1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
//===-- Unittests for bcmp ------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/string/bcmp.h"
#include "utils/UnitTest/Test.h"
TEST(LlvmLibcBcmpTest, CmpZeroByte) {
const char *lhs = "ab";
const char *rhs = "bc";
EXPECT_EQ(__llvm_libc::bcmp(lhs, rhs, 0), 0);
}
TEST(LlvmLibcBcmpTest, LhsRhsAreTheSame) {
const char *lhs = "ab";
const char *rhs = "ab";
EXPECT_EQ(__llvm_libc::bcmp(lhs, rhs, 2), 0);
}
TEST(LlvmLibcBcmpTest, LhsBeforeRhsLexically) {
const char *lhs = "ab";
const char *rhs = "ac";
EXPECT_EQ(__llvm_libc::bcmp(lhs, rhs, 2), 1);
}
TEST(LlvmLibcBcmpTest, LhsAfterRhsLexically) {
const char *lhs = "ac";
const char *rhs = "ab";
EXPECT_EQ(__llvm_libc::bcmp(lhs, rhs, 2), 1);
}
TEST(LlvmLibcBcmpTest, Sweep) {
static constexpr size_t kMaxSize = 1024;
char lhs[kMaxSize];
char rhs[kMaxSize];
const auto reset = [](char *const ptr) {
for (size_t i = 0; i < kMaxSize; ++i)
ptr[i] = 'a';
};
reset(lhs);
reset(rhs);
for (size_t i = 0; i < kMaxSize; ++i)
EXPECT_EQ(__llvm_libc::bcmp(lhs, rhs, i), 0);
reset(lhs);
reset(rhs);
for (size_t i = 0; i < kMaxSize; ++i) {
rhs[i] = 'b';
EXPECT_EQ(__llvm_libc::bcmp(lhs, rhs, kMaxSize), 1);
rhs[i] = 'a';
}
}
|
