PKHeX/Tests/PKHeX.Core.Tests/Util/FlagUtilTests.cs
Kurt 47071b41f3
Refactoring: Span-based value writes and method signatures (#3361)
Existing `get`/`set` logic is flawed in that it doesn't work on Big Endian operating systems, and it allocates heap objects when it doesn't need to.

`System.Buffers.Binary.BinaryPrimitives` in the `System.Memory` NuGet package provides both Little Endian and Big Endian methods to read and write data; all the `get`/`set` operations have been reworked to use this new API. This removes the need for PKHeX's manual `BigEndian` class, as all functions are already covered by the BinaryPrimitives API.

The `StringConverter` has now been rewritten to accept a Span to read from & write to, no longer requiring a temporary StringBuilder.

Other Fixes included:
- The Super Training UI for Gen6 has been reworked according to the latest block structure additions.
- Cloning a Stadium2 Save File now works correctly (opening from the Folder browser list).
- Checksum & Sanity properties removed from parent PKM class, and is now implemented via interface.
2022-01-02 21:35:59 -08:00

46 lines
1.4 KiB
C#

using System;
using FluentAssertions;
using PKHeX.Core;
using Xunit;
using static System.Buffers.Binary.BinaryPrimitives;
namespace PKHeX.Tests.Util;
public class FlagUtilTests
{
[Theory]
[InlineData(1, 0, 0)]
[InlineData(2, 0, 1)]
[InlineData(0x8000_0000, 3, 7)]
public void GetSetFlag(uint raw, int byteIndex, int bitIndex)
{
Span<byte> data = stackalloc byte[4];
WriteUInt32LittleEndian(data, raw);
var value = FlagUtil.GetFlag(data, byteIndex, bitIndex);
value.Should().Be(true);
Span<byte> copy = stackalloc byte[data.Length];
FlagUtil.SetFlag(copy, byteIndex, bitIndex, true);
data.SequenceEqual(copy).Should().BeTrue();
}
[Theory]
[InlineData(0x7FFF_FFFE, 0, 0)]
public void ClearFlag(uint raw, int byteIndex, int bitIndex)
{
Span<byte> data = stackalloc byte[4];
WriteUInt32LittleEndian(data, raw);
var value = FlagUtil.GetFlag(data, byteIndex, bitIndex);
value.Should().Be(false);
// does nothing on empty
Span<byte> copy = stackalloc byte[data.Length];
FlagUtil.SetFlag(copy, byteIndex, bitIndex, false);
copy.Count((byte)0).Should().Be(copy.Length);
// doesn't clear any other flag
data.CopyTo(copy);
FlagUtil.SetFlag(copy, byteIndex, bitIndex, false);
data.SequenceEqual(copy).Should().BeTrue();
}
}