1 /*
2 * Copyright 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 //#define LOG_NDEBUG 0
18 #define LOG_TAG "C2_test"
19
20 #include <gtest/gtest.h>
21
22 #include <C2.h>
23
24 /* ======================================= STATIC TESTS ======================================= */
25
26 template<int N>
27 struct c2_const_checker
28 {
numc2_const_checker29 inline constexpr static int num() { return N; }
30 };
31
32 constexpr auto min_i32_i32 = c2_min(int32_t(1), int32_t(2));
33 static_assert(std::is_same<decltype(min_i32_i32), const int32_t>::value, "should be int32_t");
34 constexpr auto min_i32_i64 = c2_min(int32_t(3), int64_t(2));
35 static_assert(std::is_same<decltype(min_i32_i64), const int64_t>::value, "should be int64_t");
36 constexpr auto min_i8_i32 = c2_min(int8_t(0xff), int32_t(0xffffffff));
37 static_assert(std::is_same<decltype(min_i8_i32), const int32_t>::value, "should be int32_t");
38
39 static_assert(c2_const_checker<min_i32_i32>::num() == 1, "should be 1");
40 static_assert(c2_const_checker<min_i32_i64>::num() == 2, "should be 2");
41 static_assert(c2_const_checker<min_i8_i32>::num() == 0xffffffff, "should be 0xffffffff");
42
43 constexpr auto min_u32_u32 = c2_min(uint32_t(1), uint32_t(2));
44 static_assert(std::is_same<decltype(min_u32_u32), const uint32_t>::value, "should be uint32_t");
45 constexpr auto min_u32_u64 = c2_min(uint32_t(3), uint64_t(2));
46 static_assert(std::is_same<decltype(min_u32_u64), const uint32_t>::value, "should be uint32_t");
47 constexpr auto min_u32_u8 = c2_min(uint32_t(0xffffffff), uint8_t(0xff));
48 static_assert(std::is_same<decltype(min_u32_u8), const uint8_t>::value, "should be uint8_t");
49
50 static_assert(c2_const_checker<min_u32_u32>::num() == 1, "should be 1");
51 static_assert(c2_const_checker<min_u32_u64>::num() == 2, "should be 2");
52 static_assert(c2_const_checker<min_u32_u8>::num() == 0xff, "should be 0xff");
53
54 constexpr auto max_i32_i32 = c2_max(int32_t(1), int32_t(2));
55 static_assert(std::is_same<decltype(max_i32_i32), const int32_t>::value, "should be int32_t");
56 constexpr auto max_i32_i64 = c2_max(int32_t(3), int64_t(2));
57 static_assert(std::is_same<decltype(max_i32_i64), const int64_t>::value, "should be int64_t");
58 constexpr auto max_i8_i32 = c2_max(int8_t(0xff), int32_t(0xffffffff));
59 static_assert(std::is_same<decltype(max_i8_i32), const int32_t>::value, "should be int32_t");
60
61 static_assert(c2_const_checker<max_i32_i32>::num() == 2, "should be 2");
62 static_assert(c2_const_checker<max_i32_i64>::num() == 3, "should be 3");
63 static_assert(c2_const_checker<max_i8_i32>::num() == 0xffffffff, "should be 0xffffffff");
64
65 constexpr auto max_u32_u32 = c2_max(uint32_t(1), uint32_t(2));
66 static_assert(std::is_same<decltype(max_u32_u32), const uint32_t>::value, "should be uint32_t");
67 constexpr auto max_u32_u64 = c2_max(uint32_t(3), uint64_t(2));
68 static_assert(std::is_same<decltype(max_u32_u64), const uint64_t>::value, "should be uint64_t");
69 constexpr auto max_u32_u8 = c2_max(uint32_t(0x7fffffff), uint8_t(0xff));
70 static_assert(std::is_same<decltype(max_u32_u8), const uint32_t>::value, "should be uint32_t");
71
72 static_assert(c2_const_checker<max_u32_u32>::num() == 2, "should be 2");
73 static_assert(c2_const_checker<max_u32_u64>::num() == 3, "should be 3");
74 static_assert(c2_const_checker<max_u32_u8>::num() == 0x7fffffff, "should be 0x7fffffff");
75
76 /* ======================================= COUNTER TESTS ======================================= */
77
c2_cntr_static_test()78 void c2_cntr_static_test() {
79 // sanity checks for construction/assignment
80 constexpr c2_cntr32_t c32_a(123);
81 constexpr c2_cntr64_t c64_a(-456);
82 c2_cntr32_t c32_b __unused = c64_a;
83 // c32_b = 64.; // DISALLOWED
84 // c2_cntr64_t c64_b = c32_a; // DISALLOWED
85
86 // sanity checks for some constexpr operators
87 static_assert(std::is_same<decltype(c32_a + c64_a), decltype(c64_a + c32_a)>::value, "+ should result same type");
