6.17. Early Abnormal Exit

#!/usr/bin/perl 
use strict;
use warnings;

# example of tests where the script dies before running all the tests

use Test::More tests => 4;

is `./mycalc 1 + 1`, 2, '1+1';
is `./mycalc 2 + 2`, 4, '2+2';
exit;
is `./mycalc 3 + 3`, 6, '3+3';
is `./mycalc 4 + 4`, 8, '4+4';

Directly:

1..4
ok 1 - 1+1
ok 2 - 2+2
# Looks like you planned 4 tests but only ran 2.

With Harness:

early-abnormal-exit....ok 2/4# Looks like you planned 4 tests but only ran 2.
early-abnormal-exit....dubious                                               
    Test returned status 2 (wstat 512, 0x200)
DIED. FAILED tests 3-4
    Failed 2/4 tests, 50.00% okay
Failed Test           Stat Wstat Total Fail  Failed  List of Failed
----------------------------
early-abnormal-exit.t    2   512     4    4 100.00%  3-4
Failed 1/1 test scripts, 0.00% okay. 2/4 subtests failed, 50.00% okay.