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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "testing/gtest/include/gtest/gtest.h" | |
6 | |
7 #include "base/mac/mac_util.h" | |
8 #include "content/browser/mac/closure_blocks_leopard_compat.h" | |
9 | |
10 // Used in ClosureBlocksLeopardCompatTest.Global. Putting a block at global | |
11 // scope results in a block structure whose isa field is set to | |
12 // NSConcreteGlobalBlock, ensuring that symbol is referenced. This test needs | |
13 // to be able to load on 10.5 where that symbol is not present at runtime, so | |
14 // the real test here is that the symbol is weakly imported. If not, the | |
15 // executable will fail to load. | |
16 void (^global_block)(bool*) = ^(bool* ran_pointer) { *ran_pointer = true; }; | |
17 | |
18 namespace { | |
19 | |
20 // It should be possible to declare a block on OSes as early as Leopard | |
21 // (10.5). This should be buildable with the 10.5 SDK and a 10.5 deployment | |
22 // target, and runnable on 10.5. However, the block itself is not expected to | |
23 // be runnable on 10.5. This test verfies that blocks are buildable on 10.5 | |
24 // and runnable on Snow Leopard (10.6) and later. | |
25 | |
26 TEST(ClosureBlocksLeopardCompatTest, Stack) { | |
27 bool ran = false; | |
28 | |
29 // This should result in a block structure whose isa field is set to | |
30 // NSConcreteStackBlock, ensuring that symbol is referenced. This test | |
31 // needs to be able to load on 10.5 where that symbol is not present at | |
32 // runtime, so the real test here checks that the symbol is weakly imported. | |
33 // If not, the executable will fail to load. | |
34 | |
35 void (^test_block)(bool*) = ^(bool* ran_pointer) { *ran_pointer = true; }; | |
36 | |
37 ASSERT_FALSE(ran); | |
38 | |
39 if (base::mac::IsOSSnowLeopardOrLater()) { | |
40 test_block(&ran); | |
41 | |
42 EXPECT_TRUE(ran); | |
43 } | |
44 } | |
45 | |
46 TEST(ClosureBlocksLeopardCompatTest, Global) { | |
47 bool ran = false; | |
48 | |
49 ASSERT_FALSE(ran); | |
50 | |
51 if (base::mac::IsOSSnowLeopardOrLater()) { | |
52 global_block(&ran); | |
53 | |
54 EXPECT_TRUE(ran); | |
55 } | |
56 } | |
57 | |
58 TEST(ClosureBlocksLeopardCompatTest, CopyRelease) { | |
59 if (base::mac::IsOSSnowLeopardOrLater()) { | |
60 // Protect the entire test in this conditional, because __block won't run | |
61 // on 10.5. | |
62 __block int value = 0; | |
63 | |
64 typedef int (^TestBlockType)(); | |
65 TestBlockType local_block = ^(void) { return ++value; }; | |
66 | |
67 ASSERT_EQ(0, value); | |
68 | |
69 int rv = local_block(); | |
70 EXPECT_EQ(1, rv); | |
71 EXPECT_EQ(rv, value); | |
72 | |
73 // Using Block_copy, Block_release, and these other operations ensures | |
74 // that _Block_copy, _Block_release, _Block_object_assign, and | |
75 // _Block_object_dispose are referenced. This test needs to be able to | |
76 // load on 10.5 where these symbols are not present at runtime, so the | |
77 // real test here is that the symbol is weakly imported. If not, the | |
78 // executable will fail to load. | |
79 | |
80 TestBlockType copied_block = Block_copy(local_block); | |
81 | |
82 rv = copied_block(); | |
83 EXPECT_EQ(2, rv); | |
84 EXPECT_EQ(rv, value); | |
85 | |
86 rv = copied_block(); | |
87 EXPECT_EQ(3, rv); | |
88 EXPECT_EQ(rv, value); | |
89 | |
90 Block_release(copied_block); | |
91 | |
92 rv = local_block(); | |
93 EXPECT_EQ(4, rv); | |
94 EXPECT_EQ(rv, value); | |
95 } | |
96 } | |
97 | |
98 } // namespace | |
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