1#!/usr/bin/perl
2#
3# Unit tests of _upcopy function
4#
5# _upcopy($self, $source, $dest, $len)
6#
7# Take a block of data of leength $len at $source and copy it
8# to $dest, which must be <= $source but which need not be <= $source - $len
9# (That is, this will only copy a block to a position earlier in the file,
10# but the source and destination regions may overlap.)
11
12
13my $file = "tf$$.txt";
14
15print "1..55\n";
16
17my $N = 1;
18use Tie::File;
19print "ok $N\n"; $N++;
20
21$: = Tie::File::_default_recsep();
22
23my @subtests = qw(x <x x> x><x <x> <x><x x><x> <x><x> <x><x><x> 0);
24
25$FLEN = 40970;  # 2410 records of 17 chars each
26
27# (2-7) Trivial non-moves at start of file
28try(0, 0, 0);
29try(0, 0, 10);
30try(0, 0, 100);
31try(0, 0, 1000);
32try(0, 0, 10000);
33try(0, 0, 20000);
34
35# (8-13) Trivial non-moves in middle of file
36try(100, 100, 0);
37try(100, 100, 10);
38try(100, 100, 100);
39try(100, 100, 1000);
40try(100, 100, 10000);
41try(100, 100, 20000);
42
43# (14) Trivial non-move at end of file
44try($FLEN, $FLEN, 0);
45
46# (15-17) Trivial non-move of tail of file
47try(0, 0, undef);
48try(100, 100, undef);
49try($FLEN, $FLEN, undef);
50
51# (18-24) Moves to start of file
52try(100, 0, 0);
53try(100, 0, 10);
54try(100, 0, 100);
55try(100, 0, 1000);
56try(100, 0, 10000);
57try(100, 0, 20000);
58try(100, 0, undef);
59
60# (25-31) Moves in middle of file
61try(200, 100, 0);
62try(200, 100, 10);
63try(200, 100, 100);
64try(200, 100, 1000);
65try(200, 100, 10000);
66try(200, 100, 20000);
67try(200, 100, undef);
68
69# (32-43) Moves from end of file
70try($FLEN, 10000, 0);
71try($FLEN-10, 10000, 10);
72try($FLEN-100, 10000, 100);
73try($FLEN-1000, 200, 1000);
74try($FLEN-10000, 200, 10000);
75try($FLEN-20000, 200, 20000);
76try($FLEN, 10000, undef);
77try($FLEN-10, 10000, undef);
78try($FLEN-100, 10000, undef);
79try($FLEN-1000, 200, undef);
80try($FLEN-10000, 200, undef);
81try($FLEN-20000, 200, undef);
82
83$FLEN = 40960;
84
85# (44-55) Moves from end of file when file ends on a block boundary
86try($FLEN, 10000, 0);
87try($FLEN-10, 10000, 10);
88try($FLEN-100, 10000, 100);
89try($FLEN-1000, 200, 1000);
90try($FLEN-10000, 200, 10000);
91try($FLEN-20000, 200, 20000);
92try($FLEN, 10000, undef);
93try($FLEN-10, 10000, undef);
94try($FLEN-100, 10000, undef);
95try($FLEN-1000, 200, undef);
96try($FLEN-10000, 200, undef);
97try($FLEN-20000, 200, undef);
98
99sub try {
100  my ($src, $dst, $len) = @_;
101  open F, '>', $file or die "Couldn't open file $file: $!";
102  binmode F;
103
104  # The record has exactly 17 characters.  This will help ensure that
105  # even if _upcopy screws up, the data doesn't coincidentally
106  # look good because the remainder accidentally lines up.
107  my $d = substr("0123456789abcdef$:", -17);
108  my $recs = defined($FLEN) ?
109    int($FLEN/length($d))+1 : # enough to make up at least $FLEN
110    int(8192*5/length($d))+1; # at least 5 blocks' worth
111  my $oldfile = $d x $recs;
112  my $flen = defined($FLEN) ? $FLEN : $recs * 17;
113  substr($oldfile, $FLEN) = "" if defined $FLEN;  # truncate
114  print F $oldfile;
115  close F;
116
117  die "wrong length!" unless -s $file == $flen;
118
119  # If len is specified, use that.  If it's undef,
120  # then behave *as if* we had specified the whole rest of the file
121  my $expected = $oldfile;
122  if (defined $len) {
123    substr($expected, $dst, $len) = substr($expected, $src, $len);
124  } else {
125    substr($expected, $dst) = substr($expected, $src);
126  }
127
128  my $o = tie my @lines, 'Tie::File', $file or die $!;
129  local $SIG{ALRM} = sub { die "Alarm clock" };
130  my $a_retval = eval { alarm(5) unless $^P; $o->_upcopy($src, $dst, $len) };
131  my $err = $@;
132  undef $o; untie @lines; alarm(0);
133  if ($err) {
134    if ($err =~ /^Alarm clock/) {
135      print "# Timeout\n";
136      print "not ok $N\n"; $N++;
137      return;
138    } else {
139      $@ = $err;
140      die;
141    }
142  }
143
144  open F, '<', $file or die "Couldn't open file $file: $!";
145  binmode F;
146  my $actual;
147  { local $/;
148    $actual = <F>;
149  }
150  close F;
151
152  my ($alen, $xlen) = (length $actual, length $expected);
153  unless ($alen == $xlen) {
154    print "# try(@_) expected file length $xlen, actual $alen!\n";
155  }
156  print $actual eq $expected ? "ok $N\n" : "not ok $N\n";
157  $N++;
158}
159
160
161
162use POSIX 'SEEK_SET';
163sub check_contents {
164  my @c = @_;
165  my $x = join $:, @c, '';
166  local *FH = $o->{fh};
167  seek FH, 0, SEEK_SET;
168#  my $open = open FH, '<', $file;
169  my $a;
170  { local $/; $a = <FH> }
171  $a = "" unless defined $a;
172  if ($a eq $x) {
173    print "ok $N\n";
174  } else {
175    ctrlfix($a, $x);
176    print "not ok $N\n# expected <$x>, got <$a>\n";
177  }
178  $N++;
179
180  # now check FETCH:
181  my $good = 1;
182  my $msg;
183  for (0.. $#c) {
184    my $aa = $a[$_];
185    unless ($aa eq "$c[$_]$:") {
186      $msg = "expected <$c[$_]$:>, got <$aa>";
187      ctrlfix($msg);
188      $good = 0;
189    }
190  }
191  print $good ? "ok $N\n" : "not ok $N # $msg\n";
192  $N++;
193
194  print $o->_check_integrity($file, $ENV{INTEGRITY})
195      ? "ok $N\n" : "not ok $N\n";
196  $N++;
197}
198
199sub ctrlfix {
200  for (@_) {
201    s/\n/\\n/g;
202    s/\r/\\r/g;
203  }
204}
205
206END {
207  undef $o;
208  untie @a;
209  1 while unlink $file;
210}
211
212