1 // Copyright 2024 The Pigweed Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 // https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14
15 #include "pw_allocator/buffer.h"
16
17 #include <array>
18 #include <cstdint>
19
20 #include "lib/stdcompat/bit.h"
21 #include "pw_bytes/span.h"
22 #include "pw_unit_test/framework.h"
23
24 namespace {
25
26 using pw::allocator::WithBuffer;
27
TEST(WithBuffer,AlignedBytesAreAvailable)28 TEST(WithBuffer, AlignedBytesAreAvailable) {
29 static constexpr size_t kBufferSize = 47;
30 static constexpr size_t kAlignment = 32;
31 WithBuffer<int, kBufferSize, kAlignment> int_with_buffer;
32 EXPECT_EQ(int_with_buffer.size(), kBufferSize);
33 EXPECT_EQ(int_with_buffer.as_bytes().size(), kBufferSize);
34 auto buffer_data_ptr =
35 cpp20::bit_cast<uintptr_t>(int_with_buffer.as_bytes().data());
36 EXPECT_EQ(buffer_data_ptr % kAlignment, 0u);
37 }
38
39 } // namespace
40