1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc. All rights reserved.
3 // https://developers.google.com/protocol-buffers/
4 //
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8 //
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18 //
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30
31 #include <google/protobuf/arenastring.h>
32
33 #include <algorithm>
34 #include <cstdlib>
35 #include <memory>
36 #include <string>
37 #include <vector>
38
39 #include <google/protobuf/stubs/logging.h>
40 #include <google/protobuf/stubs/common.h>
41 #include <google/protobuf/io/coded_stream.h>
42 #include <google/protobuf/io/zero_copy_stream_impl.h>
43 #include <google/protobuf/generated_message_util.h>
44 #include <gtest/gtest.h>
45 #include <google/protobuf/stubs/strutil.h>
46
47
48 // Must be included last.
49 #include <google/protobuf/port_def.inc>
50
51 namespace google {
52 namespace protobuf {
53
54 using internal::ArenaStringPtr;
55
WrapString(const char * value)56 static std::string WrapString(const char* value) { return value; }
57
58 using EmptyDefault = ArenaStringPtr::EmptyDefault;
59
60 const internal::LazyString nonempty_default{{{"default", 7}}, {nullptr}};
61
62 // Test ArenaStringPtr with arena == NULL.
TEST(ArenaStringPtrTest,ArenaStringPtrOnHeap)63 TEST(ArenaStringPtrTest, ArenaStringPtrOnHeap) {
64 ArenaStringPtr field;
65 const std::string* empty_default = &internal::GetEmptyString();
66 field.UnsafeSetDefault(empty_default);
67 EXPECT_EQ(std::string(""), field.Get());
68 field.Set(empty_default, WrapString("Test short"), NULL);
69 EXPECT_EQ(std::string("Test short"), field.Get());
70 field.Set(empty_default, WrapString("Test long long long long value"), NULL);
71 EXPECT_EQ(std::string("Test long long long long value"), field.Get());
72 field.Set(empty_default, std::string(""), NULL);
73 field.Destroy(empty_default, NULL);
74
75 ArenaStringPtr field2;
76 field2.UnsafeSetDefault(empty_default);
77 std::string* mut = field2.Mutable(EmptyDefault{}, NULL);
78 EXPECT_EQ(mut, field2.Mutable(EmptyDefault{}, NULL));
79 EXPECT_EQ(mut, &field2.Get());
80 EXPECT_NE(empty_default, mut);
81 EXPECT_EQ(std::string(""), *mut);
82 *mut = "Test long long long long value"; // ensure string allocates storage
83 EXPECT_EQ(std::string("Test long long long long value"), field2.Get());
84 field2.Destroy(empty_default, NULL);
85
86 ArenaStringPtr field3;
87 field3.UnsafeSetDefault(nullptr);
88 mut = field3.Mutable(nonempty_default, NULL);
89 EXPECT_EQ(mut, field3.Mutable(nonempty_default, NULL));
90 EXPECT_EQ(mut, &field3.Get());
91 EXPECT_NE(nullptr, mut);
92 EXPECT_EQ(std::string("default"), *mut);
93 *mut = "Test long long long long value"; // ensure string allocates storage
94 EXPECT_EQ(std::string("Test long long long long value"), field3.Get());
95 field3.Destroy(nullptr, NULL);
96 }
97
TEST(ArenaStringPtrTest,ArenaStringPtrOnArena)98 TEST(ArenaStringPtrTest, ArenaStringPtrOnArena) {
99 Arena arena;
100 ArenaStringPtr field;
101 const std::string* empty_default = &internal::GetEmptyString();
102 field.UnsafeSetDefault(empty_default);
103 EXPECT_EQ(std::string(""), field.Get());
104 field.Set(empty_default, WrapString("Test short"), &arena);
105 EXPECT_EQ(std::string("Test short"), field.Get());
106 field.Set(empty_default, WrapString("Test long long long long value"),
107 &arena);
108 EXPECT_EQ(std::string("Test long long long long value"), field.Get());
109 field.Set(empty_default, std::string(""), &arena);
110 field.Destroy(empty_default, &arena);
111
112 ArenaStringPtr field2;
113 field2.UnsafeSetDefault(empty_default);
114 std::string* mut = field2.Mutable(EmptyDefault{}, &arena);
115 EXPECT_EQ(mut, field2.Mutable(EmptyDefault{}, &arena));
116 EXPECT_EQ(mut, &field2.Get());
117 EXPECT_NE(empty_default, mut);
118 EXPECT_EQ(std::string(""), *mut);
119 *mut = "Test long long long long value"; // ensure string allocates storage
120 EXPECT_EQ(std::string("Test long long long long value"), field2.Get());
121 field2.Destroy(empty_default, &arena);
122
123 ArenaStringPtr field3;
124 field3.UnsafeSetDefault(nullptr);
125 mut = field3.Mutable(nonempty_default, &arena);
126 EXPECT_EQ(mut, field3.Mutable(nonempty_default, &arena));
127 EXPECT_EQ(mut, &field3.Get());
128 EXPECT_NE(nullptr, mut);
129 EXPECT_EQ(std::string("default"), *mut);
130 *mut = "Test long long long long value"; // ensure string allocates storage
131 EXPECT_EQ(std::string("Test long long long long value"), field3.Get());
132 field3.Destroy(nullptr, &arena);
133 }
134
TEST(ArenaStringPtrTest,ArenaStringPtrOnArenaNoSSO)135 TEST(ArenaStringPtrTest, ArenaStringPtrOnArenaNoSSO) {
136 Arena arena;
137 ArenaStringPtr field;
138 const std::string* empty_default = &internal::GetEmptyString();
139 field.UnsafeSetDefault(empty_default);
140 EXPECT_EQ(std::string(""), field.Get());
141
142 // Avoid triggering the SSO optimization by setting the string to something
143 // larger than the internal buffer.
144 field.Set(empty_default, WrapString("Test long long long long value"),
145 &arena);
146 EXPECT_EQ(std::string("Test long long long long value"), field.Get());
147 field.Set(empty_default, std::string(""), &arena);
148 field.Destroy(empty_default, &arena);
149
150 ArenaStringPtr field2;
151 field2.UnsafeSetDefault(empty_default);
152 std::string* mut = field2.Mutable(EmptyDefault{}, &arena);
153 EXPECT_EQ(mut, field2.Mutable(EmptyDefault{}, &arena));
154 EXPECT_EQ(mut, &field2.Get());
155 EXPECT_NE(empty_default, mut);
156 EXPECT_EQ(std::string(""), *mut);
157 *mut = "Test long long long long value"; // ensure string allocates storage
158 EXPECT_EQ(std::string("Test long long long long value"), field2.Get());
159 field2.Destroy(empty_default, &arena);
160
161 ArenaStringPtr field3;
162 field3.UnsafeSetDefault(nullptr);
163 mut = field3.Mutable(nonempty_default, &arena);
164 EXPECT_EQ(mut, field3.Mutable(nonempty_default, &arena));
165 EXPECT_EQ(mut, &field3.Get());
166 EXPECT_NE(nullptr, mut);
167 EXPECT_EQ(std::string("default"), *mut);
168 *mut = "Test long long long long value"; // ensure string allocates storage
169 EXPECT_EQ(std::string("Test long long long long value"), field3.Get());
170 field3.Destroy(nullptr, &arena);
171 }
172
173
174 } // namespace protobuf
175 } // namespace google
176