public void Write_Call_Properly_Estimates_The_Count(int buffSize)
{
using (var mem = new MemoryStream())
{
using (var instance = new ByteCountStream(mem, true))
{
var buffer = new byte[buffSize];
for (var i = 0; i < buffSize; i++)
{
buffer[i] = 5;
}
instance.Write(buffer, 0, buffSize);
Assert.True(instance.ByteCount == mem.Length);
using (var mem1 = new MemoryStream())
{
instance.ResetWith(mem1, true);
buffer = new byte[buffSize];
for (var i = 0; i < buffSize; i++)
{
buffer[i] = 5;
}
instance.Write(buffer, 0, buffSize);
Assert.True(instance.ByteCount == mem.Length);
}
}
}
}
public void Write_Call_Properly_Checks_The_Constraints_When_Stream_Is_Null(byte[] nullBuff)
{
using (var instance = new ByteCountStream())
{
//null buff
var err = Assert.Throws <DdnDfException>(() => instance.Write(nullBuff, 0, 0));
Assert.NotNull(err);
Assert.True(err.ErrorCode == DdnDfErrorCode.NullObject);
// -ve offset
err = Assert.Throws <DdnDfException>(() => instance.Write(new byte[0], -1, 0));
Assert.NotNull(err);
Assert.True(err.ErrorCode == DdnDfErrorCode.ValueLessThanThreshold);
// -ve count
err = Assert.Throws <DdnDfException>(() => instance.Write(new byte[0], 0, -1));
Assert.NotNull(err);
Assert.True(err.ErrorCode == DdnDfErrorCode.ValueLessThanThreshold);
// buff length < offset + count
err = Assert.Throws <DdnDfException>(() => instance.Write(new byte[0], 0, 1));
Assert.NotNull(err);
Assert.True(err.ErrorCode == DdnDfErrorCode.ValueLessThanThreshold);
//this would pass
instance.Write(new byte[0], 0, 0);
}
}