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1 // Copyright 2016 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 <mojo/bindings/buffer.h> | |
6 | |
7 #include <stdint.h> | |
8 | |
9 #include "testing/gtest/include/gtest/gtest.h" | |
10 | |
11 namespace { | |
12 | |
13 TEST(MojomBufferTest, RoundTo8) { | |
14 char buffer[100]; | |
15 struct MojomBuffer mbuf = { | |
16 buffer, sizeof(buffer), | |
17 0, // num_bytes_used | |
18 }; | |
19 | |
20 // This should actually allocate 8 bytes: | |
21 EXPECT_EQ(buffer, MojomBuffer_Allocate(&mbuf, 6)); | |
22 EXPECT_EQ(8ul, mbuf.num_bytes_used); | |
23 // The start of the next buffer is buffer + 8 bytes: | |
24 EXPECT_EQ(buffer + 8, MojomBuffer_Allocate(&mbuf, 6)); | |
25 EXPECT_EQ(16ul, mbuf.num_bytes_used); | |
26 // 8-bye allocation results in 8-byte allocation. | |
27 EXPECT_EQ(buffer + 16, MojomBuffer_Allocate(&mbuf, 8)); | |
28 EXPECT_EQ(24ul, mbuf.num_bytes_used); | |
29 // Allocate 0 bytes. | |
30 EXPECT_EQ(buffer + 24ul, MojomBuffer_Allocate(&mbuf, 0)); | |
31 EXPECT_EQ(24ul, mbuf.num_bytes_used); | |
32 } | |
33 | |
34 TEST(MojomBufferTest, Failure) { | |
35 char buffer[100]; | |
36 struct MojomBuffer mbuf = { | |
37 buffer, sizeof(buffer), | |
38 0, // num_bytes_used | |
39 }; | |
40 | |
41 // Allocate too much space. | |
42 EXPECT_EQ(NULL, MojomBuffer_Allocate(&mbuf, sizeof(buffer) + 10)); | |
43 | |
44 // Setup the buffer data so that it will overflow. | |
45 mbuf.num_bytes_used = UINT32_MAX - 7; // This divides by 8. | |
46 mbuf.buf_size = UINT32_MAX; | |
47 | |
48 // Rounds to 8, and allocates more than it has: | |
49 EXPECT_EQ(NULL, MojomBuffer_Allocate(&mbuf, 1)); | |
50 } | |
51 | |
52 } // namespace | |
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