t/io/inplace.t


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#!./perl
use strict;
require './test.pl';

$^I = $^O eq 'VMS' ? '_bak' : '.bak';

plan( tests => 2 );

my @tfiles     = (tempfile(), tempfile(), tempfile());
my @tfiles_bak = map "$_$^I", @tfiles;

END { unlink_all(@tfiles_bak); }

for my $file (@tfiles) {
    runperl( prog => 'print qq(foo\n);', 
             args => ['>', $file] );
}

@ARGV = @tfiles;

while (<>) {
    s/foo/bar/;
}
continue {
    print;
}

is ( runperl( prog => 'print<>;', args => \@tfiles ), 
     "bar\nbar\nbar\n", 
     "file contents properly replaced" );

is ( runperl( prog => 'print<>;', args => \@tfiles_bak ), 
     "foo\nfoo\nfoo\n", 
     "backup file contents stay the same" );