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 utility functions
6 */
7
8#include <stdint.h>
9#include <stdio.h>
10#include <stdlib.h>
11#include <string.h>
12
13#define _STUB_IMPLEMENTATION_  /* So we can use memset() ourselves */
14
15#include "test_common.h"
16#include "utility.h"
17#include "vboot_common.h"
18
19
20/* Test utility.h and sysincludes.h macros */
21static void MacrosTest(void) {
22  int64_t a = -10, b = -20;
23  uint64_t u = (0xABCD00000000ULL);
24  uint64_t v = (0xABCD000000ULL);
25
26  TEST_EQ(CombineUint16Pair(1, 2), 0x00010002, "CombineUint16Pair");
27  TEST_EQ(CombineUint16Pair(0xFFFE, 0xFFFF), 0xFFFEFFFF,
28          "CombineUint16Pair 2");
29  TEST_EQ(CombineUint16Pair(-4, -16), 0xFFFCFFF0,
30          "CombineUint16Pair big negative");
31  TEST_EQ(CombineUint16Pair(0x10003, 0x10004), 0x00030004,
32          "CombineUint16Pair overflow");
33
34  TEST_EQ(Min(1, 2), 1, "Min 1");
35  TEST_EQ(Min(4, 3), 3, "Min 2");
36  TEST_EQ(Min(5, 5), 5, "Min 5");
37  TEST_EQ(Min(a, b), b, "Min uint64 1");
38  TEST_EQ(Min(b, a), b, "Min uint64 2");
39  TEST_EQ(Min(b, b), b, "Min uint64 same");
40
41  TEST_EQ(u >> 8, v, "uint64_t >> 8");
42  TEST_EQ(u >> 0, u, "uint64_t >> 0");
43  TEST_EQ(u >> 36, (uint64_t)0xABC, "uint64_t >> 36");
44
45  TEST_EQ(v * (uint32_t)0, 0, "uint64_t * uint32_t 0");
46  TEST_EQ(v * (uint32_t)1, v, "uint64_t * uint32_t 1");
47  TEST_EQ(v * (uint32_t)256, u, "uint64_t * uint32_t 256");
48}
49
50
51/* Test SafeMemcmp */
52static void SafeMemcmpTest(void) {
53  /* Zero-length strings are equal */
54  TEST_EQ(0, SafeMemcmp("APPLE", "TIGER", 0), "SafeMemcmp() size=0");
55
56  /* Test equal arrays */
57  TEST_EQ(0, SafeMemcmp("clonebob", "clonebob", 8), "SafeMemcmp() equal");
58  /* Inequality past end of array doesn't affect result */
59  TEST_EQ(0, SafeMemcmp("clonebob", "clonedan", 5), "SafeMemcmp() equal2");
60
61  TEST_EQ(1, SafeMemcmp("APPLE", "TIGER", 5), "SafeMemcmp() unequal");
62  TEST_EQ(1, SafeMemcmp("APPLE", "APPLe", 5), "SafeMemcmp() unequal 2");
63}
64
65
66int main(int argc, char* argv[]) {
67  int error_code = 0;
68
69  MacrosTest();
70  SafeMemcmpTest();
71
72  if (!gTestSuccess)
73    error_code = 255;
74
75  return error_code;
76}
77