| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <mojo/bindings/buffer.h> |
| |
| #include <stdint.h> |
| |
| #include "gtest/gtest.h" |
| |
| namespace { |
| |
| TEST(MojomBufferTest, RoundTo8) { |
| char buffer[100]; |
| struct MojomBuffer mbuf = { |
| buffer, sizeof(buffer), |
| 0, // num_bytes_used |
| }; |
| |
| // This should actually allocate 8 bytes: |
| EXPECT_EQ(buffer, MojomBuffer_Allocate(&mbuf, 6)); |
| EXPECT_EQ(8ul, mbuf.num_bytes_used); |
| // The start of the next buffer is buffer + 8 bytes: |
| EXPECT_EQ(buffer + 8, MojomBuffer_Allocate(&mbuf, 6)); |
| EXPECT_EQ(16ul, mbuf.num_bytes_used); |
| // 8-bye allocation results in 8-byte allocation. |
| EXPECT_EQ(buffer + 16, MojomBuffer_Allocate(&mbuf, 8)); |
| EXPECT_EQ(24ul, mbuf.num_bytes_used); |
| // Allocate 0 bytes. |
| EXPECT_EQ(buffer + 24ul, MojomBuffer_Allocate(&mbuf, 0)); |
| EXPECT_EQ(24ul, mbuf.num_bytes_used); |
| } |
| |
| TEST(MojomBufferTest, Failure) { |
| char buffer[100]; |
| struct MojomBuffer mbuf = { |
| buffer, sizeof(buffer), |
| 0, // num_bytes_used |
| }; |
| |
| // Allocate too much space. |
| EXPECT_EQ(NULL, MojomBuffer_Allocate(&mbuf, sizeof(buffer) + 10)); |
| |
| // Setup the buffer data so that it will overflow. |
| mbuf.num_bytes_used = UINT32_MAX - 7; // This divides by 8. |
| mbuf.buf_size = UINT32_MAX; |
| |
| // Rounds to 8, and allocates more than it has: |
| EXPECT_EQ(NULL, MojomBuffer_Allocate(&mbuf, 1)); |
| } |
| |
| } // namespace |