Implemented stream tests

fcl/tests/mstream.pp

@@ -0,0 +1,35 @@
+Program TestStream;
+
+uses objpas, classes;
+
+Var Stream : TMemoryStream;
+    S,T : String;
+   
+begin
+  S:='ABCDEFGHIJKLMNOPQRSTUVWXYZ';
+  T:=S;
+  Writeln ('Creating stream.');
+  Stream:=TMemoryStream.Create;
+  Writeln ('Initial Size : ',Stream.Size);
+  Writeln ('Initial Capacity : ',Stream.Capacity);
+  Writeln ('Initial Position : ',Stream.Position);
+  Stream.WriteByte  (1);
+  Stream.WriteWord  (2);
+  Stream.WriteDWord (3);
+  Stream.WriteBuffer (S[1],Length(S));
+  Writeln ('Stream Size is : ',Stream.Size);
+  Writeln ('Streem Capacity is : ',STream.Capacity);
+  Stream.Seek(0,soFromBeginning);
+  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');
+  If Stream.Read(T[1],Length(S))<>Length(S) then Writeln ('Couldn''t read string.');
+  Stream.WriteByte  (1);
+  Stream.WriteWord  (2);
+  Stream.WriteDWord (3);
+  Stream.WriteBuffer (S[1],Length(S));
+  Writeln ('Stream Size is : ',Stream.Size);
+  Writeln ('Streem Capacity is : ',STream.Capacity);
+  Stream.SaveToFile('Test2.dat');
+  Stream.Free;
+end.