/* testvfs.c - for 415.340 and 415.341 Assignment 2
   Tests the virtual file system.
   Written by Robert Sheehan - 27/07/96
   */

#include "vfs.h"

#define BIG 1024*16

void main(int argc, char *argv[])
{
  char bigbuffer[BIG];
  int i;
  char file3[] = "A file name that is of a medium length";
  
  printf("Welcome to the virtual file system tester program.\n\n");

  if (vfs_init() != VFSOK) {
    vfs_error("");
    exit(1);
  }
  vfs_display();
  if (vfs_create("", ORDINARY) != VFSOK)
    vfs_error("Creating empty file name");
  if (vfs_create("First file", ORDINARY) != VFSOK)
    vfs_error("Creating \"First file\"");
  if (vfs_create("First file", ORDINARY) != VFSOK)
    vfs_error("Creating \"First file\" the second time");
  if (vfs_open("First file", WRITE) != VFSOK)
    vfs_error("Opening \"First file\"");
  vfs_display();
  if (vfs_open("First file", WRITE) != VFSOK)
    vfs_error("Opening \"First file\" the second time");
  if (vfs_create("Second file", ORDINARY) != VFSOK)
    vfs_error("Creating \"Second file\"");
  vfs_display();
  if (vfs_write("Second file", "Hello", 5) != VFSOK)
    vfs_error("Writing to \"Second file\" before opening");
  if (vfs_write("First file", "Hello", 5) != VFSOK)
    vfs_error("Writing to \"First file\"");
  vfs_display();
  if (vfs_open("Second file", WRITE) != VFSOK)
    vfs_error("Opening \"Second file\"");
  if (vfs_write("Second file", bigbuffer, BIG) != VFSOK)
    vfs_error("Writing oversized buffer");
  vfs_display();
  for (i = 1; i <= 4; i++)
    if (vfs_write("Second file", "A line of exactly 64 characters, --- four of these fills a block", 64) != VFSOK)
      vfs_error("Writing \"Second file\"");
  vfs_display();
  if (vfs_write("Second file", "x", 1) != VFSOK)
    vfs_error("Adding one character to \"Second file\"");
  vfs_display();
  if (vfs_create(file3, ORDINARY) != VFSOK)
    vfs_error("Creating file3");
  vfs_display();
  if (vfs_open(file3, WRITE) != VFSOK)
    vfs_error("Opening file3");
  while (vfs_write(file3, "abc", 3) == VFSOK);
  vfs_error("Writing lots to file3");
  vfs_display();
  if (vfs_close("Second file") != VFSOK)
    vfs_error("Closing \"Second file\"");
  if (vfs_write("Second file", "x", 1) != VFSOK)
    vfs_error("Adding another character to \"Second file\"");
  if (vfs_close("Second file") != VFSOK)
    vfs_error("Closing \"Second file\" again");
  if (vfs_close("First file") != VFSOK)
    vfs_error("Closing \"First file\"");
  if (vfs_close(file3) != VFSOK)
    vfs_error("Closing file3");
}