1#!/usr/bin/perl 2# 3# Unit tests of _iwrite function 4# 5# _iwrite($self, $data, $start, $end) 6# 7# 'i' here is for 'insert'. This writes $data at absolute position $start 8# in the file, copying the data at that position downwards--- 9# but only down to position $end. Data at or past $end is not moved 10# or even examined. Since there isn't enough room for the full copy 11# (Because we inserted $data at the beginning) we copy as much as possible 12# and return a string containing the remainder. 13 14my $file = "tf27-$$.txt"; 15$| = 1; 16 17print "1..203\n"; 18 19my $N = 1; 20my $oldfile; 21use Tie::File; 22print "ok $N\n"; $N++; 23 24$: = Tie::File::_default_recsep(); 25 26$FLEN = 40970; # Use files of this length 27$oldfile = mkrand($FLEN); 28print "# MOF tests\n"; 29# (2-85) These were generated by 'gentests.pl' to cover all possible cases 30# (I hope) 31# Legend: 32# x: data is entirely contained within one block 33# x>: data runs from the middle to the end of the block 34# <x: data runs from the start to the middle of the block 35# <x>: data occupies precisely one block 36# x><x: data overlaps one block boundary 37# <x><x: data runs from the start of one block into the middle of the next 38# x><x>: data runs from the middle of one block to the end of the next 39# <x><x>: data occupies two blocks exactly 40# <x><x><x>: data occupies three blocks exactly 41# 0: data is null 42# 43# For each possible alignment of the old and new data, we investigate 44# up to three situations: old data is shorter, old and new data are the 45# same length, and new data is shorter. 46# 47# try($pos, $old, $new) means to run a test where the area being 48# written into starts at position $pos, the area being written into 49# has length $old, and and the new data has length $new. 50try( 8605, 2394, 2394); # old=x , new=x ; old = new 51try( 9768, 1361, 664); # old=x , new=x ; old > new 52try( 9955, 6429, 6429); # old=x> , new=x ; old = new 53try(10550, 5834, 4123); # old=x> , new=x ; old > new 54try(14580, 6158, 851); # old=x><x , new=x ; old > new 55try(13442, 11134, 1572); # old=x><x> , new=x ; old > new 56try( 8192, 514, 514); # old=<x , new=<x ; old = new 57try( 8192, 2196, 858); # old=<x , new=<x ; old > new 58try( 8192, 8192, 8192); # old=<x> , new=<x ; old = new 59try( 8192, 8192, 1290); # old=<x> , new=<x ; old > new 60try( 8192, 10575, 6644); # old=<x><x , new=<x ; old > new 61try( 8192, 16384, 5616); # old=<x><x> , new=<x ; old > new 62try( 8192, 24576, 6253); # old=<x><x><x>, new=<x ; old > new 63try( 9965, 6419, 6419); # old=x> , new=x> ; old = new 64try(16059, 6102, 325); # old=x><x , new=x> ; old > new 65try( 9503, 15073, 6881); # old=x><x> , new=x> ; old > new 66try(16316, 1605, 1605); # old=x><x , new=x><x ; old = new 67try(16093, 4074, 993); # old=x><x , new=x><x ; old > new 68try(14739, 9837, 9837); # old=x><x> , new=x><x ; old = new 69try(14071, 10505, 7344); # old=x><x> , new=x><x ; old > new 70try( 8192, 8192, 8192); # old=<x> , new=<x> ; old = new 71try( 8192, 14817, 8192); # old=<x><x , new=<x> ; old > new 72try( 8192, 16384, 8192); # old=<x><x> , new=<x> ; old > new 73try( 8192, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new 74try( 8192, 9001, 9001); # old=<x><x , new=<x><x ; old = new 75try( 8192, 11760, 