3 # Unit tests of _mtwrite function
5 # _mtwrite($self, $d1, $s1, $l1, $d2, $s2, $l2, ...)
7 # 'm' here is for 'multiple'. This writes data $d1 at position $s1
8 # over a block of space $l1, moving subsequent data up or down as necessary.
10 my $file = "tf$$.txt";
18 print "ok $N\n"; $N++;
20 $: = Tie::File::_default_recsep();
22 # Only these are used for the triple-region tests
38 $FLEN = 40970; # Use files of this length
39 $oldfile = mkrand($FLEN);
40 print "# MOF tests\n";
41 # These were generated by 'gentests.pl' to cover all possible cases
44 # x: data is entirely contained within one block
45 # x>: data runs from the middle to the end of the block
46 # <x: data runs from the start to the middle of the block
47 # <x>: data occupies precisely one block
48 # x><x: data overlaps one block boundary
49 # <x><x: data runs from the start of one block into the middle of the next
50 # x><x>: data runs from the middle of one block to the end of the next
51 # <x><x>: data occupies two blocks exactly
52 # <x><x><x>: data occupies three blocks exactly
55 # For each possible alignment of the old and new data, we investigate
56 # up to three situations: old data is shorter, old and new data are the
57 # same length, and new data is shorter.
59 # try($pos, $old, $new) means to run a test where the area being
60 # written into starts at position $pos, the area being written into
61 # has length $old, and and the new data has length $new.
62 try( 8605, 2394, 2394); # old=x , new=x ; old = new
63 try( 9768, 1361, 664); # old=x , new=x ; old > new
64 try( 9955, 6429, 6429); # old=x> , new=x ; old = new
65 try(10550, 5834, 4123); # old=x> , new=x ; old > new
66 try(14580, 6158, 851); # old=x><x , new=x ; old > new
67 try(13442, 11134, 1572); # old=x><x> , new=x ; old > new
68 try( 8192, 514, 514); # old=<x , new=<x ; old = new
69 try( 8192, 2196, 858); # old=<x , new=<x ; old > new
70 try( 8192, 8192, 8192); # old=<x> , new=<x ; old = new
71 try( 8192, 8192, 1290); # old=<x> , new=<x ; old > new
72 try( 8192, 10575, 6644); # old=<x><x , new=<x ; old > new
73 try( 8192, 16384, 5616); # old=<x><x> , new=<x ; old > new
74 try( 8192, 24576, 6253); # old=<x><x><x>, new=<x ; old > new
75 try( 9965, 6419, 6419); # old=x> , new=x> ; old = new
76 try(16059, 6102, 325); # old=x><x , new=x> ; old > new
77 try( 9503, 15073, 6881); # old=x><x> , new=x> ; old > new
78 try(16316, 1605, 1605); # old=x><x , new=x><x ; old = new
79 try(16093, 4074, 993); # old=x><x , new=x><x ; old > new
80 try(14739, 9837, 9837); # old=x><x> , new=x><x ; old = new
81 try(14071, 10505, 7344); # old=x><x> , new=x><x ; old > new
82 try( 8192, 8192, 8192); # old=<x> , new=<x> ; old = new
83 try( 8192, 14817, 8192); # old=<x><x , new=<x> ; old > new
84 try( 8192, 16384, 8192); # old=<x><x> , new=<x> ; old > new
85 try( 8192, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
86 try( 8192, 9001, 9001); # old=<x><x , new=<x><x ; old = new
87 try( 8192, 11760, 10274); # old=<x><x , new=<x><x ; old > new
88 try( 8192, 16384, 10781); # old=<x><x> , new=<x><x ; old > new
89 try( 8192, 24576, 9284); # old=<x><x><x>, new=<x><x ; old > new
90 try(14761, 9815, 9815); # old=x><x> , new=x><x> ; old = new
91 try( 8192, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
92 try( 8192, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
93 try( 8192, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
94 try( 8771, 776, 0); # old=x , new=0 ; old > new
