Test::NoWarnings

---

examples/test-warn/t/test_nowarnings.t

use strict;
use warnings;

use Test::More;
use Test::NoWarnings;

use MyTools qw(add);

plan tests => 4 + 1;

is(add(1, 2), 3,   'first');
is(add(2), 2,      'second');
is(add(3), 3,      'third');
is(add(-1, 1), 0,  'fourth');

prove -v t/test_nowarnings.t

#   Failed test 'no warnings'
#   at /home/gabor/perl5/lib/perl5/Test/Builder.pm line 193.
# There were 2 warning(s)
# 	Previous test 1 'first'
# 	Use of uninitialized value $y in addition (+) at /home/gabor/work/slides/perl/examples/test-warn/lib/MyTools.pm line 31.
#  at /home/gabor/work/slides/perl/examples/test-warn/lib/MyTools.pm line 31.
# 	MyTools::add(2) called at t/test_nowarnings.t line 12
# 
# ----------
# 	Previous test 2 'second'
# 	Use of uninitialized value $y in addition (+) at /home/gabor/work/slides/perl/examples/test-warn/lib/MyTools.pm line 31.
#  at /home/gabor/work/slides/perl/examples/test-warn/lib/MyTools.pm line 31.
# 	MyTools::add(3) called at t/test_nowarnings.t line 13
# 
# Looks like you failed 1 test of 5.
t/test_nowarnings.t .. 
1..5
ok 1 - first
ok 2 - second
ok 3 - third
ok 4 - fourth
not ok 5 - no warnings
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/5 subtests 

Test Summary Report
-------------------
t/test_nowarnings.t (Wstat: 256 Tests: 5 Failed: 1)
  Failed test:  5
  Non-zero exit status: 1
Files=1, Tests=5,  1 wallclock secs ( 0.01 usr  0.00 sys +  0.18 cusr  0.00 csys =  0.19 CPU)
Result: FAIL