88 static_assert(c32_a + c64_a == c2_cntr32_t(-333), "123 + -456 = -333");
89 static_assert(c32_a + c32_a == c2_cntr32_t(246), "123 + 123 = 246");
90 static_assert(c64_a + c32_a == c2_cntr32_t(-333), "-456 + 123 = 579");
91 static_assert(std::is_same<decltype(c32_a + 1), decltype(1 + c32_a)>::value, "+ should result same type");
92 static_assert(c32_a + 456 == c2_cntr32_t(579), "123 + 456 = 579");
93 static_assert(456 + c64_a == c2_cntr64_t(0), "456 + -456 = 0");
94 static_assert(std::is_same<decltype(c32_a - c64_a), decltype(c64_a - c32_a)>::value, "- should result same type");
95 static_assert(c32_a - c64_a == c2_cntr32_t(579), "123 - -456 = 579");
96 static_assert(c32_a - c32_a == c2_cntr32_t(0), "123 - 123 = 0");
97 static_assert(c64_a - c32_a == c2_cntr32_t(-579), "-456 - 123 = -579");
98 static_assert(std::is_same<decltype(c32_a - 1), decltype(1 - c32_a)>::value, "- should result same type");
99 static_assert(c32_a - 456 == c2_cntr32_t(-333), "123 - 456 = -333");
100 static_assert(456 - c64_a == c2_cntr64_t(912), "456 - -456 = 912");
101 static_assert(std::is_same<decltype(c32_a * c64_a), decltype(c64_a * c32_a)>::value, "* should result same type");
102 static_assert(c32_a * c64_a == c2_cntr32_t(-56088), "123 * -456 = -56088");
103 static_assert(c32_a * c32_a == c2_cntr32_t(15129), "123 * 123 = 15129");
104 static_assert(c64_a * c32_a == c2_cntr32_t(-56088), "-456 * 123 = -56088");
105 static_assert(std::is_same<decltype(c32_a * 1), decltype(1 * c32_a)>::value, "* should result same type");
106 static_assert(c32_a * 456 == c2_cntr32_t(56088), "123 * 456 = 56088");
107 static_assert(456 * c64_a == c2_cntr64_t(-207936), "456 * -456 = -207936");
108
109 static_assert((c32_a << 26u) == c2_cntr32_t(0xEC000000), "123 << 26 = 0xEC000000");
110
111 // sanity checks for unary operators
112 static_assert(c2_cntr32_t(1) == +c2_cntr32_t(1), "1 == +1");
113 static_assert(c2_cntr32_t(1) == -c2_cntr32_t(-1), "1 == --1");
114
115 // sanity checks for comparison
116 using c8_t = c2_cntr_t<uint8_t>;
117 static_assert(c8_t(-0x80) > c8_t(0x7f), "80 > 7F");
118 static_assert(c8_t(-0x80) >= c8_t(0x7f), "80 >= 7F");
119 static_assert(c8_t(0x7f) > c8_t(0x7e), "7F > 7E");
120 static_assert(c8_t(0x7f) >= c8_t(0x7e), "7F >= 7E");
121 static_assert(!(c8_t(-0x80) > c8_t(0)), "80 !> 00");
122 static_assert(!(c8_t(-0x80) >= c8_t(0)), "80 !>= 00");
123 static_assert(!(c8_t(-0x80) > c8_t(-0x80)), "80 !> 80");
124 static_assert(c8_t(-0x80) >= c8_t(-0x80), "80 >= 80");
125
126 static_assert(c8_t(-0x80) == c8_t(0x80), "80 == 80");
127 static_assert(!(c8_t(-0x80) == c8_t(0)), "80 != 0");
128 static_assert(c8_t(-0x80) != c8_t(0x7f), "80 != 7F");
129 static_assert(!(c8_t(0x7f) != c8_t(0x7f)), "80 != 7F");
130
131 static_assert(c8_t(0x7f) < c8_t(-0x80), "7F < 80");
132 static_assert(c8_t(0x7f) <= c8_t(-0x80), "7F < 80");
133 static_assert(c8_t(0x7e) < c8_t(0x7f), "7E < 7F");
134 static_assert(c8_t(0x7e) <= c8_t(0x7f), "7E < 7F");
135 static_assert(!(c8_t(-0x40) < c8_t(0x40)), "-40 !< 40");
136 static_assert(!(c8_t(-0x40) <= c8_t(0x40)), "-40 !<= 40");
137 static_assert(!(c8_t(-0x40) < c8_t(-0x40)), "-40 !< -40");
138 static_assert(c8_t(-0x40) <= c8_t(-0x40), "-40 <= -40");
139
140 static_assert(c2_cntr32_t(-0x7fffffff - 1) > c2_cntr32_t(0x7fffffff), "80 > 7F");
141 static_assert(!(c2_cntr32_t(-0x7fffffff - 1) > c2_cntr32_t(0)), "80 !> 00");
142 static_assert(c2_cntr32_t(1) == c2_cntr32_t(c2_cntr64_t(0x100000001ul)), "1 == 1");
143 }
144
145 class C2Test : public ::testing::Test {
146 };
147
TEST_F(C2Test,CounterTest)148 TEST_F(C2Test, CounterTest) {
149 c2_cntr32_t c32_a(123);
150 c2_cntr64_t c64_a(-456);
151 EXPECT_EQ(c32_a += 3, c2_cntr32_t(126));
152 EXPECT_EQ(c32_a += c64_a, c2_cntr32_t(-330));
153 EXPECT_EQ(c32_a <<= 2u, c2_cntr32_t(-1320));
154 EXPECT_EQ(c64_a *= 3, c2_cntr64_t(-1368));
155 EXPECT_EQ(c32_a -= c64_a, c2_cntr32_t(48));
156 EXPECT_EQ(c32_a -= 40, c2_cntr32_t(8));
157 EXPECT_EQ(c32_a *= c32_a, c2_cntr32_t(64));
158 }
159
160