95 try( 8192, 2813, 0); # old=<x , new=0 ; old > new
96 try(13945, 2439, 0); # old=x> , new=0 ; old > new
97 try(14493, 6090, 0); # old=x><x , new=0 ; old > new
98 try( 8192, 8192, 0); # old=<x> , new=0 ; old > new
99 try( 8192, 10030, 0); # old=<x><x , new=0 ; old > new
100 try(14983, 9593, 0); # old=x><x> , new=0 ; old > new
101 try( 8192, 16384, 0); # old=<x><x> , new=0 ; old > new
102 try( 8192, 24576, 0); # old=<x><x><x>, new=0 ; old > new
103 try(10489, 0, 0); # old=0 , new=0 ; old = new
105 print "# SOF tests\n";
106 # These tests all take place at the start of the file
107 try( 0, 4868, 4868); # old=<x , new=<x ; old = new
108 try( 0, 147, 118); # old=<x , new=<x ; old > new
109 try( 0, 8192, 8192); # old=<x> , new=<x ; old = new
110 try( 0, 8192, 4574); # old=<x> , new=<x ; old > new
111 try( 0, 11891, 1917); # old=<x><x , new=<x ; old > new
112 try( 0, 16384, 5155); # old=<x><x> , new=<x ; old > new
113 try( 0, 24576, 2953); # old=<x><x><x>, new=<x ; old > new
114 try( 0, 8192, 8192); # old=<x> , new=<x> ; old = new
115 try( 0, 11083, 8192); # old=<x><x , new=<x> ; old > new
116 try( 0, 16384, 8192); # old=<x><x> , new=<x> ; old > new
117 try( 0, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
118 try( 0, 14126, 14126); # old=<x><x , new=<x><x ; old = new
119 try( 0, 12002, 9034); # old=<x><x , new=<x><x ; old > new
120 try( 0, 16384, 13258); # old=<x><x> , new=<x><x ; old > new
121 try( 0, 24576, 14367); # old=<x><x><x>, new=<x><x ; old > new
122 try( 0, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
123 try( 0, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
124 try( 0, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
125 try( 0, 6530, 0); # old=<x , new=0 ; old > new
126 try( 0, 8192, 0); # old=<x> , new=0 ; old > new
127 try( 0, 14707, 0); # old=<x><x , new=0 ; old > new
128 try( 0, 16384, 0); # old=<x><x> , new=0 ; old > new
129 try( 0, 24576, 0); # old=<x><x><x>, new=0 ; old > new
130 try( 0, 0, 0); # old=0 , new=0 ; old = new
132 print "# EOF tests 1\n";
133 # These tests all take place at the end of the file
134 $FLEN = 40960; # Force the file to be exactly 40960 bytes long
135 $oldfile = mkrand($FLEN);
136 try(32768, 8192, 8192); # old=<x> , new=<x ; old = new
137 try(32768, 8192, 4026); # old=<x> , new=<x ; old > new
138 try(24576, 16384, 1917); # old=<x><x> , new=<x ; old > new
139 try(16384, 24576, 3818); # old=<x><x><x>, new=<x ; old > new
140 try(32768, 8192, 8192); # old=<x> , new=<x> ; old = new
141 try(24576, 16384, 8192); # old=<x><x> , new=<x> ; old > new
142 try(16384, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new
143 try(24576, 16384, 12221); # old=<x><x> , new=<x><x ; old > new
144 try(16384, 24576, 15030); # old=<x><x><x>, new=<x><x ; old > new
145 try(24576, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new
146 try(16384, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new
147 try(16384, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new
148 try(35973, 4987, 0); # old=x> , new=0 ; old > new
149 try(32768, 8192, 0); # old=<x> , new=0 ; old > new
150 try(29932, 11028, 0); # old=x><x> , new=0 ; old > new
151 try(24576, 16384, 0); # old=<x><x> , new=0 ; old > new
152 try(16384, 24576, 0); # old=<x><x><x>, new=0 ; old > new
153 try(40960, 0, 0); # old=0 , new=0 ; old = new
155 print "# EOF tests 2\n";
156 # These tests all take place at the end of the file
