void SetupRandPartA()
{
if (i2 <= last)
{
chPrev = ch2;
ch2 = ll8[tPos];
tPos = tt[tPos];
if (rNToGo == 0)
{
rNToGo = BZip2Constants.RandomNumbers[rTPos];
rTPos++;
if (rTPos == 512)
{
rTPos = 0;
}
}
rNToGo--;
ch2 ^= (rNToGo == 1) ? 1 : 0;
i2++;
currentChar = ch2;
currentState = State.RandPartB;
mCrc.Update(ch2);
}
else
{
EndBlock();
InitBlock();
SetupBlock();
}
}
void exceptionTesting(IZipChecksum crcUnderTest)
{
var exception = false;
try
{
crcUnderTest.Update(null);
}
catch (ArgumentNullException)
{
exception = true;
}
Assert.IsTrue(exception, "Passing a null buffer should cause an ArgumentNullException");
// reset exception
exception = false;
try
{
crcUnderTest.Update(new ArraySegment <byte>(null, 0, 0).Array);
}
catch (ArgumentNullException)
{
exception = true;
}
Assert.IsTrue(exception, "Passing a null buffer should cause an ArgumentNullException");
// reset exception
exception = false;
try
{
crcUnderTest.Update(new ArraySegment <byte>(check, -1, 9).Array);
}
catch (ArgumentOutOfRangeException)
{
exception = true;
}
Assert.IsTrue(exception, "Passing a negative offset should cause an ArgumentOutOfRangeException");
// reset exception
exception = false;
try
{
crcUnderTest.Update(new ArraySegment <byte>(check, 10, 0).Array);
}
catch (ArgumentException)
{
exception = true;
}
Assert.IsTrue(exception, "Passing an offset greater than buffer.Length should cause an ArgumentException");
// reset exception
exception = false;
try
{
crcUnderTest.Update(new ArraySegment <byte>(check, 0, -1).Array);
}
catch (ArgumentOutOfRangeException)
{
exception = true;
}
Assert.IsTrue(exception, "Passing a negative count should cause an ArgumentOutOfRangeException");
// reset exception
exception = false;
try
{
crcUnderTest.Update(new ArraySegment <byte>(check, 0, 10).Array);
}
catch (ArgumentException)
{
exception = true;
}
Assert.IsTrue(exception, "Passing a count + offset greater than buffer.Length should cause an ArgumentException");
}
