1/*
2 * Copyright (C) 2019 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27
28#include <wtf/Packed.h>
29
30namespace TestWebKitAPI {
31
32struct PackedPair {
33 PackedPtr<uint8_t> key { nullptr };
34 PackedPtr<uint8_t> value { nullptr };
35};
36
37TEST(WTF_Packed, StructSize)
38{
39 EXPECT_EQ(alignof(PackedPair), 1U);
40#if CPU(X86_64)
41 EXPECT_EQ(sizeof(PackedPair), 12U);
42#endif
43 {
44 Packed<double> value;
45 value = 4.2;
46 EXPECT_EQ(value.get(), 4.2);
47 }
48 {
49 uint64_t originalValue = 0xff00ff00dd00dd00UL;
50 Packed<uint64_t> value;
51 value = originalValue;
52 EXPECT_EQ(value.get(), originalValue);
53 EXPECT_EQ(alignof(Packed<uint64_t>), 1U);
54 EXPECT_EQ(sizeof(Packed<uint64_t>), sizeof(uint64_t));
55 }
56}
57
58TEST(WTF_Packed, AssignAndGet)
59{
60 {
61 PackedPtr<uint8_t> key { nullptr };
62 static_assert(WTF_CPU_EFFECTIVE_ADDRESS_WIDTH != 64, "");
63 uint8_t* max = bitwise_cast<uint8_t*>(static_cast<uintptr_t>(((1ULL) << WTF_CPU_EFFECTIVE_ADDRESS_WIDTH) - 1));
64 key = max;
65 EXPECT_EQ(key.get(), max);
66 }
67}
68
69TEST(WTF_Packed, PackedAlignedPtr)
70{
71 {
72 PackedAlignedPtr<uint8_t, 256> key { nullptr };
73 EXPECT_LE(sizeof(key), 5U);
74 }
75 {
76 PackedAlignedPtr<uint8_t, 16> key { nullptr };
77#if OS(DARWIN) && CPU(ARM64)
78 EXPECT_EQ(sizeof(key), 4U);
79#else
80 EXPECT_LE(sizeof(key), 6U);
81#endif
82 }
83}
84
85} // namespace TestWebKitAPI
86