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gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / 5b51fd5b550a9589f95e677fca801cea565e8d9f / . / unittests / ADT / OptionalTest.cpp
blob: 21e38475d309f50b69e537c1eda4728bcb7d33cd [file] [log] [blame]
David Blaikiea28eda7e2013-02-20 00:26:04 +0000[diff] [blame]1//===- llvm/unittest/ADT/OptionalTest.cpp - Optional unit tests -----------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "gtest/gtest.h"
11#include "llvm/ADT/Optional.h"
12using namespace llvm;
13
14namespace {
15
16struct NonDefaultConstructible {
17 static unsigned CopyConstructions;
18 static unsigned Destructions;
19 static unsigned CopyAssignments;
20 explicit NonDefaultConstructible(int) {
21 }
22 NonDefaultConstructible(const NonDefaultConstructible&) {
23 ++CopyConstructions;
24 }
25 NonDefaultConstructible &operator=(const NonDefaultConstructible&) {
26 ++CopyAssignments;
27 return *this;
28 }
29 ~NonDefaultConstructible() {
30 ++Destructions;
31 }
32 static void ResetCounts() {
33 CopyConstructions = 0;
34 Destructions = 0;
35 CopyAssignments = 0;
36 }
37};
38
39unsigned NonDefaultConstructible::CopyConstructions = 0;
40unsigned NonDefaultConstructible::Destructions = 0;
41unsigned NonDefaultConstructible::CopyAssignments = 0;
42
43// Test fixture
44class OptionalTest : public testing::Test {
45};
46
47TEST_F(OptionalTest, NonDefaultConstructibleTest) {
48 Optional<NonDefaultConstructible> O;
49 EXPECT_FALSE(O);
50}
51
52TEST_F(OptionalTest, ResetTest) {
53 NonDefaultConstructible::ResetCounts();
54 Optional<NonDefaultConstructible> O(NonDefaultConstructible(3));
55 EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
56 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
57 EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
58 NonDefaultConstructible::ResetCounts();
David Blaikie4318fc52013-02-20 06:25:36 +0000[diff] [blame]59 O.reset();
David Blaikiea28eda7e2013-02-20 00:26:04 +0000[diff] [blame]60 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
61 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
62 EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
63}
64
65TEST_F(OptionalTest, InitializationLeakTest) {
66 NonDefaultConstructible::ResetCounts();
67 Optional<NonDefaultConstructible>(NonDefaultConstructible(3));
68 EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
69 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
70 EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
71}
72
73TEST_F(OptionalTest, CopyConstructionTest) {
74 NonDefaultConstructible::ResetCounts();
75 {
76 Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
77 EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
78 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
79 EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
80 NonDefaultConstructible::ResetCounts();
81 Optional<NonDefaultConstructible> B(A);
82 EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
83 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
84 EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
85 NonDefaultConstructible::ResetCounts();
86 }
87 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
88 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
89 EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
90}
91
92TEST_F(OptionalTest, ConstructingCopyAssignmentTest) {
93 NonDefaultConstructible::ResetCounts();
94 {
95 Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
96 Optional<NonDefaultConstructible> B;
97 EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
98 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
99 EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
100 NonDefaultConstructible::ResetCounts();
101 B = A;
102 EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
103 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
104 EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
105 NonDefaultConstructible::ResetCounts();
106 }
107 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
108 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
109 EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
110}
111
112TEST_F(OptionalTest, CopyingCopyAssignmentTest) {
113 NonDefaultConstructible::ResetCounts();
114 {
115 Optional<NonDefaultConstructible> A(NonDefaultConstructible(3));
116 Optional<NonDefaultConstructible> B(NonDefaultConstructible(4));
117 EXPECT_EQ(2u, NonDefaultConstructible::CopyConstructions);
118 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
119 EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
120 NonDefaultConstructible::ResetCounts();
121 B = A;
122 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
123 EXPECT_EQ(1u, NonDefaultConstructible::CopyAssignments);
124 EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
125 NonDefaultConstructible::ResetCounts();
126 }
127 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
128 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
129 EXPECT_EQ(2u, NonDefaultConstructible::Destructions);
130}
131
132TEST_F(OptionalTest, DeletingCopyAssignmentTest) {
133 NonDefaultConstructible::ResetCounts();
