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using System;
using FluentAssertions;
using Xunit;
namespace NetCode.UnitTests.Diff;
public class BitReaderTests
{
[Fact]
public void ReadInt_ReaderContainsSingle0Bit_UpdatedValueShouldBeTheSameAsBaseline()
{
var bitReader = new BitReader(new byte[] {0b_0});
var updated = bitReader.ReadInt(10);
updated.Should().Be(10);
}
[Fact]
public void ReadInt_ReaderContains1BitAndUpdatedValue_UpdatedValueShouldBeRead()
{
var bitReader = new BitReader(new byte[] { 0b_00010101, 0b_00000000, 0b_00000000, 0b_00000000, 0b_00000000 });
var updated = bitReader.ReadInt(0b_111);
updated.Should().Be(0b_1010);
}
[Fact]
public void ReadUInt_ReaderContainsSingle0Bit_UpdatedValueShouldBeTheSameAsBaseline()
{
var bitReader = new BitReader(new byte[] {0b_0});
var updated = bitReader.ReadUInt(10);
updated.Should().Be(10);
}
[Fact]
public void ReadUInt_ReaderContains1BitAndUpdatedValue_UpdatedValueShouldBeRead()
{
var bitReader = new BitReader(new byte[] { 0b_00010101, 0b_00000000, 0b_00000000, 0b_00000000, 0b_00000000 });
var updated = bitReader.ReadUInt(0b_111);
updated.Should().Be(0b_1010);
}
[Fact]
public void ReadFloat_ReaderContainsSingle0Bit_UpdatedValueShouldBeTheSameAsBaseline()
{
var bitReader = new BitReader(new byte[] {0b_0});
var updated = bitReader.ReadFloat(10f);
updated.Should().Be(10f);
}
[Fact]
public void ReadFloat_ReaderContains1BitAndUpdatedValue_UpdatedValueShouldBeRead()
{
var bitReader = new BitReader(new byte[] { 0b_10101011, 0b_10011000, 0b_11100001, 0b_01010101, 0b_00000001});
var updated = bitReader.ReadFloat(123f);
updated.Should().Be(BitConverter.UInt32BitsToSingle(0b_10101010_11110000_11001100_01010101));
}
[Fact]
public void ReadString_ReaderContainsSingle0Bit_UpdatedValueShouldBeTheSameAsBaseline()
{
var bitReader = new BitReader(new byte[] {0b_0});
var updated = bitReader.ReadString("abc");
updated.Should().Be("abc");
}
[Fact]
public void ReadString_ReaderContains1BitAndUpdatedValue_UpdatedValueShouldBeRead()
{
var bitReader = new BitReader(new byte[] { 0b_00001101, 0b_11000010, 0b_11000100, 0b_11000110, 0b_0});
var updated = bitReader.ReadString("abb");
updated.Should().Be("abc");
}
}