10274); # old=<x><x , new=<x><x ; old > new 76try( 8192, 16384, 10781); # old=<x><x> , new=<x><x ; old > new 77try( 8192, 24576, 9284); # old=<x><x><x>, new=<x><x ; old > new 78try(14761, 9815, 9815); # old=x><x> , new=x><x> ; old = new 79try( 8192, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new 80try( 8192, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new 81try( 8192, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new 82try( 8771, 776, 0); # old=x , new=0 ; old > new 83try( 8192, 2813, 0); # old=<x , new=0 ; old > new 84try(13945, 2439, 0); # old=x> , new=0 ; old > new 85try(14493, 6090, 0); # old=x><x , new=0 ; old > new 86try( 8192, 8192, 0); # old=<x> , new=0 ; old > new 87try( 8192, 10030, 0); # old=<x><x , new=0 ; old > new 88try(14983, 9593, 0); # old=x><x> , new=0 ; old > new 89try( 8192, 16384, 0); # old=<x><x> , new=0 ; old > new 90try( 8192, 24576, 0); # old=<x><x><x>, new=0 ; old > new 91try(10489, 0, 0); # old=0 , new=0 ; old = new 92 93print "# SOF tests\n"; 94# (86-133) 95# These tests all take place at the start of the file 96try( 0, 4868, 4868); # old=<x , new=<x ; old = new 97try( 0, 147, 118); # old=<x , new=<x ; old > new 98try( 0, 8192, 8192); # old=<x> , new=<x ; old = new 99try( 0, 8192, 4574); # old=<x> , new=<x ; old > new 100try( 0, 11891, 1917); # old=<x><x , new=<x ; old > new 101try( 0, 16384, 5155); # old=<x><x> , new=<x ; old > new 102try( 0, 24576, 2953); # old=<x><x><x>, new=<x ; old > new 103try( 0, 8192, 8192); # old=<x> , new=<x> ; old = new 104try( 0, 11083, 8192); # old=<x><x , new=<x> ; old > new 105try( 0, 16384, 8192); # old=<x><x> , new=<x> ; old > new 106try( 0, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new 107try( 0, 14126, 14126); # old=<x><x , new=<x><x ; old = new 108try( 0, 12002, 9034); # old=<x><x , new=<x><x ; old > new 109try( 0, 16384, 13258); # old=<x><x> , new=<x><x ; old > new 110try( 0, 24576, 14367); # old=<x><x><x>, new=<x><x ; old > new 111try( 0, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new 112try( 0, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new 113try( 0, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new 114try( 0, 6530, 0); # old=<x , new=0 ; old > new 115try( 0, 8192, 0); # old=<x> , new=0 ; old > new 116try( 0, 14707, 0); # old=<x><x , new=0 ; old > new 117try( 0, 16384, 0); # old=<x><x> , new=0 ; old > new 118try( 0, 24576, 0); # old=<x><x><x>, new=0 ; old > new 119try( 0, 0, 0); # old=0 , new=0 ; old = new 120 121print "# EOF tests 1\n"; 122# (134-169) 123# These tests all take place at the end of the file 124$FLEN = 40960; # Force the file to be exactly 40960 bytes long 125$oldfile = mkrand($FLEN); 126try(32768, 8192, 8192); # old=<x> , new=<x ; old = new 127try(32768, 8192, 4026); # old=<x> , new=<x ; old > new 128try(24576, 16384, 1917); # old=<x><x> , new=<x ; old > new 129try(16384, 24576, 3818); # old=<x><x><x>, new=<x ; old > new 130try(32768, 8192, 8192); # old=<x> , new=<x> ; old = new 131try(24576, 16384, 8192); # old=<x><x> , new=<x> ; old > new 132try(16384, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new 133try(24576, 16384, 12221); # old=<x><x> , new=<x><x ; old > new 134try(16384, 24576, 15030); # old=<x><x><x>, new=<x><x ; old > new 135try(24576, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new 