134 {
135 Optional<NonDefaultConstructible> A;
136 Optional<NonDefaultConstructible> B(NonDefaultConstructible(3));
137 EXPECT_EQ(1u, NonDefaultConstructible::CopyConstructions);
138 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
139 EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
140 NonDefaultConstructible::ResetCounts();
141 B = A;
142 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
143 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
144 EXPECT_EQ(1u, NonDefaultConstructible::Destructions);
145 NonDefaultConstructible::ResetCounts();
146 }
147 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
148 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
149 EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
150}
151
152TEST_F(OptionalTest, NullCopyConstructionTest) {
153 NonDefaultConstructible::ResetCounts();
154 {
155 Optional<NonDefaultConstructible> A;
156 Optional<NonDefaultConstructible> B;
157 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
158 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
159 EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
160 NonDefaultConstructible::ResetCounts();
161 B = A;
162 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
163 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
164 EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
165 NonDefaultConstructible::ResetCounts();
166 }
167 EXPECT_EQ(0u, NonDefaultConstructible::CopyConstructions);
168 EXPECT_EQ(0u, NonDefaultConstructible::CopyAssignments);
169 EXPECT_EQ(0u, NonDefaultConstructible::Destructions);
170}
171
David Blaikie48574022013-02-21 07:58:45 +0000[diff] [blame]172#if LLVM_HAS_RVALUE_REFERENCES
173struct MoveOnly {
174 static unsigned MoveConstructions;
175 static unsigned Destructions;
176 static unsigned MoveAssignments;
177 int val;
178 explicit MoveOnly(int val) : val(val) {
179 }
180 MoveOnly(MoveOnly&& other) {
181 val = other.val;
182 ++MoveConstructions;
183 }
184 MoveOnly &operator=(MoveOnly&& other) {
185 val = other.val;
186 ++MoveAssignments;
187 return *this;
188 }
189 ~MoveOnly() {
190 ++Destructions;
191 }
192 static void ResetCounts() {
193 MoveConstructions = 0;
194 Destructions = 0;
195 MoveAssignments = 0;
196 }
197};
198
199unsigned MoveOnly::MoveConstructions = 0;
200unsigned MoveOnly::Destructions = 0;
201unsigned MoveOnly::MoveAssignments = 0;
202
David Blaikieea722552013-02-21 07:55:39 +0000[diff] [blame]203TEST_F(OptionalTest, MoveOnlyNull) {
204 MoveOnly::ResetCounts();
205 Optional<MoveOnly> O;
206 EXPECT_EQ(0u, MoveOnly::MoveConstructions);
207 EXPECT_EQ(0u, MoveOnly::MoveAssignments);
208 EXPECT_EQ(0u, MoveOnly::Destructions);
209}
210
211TEST_F(OptionalTest, MoveOnlyConstruction) {
212 MoveOnly::ResetCounts();
213 Optional<MoveOnly> O(MoveOnly(3));
214 EXPECT_TRUE((bool)O);
215 EXPECT_EQ(3, O->val);
216 EXPECT_EQ(1u, MoveOnly::MoveConstructions);
217 EXPECT_EQ(0u, MoveOnly::MoveAssignments);
218 EXPECT_EQ(1u, MoveOnly::Destructions);
219}
220
221TEST_F(OptionalTest, MoveOnlyMoveConstruction) {
222 Optional<MoveOnly> A(MoveOnly(3));
223 MoveOnly::ResetCounts();
224 Optional<MoveOnly> B(std::move(A));
225 EXPECT_FALSE((bool)A);
226 EXPECT_TRUE((bool)B);
227 EXPECT_EQ(3, B->val);
228 EXPECT_EQ(1u, MoveOnly::MoveConstructions);
229 EXPECT_EQ(0u, MoveOnly::MoveAssignments);
230 EXPECT_EQ(1u, MoveOnly::Destructions);
231}
232
233TEST_F(OptionalTest, MoveOnlyAssignment) {
234 MoveOnly::ResetCounts();
235 Optional<MoveOnly> O;
236 O = MoveOnly(3);
237 EXPECT_TRUE((bool)O);
238 EXPECT_EQ(3, O->val);
239 EXPECT_EQ(1u, MoveOnly::MoveConstructions);
240 EXPECT_EQ(0u, MoveOnly::MoveAssignments);
241 EXPECT_EQ(1u, MoveOnly::Destructions);
242}
243
244TEST_F(OptionalTest, MoveOnlyInitializingAssignment) {
245 Optional<MoveOnly> A(MoveOnly(3));
246 Optional<MoveOnly> B;
247 MoveOnly::ResetCounts();
248 B = std::move(A);
249 EXPECT_FALSE((bool)A);
250 EXPECT_TRUE((bool)B);
251 EXPECT_EQ(3, B->val);
252 EXPECT_EQ(1u, MoveOnly::MoveConstructions);
253 EXPECT_EQ(0u, MoveOnly::MoveAssignments);
254 EXPECT_EQ(1u, MoveOnly::Destructions);
255}
256
257TEST_F(OptionalTest, MoveOnlyNullingAssignment) {
258 Optional<MoveOnly> A;
259 Optional<MoveOnly> B(MoveOnly(3));
260 MoveOnly::ResetCounts();
261 B = std::move(A);
262 EXPECT_FALSE((bool)A);
263 EXPECT_FALSE((bool)B);
264 EXPECT_EQ(0u, MoveOnly::MoveConstructions);
265 EXPECT_EQ(0u, MoveOnly::MoveAssignments);
266 EXPECT_EQ(1u, MoveOnly::Destructions);
267}
268
269TEST_F(OptionalTest, MoveOnlyAssigningAssignment) {
270 Optional<MoveOnly> A(MoveOnly(3));
271 Optional<MoveOnly> B(MoveOnly(4));
272 MoveOnly::ResetCounts();
273 B = std::move(A);
274 EXPECT_FALSE((bool)A);
275 EXPECT_TRUE((bool)B);
276 EXPECT_EQ(3, B->val);
277 EXPECT_EQ(0u, MoveOnly::MoveConstructions);
278 EXPECT_EQ(1u, MoveOnly::MoveAssignments);
279 EXPECT_EQ(1u, MoveOnly::Destructions);
280}
David Blaikie48574022013-02-21 07:58:45 +0000[diff] [blame]281#endif
David Blaikieea722552013-02-21 07:55:39 +0000[diff] [blame]282
David Blaikiea28eda7e2013-02-20 00:26:04 +0000[diff] [blame]283} // end anonymous namespace
284