system unit testing : basic I/O

tests/test/units/system/tio.pp

@@ -0,0 +1,109 @@
+{ Program to test OS-specific features of the system unit }
+{ routines to test:                                       }
+{   do_open()                                             }
+{   do_read()                                             }
+{   do_write()                                            }
+{   do_close()                                            }
+{   do_filesize()                                         }
+{   do_seek()                                             }
+{   do_truncate()                                         }
+
+{ This routine overwrites/creates a filename called test.dat }
+{ fills it up with values, checks its file size, reads the   }
+{ data back in,                                              }
+
+Program tio;
+
+const
+  FILE_NAME = 'test.dat';
+  FILE_NAME2 = 'test1.dat';
+  DATA_SIZE = 17;
+
+  DATA: array[1..DATA_SIZE] of byte =
+  ($01,$02,$03,$04,$05,$06,$07,$08,
+   $09,$A,$B,$C,$D,$E,$F,$10,
+   $11
+  );
+ 
+  
+
+{$I+}
+var
+ F: File;
+ I: Integer;
+ b: byte;
+ readData : array[1..DATA_SIZE] of byte;
+ BytesRead, BytesWritten : word;
+Begin
+  {------------------------ create and play with a new file --------------------------}
+  BytesWritten := 0;
+  FillChar(readData,DATA_SIZE,0);
+  WriteLn('opening file...');
+  Assign(F,FILE_NAME);
+  Rewrite(F,1);
+  WriteLn('writing to file...');
+  BlockWrite(F,DATA,DATA_SIZE,BytesWritten);
+  if BytesWritten<>DATA_SIZE then
+    RunError(255);
+  WriteLn('getting filesize...');
+  if FileSize(F) <> DATA_SIZE then
+     RunError(255);
+  { Seek to beginning of file }
+  WriteLn('seek to beginning of file...');
+  Seek(F, 0);
+  WriteLn('reading from file...');
+  BlockRead(F,readData,DATA_SIZE,BytesRead);
+  for i:=1 to DATA_SIZE do
+   Begin
+     if readData[i] <> data[i] then
+       RunError(255);
+   end;
+  WriteLn('seeking in file...');
+  Seek(f,5);
+  WriteLn('getting file position...');
+  if filepos(f) <> 5 then
+    RunError(255);
+  WriteLn('truncating file...');
+{
+  Truncate(F);
+  WriteLn(FileSize(F));
+  if FileSize(F) <> 5 then
+   RunError(255);   }
+  WriteLn('closing file...');
+  Close(F);
+  {------------------------ create and play with an old file --------------------------}
+  BytesWritten := 0;
+  FillChar(readData,DATA_SIZE,0);
+  WriteLn('opening file...');
+  Assign(F,FILE_NAME2);
+  Rewrite(F,1);
+  WriteLn('writing to file...');
+  BlockWrite(F,DATA,DATA_SIZE,BytesWritten);
+  if BytesWritten<>DATA_SIZE then
+    RunError(255);
+  WriteLn('closing file...');
+  Close(F);
+  BytesWritten := 0;
+  FillChar(readData,DATA_SIZE,0);
+  WriteLn('opening already created file...');
+  Assign(F,FILE_NAME2);
+  Reset(F,1);
+  WriteLn('writing to file...');
+  BlockWrite(F,DATA,DATA_SIZE,BytesWritten);
+  if BytesWritten<>DATA_SIZE then
+    RunError(255);
+  WriteLn('closing file...');
+  Close(F);
+  Assign(F,FILE_NAME2);
+  WriteLn('renaming file...');
+  ReName(F,'test3.dat');
+  WriteLn('erasing file....');
+  Erase(F);
+end.
+
+{
+ $Log$
+ Revision 1.1  2001-07-14 04:25:00  carl
+ system unit testing : basic I/O
+
+}