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|
#!/usr/bin/perl
use strict;
use warnings;
#
# Unit tests of _twrite function
#
# _twrite($self, $data, $pos, $len)
#
# 't' here is for 'tail'. This writes $data at absolute position $pos
# in the file, overwriting exactly $len of the bytes at that position.
# Everything else is moved down or up, dependong on whether
# length($data) > $len or length($data) < $len.
# $len == 0 is a pure insert; $len == length($data) is a simple overwrite.
#
my $file = "tf26-$$.txt";
print "1..181\n";
my $N = 1;
use Tie::File;
print "ok $N\n"; $N++;
$: = Tie::File::_default_recsep();
# (2) Peter Scott sent this one. It fails in 0.51 and works in 0.90
# <4.3.2.7.2.20020331102819.00b913d0@shell2.webquarry.com>
#
# The problem was premature termination in the inner loop
# because you had $more_data scoped *inside* the block instead of outside.
# 20020331
open F, '>', $file or die "Couldn't open $file: $!";
binmode F;
for (1..100) {
print F "$_ ", 'a'x150, $: ;
}
close F;
# The file is now 15292 characters long on Unix, 15392 on Win32
die -s $file unless -s $file == 15292 + 100 * length($:);
tie my @lines, 'Tie::File', $file or die $!;
push @lines, "1001 ".('a' x 100);
splice @lines, 0, 1;
untie @lines;
my $s = -s $file;
my $x = 15292 - 152 + 105 + 100*length($:);
print $s == $x
? "ok $N\n" : "not ok $N # expected $x, got $s\n";
$N++;
my @subtests = qw(x <x x> x><x <x> <x><x x><x> <x><x> <x><x><x> 0);
# (3-73) These were generated by 'gentests.pl' to cover all possible cases
# (I hope)
# Legend:
# x: data is entirely contained within one block
# x>: data runs from the middle to the end of the block
# <x: data runs from the start to the middle of the block
# <x>: data occupies precisely one block
# x><x: data overlaps one block boundary
# <x><x: data runs from the start of one block into the middle of the next
# x><x>: data runs from the middle of one block to the end of the next
# <x><x>: data occupies two blocks exactly
# <x><x><x>: data occupies three blocks exactly
# 0: data is null
#
# For each possible alignment of the old and new data, we investigate
# up to three situations: old data is shorter, old and new data are the
# same length, and new data is shorter.
#
# try($pos, $old, $new) means to run a test where the data starts at
# position $pos, the old data has length $old,
# and the new data has length $new.
try( 9659, 6635, 6691); # old=x , new=x ; old < new
try( 8605, 2394, 2394); # old=x , new=x ; old = new
try( 9768, 1361, 664); # old=x , new=x ; old > new
try( 9955, 6429, 6429); # old=x> , new=x ; old = new
try(10550, 5834, 4123); # old=x> , new=x ; old > new
try(14580, 6158, 851); # old=x><x , new=x ; old > new
try(13442, 11134, 1572); # old=x><x> , new=x ; old > new
try( 8394, 0, 5742); # old=0 , new=x ; old < new
try( 8192, 2819, 6738); # old=<x , new=<x ; old < new
try( 8192, 514, 514); # old=<x , new=<x ; old = new
try( 8192, 2196, 858); # old=<x , new=<x ; old > new
try( 8192, 8192, 8192); # old=<x> , new=<x ; old = new
try( 8192, 8192, 1290); # old=<x> , new=<x ; old > new
try( 8192, 10575, 6644); # old=<x><x , new=<x ; old > new
try( 8192, 16384, 5616); # old=<x><x> , new=<x ; old > new
try( 8192, 24576, 6253); # old=<x><x><x>, new=<x ; old > new
try( 8192, 0, 6870); # old=0 , new=<x ; old < new
try( 8478, 6259, 7906); # old=x , new=x> ; old < new
try( 9965, 6419, 6419); # old=x> , new=x> ; old = new
try(16059, 6102, 325); # old=x><x , new=x> ; old > new
