$got = 
    [ { key_1 => "A", key_2 => "CC"}
    , { key_1 => "B", key_2 => "CC"}
    ]
$expected =  
    [ { key_1 => "B", key_2 => "CC"}
    , { key_1 => "A", key_2 => "CC"}
    ]

##</code><code>##

return is deeply ( $got
                   ? [ sort {$a->{key_1} cmp $b->{key_1}}
                              $got ]
                   : []
                 , $expected
                   ? [ sort {$a->{key_1} cmp $b->{key_1}}
                              $expected ]
                   : []
                 , "Test array of hashes"

##</code><code>##

$got = 
    [ { key_3 => "A", key_2 => "CC"}
    , { key_3 => "B", key_2 => "CC"}
    ]
$expected =  
    [ { key_3 => "B", key_2 => "CC"}
    , { key_3 => "A", key_2 => "CC"}
    ]

##</code><code>##

sort {$a->{key_1} cmp $b->{key_1}}

##</code><code>##

return = cmp_deeply ( $got
                      ? [ $got ]
                      : []
                    , bag ( $expected
                            ? $expected
                            : () )
                    );