summaryrefslogtreecommitdiff
path: root/src/mongo/base/data_range_test.cpp
blob: f45c6e26bbf7c7fda77f57c0777de344097bf475 (plain)
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
/**
 *    Copyright (C) 2018-present MongoDB, Inc.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the Server Side Public License, version 1,
 *    as published by MongoDB, Inc.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    Server Side Public License for more details.
 *
 *    You should have received a copy of the Server Side Public License
 *    along with this program. If not, see
 *    <http://www.mongodb.com/licensing/server-side-public-license>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the Server Side Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
 *    delete this exception statement from your version. If you delete this
 *    exception statement from all source files in the program, then also delete
 *    it in the license file.
 */

#include "mongo/base/data_range.h"

#include <cstring>

#include "mongo/base/data_type_endian.h"
#include "mongo/platform/endian.h"
#include "mongo/unittest/unittest.h"

namespace mongo {

TEST(DataRange, ConstDataRange) {
    unsigned char buf[sizeof(uint32_t) * 3];
    uint32_t native = 1234;
    uint32_t le = endian::nativeToLittle(native);
    uint32_t be = endian::nativeToBig(native);

    std::memcpy(buf, &native, sizeof(uint32_t));
    std::memcpy(buf + sizeof(uint32_t), &le, sizeof(uint32_t));
    std::memcpy(buf + sizeof(uint32_t) * 2, &be, sizeof(uint32_t));

    ConstDataRange cdv(buf, buf + sizeof(buf));

    ASSERT_EQUALS(native, cdv.read<uint32_t>());
    ASSERT_EQUALS(native, cdv.read<LittleEndian<uint32_t>>(sizeof(uint32_t)));
    ASSERT_EQUALS(native, cdv.read<BigEndian<uint32_t>>(sizeof(uint32_t) * 2));

    auto result = cdv.readNoThrow<uint32_t>(sizeof(uint32_t) * 3);
    ASSERT_EQUALS(false, result.isOK());
    ASSERT_EQUALS(ErrorCodes::Overflow, result.getStatus().code());
}

TEST(DataRange, ConstDataRangeType) {
    char buf[] = "foo";

    ConstDataRange cdr(buf, buf + sizeof(buf));

    ConstDataRange out(nullptr, nullptr);

    auto inner = cdr.readIntoNoThrow(&out);

    ASSERT_OK(inner);
    ASSERT_EQUALS(buf, out.data());
}

TEST(DataRange, DataRange) {
    uint8_t buf[sizeof(uint32_t) * 3];
    uint32_t native = 1234;

    DataRange dv(buf, buf + sizeof(buf));

    ASSERT_OK(dv.writeNoThrow(native));
    ASSERT_OK(dv.writeNoThrow(LittleEndian<uint32_t>(native), sizeof(uint32_t)));
    ASSERT_OK(dv.writeNoThrow(BigEndian<uint32_t>(native), sizeof(uint32_t) * 2));

    auto result = dv.writeNoThrow(native, sizeof(uint32_t) * 3);
    ASSERT_NOT_OK(result);
    ASSERT_EQUALS(ErrorCodes::Overflow, result.code());

    ASSERT_EQUALS(native, dv.read<uint32_t>());
    ASSERT_EQUALS(native, dv.read<LittleEndian<uint32_t>>(sizeof(uint32_t)));
    ASSERT_EQUALS(native, dv.read<BigEndian<uint32_t>>(sizeof(uint32_t) * 2));

    ASSERT_NOT_OK(dv.readNoThrow<uint32_t>(sizeof(uint32_t) * 3));
}

TEST(DataRange, DataRangeType) {
    char buf[] = "foo";
    char buf2[] = "barZ";

    DataRange dr(buf, buf + sizeof(buf) + -1);

    DataRange out(nullptr, nullptr);

    Status status = dr.readIntoNoThrow(&out);

    ASSERT_OK(status);
    ASSERT_EQUALS(buf, out.data());

    dr = DataRange(buf2, buf2 + sizeof(buf2) + -1);
    status = dr.writeNoThrow(out);

    ASSERT_OK(status);
    ASSERT_EQUALS(std::string("fooZ"), buf2);
}

TEST(DataRange, InitFromContainer) {
    std::vector<uint8_t> vec(20);
    ConstDataRange dr(vec);
    DataRange out(nullptr, nullptr);

    ASSERT_OK(dr.readIntoNoThrow(&out));

    DataRange mutableDr(vec);
    ASSERT_OK(mutableDr.writeNoThrow<int>(6));

    std::array<char, 5> array;
    DataRange arrDR(array);
    auto status = arrDR.writeNoThrow<uint64_t>(std::numeric_limits<uint64_t>::max());
    ASSERT_EQUALS(status, ErrorCodes::Overflow);
}

}  // namespace mongo