try( 9503, 15073, 6881); # old=x><x> , new=x> ; old > new
try( 9759, 0, 6625); # old=0 , new=x> ; old < new
try( 8525, 2081, 8534); # old=x , new=x><x ; old < new
try(15550, 834, 1428); # old=x> , new=x><x ; old < new
try(14966, 1668, 3479); # old=x><x , new=x><x ; old < new
try(16316, 1605, 1605); # old=x><x , new=x><x ; old = new
try(16093, 4074, 993); # old=x><x , new=x><x ; old > new
try(14739, 9837, 9837); # old=x><x> , new=x><x ; old = new
try(14071, 10505, 7344); # old=x><x> , new=x><x ; old > new
try(12602, 0, 8354); # old=0 , new=x><x ; old < new
try( 8192, 2767, 8192); # old=<x , new=<x> ; old < new
try( 8192, 8192, 8192); # old=<x> , new=<x> ; old = new
try( 8192, 14817, 8192); # old=<x><x , new=<x> ; old > new
try( 8192, 16384, 8192); # old=<x><x> , new=<x> ; old > new
try( 8192, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
try( 8192, 0, 8192); # old=0 , new=<x> ; old < new
try( 8192, 6532, 10882); # old=<x , new=<x><x ; old < new
try( 8192, 8192, 16044); # old=<x> , new=<x><x ; old < new
try( 8192, 9555, 11020); # old=<x><x , new=<x><x ; old < new
try( 8192, 9001, 9001); # old=<x><x , new=<x><x ; old = new
try( 8192, 11760, 10274); # old=<x><x , new=<x><x ; old > new
try( 8192, 16384, 10781); # old=<x><x> , new=<x><x ; old > new
try( 8192, 24576, 9284); # old=<x><x><x>, new=<x><x ; old > new
try( 8192, 0, 12488); # old=0 , new=<x><x ; old < new
try( 8222, 6385, 16354); # old=x , new=x><x> ; old < new
try(13500, 2884, 11076); # old=x> , new=x><x> ; old < new
try(14069, 4334, 10507); # old=x><x , new=x><x> ; old < new
try(14761, 9815, 9815); # old=x><x> , new=x><x> ; old = new
try(10469, 0, 14107); # old=0 , new=x><x> ; old < new
try( 8192, 4181, 16384); # old=<x , new=<x><x> ; old < new
try( 8192, 8192, 16384); # old=<x> , new=<x><x> ; old < new
try( 8192, 12087, 16384); # old=<x><x , new=<x><x> ; old < new
try( 8192, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
try( 8192, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
try( 8192, 0, 16384); # old=0 , new=<x><x> ; old < new
try( 8192, 4968, 24576); # old=<x , new=<x><x><x>; old < new
try( 8192, 8192, 24576); # old=<x> , new=<x><x><x>; old < new
try( 8192, 14163, 24576); # old=<x><x , new=<x><x><x>; old < new
try( 8192, 16384, 24576); # old=<x><x> , new=<x><x><x>; old < new
try( 8192, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
try( 8192, 0, 24576); # old=0 , new=<x><x><x>; old < new
try( 8771, 776, 0); # old=x , new=0 ; old > new
try( 8192, 2813, 0); # old=<x , new=0 ; old > new
try(13945, 2439, 0); # old=x> , new=0 ; old > new
try(14493, 6090, 0); # old=x><x , new=0 ; old > new
try( 8192, 8192, 0); # old=<x> , new=0 ; old > new
try( 8192, 10030, 0); # old=<x><x , new=0 ; old > new
try(14983, 9593, 0); # old=x><x> , new=0 ; old > new
try( 8192, 16384, 0); # old=<x><x> , new=0 ; old > new
try( 8192, 24576, 0); # old=<x><x><x>, new=0 ; old > new
try(10489, 0, 0); # old=0 , new=0 ; old = new
# (74-114)
# These tests all take place at the start of the file
try( 0, 771, 1593); # old=<x , new=<x ; old < new
try( 0, 4868, 4868); # old=<x , new=<x ; old = new
try( 0, 147, 118); # old=<x , new=<x ; old > new
try( 0, 8192, 8192); # old=<x> , new=<x ; old = new
try( 0, 8192, 4574); # old=<x> , new=<x ; old > new
try( 0, 11891, 1917); # old=<x><x , new=<x ; old > new
try( 0, 16384, 5155); # old=<x><x> , new=<x ; old > new
try( 0, 24576, 2953); # old=<x><x><x>, new=<x ; old > new
try( 0, 0, 1317); # old=0 , new=<x ; old < new
try( 0, 5609, 8192); # old=<x , new=<x> ; old < new
