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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/basictypes.h" | 5 #include "base/basictypes.h" |
6 #include "base/memory/scoped_ptr.h" | 6 #include "base/memory/scoped_ptr.h" |
7 #include "testing/gtest/include/gtest/gtest.h" | 7 #include "testing/gtest/include/gtest/gtest.h" |
8 | 8 |
9 namespace { | 9 namespace { |
10 | 10 |
11 class ConDecLogger { | 11 class ConDecLogger { |
12 public: | 12 public: |
13 ConDecLogger() : ptr_(NULL) { } | 13 ConDecLogger() : ptr_(NULL) { } |
14 explicit ConDecLogger(int* ptr) { set_ptr(ptr); } | 14 explicit ConDecLogger(int* ptr) { set_ptr(ptr); } |
15 ~ConDecLogger() { --*ptr_; } | 15 ~ConDecLogger() { --*ptr_; } |
16 | 16 |
17 void set_ptr(int* ptr) { ptr_ = ptr; ++*ptr_; } | 17 void set_ptr(int* ptr) { ptr_ = ptr; ++*ptr_; } |
18 | 18 |
19 int SomeMeth(int x) { return x; } | 19 int SomeMeth(int x) { return x; } |
20 | 20 |
21 private: | 21 private: |
22 int* ptr_; | 22 int* ptr_; |
23 DISALLOW_COPY_AND_ASSIGN(ConDecLogger); | 23 DISALLOW_COPY_AND_ASSIGN(ConDecLogger); |
24 }; | 24 }; |
25 | 25 |
26 scoped_ptr<ConDecLogger> PassThru(scoped_ptr<ConDecLogger> logger) { | |
27 return logger.Pass(); | |
28 } | |
29 | |
30 void GrabAndDrop(scoped_ptr<ConDecLogger> logger) { | |
31 } | |
32 | |
33 // Do not delete this function! It's existence is to test that you can | |
34 // return a temporarily constructed version of the scoper. | |
35 scoped_ptr<ConDecLogger> TestReturnOfType(int* constructed) { | |
36 return scoped_ptr<ConDecLogger>(new ConDecLogger(constructed)); | |
37 } | |
38 | |
39 } // namespace | 26 } // namespace |
40 | 27 |
41 TEST(ScopedPtrTest, ScopedPtr) { | 28 TEST(ScopedPtrTest, ScopedPtr) { |
42 int constructed = 0; | 29 int constructed = 0; |
43 | 30 |
44 { | 31 { |
45 scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed)); | 32 scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed)); |
46 EXPECT_EQ(1, constructed); | 33 EXPECT_EQ(1, constructed); |
47 EXPECT_TRUE(scoper.get()); | 34 EXPECT_TRUE(scoper.get()); |
48 | 35 |
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172 | 159 |
173 scoper2.swap(scoper1); | 160 scoper2.swap(scoper1); |
174 EXPECT_EQ(loggers, scoper2.get()); | 161 EXPECT_EQ(loggers, scoper2.get()); |
175 EXPECT_FALSE(scoper1.get()); | 162 EXPECT_FALSE(scoper1.get()); |
176 EXPECT_FALSE(scoper1 == scoper2.get()); | 163 EXPECT_FALSE(scoper1 == scoper2.get()); |
177 EXPECT_TRUE(scoper1 != scoper2.get()); | 164 EXPECT_TRUE(scoper1 != scoper2.get()); |
178 } | 165 } |
179 EXPECT_EQ(0, constructed); | 166 EXPECT_EQ(0, constructed); |
180 } | 167 } |
181 | 168 |
182 TEST(ScopedPtrTest, PassBehavior) { | |
183 int constructed = 0; | |
184 { | |
185 ConDecLogger* logger = new ConDecLogger(&constructed); | |
186 scoped_ptr<ConDecLogger> scoper(logger); | |
187 EXPECT_EQ(1, constructed); | |
188 | |
189 // Test Pass() with constructor; | |
190 scoped_ptr<ConDecLogger> scoper2(scoper.Pass()); | |
191 EXPECT_EQ(1, constructed); | |
192 | |
193 // Test Pass() with assignment; | |
194 scoped_ptr<ConDecLogger> scoper3; | |
195 scoper3 = scoper2.Pass(); | |
196 EXPECT_EQ(1, constructed); | |
197 EXPECT_FALSE(scoper.get()); | |
198 EXPECT_FALSE(scoper2.get()); | |
199 EXPECT_TRUE(scoper3.get()); | |
200 } | |
201 | |
202 // Test uncaught Pass() does not leak. | |
203 { | |
204 ConDecLogger* logger = new ConDecLogger(&constructed); | |
205 scoped_ptr<ConDecLogger> scoper(logger); | |
206 EXPECT_EQ(1, constructed); | |
207 | |
208 // Should auto-destruct logger by end of scope. | |
209 scoper.Pass(); | |
210 EXPECT_FALSE(scoper.get()); | |
211 } | |
212 EXPECT_EQ(0, constructed); | |
213 | |
214 // Test that passing to function which does nothing does not leak. | |
215 { | |
216 ConDecLogger* logger = new ConDecLogger(&constructed); | |
217 scoped_ptr<ConDecLogger> scoper(logger); | |
218 EXPECT_EQ(1, constructed); | |
219 | |
220 // Should auto-destruct logger by end of scope. | |
221 GrabAndDrop(scoper.Pass()); | |
222 EXPECT_FALSE(scoper.get()); | |
223 } | |
224 EXPECT_EQ(0, constructed); | |
225 } | |
226 | |
227 TEST(ScopedPtrTest, ReturnTypeBehavior) { | |
228 int constructed = 0; | |
229 | |
230 // Test that we can return a scoped_ptr. | |
231 { | |
232 ConDecLogger* logger = new ConDecLogger(&constructed); | |
233 scoped_ptr<ConDecLogger> scoper(logger); | |
234 EXPECT_EQ(1, constructed); | |
235 | |
236 PassThru(scoper.Pass()); | |
237 EXPECT_FALSE(scoper.get()); | |
238 } | |
239 EXPECT_EQ(0, constructed); | |
240 | |
241 // Test uncaught return type not leak. | |
242 { | |
243 ConDecLogger* logger = new ConDecLogger(&constructed); | |
244 scoped_ptr<ConDecLogger> scoper(logger); | |
245 EXPECT_EQ(1, constructed); | |
246 | |
247 // Should auto-destruct logger by end of scope. | |
248 PassThru(scoper.Pass()); | |
249 EXPECT_FALSE(scoper.get()); | |
250 } | |
251 EXPECT_EQ(0, constructed); | |
252 | |
253 // Call TestReturnOfType() so the compiler doesn't warn for an unused | |
254 // function. | |
255 { | |
256 TestReturnOfType(&constructed); | |
257 } | |
258 EXPECT_EQ(0, constructed); | |
259 } | |
260 | |
261 // TODO scoped_ptr_malloc | 169 // TODO scoped_ptr_malloc |
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