3 # Unit tests of _iwrite function
5 # _iwrite($self, $data, $start, $end)
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.
14 my $file = "tf$$.txt";
22 print "ok $N\n"; $N++;
24 $: = Tie::File::_default_recsep();
26 $FLEN = 40970; # Use files of this length
27 $oldfile = mkrand($FLEN);
28 print "# MOF tests\n";
29 # (2-85) These were generated by 'gentests.pl' to cover all possible cases
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
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.
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.
50 try( 8605, 2394, 2394); # old=x , new=x ; old = new
51 try( 9768, 1361, 664); # old=x , new=x ; old > new
52 try( 9955, 6429, 6429); # old=x> , new=x ; old = new
53 try(10550, 5834, 4123); # old=x> , new=x ; old > new
54 try(14580, 6158, 851); # old=x><x , new=x ; old > new
55 try(13442, 11134, 1572); # old=x><x> , new=x ; old > new
56 try( 8192, 514, 514); # old=<x , new=<x ; old = new
57 try( 8192, 2196, 858); # old=<x , new=<x ; old > new
58 try( 8192, 8192, 8192); # old=<x> , new=<x ; old = new
59 try( 8192, 8192, 1290); # old=<x> , new=<x ; old > new
60 try( 8192, 10575, 6644); # old=<x><x , new=<x ; old > new
61 try( 8192, 16384, 5616); # old=<x><x> , new=<x ; old > new
62 try( 8192, 24576, 6253); # old=<x><x><x>, new=<x ; old > new
63 try( 9965, 6419, 6419); # old=x> , new=x> ; old = new
64 try(16059, 6102, 325); # old=x><x , new=x> ; old > new
65 try( 9503, 15073, 6881); # old=x><x> , new=x> ; old > new
66 try(16316, 1605, 1605); # old=x><x , new=x><x ; old = new
67 try(16093, 4074, 993); # old=x><x , new=x><x ; old > new
68 try(14739, 9837, 9837); # old=x><x> , new=x><x ; old = new
69 try(14071, 10505, 7344); # old=x><x> , new=x><x ; old > new
70 try( 8192, 8192, 8192); # old=<x> , new=<x> ; old = new
71 try( 8192, 14817, 8192); # old=<x><x , new=<x> ; old > new
72 try( 8192, 16384, 8192); # old=<x><x> , new=<x> ; old > new
73 try( 8192, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
74 try( 8192, 9001, 9001); # old=<x><x , new=<x><x ; old = new
75 try( 8192, 11760, 10274); # old=<x><x , new=<x><x ; old > new
76 try( 8192, 16384, 10781); # old=<x><x> , new=<x><x ; old > new
77 try( 8192, 24576, 9284); # old=<x><x><x>, new=<x><x ; old > new
78 try(14761, 9815, 9815); # old=x><x> , new=x><x> ; old = new
79 try( 8192, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
80 try( 8192, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
81 try( 8192, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
82 try( 8771, 776, 0); # old=x , new=0 ; old > new
83 try( 8192, 2813, 0); # old=<x , new=0 ; old > new
84 try(13945, 2439, 0); # old=x> , new=0 ; old > new
85 try(14493, 6090, 0); # old=x><x , new=0 ; old > new
86 try( 8192, 8192, 0); # old=<x> , new=0 ; old > new
87 try( 8192, 10030, 0); # old=<x><x , new=0 ; old > new
88 try(14983, 9593, 0); # old=x><x> , new=0 ; old > new
89 try( 8192, 16384, 0); # old=<x><x> , new=0 ; old > new
90 try( 8192, 24576, 0); # old=<x><x><x>, new=0 ; old > new
91 try(10489, 0, 0); # old=0 , new=0 ; old = new
93 print "# SOF tests\n";
95 # These tests all take place at the start of the file
96 try( 0, 4868, 4868); # old=<x , new=<x ; old = new
97 try( 0, 147, 118); # old=<x , new=<x ; old > new
98 try( 0, 8192, 8192); # old=<x> , new=<x ; old = new
99 try( 0, 8192, 4574); # old=<x> , new=<x ; old > new
100 try( 0, 11891, 1917); # old=<x><x , new=<x ; old > new
101 try( 0, 16384, 5155); # old=<x><x> , new=<x ; old > new
102 try( 0, 24576, 2953); # old=<x><x><x>, new=<x ; old > new
103 try( 0, 8192, 8192); # old=<x> , new=<x> ; old = new
104 try( 0, 11083, 8192); # old=<x><x , new=<x> ; old > new
105 try( 0, 16384, 8192); # old=<x><x> , new=<x> ; old > new
106 try( 0, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
107 try( 0, 14126, 14126); # old=<x><x , new=<x><x ; old = new
108 try( 0, 12002, 9034); # old=<x><x , new=<x><x ; old > new