try( 0, 8192, 8192); # old=<x> , new=<x> ; old = new
try( 0, 11083, 8192); # old=<x><x , new=<x> ; old > new
try( 0, 16384, 8192); # old=<x><x> , new=<x> ; old > new
try( 0, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
try( 0, 0, 8192); # old=0 , new=<x> ; old < new
try( 0, 6265, 9991); # old=<x , new=<x><x ; old < new
try( 0, 8192, 16119); # old=<x> , new=<x><x ; old < new
try( 0, 10218, 11888); # old=<x><x , new=<x><x ; old < new
try( 0, 14126, 14126); # old=<x><x , new=<x><x ; old = new
try( 0, 12002, 9034); # old=<x><x , new=<x><x ; old > new
try( 0, 16384, 13258); # old=<x><x> , new=<x><x ; old > new
try( 0, 24576, 14367); # old=<x><x><x>, new=<x><x ; old > new
try( 0, 0, 10881); # old=0 , new=<x><x ; old < new
try( 0, 6448, 16384); # old=<x , new=<x><x> ; old < new
try( 0, 8192, 16384); # old=<x> , new=<x><x> ; old < new
try( 0, 15082, 16384); # old=<x><x , new=<x><x> ; old < new
try( 0, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
try( 0, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
try( 0, 0, 16384); # old=0 , new=<x><x> ; old < new
try( 0, 2421, 24576); # old=<x , new=<x><x><x>; old < new
try( 0, 8192, 24576); # old=<x> , new=<x><x><x>; old < new
try( 0, 11655, 24576); # old=<x><x , new=<x><x><x>; old < new
try( 0, 16384, 24576); # old=<x><x> , new=<x><x><x>; old < new
try( 0, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
try( 0, 0, 24576); # old=0 , new=<x><x><x>; old < new
try( 0, 6530, 0); # old=<x , new=0 ; old > new
try( 0, 8192, 0); # old=<x> , new=0 ; old > new
try( 0, 14707, 0); # old=<x><x , new=0 ; old > new
try( 0, 16384, 0); # old=<x><x> , new=0 ; old > new
try( 0, 24576, 0); # old=<x><x><x>, new=0 ; old > new
try( 0, 0, 0); # old=0 , new=0 ; old = new
# (115-141)
# These tests all take place at the end of the file
my $FLEN = 40960; # Force the file to be exactly 40960 bytes long
try(32768, 8192, 8192); # old=<x> , new=<x ; old = new
try(32768, 8192, 4026); # old=<x> , new=<x ; old > new
try(24576, 16384, 1917); # old=<x><x> , new=<x ; old > new
try(16384, 24576, 3818); # old=<x><x><x>, new=<x ; old > new
try(40960, 0, 2779); # old=0 , new=<x ; old < new
try(32768, 8192, 8192); # old=<x> , new=<x> ; old = new
try(24576, 16384, 8192); # old=<x><x> , new=<x> ; old > new
try(16384, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
try(40960, 0, 8192); # old=0 , new=<x> ; old < new
try(32768, 8192, 10724); # old=<x> , new=<x><x ; old < new
try(24576, 16384, 12221); # old=<x><x> , new=<x><x ; old > new
try(16384, 24576, 15030); # old=<x><x><x>, new=<x><x ; old > new
try(40960, 0, 11752); # old=0 , new=<x><x ; old < new
try(32768, 8192, 16384); # old=<x> , new=<x><x> ; old < new
try(24576, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
try(16384, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
try(40960, 0, 16384); # old=0 , new=<x><x> ; old < new
try(32768, 8192, 24576); # old=<x> , new=<x><x><x>; old < new
try(24576, 16384, 24576); # old=<x><x> , new=<x><x><x>; old < new
try(16384, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
try(40960, 0, 24576); # old=0 , new=<x><x><x>; old < new
try(35973, 4987, 0); # old=x> , new=0 ; old > new
try(32768, 8192, 0); # old=<x> , new=0 ; old > new
try(29932, 11028, 0); # old=x><x> , new=0 ; old > new
try(24576, 16384, 0); # old=<x><x> , new=0 ; old > new
try(16384, 24576, 0); # old=<x><x><x>, new=0 ; old > new
try(40960, 0, 0); # old=0 , new=0 ; old = new
# (142-181)
# These tests all take place at the end of the file
$FLEN = 42000; # Force the file to be exactly 42000 bytes long
