-
Notifications
You must be signed in to change notification settings - Fork 10.8k
/
ArrayRefTest.cpp
166 lines (141 loc) · 5.61 KB
/
ArrayRefTest.cpp
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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
//===- llvm/unittest/ADT/ArrayRefTest.cpp - ArrayRef unit tests -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
#include <vector>
using namespace llvm;
// Check that the ArrayRef-of-pointer converting constructor only allows adding
// cv qualifiers (not removing them, or otherwise changing the type)
static_assert(
std::is_convertible<ArrayRef<int *>, ArrayRef<const int *>>::value,
"Adding const");
static_assert(
std::is_convertible<ArrayRef<int *>, ArrayRef<volatile int *>>::value,
"Adding volatile");
static_assert(!std::is_convertible<ArrayRef<int *>, ArrayRef<float *>>::value,
"Changing pointer of one type to a pointer of another");
static_assert(
!std::is_convertible<ArrayRef<const int *>, ArrayRef<int *>>::value,
"Removing const");
static_assert(
!std::is_convertible<ArrayRef<volatile int *>, ArrayRef<int *>>::value,
"Removing volatile");
namespace {
TEST(ArrayRefTest, AllocatorCopy) {
BumpPtrAllocator Alloc;
static const uint16_t Words1[] = { 1, 4, 200, 37 };
ArrayRef<uint16_t> Array1 = makeArrayRef(Words1, 4);
static const uint16_t Words2[] = { 11, 4003, 67, 64000, 13 };
ArrayRef<uint16_t> Array2 = makeArrayRef(Words2, 5);
ArrayRef<uint16_t> Array1c = Array1.copy(Alloc);
ArrayRef<uint16_t> Array2c = Array2.copy(Alloc);
EXPECT_TRUE(Array1.equals(Array1c));
EXPECT_NE(Array1.data(), Array1c.data());
EXPECT_TRUE(Array2.equals(Array2c));
EXPECT_NE(Array2.data(), Array2c.data());
// Check that copy can cope with uninitialized memory.
struct NonAssignable {
const char *Ptr;
NonAssignable(const char *Ptr) : Ptr(Ptr) {}
NonAssignable(const NonAssignable &RHS) = default;
void operator=(const NonAssignable &RHS) { assert(RHS.Ptr != nullptr); }
bool operator==(const NonAssignable &RHS) const { return Ptr == RHS.Ptr; }
} Array3Src[] = {"hello", "world"};
ArrayRef<NonAssignable> Array3Copy = makeArrayRef(Array3Src).copy(Alloc);
EXPECT_EQ(makeArrayRef(Array3Src), Array3Copy);
EXPECT_NE(makeArrayRef(Array3Src).data(), Array3Copy.data());
}
TEST(ArrayRefTest, DropBack) {
static const int TheNumbers[] = {4, 8, 15, 16, 23, 42};
ArrayRef<int> AR1(TheNumbers);
ArrayRef<int> AR2(TheNumbers, AR1.size() - 1);
EXPECT_TRUE(AR1.drop_back().equals(AR2));
// Check that drop_back accepts size_t-sized numbers.
ArrayRef<char> AR3((const char *)0x10000, SIZE_MAX - 0x10000);
EXPECT_EQ(1U, AR3.drop_back(AR3.size() - 1).size());
}
TEST(ArrayRefTest, DropFront) {
static const int TheNumbers[] = {4, 8, 15, 16, 23, 42};
ArrayRef<int> AR1(TheNumbers);
ArrayRef<int> AR2(&TheNumbers[2], AR1.size() - 2);
EXPECT_TRUE(AR1.drop_front(2).equals(AR2));
// Check that drop_front accepts size_t-sized numbers.
ArrayRef<char> AR3((const char *)0x10000, SIZE_MAX - 0x10000);
EXPECT_EQ(1U, AR3.drop_front(AR3.size() - 1).size());
}
TEST(ArrayRefTest, Equals) {
static const int A1[] = {1, 2, 3, 4, 5, 6, 7, 8};
ArrayRef<int> AR1(A1);
EXPECT_TRUE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 8}));
EXPECT_FALSE(AR1.equals({8, 1, 2, 4, 5, 6, 6, 7}));
EXPECT_FALSE(AR1.equals({2, 4, 5, 6, 6, 7, 8, 1}));
EXPECT_FALSE(AR1.equals({0, 1, 2, 4, 5, 6, 6, 7}));
EXPECT_FALSE(AR1.equals({1, 2, 42, 4, 5, 6, 7, 8}));
EXPECT_FALSE(AR1.equals({42, 2, 3, 4, 5, 6, 7, 8}));
EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 42}));
EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7}));
EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 8, 9}));
ArrayRef<int> AR1a = AR1.drop_back();
EXPECT_TRUE(AR1a.equals({1, 2, 3, 4, 5, 6, 7}));
EXPECT_FALSE(AR1a.equals({1, 2, 3, 4, 5, 6, 7, 8}));
ArrayRef<int> AR1b = AR1a.slice(2, 4);
EXPECT_TRUE(AR1b.equals({3, 4, 5, 6}));
EXPECT_FALSE(AR1b.equals({2, 3, 4, 5, 6}));
EXPECT_FALSE(AR1b.equals({3, 4, 5, 6, 7}));
}
TEST(ArrayRefTest, EmptyEquals) {
EXPECT_TRUE(ArrayRef<unsigned>() == ArrayRef<unsigned>());
}
TEST(ArrayRefTest, Slice) {
// Check that slice accepts size_t-sized numbers.
ArrayRef<char> AR((const char *)0x10000, SIZE_MAX - 0x10000);
EXPECT_EQ(1U, AR.slice(AR.size() - 1).size());
EXPECT_EQ(AR.size() - 1, AR.slice(1, AR.size() - 1).size());
}
TEST(ArrayRefTest, ConstConvert) {
int buf[4];
for (int i = 0; i < 4; ++i)
buf[i] = i;
static int *A[] = {&buf[0], &buf[1], &buf[2], &buf[3]};
ArrayRef<const int *> a((ArrayRef<int *>(A)));
a = ArrayRef<int *>(A);
}
static std::vector<int> ReturnTest12() { return {1, 2}; }
static void ArgTest12(ArrayRef<int> A) {
EXPECT_EQ(2U, A.size());
EXPECT_EQ(1, A[0]);
EXPECT_EQ(2, A[1]);
}
TEST(ArrayRefTest, InitializerList) {
std::initializer_list<int> init_list = { 0, 1, 2, 3, 4 };
ArrayRef<int> A = init_list;
for (int i = 0; i < 5; ++i)
EXPECT_EQ(i, A[i]);
std::vector<int> B = ReturnTest12();
A = B;
EXPECT_EQ(1, A[0]);
EXPECT_EQ(2, A[1]);
ArgTest12({1, 2});
}
// Test that makeArrayRef works on ArrayRef (no-op)
TEST(ArrayRefTest, makeArrayRef) {
static const int A1[] = {1, 2, 3, 4, 5, 6, 7, 8};
// No copy expected for non-const ArrayRef (true no-op)
ArrayRef<int> AR1(A1);
ArrayRef<int> &AR1Ref = makeArrayRef(AR1);
EXPECT_EQ(&AR1, &AR1Ref);
// A copy is expected for non-const ArrayRef (thin copy)
const ArrayRef<int> AR2(A1);
const ArrayRef<int> &AR2Ref = makeArrayRef(AR2);
EXPECT_NE(&AR2Ref, &AR2);
EXPECT_TRUE(AR2.equals(AR2Ref));
}
} // end anonymous namespace