136try(16384, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new 137try(16384, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new 138try(35973, 4987, 0); # old=x> , new=0 ; old > new 139try(32768, 8192, 0); # old=<x> , new=0 ; old > new 140try(29932, 11028, 0); # old=x><x> , new=0 ; old > new 141try(24576, 16384, 0); # old=<x><x> , new=0 ; old > new 142try(16384, 24576, 0); # old=<x><x><x>, new=0 ; old > new 143try(40960, 0, 0); # old=0 , new=0 ; old = new 144 145print "# EOF tests 2\n"; 146# (170-203) 147# These tests all take place at the end of the file 148$FLEN = 42000; # Force the file to be exactly 42000 bytes long 149$oldfile = mkrand($FLEN); 150try(41683, 317, 317); # old=x , new=x ; old = new 151try(41225, 775, 405); # old=x , new=x ; old > new 152try(35709, 6291, 284); # old=x><x , new=x ; old > new 153try(40960, 1040, 1040); # old=<x , new=<x ; old = new 154try(40960, 1040, 378); # old=<x , new=<x ; old > new 155try(32768, 9232, 5604); # old=<x><x , new=<x ; old > new 156try(39994, 2006, 966); # old=x><x , new=x> ; old > new 157try(36725, 5275, 5275); # old=x><x , new=x><x ; old = new 158try(37990, 4010, 3199); # old=x><x , new=x><x ; old > new 159try(32768, 9232, 8192); # old=<x><x , new=<x> ; old > new 160try(32768, 9232, 9232); # old=<x><x , new=<x><x ; old = new 161try(32768, 9232, 8795); # old=<x><x , new=<x><x ; old > new 162try(41500, 500, 0); # old=x , new=0 ; old > new 163try(40960, 1040, 0); # old=<x , new=0 ; old > new 164try(35272, 6728, 0); # old=x><x , new=0 ; old > new 165try(32768, 9232, 0); # old=<x><x , new=0 ; old > new 166try(42000, 0, 0); # old=0 , new=0 ; old = new 167 168sub mkrand { 169 my $len = shift; 170 srand $len; 171 my @c = ('a' .. 'z', 'A' .. 'Z', 0..9, $:); 172 my $d = ""; 173 $d .= $c[rand @c] until length($d) >= $len; 174 substr($d, $len) = ""; # chop it off to the proper length 175 $d; 176} 177 178sub try { 179 my ($s, $len, $newlen) = @_; 180 my $e = $s + $len; 181 182 open F, '>', $file or die "Couldn't open file $file: $!"; 183 binmode F; 184 185 print F $oldfile; 186 close F; 187 188 die "wrong length!" unless -s $file == $FLEN; 189 190 my $newdata = "-" x $newlen; 191 my $expected = $oldfile; 192 193 my $expected_return = substr($expected, $e - $newlen, $newlen, ""); 194 substr($expected, $s, 0, $newdata); 195 196 my $o = tie my @lines, 'Tie::File', $file or die $!; 197 my $actual_return = $o->_iwrite($newdata, $s, $e); 198 undef $o; untie @lines; 199 200 open F, '<', $file or die "Couldn't open file $file: $!"; 201 binmode F; 202 my $actual; 203 { local $/; 204 $actual = <F>; 205 } 206 close F; 207 208 my ($alen, $xlen) = (length $actual, length $expected); 209 unless ($alen == $xlen) { 210 print "# try(@_) expected file length $xlen, actual $alen!\n"; 211 } 212 print $actual eq $expected ? "ok $N\n" : "not ok $N\n"; 213 $N++; 214 215 if (! defined $actual_return && ! defined $expected_return) { 216 print "ok $N\n"; 217 } elsif (! defined $actual_return || ! defined $expected_return) { 218 print "not ok $N\n"; 219 } else { 220 print $actual_return eq $expected_return ? "ok $N\n" : "not ok $N\n"; 221 } 222 $N++; 223} 224 225sub ctrlfix { 226 for (@_) { 227 s/\n/\\n/g; 228 s/\r/\\r/g; 229 } 230} 231 232END { 233 1 while unlink $file; 234} 235 236