try(41275, 725, 4059); # old=x , new=x ; old < new
try(41683, 317, 317); # old=x , new=x ; old = new
try(41225, 775, 405); # old=x , new=x ; old > new
try(35709, 6291, 284); # old=x><x , new=x ; old > new
try(42000, 0, 2434); # old=0 , new=x ; old < new
try(40960, 1040, 1608); # old=<x , new=<x ; old < new
try(40960, 1040, 1040); # old=<x , new=<x ; old = new
try(40960, 1040, 378); # old=<x , new=<x ; old > new
try(32768, 9232, 5604); # old=<x><x , new=<x ; old > new
try(42000, 0, 6637); # old=0 , new=<x ; old < new
try(41022, 978, 8130); # old=x , new=x> ; old < new
try(39994, 2006, 966); # old=x><x , new=x> ; old > new
try(42000, 0, 7152); # old=0 , new=x> ; old < new
try(41613, 387, 10601); # old=x , new=x><x ; old < new
try(38460, 3540, 3938); # old=x><x , new=x><x ; old < new
try(36725, 5275, 5275); # old=x><x , new=x><x ; old = new
try(37990, 4010, 3199); # old=x><x , new=x><x ; old > new
try(42000, 0, 9189); # old=0 , new=x><x ; old < new
try(40960, 1040, 8192); # old=<x , new=<x> ; old < new
try(32768, 9232, 8192); # old=<x><x , new=<x> ; old > new
try(42000, 0, 8192); # old=0 , new=<x> ; old < new
try(40960, 1040, 11778); # old=<x , new=<x><x ; old < new
try(32768, 9232, 13792); # old=<x><x , new=<x><x ; old < new
try(32768, 9232, 9232); # old=<x><x , new=<x><x ; old = new
try(32768, 9232, 8795); # old=<x><x , new=<x><x ; old > new
try(42000, 0, 8578); # old=0 , new=<x><x ; old < new
try(41531, 469, 15813); # old=x , new=x><x> ; old < new
try(39618, 2382, 9534); # old=x><x , new=x><x> ; old < new
try(42000, 0, 15344); # old=0 , new=x><x> ; old < new
try(40960, 1040, 16384); # old=<x , new=<x><x> ; old < new
try(32768, 9232, 16384); # old=<x><x , new=<x><x> ; old < new
try(42000, 0, 16384); # old=0 , new=<x><x> ; old < new
try(40960, 1040, 24576); # old=<x , new=<x><x><x>; old < new
try(32768, 9232, 24576); # old=<x><x , new=<x><x><x>; old < new
try(42000, 0, 24576); # old=0 , new=<x><x><x>; old < new
try(41500, 500, 0); # old=x , new=0 ; old > new
try(40960, 1040, 0); # old=<x , new=0 ; old > new
try(35272, 6728, 0); # old=x><x , new=0 ; old > new
try(32768, 9232, 0); # old=<x><x , new=0 ; old > new
try(42000, 0, 0); # old=0 , new=0 ; old = new
sub try {
my ($pos, $len, $newlen) = @_;
open F, '>', $file or die "Couldn't open file $file: $!";
binmode F;
# The record has exactly 17 characters. This will help ensure that
# even if _twrite screws up, the data doesn't coincidentally
# look good because the remainder accidentally lines up.
my $d = substr("0123456789abcdef$:", -17);
my $recs = defined($FLEN) ?
int($FLEN/length($d))+1 : # enough to make up at least $FLEN
int(8192*5/length($d))+1; # at least 5 blocks' worth
my $oldfile = $d x $recs;
my $flen = defined($FLEN) ? $FLEN : $recs * 17;
substr($oldfile, $FLEN) = "" if defined $FLEN; # truncate
print F $oldfile;
close F;
die "wrong length!" unless -s $file == $flen;
my $newdata = "-" x $newlen;
my $expected = $oldfile;
substr($expected, $pos, $len) = $newdata;
my $o = tie my @lines, 'Tie::File', $file or die $!;
$o->_twrite($newdata, $pos, $len);
undef $o; untie @lines;
open F, '<', $file or die "Couldn't open file $file: $!";
binmode F;
my $actual;
{ local $/;
$actual = <F>;
}
close F;
my ($alen, $xlen) = (length $actual, length $expected);
unless ($alen == $xlen) {
print "# try(@_) expected file length $xlen, actual $alen!\n";
}
print $actual eq $expected ? "ok $N\n" : "not ok $N\n";
$N++;
}
END {
1 while unlink $file;
}
|