157 $FLEN = 42000; # Force the file to be exactly 42000 bytes long
158 $oldfile = mkrand($FLEN);
159 try(41683, 317, 317); # old=x , new=x ; old = new
160 try(41225, 775, 405); # old=x , new=x ; old > new
161 try(35709, 6291, 284); # old=x><x , new=x ; old > new
162 try(40960, 1040, 1040); # old=<x , new=<x ; old = new
163 try(40960, 1040, 378); # old=<x , new=<x ; old > new
164 try(32768, 9232, 5604); # old=<x><x , new=<x ; old > new
165 try(39994, 2006, 966); # old=x><x , new=x> ; old > new
166 try(36725, 5275, 5275); # old=x><x , new=x><x ; old = new
167 try(37990, 4010, 3199); # old=x><x , new=x><x ; old > new
168 try(32768, 9232, 8192); # old=<x><x , new=<x> ; old > new
169 try(32768, 9232, 9232); # old=<x><x , new=<x><x ; old = new
170 try(32768, 9232, 8795); # old=<x><x , new=<x><x ; old > new
171 try(41500, 500, 0); # old=x , new=0 ; old > new
172 try(40960, 1040, 0); # old=<x , new=0 ; old > new
173 try(35272, 6728, 0); # old=x><x , new=0 ; old > new
174 try(32768, 9232, 0); # old=<x><x , new=0 ; old > new
175 try(42000, 0, 0); # old=0 , new=0 ; old = new
178 # Make sure mtwrite can properly write sequences of several intervals
179 # The intervals tested above were accumulated into @TRIES.
180 # try_all_doubles() tries every possible sensible pair of those intervals.
181 # try_all_triples() tries every possible sensible group of
182 # tree intervals from the more restrictive set @BASE_TRIES.
184 $oldfile = mkrand($FLEN);
191 my @c = ('a' .. 'z', 'A' .. 'Z', 0..9, $:);
193 $d .= $c[rand @c] until length($d) >= $len;
194 substr($d, $len) = ""; # chop it off to the proper length
199 push @TRIES, [@_] if @_ == 3;
201 open F, "> $file" or die "Couldn't open file $file: $!";
205 die "wrong length!" unless -s $file == $FLEN;
208 my $expected = $oldfile;
212 my ($s, $len, $newlen) = splice @a, -3;
213 my $newdata = $c++ x $newlen;
214 substr($expected, $s, $len, $newdata);
215 unshift @mt_args, $newdata, $s, $len;
219 my $o = tie my @lines, 'Tie::File', $file or die $!;
220 my $actual_return = $o->_mtwrite(@mt_args);
221 undef $o; untie @lines;
223 open F, "< $file" or die "Couldn't open file $file: $!";
231 my ($alen, $xlen) = (length $actual, length $expected);
232 unless ($alen == $xlen) {
233 print "# try(@_) expected file length $xlen, actual $alen!\n";
235 print $actual eq $expected ? "ok $N\n" : "not ok $N\n";
238 # if (! defined $actual_return && ! defined $expected_return) {
240 # } elsif (! defined $actual_return || ! defined $expected_return) {
241 # print "not ok $N\n";
243 # print $actual_return eq $expected_return ? "ok $N\n" : "not ok $N\n";
248 sub try_all_doubles {
249 print "# Trying double regions.\n";
251 next if $a->[0] + $a->[1] >= $FLEN;
252 next if $a->[0] + $a->[2] >= $FLEN;
254 next if $b->[0] + $b->[1] >= $FLEN;
255 next if $b->[0] + $b->[2] >= $FLEN;
257 next if $b->[0] < $a->[0] + $a->[1]; # Overlapping regions
263 sub try_all_triples {
264 print "# Trying triple regions.\n";
265 for my $a (@BASE_TRIES) {
266 next if $a->[0] + $a->[1] >= $FLEN;
267 next if $a->[0] + $a->[2] >= $FLEN;
268 for my $b (@BASE_TRIES) {
269 next if $b->[0] + $b->[1] >= $FLEN;
270 next if $b->[0] + $b->[2] >= $FLEN;
272 next if $b->[0] < $a->[0] + $a->[1]; # Overlapping regions
274 for my $c (@BASE_TRIES) {
275 next if $c->[0] + $c->[1] >= $FLEN;
276 next if $c->[0] + $c->[2] >= $FLEN;
278 next if $c->[0] < $b->[0] + $b->[1]; # Overlapping regions
293 1 while unlink $file;