public void SecureZeroMemory_IntPtrLength()
{
// Arrange
long x = 0x0123456789ABCDEF;
// Act
UnsafeBufferUtil.SecureZeroMemory((byte *)&x, length: (IntPtr)sizeof(long));
// Assert
Assert.Equal(0, x);
}
public void SecureZeroMemory_ULongLength()
{
// Arrange
long x = 0x0123456789ABCDEF;
// Act
UnsafeBufferUtil.SecureZeroMemory((byte *)&x, byteCount: (ulong)sizeof(long));
// Assert
Assert.Equal(0, x);
}
public void BlockCopy_PtrToPtr_UIntLength()
{
// Arrange
long x = 0x0123456789ABCDEF;
long y = 0;
// Act
UnsafeBufferUtil.BlockCopy(from: &x, to: &y, byteCount: (uint)sizeof(long));
// Assert
Assert.Equal(x, y);
}
public void BlockCopy_PtrToHandle()
{
// Arrange
const string expected = "Hello there!";
int cbExpected = expected.Length * sizeof(char);
var testHandle = LocalAlloc(cbExpected);
// Act
fixed(char *pExpected = expected)
{
UnsafeBufferUtil.BlockCopy(from: pExpected, to: testHandle, byteCount: (uint)cbExpected);
}
// Assert
string actual = new string((char *)testHandle.DangerousGetHandle(), 0, expected.Length);
GC.KeepAlive(testHandle);
Assert.Equal(expected, actual);
}
public void BlockCopy_HandleToPtr()
{
// Arrange
const string expected = "Hello there!";
int cbExpected = expected.Length * sizeof(char);
var controlHandle = LocalAlloc(cbExpected);
for (int i = 0; i < expected.Length; i++)
{
((char *)controlHandle.DangerousGetHandle())[i] = expected[i];
}
char *dest = stackalloc char[expected.Length];
// Act
UnsafeBufferUtil.BlockCopy(from: controlHandle, to: dest, byteCount: (uint)cbExpected);
// Assert
string actual = new string(dest, 0, expected.Length);
Assert.Equal(expected, actual);
}
public void BlockCopy_HandleToHandle()
{
// Arrange
const string expected = "Hello there!";
int cbExpected = expected.Length * sizeof(char);
var controlHandle = LocalAlloc(cbExpected);
for (int i = 0; i < expected.Length; i++)
{
((char *)controlHandle.DangerousGetHandle())[i] = expected[i];
}
var testHandle = LocalAlloc(cbExpected);
// Act
UnsafeBufferUtil.BlockCopy(from: controlHandle, to: testHandle, length: (IntPtr)cbExpected);
// Assert
string actual = new string((char *)testHandle.DangerousGetHandle(), 0, expected.Length);
GC.KeepAlive(testHandle);
Assert.Equal(expected, actual);
}