+ Mre checking is done now. Also Setsize is checked.

fcl/tests/mstream.pp

@@ -12,12 +12,22 @@ begin
   Stream:=TMemoryStream.Create;
   Writeln ('Initial Size : ',Stream.Size);
   Writeln ('Initial Position : ',Stream.Position);
+  Writeln ('Setting new size to 100');
+  Stream.Size:=100;
+  Writeln ('New Size : ',Stream.Size);
+  Writeln ('new Position : ',Stream.Position);
   Stream.WriteByte  (1);
   Stream.WriteWord  (2);
   Stream.WriteDWord (3);
   Stream.WriteBuffer (S[1],Length(S));
+  Writeln ('Size after write : ',Stream.Size);
+  Writeln ('Position after write : ',Stream.Position);
+  Writeln ('Truncating size');
+  Stream.Size:=Stream.Position;
   Writeln ('Stream Size is : ',Stream.Size);
-  Stream.Seek(0,soFromBeginning);
+  Writeln ('Stream Position : ',Stream.Position);
+  Writeln ('Seek to position 0 : ', Stream.Seek(0,soFromBeginning));
+  Writeln ('new Position : ',Stream.Position);
   If Stream.ReadByte<>1 then  Writeln ('First byte not 1');
   If Stream.ReadWord<>2 then  Writeln ('First word not 2');
   If Stream.ReadDWord<>3 then Writeln ('First Word not 3');