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|
#!/usr/bin/perl
#
# Check PUSH, POP, SHIFT, and UNSHIFT
#
# Each call to 'check_contents' actually performs two tests.
# First, it calls the tied object's own 'check_integrity' method,
# which makes sure that the contents of the read cache and offset tables
# accurately reflect the contents of the file.
# Then, it checks the actual contents of the file against the expected
# contents.
use POSIX 'SEEK_SET';
my $file = "tf$$.txt";
1 while unlink $file;
$: = Tie::File::_default_recsep();
my $data = "rec0$:rec1$:rec2$:";
print "1..38\n";
my $N = 1;
use Tie::File;
print "ok $N\n"; $N++; # partial credit just for showing up
my $o = tie @a, 'Tie::File', $file;
print $o ? "ok $N\n" : "not ok $N\n";
$N++;
my ($n, @r);
# (3-11) PUSH tests
$n = push @a, "rec0", "rec1", "rec2";
check_contents($data);
print $n == 3 ? "ok $N\n" : "not ok $N # size is $n, should be 3\n";
$N++;
$n = push @a, "rec3", "rec4$:";
check_contents("$ {data}rec3$:rec4$:");
print $n == 5 ? "ok $N\n" : "not ok $N # size is $n, should be 5\n";
$N++;
# Trivial push
$n = push @a, ();
check_contents("$ {data}rec3$:rec4$:");
print $n == 5 ? "ok $N\n" : "not ok $N # size is $n, should be 5\n";
$N++;
# (12-20) POP tests
$n = pop @a;
check_contents("$ {data}rec3$:");
print $n eq "rec4$:" ? "ok $N\n" : "not ok $N # last rec is $n, should be rec4\n";
$N++;
# Presumably we have already tested this to death
splice(@a, 1, 3);
$n = pop @a;
check_contents("");
print $n eq "rec0$:" ? "ok $N\n" : "not ok $N # last rec is $n, should be rec0\n";
$N++;
$n = pop @a;
check_contents("");
print ! defined $n ? "ok $N\n" : "not ok $N # last rec should be undef, is $n\n";
$N++;
# (21-29) UNSHIFT tests
$n = unshift @a, "rec0", "rec1", "rec2";
check_contents($data);
print $n == 3 ? "ok $N\n" : "not ok $N # size is $n, should be 3\n";
$N++;
$n = unshift @a, "rec3", "rec4$:";
check_contents("rec3$:rec4$:$data");
print $n == 5 ? "ok $N\n" : "not ok $N # size is $n, should be 5\n";
$N++;
# Trivial unshift
$n = unshift @a, ();
check_contents("rec3$:rec4$:$data");
print $n == 5 ? "ok $N\n" : "not ok $N # size is $n, should be 5\n";
$N++;
# (30-38) SHIFT tests
$n = shift @a;
check_contents("rec4$:$data");
print $n eq "rec3$:" ? "ok $N\n" : "not ok $N # last rec is $n, should be rec3\n";
$N++;
# Presumably we have already tested this to death
splice(@a, 1, 3);
$n = shift @a;
check_contents("");
print $n eq "rec4$:" ? "ok $N\n" : "not ok $N # last rec is $n, should be rec4\n";
$N++;
$n = shift @a;
check_contents("");
print ! defined $n ? "ok $N\n" : "not ok $N # last rec should be undef, is $n\n";
$N++;
sub check_contents {
my $x = shift;
my $integrity = $o->_check_integrity($file, $ENV{INTEGRITY});
print $integrity ? "ok $N\n" : "not ok $N\n";
$N++;
local *FH = $o->{fh};
seek FH, 0, SEEK_SET;
my $a;
{ local $/; $a = <FH> }
$a = "" unless defined $a;
if ($a eq $x) {
print "ok $N\n";
} else {
ctrlfix(my $msg = "# expected <$x>, got <$a>");
print "not ok $N\n$msg\n";
}
$N++;
}
sub ctrlfix {
for (@_) {
s/\n/\\n/g;
s/\r/\\r/g;
}
}
END {
undef $o;
untie @a;
1 while unlink $file;
}
|
