#!/usr/bin/perl -w
use warnings;
use strict;
use feature qw(switch say);
use English;

use Test::More  tests => 20; #'no_plan'; 
use Test::MockObject;
use Test::Output;
use Test::Trap;

my $mock = Test::MockObject->new();
$mock->fake_module ('NaServer', 
                new    => sub { return 'NaServer' },
                get_val  => sub { return 500 },
                );
use_ok( 'NaServer' )  or exit; ## includes 'use NaServer;' 

# Construction of $s just for testing
my $s = NaServer->new( 'sim8aXXXXXX', 1, 6 );
isa_ok( $s, 'NaServer');

# ==================================
# = Tests of the script start here =
# ==================================
use File::Slurp;
#my $script = 'script_to_test_with_subs.pl';  # used __DATA__ instead
my $code_to_test = do { local $/; <DATA> };
my @cases = ('A', 'B', 'C');
foreach my $case (@cases) {
    use_ok('NaServer');
    can_ok( 'NaServer', 'new');
    can_ok( 'NaServer', 'get_val');
    my @r = trap {  
        push @ARGV, $case;
        #eval read_file($script);
        eval $code_to_test; ## no critic (ProhibitStringyEval)
        if (defined $EVAL_ERROR) { die $EVAL_ERROR };
    };
    if ($trap->die) {
        croak $trap->die;
    }
    if ($trap->warn) {
        foreach (@{$trap->warn}) {
            warn $_ . "\n";
        }
    }
    like ( $trap->stdout, qr'Value\ for\ [A-Z]\ OK\ \(500\)\n', 
       "$case: stdout as expected (OK 500)" );
    like ( $trap->stderr, qr'',
       "$case: stderr as expected (emtpy)" );
    is ( $trap->exit, 0, 
       "$case: exit-value as expected (0)" );
}

__DATA__

# ==================
# = Script to Test =
# ==================

#!/usr/bin/perl -w
use warnings;
use strict;
use feature qw(switch say);
use NaServer;
use Carp;

my $dings = $ARGV[0] || 'dummydings';
my $session = NaServer->new();
my $val = $session->get_val();
if ($val > 500 ) {
    say_it ("Value for $dings to high: " . $val);
    exit 2;
} else {
    say_it ("Value for $dings OK ($val)");
    exit 0;
}

sub say_it {
    my $msg = shift;
    say $msg;
    return;
}