109 try( 0, 16384, 13258); # old=<x><x> , new=<x><x ; old > new
110 try( 0, 24576, 14367); # old=<x><x><x>, new=<x><x ; old > new
111 try( 0, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
112 try( 0, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
113 try( 0, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
114 try( 0, 6530, 0); # old=<x , new=0 ; old > new
115 try( 0, 8192, 0); # old=<x> , new=0 ; old > new
116 try( 0, 14707, 0); # old=<x><x , new=0 ; old > new
117 try( 0, 16384, 0); # old=<x><x> , new=0 ; old > new
118 try( 0, 24576, 0); # old=<x><x><x>, new=0 ; old > new
119 try( 0, 0, 0); # old=0 , new=0 ; old = new
121 print "# EOF tests 1\n";
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);
126 try(32768, 8192, 8192); # old=<x> , new=<x ; old = new
127 try(32768, 8192, 4026); # old=<x> , new=<x ; old > new
128 try(24576, 16384, 1917); # old=<x><x> , new=<x ; old > new
129 try(16384, 24576, 3818); # old=<x><x><x>, new=<x ; old > new
130 try(32768, 8192, 8192); # old=<x> , new=<x> ; old = new
131 try(24576, 16384, 8192); # old=<x><x> , new=<x> ; old > new
132 try(16384, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
133 try(24576, 16384, 12221); # old=<x><x> , new=<x><x ; old > new
134 try(16384, 24576, 15030); # old=<x><x><x>, new=<x><x ; old > new
135 try(24576, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
136 try(16384, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
137 try(16384, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
138 try(35973, 4987, 0); # old=x> , new=0 ; old > new
139 try(32768, 8192, 0); # old=<x> , new=0 ; old > new
140 try(29932, 11028, 0); # old=x><x> , new=0 ; old > new
141 try(24576, 16384, 0); # old=<x><x> , new=0 ; old > new
142 try(16384, 24576, 0); # old=<x><x><x>, new=0 ; old > new
143 try(40960, 0, 0); # old=0 , new=0 ; old = new
145 print "# EOF tests 2\n";
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);
150 try(41683, 317, 317); # old=x , new=x ; old = new
151 try(41225, 775, 405); # old=x , new=x ; old > new
152 try(35709, 6291, 284); # old=x><x , new=x ; old > new
153 try(40960, 1040, 1040); # old=<x , new=<x ; old = new
154 try(40960, 1040, 378); # old=<x , new=<x ; old > new
155 try(32768, 9232, 5604); # old=<x><x , new=<x ; old > new
156 try(39994, 2006, 966); # old=x><x , new=x> ; old > new
157 try(36725, 5275, 5275); # old=x><x , new=x><x ; old = new
158 try(37990, 4010, 3199); # old=x><x , new=x><x ; old > new
159 try(32768, 9232, 8192); # old=<x><x , new=<x> ; old > new
160 try(32768, 9232, 9232); # old=<x><x , new=<x><x ; old = new
161 try(32768, 9232, 8795); # old=<x><x , new=<x><x ; old > new
162 try(41500, 500, 0); # old=x , new=0 ; old > new
163 try(40960, 1040, 0); # old=<x , new=0 ; old > new
164 try(35272, 6728, 0); # old=x><x , new=0 ; old > new
165 try(32768, 9232, 0); # old=<x><x , new=0 ; old > new
166 try(42000, 0, 0); # old=0 , new=0 ; old = new
171 my @c = ('a' .. 'z', 'A' .. 'Z', 0..9, $:);
173 $d .= $c[rand @c] until length($d) >= $len;
174 substr($d, $len) = ""; # chop it off to the proper length
179 my ($s, $len, $newlen) = @_;
182 open F, "> $file" or die "Couldn't open file $file: $!";
188 die "wrong length!" unless -s $file == $FLEN;
190 my $newdata = "-" x $newlen;
191 my $expected = $oldfile;
193 my $expected_return = substr($expected, $e - $newlen, $newlen, "");
194 substr($expected, $s, 0, $newdata);
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;
200 open F, "< $file" or die "Couldn't open file $file: $!";
208 my ($alen, $xlen) = (length $actual, length $expected);
209 unless ($alen == $xlen) {
210 print "# try(@_) expected file length $xlen, actual $alen!\n";
212 print $actual eq $expected ? "ok $N\n" : "not ok $N\n";
215 if (! defined $actual_return && ! defined $expected_return) {
217 } elsif (! defined $actual_return || ! defined $expected_return) {
220 print $actual_return eq $expected_return ? "ok $N\n" : "not ok $N\n";
233 1 while unlink $file;