It is much easier to test the three cases separately.

use strict;
use warnings;
use Test::More tests=>3;
use Regexp::Common 'RE_ALL';
my @cases = (
    [q(Now is the time), 'unquoted'],
    [q('Now is the time'), 'single quoted'],
    [q("Now is the time"), 'double quoted'],
);

foreach my $case (@cases) {

    $_ = $case->[0];
    my $string
        = /\"(.*)\"/       ? $1
        : /\'(.*)\'/       ? $1
        : /[^"'].*[^'"]/   ? $&
        :                  'No Match'
        ;
    ok($string eq 'Now is the time', "$case->[1] found $string" );
} 

C:\Users\Bill\forums\monks>perl fireblood.pl
1..3
ok 1 - unquoted found Now is the time
ok 2 - single quoted found Now is the time
ok 3 - double quoted found Now is the time
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