public void GetsInt16()
{
byte[] testData = new byte[] { 0xD8, 0xF0 };
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
Int16 result = accessor.GetInt16(0);
Assert.AreEqual(-10000, result);
}
public void GetsUInt16()
{
byte[] testData = new byte[] { 0xea, 0x60 };
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
UInt16 result = accessor.GetUInt16(0);
Assert.AreEqual(60000, result);
}
public void CompareBytesAtReturnsTrueWhenBytesMatch()
{
string testData = "Some test data for this unit test";
string match = "unit test";
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(Encoding.ASCII.GetBytes(testData));
Assert.IsTrue(accessor.CompareBytesAt(0x18, Encoding.ASCII.GetBytes(match)));
}
public void GetsInt32()
{
Int32 expectedResult = -2000000;
byte[] testData = new byte[] { 0xFF, 0xE1, 0x7B, 0x80 };
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
Int32 result = accessor.GetInt32(0);
Assert.AreEqual(expectedResult, result);
}
public async Task<BigEndianBinaryAccessor> LoadROMAsync()
{
using(FileStream fs = new FileStream(romPath, FileMode.Open, FileAccess.Read, FileShare.Read, 4096, true))
{
byte[] rom = new byte[fs.Length];
await fs.ReadAsync(rom, 0, rom.Length);
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(rom);
if (!validator.IsValidROM(accessor))
throw new ApplicationException("Invalid ROM format");
return accessor;
}
}
public bool IsValidROM(BigEndianBinaryAccessor accessor)
{
return (accessor.CompareBytesAt(0x100, Encoding.ASCII.GetBytes("SEGA GENESIS"))
|| accessor.CompareBytesAt(0x100, Encoding.ASCII.GetBytes("SEGA MEGADRIVE")));
}
public void GetsUInt32()
{
UInt32 expectedResult = 2147483647;
byte[] testData = new byte[] { 0x7F, 0xFF, 0xFF, 0xFF };
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
UInt32 result = accessor.GetUInt32(0);
Assert.AreEqual(expectedResult, result);
}
public void GetXIntXXThrowsIfOffsetIsInvalid()
{
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(new byte[] { 0xFF, 0xFE, 0xFD });
Int16 invalid = accessor.GetInt16(UInt16.MaxValue);
}
public void SetsInt32()
{
Int32 testValue = 68157953; // 0x04100201
byte[] testData = new byte[4];
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
accessor.SetValue(testValue, 0);
Assert.AreEqual(0x04, testData[0]);
Assert.AreEqual(0x10, testData[1]);
Assert.AreEqual(0x02, testData[2]);
Assert.AreEqual(0x01, testData[3]);
}
public void SetsInt16()
{
Int16 testValue = 16416; // 0x4020
byte[] testData = new byte[2];
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
accessor.SetValue(testValue, 0);
Assert.AreEqual(0x40, testData[0]);
Assert.AreEqual(0x20, testData[1]);
}
public void ConstructsWithByteArray()
{
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(Encoding.ASCII.GetBytes("Testing construction"));
Assert.IsNotNull(accessor);
}
public void SetsUint16()
{
UInt16 testValue = 0x846A;
byte[] testData = new byte[2];
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
accessor.SetValue(testValue, 0);
Assert.AreEqual(0x84, testData[0]);
Assert.AreEqual(0x6A, testData[1]);
}
public void CompareBytesThrowsArgumentExceptionIfInvalidOffsetGiven()
{
string testData = "Some test data for this unit test";
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(Encoding.ASCII.GetBytes(testData));
Assert.IsFalse(accessor.CompareBytesAt(0xFFFF, Encoding.ASCII.GetBytes("test")));
}
public void SetAndGetUsingAccessor()
{
Int32 testValue = 268575300; // 0x10022244
byte[] testData = new byte[10];
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
accessor.SetValue(testValue, 4);
Int32 readValue = accessor.GetInt32(4);
Assert.AreEqual(testValue, readValue);
}
public void ThrowsWhenConstructedWithNull()
{
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(null);
}
public void SetValueThrowsIfOffsetIsInvalid()
{
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(new byte[] { 0xFF, 0xFE, 0xFD });
accessor.SetValue(0xFF, 10);
}
public void SetsUint32()
{
UInt32 testValue = 0xFFDFF63C; //-2099652
byte[] testData = new byte[4];
BigEndianBinaryAccessor accessor = new BigEndianBinaryAccessor(testData);
accessor.SetValue(testValue, 0);
Assert.AreEqual(0xFF, testData[0]);
Assert.AreEqual(0xDF, testData[1]);
Assert.AreEqual(0xF6, testData[2]);
Assert.AreEqual(0x3C, testData[3]);
}
