcpy(dest, "BudgetDeficit");
53  TEST_EQ(6, StrnAppend(dest, "Spending", 7), "StrnAppend(over, over)");
54  TEST_EQ(0, strcmp(dest, "Budget"), "StrnAppend(over, over) result");
55}
56
57
58static void TestU64ToS(uint64_t value, uint32_t radix, uint32_t zero_pad_width,
59                       const char *expect) {
60  char dest[UINT64_TO_STRING_MAX];
61
62  TEST_EQ(strlen(expect),
63          Uint64ToString(dest, sizeof(dest), value, radix, zero_pad_width),
64          "Uint64ToString");
65  printf("Uint64ToString expect %s got %s\n", expect, dest);
66  TEST_EQ(0, strcmp(dest, expect), "Uint64ToString result");
67}
68
69
70/* Test uint64 to string conversion */
71static void Uint64ToStringTest(void) {
72  char dest[UINT64_TO_STRING_MAX];
73
74  /* Test invalid inputs */
75  TEST_EQ(0, Uint64ToString(NULL, 8, 123, 10, 8), "Uint64ToString null dest");
76  TestU64ToS(0, 1, 0, "");
77  TestU64ToS(0, 37, 0, "");
78
79  /* Binary */
80  TestU64ToS(0, 2, 0, "0");
81  TestU64ToS(0x9A, 2, 0, "10011010");
82  TestU64ToS(0x71, 2, 12, "000001110001");
83  TestU64ToS(
84      ~0ULL, 2, 0,
85      "1111111111111111111111111111111111111111111111111111111111111111");
86
87  /* Decimal */
88  TestU64ToS(0, 10, 0, "0");
89  TestU64ToS(12345, 10, 0, "12345");
90  TestU64ToS(67890, 10, 8, "00067890");
91  TestU64ToS(~0ULL, 10, 0, "18446744073709551615");
92
93  /* Hex */
94  TestU64ToS(0, 16, 0, "0");
95  TestU64ToS(0x12345678, 16, 0, "12345678");
96  TestU64ToS(0x9ABCDEF, 16, 8, "09abcdef");
97  TestU64ToS(~0ULL, 16, 0, "ffffffffffffffff");
98
99  /* Zero pad corner cases */
100  /* Don't pad if over length */
101  TestU64ToS(0x1234567890ULL, 16, 8, "1234567890");
102  /* Fail if padding won't fit in buffer */
103  TEST_EQ(0, Uint64ToString(dest, 8, 123, 10, 8), "Uint64ToString bad pad");
104  TEST_EQ(0, strcmp(dest, ""), "Uint64ToString bad pad result");
105
106}
107
108
109int main(int argc, char* argv[]) {
110  int error_code = 0;
111
112  StrncatTest();
113  Uint64ToStringTest();
114
115  if (!gTestSuccess)
116    error_code = 255;
117
118  return error_code;
119}
120