1 //===-- Unittests for Array -----------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "src/__support/CPP/array.h"
10 #include "test/UnitTest/Test.h"
11
12 using LIBC_NAMESPACE::cpp::array;
13
TEST(LlvmLibcArrayTest,Basic)14 TEST(LlvmLibcArrayTest, Basic) {
15 array<int, 3> a = {0, 1, 2};
16
17 ASSERT_EQ(a.data(), &a.front());
18 ASSERT_EQ(a.front(), 0);
19 ASSERT_EQ(a.back(), 2);
20 ASSERT_EQ(a.size(), size_t{3});
21 ASSERT_EQ(a[1], 1);
22 ASSERT_FALSE(a.empty());
23 ASSERT_NE(a.begin(), a.end());
24 ASSERT_EQ(*a.begin(), a.front());
25
26 auto it = a.rbegin();
27 ASSERT_EQ(*it, 2);
28 ASSERT_EQ(*(++it), 1);
29 ASSERT_EQ(*(++it), 0);
30
31 for (int &x : a)
32 ASSERT_GE(x, 0);
33 }
34
35 // Test const_iterator and const variant methods.
TEST(LlvmLibcArrayTest,Const)36 TEST(LlvmLibcArrayTest, Const) {
37 const array<int, 3> z = {3, 4, 5};
38
39 ASSERT_EQ(3, z.front());
40 ASSERT_EQ(4, z[1]);
41 ASSERT_EQ(5, z.back());
42 ASSERT_EQ(3, *z.data());
43
44 // begin, cbegin, end, cend
45 array<int, 3>::const_iterator it2 = z.begin();
46 ASSERT_EQ(*it2, z.front());
47 it2 = z.cbegin();
48 ASSERT_EQ(*it2, z.front());
49 it2 = z.end();
50 ASSERT_NE(it2, z.begin());
51 it2 = z.cend();
52 ASSERT_NE(it2, z.begin());
53
54 // rbegin, crbegin, rend, crend
55 array<int, 3>::const_reverse_iterator it = z.rbegin();
56 ASSERT_EQ(*it, z.back());
57 it = z.crbegin();
58 ASSERT_EQ(*it, z.back());
59 it = z.rend();
60 ASSERT_EQ(*--it, z.front());
61 it = z.crend();
62 ASSERT_EQ(*--it, z.front());
63
64 for (const int &x : z)
65 ASSERT_GE(x, 0);
66 }
67