public static void ReadWrite()
{
var length = 1000;
using (var manager = new UmsManager(FileAccess.ReadWrite, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
Assert.Equal(stream.Length, length);
var bytes = ArrayHelpers.CreateByteArray(length);
var copy = bytes.Copy();
stream.Write(copy, 0, length);
var memory = manager.ToArray();
Assert.True(ArrayHelpers.Comparer <byte>().Equals(bytes, memory));
stream.Seek(0, SeekOrigin.Begin);
byte[] read = UmsReadTests.ReadAllBytes(stream);
Assert.Equal(stream.Position, read.Length);
byte[] current = manager.ToArray();
Assert.True(ArrayHelpers.Comparer <byte>().Equals(read, current));
Assert.True(ArrayHelpers.Comparer <byte>().Equals(read, bytes));
stream.Write(new byte[0], 0, 0);
}
}
public static void ReadWriteByte()
{
var length = 1000;
using (var manager = new UmsManager(FileAccess.ReadWrite, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
var bytes = ArrayHelpers.CreateByteArray(length);
for (int index = 0; index < bytes.Length; index++)
{
byte byteToWrite = bytes[index];
stream.WriteByte(byteToWrite);
stream.Position--;
int read = stream.ReadByte();
Assert.Equal((byte)read, byteToWrite);
}
var memory = manager.ToArray();
Assert.True(ArrayHelpers.Comparer <byte>().Equals(bytes, memory));
}
}
public static void CannotUseStreamAfterDispose()
{
using (var manager = new UmsManager(FileAccess.ReadWrite, 1000))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
stream.Dispose();
Assert.False(stream.CanRead);
Assert.False(stream.CanWrite);
Assert.False(stream.CanSeek);
Assert.Throws <ObjectDisposedException>(() => { long x = stream.Capacity; });
Assert.Throws <ObjectDisposedException>(() => { long y = stream.Length; });
Assert.Throws <ObjectDisposedException>(() => { stream.SetLength(2); });
Assert.Throws <ObjectDisposedException>(() => { long z = stream.Position; });
Assert.Throws <ObjectDisposedException>(() => { stream.Position = 2; });
Assert.Throws <ObjectDisposedException>(() => stream.Seek(0, SeekOrigin.Begin));
Assert.Throws <ObjectDisposedException>(() => stream.Seek(0, SeekOrigin.Current));
Assert.Throws <ObjectDisposedException>(() => stream.Seek(0, SeekOrigin.End));
byte[] buffer = ArrayHelpers.CreateByteArray(10);
Assert.Throws <ObjectDisposedException>(() => stream.Read(buffer, 0, buffer.Length));
Assert.Throws <ObjectDisposedException>(() => stream.ReadByte());
Assert.Throws <ObjectDisposedException>(() => stream.WriteByte(0));
Assert.Throws <ObjectDisposedException>(() => stream.Write(buffer, 0, buffer.Length));
}
}
public void ReadWrite()
{
const int length = 1000;
using (var manager = new UmsManager(FileAccess.ReadWrite, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
Assert.Equal(stream.Length, length);
var bytes = ArrayHelpers.CreateByteArray(length);
var copy = bytes.Copy();
Write(stream, copy, 0, length);
var memory = manager.ToArray();
Assert.Equal(bytes, memory, ArrayHelpers.Comparer <byte>());
stream.Seek(0, SeekOrigin.Begin);
byte[] read = ReadAllBytes(stream);
Assert.Equal(stream.Position, read.Length);
byte[] current = manager.ToArray();
Assert.Equal(current, read, ArrayHelpers.Comparer <byte>());
Assert.Equal(bytes, read, ArrayHelpers.Comparer <byte>());
Write(stream, new byte[0], 0, 0);
}
}
public static void LengthTests()
{
using (var manager = new UmsManager(FileAccess.ReadWrite, 1000))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
// TODO: uncomment once we run againts core CLR; currently type load issues with IOException
// Assert.Throws<IOException>(() => stream.SetLength(1001));
Assert.Throws <ArgumentOutOfRangeException>(() => stream.SetLength(SByte.MinValue));
}
}
public static void LengthTests()
{
using (var manager = new UmsManager(FileAccess.ReadWrite, 1000))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
Assert.Throws <IOException>(() => stream.SetLength(1001));
Assert.Throws <ArgumentOutOfRangeException>(() => stream.SetLength(sbyte.MinValue));
const long expectedLength = 500;
stream.Position = 501;
stream.SetLength(expectedLength);
Assert.Equal(expectedLength, stream.Length);
Assert.Equal(expectedLength, stream.Position);
}
}
public static void PositionTests()
{
using (var manager = new UmsManager(FileAccess.ReadWrite, 1000))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
Assert.Throws <ArgumentOutOfRangeException>(() => { stream.Position = -1; }); // "Non-negative number required."
