1
2 /**
3 * Copyright (C) 2018-present MongoDB, Inc.
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the Server Side Public License, version 1,
7 * as published by MongoDB, Inc.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * Server Side Public License for more details.
13 *
14 * You should have received a copy of the Server Side Public License
15 * along with this program. If not, see
16 * <http://www.mongodb.com/licensing/server-side-public-license>.
17 *
18 * As a special exception, the copyright holders give permission to link the
19 * code of portions of this program with the OpenSSL library under certain
20 * conditions as described in each individual source file and distribute
21 * linked combinations including the program with the OpenSSL library. You
22 * must comply with the Server Side Public License in all respects for
23 * all of the code used other than as permitted herein. If you modify file(s)
24 * with this exception, you may extend this exception to your version of the
25 * file(s), but you are not obligated to do so. If you do not wish to do so,
26 * delete this exception statement from your version. If you delete this
27 * exception statement from all source files in the program, then also delete
28 * it in the license file.
29 */
30
31 #include "mongo/platform/basic.h"
32
33 #include "mongo/db/query/collation/collator_interface_mock.h"
34
35 #include <algorithm>
36 #include <cctype>
37 #include <string>
38
39 #include "mongo/stdx/memory.h"
40 #include "mongo/util/assert_util.h"
41
42 namespace mongo {
43
44 namespace {
45
mockTypeToString(CollatorInterfaceMock::MockType type)46 std::string mockTypeToString(CollatorInterfaceMock::MockType type) {
47 switch (type) {
48 case CollatorInterfaceMock::MockType::kReverseString:
49 return "mock_reverse_string";
50 case CollatorInterfaceMock::MockType::kAlwaysEqual:
51 return "mock_always_equal";
52 case CollatorInterfaceMock::MockType::kToLowerString:
53 return "mock_to_lower_string";
54 }
55
56 MONGO_UNREACHABLE;
57 }
58
59 } // namespace
60
CollatorInterfaceMock(MockType mockType)61 CollatorInterfaceMock::CollatorInterfaceMock(MockType mockType)
62 : CollatorInterface(CollationSpec(mockTypeToString(mockType), "mock_version")),
63 _mockType(mockType) {}
64
clone() const65 std::unique_ptr<CollatorInterface> CollatorInterfaceMock::clone() const {
66 auto clone = stdx::make_unique<CollatorInterfaceMock>(_mockType);
67 return {std::move(clone)};
68 }
69
compare(StringData left,StringData right) const70 int CollatorInterfaceMock::compare(StringData left, StringData right) const {
71 switch (_mockType) {
72 case MockType::kReverseString: {
73 std::string leftString = left.toString();
74 std::string rightString = right.toString();
75 std::reverse(leftString.begin(), leftString.end());
76 std::reverse(rightString.begin(), rightString.end());
77 StringData leftReversed(leftString);
78 StringData rightReversed(rightString);
79 return leftReversed.compare(rightReversed);
80 }
81 case MockType::kToLowerString: {
82 std::string leftString = left.toString();
83 std::string rightString = right.toString();
84 std::transform(leftString.begin(), leftString.end(), leftString.begin(), ::tolower);
85 std::transform(rightString.begin(), rightString.end(), rightString.begin(), ::tolower);
86 StringData leftLower(leftString);
87 StringData rightLower(rightString);
88 return leftLower.compare(rightLower);
89 }
90 case MockType::kAlwaysEqual:
91 return 0;
92 }
93
94 MONGO_UNREACHABLE;
95 }
96
getComparisonKey(StringData stringData) const97 CollatorInterface::ComparisonKey CollatorInterfaceMock::getComparisonKey(
98 StringData stringData) const {
99 switch (_mockType) {
100 case MockType::kReverseString: {
101 std::string keyDataString = stringData.toString();
102 std::reverse(keyDataString.begin(), keyDataString.end());
103 return makeComparisonKey(std::move(keyDataString));
104 }
105 case MockType::kToLowerString: {
106 std::string keyDataString = stringData.toString();
107 std::transform(
108 keyDataString.begin(), keyDataString.end(), keyDataString.begin(), ::tolower);
109 return makeComparisonKey(std::move(keyDataString));
110 }
111 case MockType::kAlwaysEqual:
112 return makeComparisonKey("always_equal");
113 }
114
115 MONGO_UNREACHABLE;
116 }
117
118 } // namespace mongo
119