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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <AK/Checked.h>
#include <AK/Span.h>
#include <string.h>
TEST_CASE(constexpr_default_constructor_is_empty)
{
constexpr Span<int> span;
static_assert(span.is_empty(), "Default constructed span should be empty.");
}
TEST_CASE(implicit_conversion_to_const)
{
constexpr Bytes bytes0;
[[maybe_unused]] constexpr ReadonlyBytes bytes2 = bytes0;
[[maybe_unused]] constexpr ReadonlyBytes bytes3 = static_cast<ReadonlyBytes>(bytes2);
}
TEST_CASE(span_works_with_constant_types)
{
static constexpr u8 buffer[4] { 1, 2, 3, 4 };
constexpr ReadonlyBytes bytes { buffer, 4 };
static_assert(IsConst<RemoveReference<decltype(bytes[1])>>);
static_assert(bytes[2] == 3);
}
TEST_CASE(span_works_with_mutable_types)
{
u8 buffer[4] { 1, 2, 3, 4 };
Bytes bytes { buffer, 4 };
EXPECT_EQ(bytes[2], 3);
++bytes[2];
EXPECT_EQ(bytes[2], 4);
}
TEST_CASE(iterator_behaves_like_loop)
{
u8 buffer[256];
for (int idx = 0; idx < 256; ++idx) {
buffer[idx] = static_cast<u8>(idx);
}
Bytes bytes { buffer, 256 };
size_t idx = 0;
for (auto iter = bytes.begin(); iter < bytes.end(); ++iter) {
EXPECT_EQ(*iter, buffer[idx]);
++idx;
}
}
TEST_CASE(modifying_is_possible)
{
int values_before[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };
int values_after[8] = { 7, 6, 5, 4, 3, 2, 1, 0 };
Span<int> span { values_before, 8 };
for (auto& value : span) {
value = 8 - value;
}
for (int idx = 0; idx < 8; ++idx) {
EXPECT_EQ(values_before[idx], values_after[idx]);
}
}
TEST_CASE(at_and_index_operator_return_same_value)
{
u8 buffer[256];
for (int idx = 0; idx < 256; ++idx) {
buffer[idx] = static_cast<u8>(idx);
}
Bytes bytes { buffer, 256 };
for (int idx = 0; idx < 256; ++idx) {
EXPECT_EQ(buffer[idx], bytes[idx]);
EXPECT_EQ(bytes[idx], bytes.at(idx));
}
}
TEST_CASE(can_subspan_whole_span)
{
static constexpr u8 buffer[16] {};
constexpr ReadonlyBytes bytes { buffer, 16 };
constexpr auto slice = bytes.slice(0, 16);
static_assert(slice.data() == buffer);
static_assert(slice.size() == 16u);
}
TEST_CASE(can_subspan_as_intended)
{
static constexpr u16 buffer[8] { 1, 2, 3, 4, 5, 6, 7, 8 };
constexpr Span<u16 const> span { buffer, 8 };
constexpr auto slice = span.slice(3, 2);
static_assert(slice.size() == 2u);
static_assert(slice[0] == 4);
static_assert(slice[1] == 5);
}
TEST_CASE(span_from_void_pointer)
{
int value = 0;
[[maybe_unused]] Bytes bytes0 { reinterpret_cast<void*>(value), 4 };
[[maybe_unused]] ReadonlyBytes bytes1 { reinterpret_cast<void const*>(value), 4 };
}
TEST_CASE(span_from_c_string)
{
char const* str = "Serenity";
[[maybe_unused]] ReadonlyBytes bytes { str, strlen(str) };
}
TEST_CASE(starts_with)
{
char const* str = "HeyFriends!";
ReadonlyBytes bytes { str, strlen(str) };
char const* str_hey = "Hey";
ReadonlyBytes hey_bytes { str_hey, strlen(str_hey) };
EXPECT(bytes.starts_with(hey_bytes));
char const* str_nah = "Nah";
ReadonlyBytes nah_bytes { str_nah, strlen(str_nah) };
EXPECT(!bytes.starts_with(nah_bytes));
const u8 hey_array[3] = { 'H', 'e', 'y' };
ReadonlyBytes hey_bytes_u8 { hey_array, 3 };
EXPECT(bytes.starts_with(hey_bytes_u8));
}
|