Assert.Throws <ArgumentOutOfRangeException>(() => { stream.Position = unchecked (long.MaxValue + 1); });
Assert.Throws <ArgumentOutOfRangeException>(() => { stream.Position = int.MinValue; });
stream.Position = stream.Length;
Assert.Equal(stream.Position, stream.Length);
stream.Position = stream.Capacity;
Assert.Equal(stream.Position, stream.Capacity);
int mid = (int)stream.Length / 2;
stream.Position = mid;
Assert.Equal(stream.Position, mid);
}
}
public static void SeekTests()
{
const int length = 1000;
using (var manager = new UmsManager(FileAccess.ReadWrite, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
Assert.Throws <IOException>(() => stream.Seek(unchecked (int.MaxValue + 1), SeekOrigin.Begin));
Assert.Throws <IOException>(() => stream.Seek(long.MinValue, SeekOrigin.End));
AssertExtensions.Throws <ArgumentException>(null, () => stream.Seek(0, (SeekOrigin)7)); // Invalid seek origin
stream.Seek(10, SeekOrigin.Begin);
Assert.Equal(10, stream.Position);
Assert.Throws <IOException>(() => stream.Seek(-1, SeekOrigin.Begin)); // An attempt was made to move the position before the beginning of the stream
Assert.Equal(10, stream.Position);
Assert.Throws <IOException>(() => stream.Seek(-(stream.Position + 1), SeekOrigin.Current)); // An attempt was made to move the position before the beginning of the stream
Assert.Equal(10, stream.Position);
Assert.Throws <IOException>(() => stream.Seek(-(stream.Length + 1), SeekOrigin.End)); // "An attempt was made to move the position before the beginning of the stream."
Assert.Equal(10, stream.Position);
// Seek from SeekOrigin.Begin
stream.Seek(0, SeekOrigin.Begin);
for (int position = 0; position < stream.Length; position++)
{
stream.Seek(position, SeekOrigin.Begin);
Assert.Equal(position, stream.Position);
}
for (int position = (int)stream.Length; position >= 0; position--)
{
stream.Seek(position, SeekOrigin.Begin);
Assert.Equal(position, stream.Position);
}
stream.Seek(0, SeekOrigin.Begin);
// Seek from SeekOrigin.End
for (int position = 0; position < stream.Length; position++)
{
stream.Seek(-position, SeekOrigin.End);
Assert.Equal(length - position, stream.Position);
}
for (int position = (int)stream.Length; position >= 0; position--)
{
stream.Seek(-position, SeekOrigin.End);
Assert.Equal(length - position, stream.Position);
}
// Seek from SeekOrigin.Current
stream.Seek(0, SeekOrigin.Begin);
for (int position = 0; position < stream.Length; position++)
{
stream.Seek(1, SeekOrigin.Current);
Assert.Equal(position + 1, stream.Position);
}
for (int position = (int)stream.Length; position > 0; position--)
{
stream.Seek(-1, SeekOrigin.Current);
Assert.Equal(position - 1, stream.Position);
}
}
}
public static void SeekTests()
{
int length = 1000;
using (var manager = new UmsManager(FileAccess.ReadWrite, length))
{
UnmanagedMemoryStream stream = manager.Stream;
UmsTests.ReadWriteUmsInvariants(stream);
// TODO: uncomment once we run againts core CLR; currently type load issues with IOException
//Assert.Throws<IOException>(() => stream.Seek(unchecked(Int32.MaxValue + 1), SeekOrigin.Begin));
//Assert.Throws<IOException>(() => stream.Seek(Int64.MinValue, SeekOrigin.End));
Assert.Throws <ArgumentException>(() => stream.Seek(0, (SeekOrigin)7)); // Invalid seek origin
stream.Seek(10, SeekOrigin.Begin);
Assert.Equal(10, stream.Position);
/* TODO: uncomment once we run againts core CLR; currently type load issues with IOException
* Assert.Throws<IOException>(() => stream.Seek(-1, SeekOrigin.Begin)); // An attempt was made to move the position before the beginning of the stream
* Assert.Equal(10, stream.Position);
*
* Assert.Throws<IOException>(() => stream.Seek(-(stream.Position + 1), SeekOrigin.Current)); // An attempt was made to move the position before the beginning of the stream
* Assert.Equal(10, stream.Position);
*
* Assert.Throws<IOException>(() => stream.Seek(-(stream.Length + 1), SeekOrigin.End)); // "An attempt was made to move the position before the beginning of the stream."
* Assert.Equal(10, stream.Position);
*/
// Seek from SeekOrigin.Begin
stream.Seek(0, SeekOrigin.Begin);
for (int position = 0; position < stream.Length; position++)
{
stream.Seek(position, SeekOrigin.Begin);
Assert.Equal(position, stream.Position);
}
for (int position = (int)stream.Length; position >= 0; position--)
{
stream.Seek(position, SeekOrigin.Begin);
Assert.Equal(position, stream.Position);
}
stream.Seek(0, SeekOrigin.Begin);
// Seek from SeekOrigin.End
for (int position = 0; position < stream.Length; position++)
{
stream.Seek(-position, SeekOrigin.End);
Assert.Equal(length - position, stream.Position);
}
for (int position = (int)stream.Length; position >= 0; position--)
{
stream.Seek(-position, SeekOrigin.End);
Assert.Equal(length - position, stream.Position);
}
// Seek from SeekOrigin.Current
stream.Seek(0, SeekOrigin.Begin);
for (int position = 0; position < stream.Length; position++)
{
stream.Seek(1, SeekOrigin.Current);
Assert.Equal(position + 1, stream.Position);
}
for (int position = (int)stream.Length; position > 0; position--)
{
stream.Seek(-1, SeekOrigin.Current);
Assert.Equal(position - 1, stream.Position);
}
}
}
