72 lines
1.3 KiB
Perl
72 lines
1.3 KiB
Perl
#!./perl
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# test added 29th April 1999 by Paul Johnson (pjcj@transeda.com)
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# updated 28th May 1999 by Paul Johnson
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my $File;
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BEGIN {
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$File = __FILE__;
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require strict; import strict;
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}
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use Test::More tests => 12;
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use IO::File;
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sub lineno
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{
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my ($f) = @_;
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my $l;
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$l .= "$. ";
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$l .= $f->input_line_number;
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$l .= " $."; # check $. before and after input_line_number
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$l;
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}
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my $t;
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open (F, '<', $File) or die $!;
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my $io = IO::File->new($File) or die $!;
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<F> for (1 .. 10);
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is(lineno($io), "10 0 10");
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$io->getline for (1 .. 5);
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is(lineno($io), "5 5 5");
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<F>;
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is(lineno($io), "11 5 11");
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$io->getline;
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is(lineno($io), "6 6 6");
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$t = tell F; # tell F; provokes a warning
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is(lineno($io), "11 6 11");
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<F>;
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is(lineno($io), "12 6 12");
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select F;
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is(lineno($io), "12 6 12");
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<F> for (1 .. 10);
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is(lineno($io), "22 6 22");
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$io->getline for (1 .. 5);
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is(lineno($io), "11 11 11");
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$t = tell F;
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# We used to have problems here before local $. worked.
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# input_line_number() used to use select and tell. When we did the
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# same, that mechanism brise. It should work now.
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is(lineno($io), "22 11 22");
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{
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local $.;
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$io->getline for (1 .. 5);
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is(lineno($io), "16 16 16");
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}
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is(lineno($io), "22 16 22");
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