is_deeply( complex_structure, expected_complex_structure, name);

---

Compare two Perl data structures:

examples/test-more/t/is_deeply.t

use strict;
use warnings;

use Test::More tests => 11;

use MyTools qw(fibo fibonacci);

is fibo(0), 0;
is fibo(1), 1;
is fibo(2), 1;
is fibo(3), 2;
is fibo(4), 3;
is fibo(5), 5;

is_deeply fibonacci(1), [0, 1],              'fibs 1';
is_deeply fibonacci(2), [0, 1, 1],           'fibs 2';
is_deeply fibonacci(3), [0, 1, 1, 2],        'fibs 3';
is_deeply fibonacci(4), [0, 1, 1, 2, 3],     'fibs 4';
is_deeply fibonacci(5), [0, 1, 1, 2, 3, 5],  'fibs 5';

#   Failed test 'fibs 4'
#   at t/is_deeply.t line 20.
#     Structures begin differing at:
#          $got->[3] = '4'
#     $expected->[3] = '2'
# Looks like you failed 1 test of 11.
t/is_deeply.t .. 
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/11 subtests 

Test Summary Report
-------------------
t/is_deeply.t (Wstat: 256 Tests: 11 Failed: 1)
  Failed test:  10
  Non-zero exit status: 1
Files=1, Tests=11,  0 wallclock secs ( 0.01 usr  0.00 sys +  0.13 cusr  0.01 csys =  0.15 CPU)
Result: FAIL