use strict; use warnings; use Test::More; use Test::Fatal; =pod This tests to make sure that we provide the same error messages from an immutable constructor as is provided by a non-immutable constructor. =cut { package Foo; use Moose; has 'foo' => (is => 'rw', isa => 'Int'); Foo->meta->make_immutable(debug => 0); } my $scalar = 1; like( exception { Foo->new($scalar) }, qr/\QSingle parameters to new() must be a HASH ref/, 'Non-ref provided to immutable constructor gives useful error message' ); like( exception { Foo->new(\$scalar) }, qr/\QSingle parameters to new() must be a HASH ref/, 'Scalar ref provided to immutable constructor gives useful error message' ); like( exception { Foo->new(undef) }, qr/\QSingle parameters to new() must be a HASH ref/, 'undef provided to immutable constructor gives useful error message' ); done_testing;