Let's pretend we have an object: 
my $o = bless { x => bless ['y'], 'My::Value' }, 'My::Class';

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I want to verify that the object when cursed recursively will consist of 

{ x => [$v], # where $v is 'y' or 'z'
  a => 'b' } # if a exists at all

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I thought Test::Deep's noclass should be able to tell me. 

cmp_deeply $o, noclass(subhashof({ a => 'b', x => subbagof('y', 'z') }
+));

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But it doesn't work: 

#   Failed test at ...
# Comparing $data->{"x"} as a SubBag
# got    : My::Value=ARRAY(0x561fbd1fe3a8)
# expect : An array to use as a Bag

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Without an object, it works nicely: 

cmp_deeply { x => ['y'] },
           subhashof({ a => 'b', x => subbagof('y', 'z') });

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I asked about it in #freenode and was pointed towards Test2::Tools::Compare. It was the first time I played with it, so maybe my code is a bit clumsy, but I was able to write a test that passes: 

use Test2::Tools::Compare qw{ like hash item field in_set DNE bag };

my $o = bless { x => bless ['y'], 'My::Value' }, 'My::Class';


like({ x => ['y'] },
     hash { field a => in_set(DNE(), 'b');
            field x => bag { item in_set('y', 'z') };
     }
);

like $o, hash { field a => in_set(DNE(), 'b');
                field x => [ in_set('y', 'z') ];
         };

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How to do the comparison with Test::Deep? I tried adding another noclass to the value, or even noclass(useclass(...)), but it always failed similarly.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Test::Deep::noclass propagation by choroba

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