blob: b0b72d8b5808a4a3652aff4b76e6c7e2ebb7452f [file] [log] [blame]
// Copyright 2024 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "src/tint/utils/bytes/buffer_reader.h"
#include "gtest/gtest.h"
namespace tint::bytes {
namespace {
template <typename... ARGS>
auto Data(ARGS... args) {
return std::array{std::byte{static_cast<uint8_t>(args)}...};
}
TEST(BufferReaderTest, IntegerBigEndian) {
auto data = Data(0x10, 0x20, 0x30, 0x40);
BufferReader u32_reader{Slice{data}};
EXPECT_FALSE(u32_reader.IsEOF());
auto u32 = u32_reader.Int<uint32_t>(Endianness::kBig);
EXPECT_EQ(u32, 0x10203040u);
EXPECT_TRUE(u32_reader.IsEOF());
BufferReader i32_reader{Slice{data}};
EXPECT_FALSE(i32_reader.IsEOF());
auto i32 = i32_reader.Int<int32_t>(Endianness::kBig);
EXPECT_EQ(i32, 0x10203040);
EXPECT_TRUE(i32_reader.IsEOF());
}
TEST(BufferReaderTest, IntegerBigEndian_TooShort) {
auto data = Data(0x10, 0x20);
BufferReader u32_reader{Slice{data}};
EXPECT_FALSE(u32_reader.IsEOF());
auto u32 = u32_reader.Int<uint32_t>(Endianness::kBig);
EXPECT_NE(u32, Success);
EXPECT_TRUE(u32_reader.IsEOF());
BufferReader i32_reader{Slice{data}};
EXPECT_FALSE(i32_reader.IsEOF());
auto i32 = i32_reader.Int<int32_t>(Endianness::kBig);
EXPECT_NE(i32, Success);
EXPECT_TRUE(i32_reader.IsEOF());
}
TEST(BufferReaderTest, IntegerLittleEndian) {
auto data = Data(0x10, 0x20, 0x30, 0x40);
BufferReader u32_reader{Slice{data}};
EXPECT_FALSE(u32_reader.IsEOF());
auto u32 = u32_reader.Int<uint32_t>(Endianness::kLittle);
EXPECT_EQ(u32, 0x40302010u);
EXPECT_TRUE(u32_reader.IsEOF());
BufferReader i32_reader{Slice{data}};
EXPECT_FALSE(i32_reader.IsEOF());
auto i32 = i32_reader.Int<int32_t>(Endianness::kLittle);
EXPECT_EQ(i32, 0x40302010);
EXPECT_TRUE(i32_reader.IsEOF());
}
TEST(BufferReaderTest, IntegerLittleEndian_TooShort) {
auto data = Data(0x30, 0x40);
BufferReader u32_reader{Slice{data}};
EXPECT_FALSE(u32_reader.IsEOF());
auto u32 = u32_reader.Int<uint32_t>(Endianness::kLittle);
EXPECT_NE(u32, Success);
EXPECT_TRUE(u32_reader.IsEOF());
BufferReader i32_reader{Slice{data}};
EXPECT_FALSE(i32_reader.IsEOF());
auto i32 = i32_reader.Int<int32_t>(Endianness::kLittle);
EXPECT_NE(i32, Success);
EXPECT_TRUE(i32_reader.IsEOF());
}
TEST(BufferReaderTest, Float) {
auto data = Data(0x00, 0x00, 0x08, 0x41);
BufferReader f32_reader{Slice{data}};
EXPECT_FALSE(f32_reader.IsEOF());
auto f32 = f32_reader.Float<float>();
ASSERT_EQ(f32, Success);
EXPECT_EQ(f32.Get(), 8.5f);
EXPECT_TRUE(f32_reader.IsEOF());
}
TEST(BufferReaderTest, Float_TooShort) {
auto data = Data(0x08, 0x41);
BufferReader f32_reader{Slice{data}};
EXPECT_FALSE(f32_reader.IsEOF());
auto f32 = f32_reader.Float<float>();
EXPECT_NE(f32, Success);
EXPECT_TRUE(f32_reader.IsEOF());
}
} // namespace
} // namespace tint::bytes