subtest "void() tests" => sub {

    plan tests => 15;

    # Create a borrower

    my $categorycode = $builder->build({ source => 'Category' })->{ categorycode };

    my $branchcode   = $builder->build({ source => 'Branch' })->{ branchcode };

    my $borrower = Koha::Patron->new( {

        cardnumber => 'dariahall',

        surname => 'Hall',

        firstname => 'Daria',

    } );

    $borrower->categorycode( $categorycode );

    $borrower->branchcode( $branchcode );

    $borrower->store;

    my $account = Koha::Account->new({ patron_id => $borrower->id });

    my $line1 = Koha::Account::Line->new({ borrowernumber => $borrower->borrowernumber, amount => 10, amountoutstanding => 10 })->store();

    my $line2 = Koha::Account::Line->new({ borrowernumber => $borrower->borrowernumber, amount => 20, amountoutstanding => 20 })->store();

    is( $account->balance(), 30, "Account balance is 30" );

    is( $line1->amountoutstanding, 10, 'First fee has amount outstanding of 10' );

    is( $line2->amountoutstanding, 20, 'Second fee has amount outstanding of 20' );

    my $id = $account->pay(

        {

            lines  => [$line1, $line2],

            amount => 30,

        }

    );

    my $account_payment = Koha::Account::Lines->find( $id );

    is( $account->balance(), 0, "Account balance is 0" );

    $line1->_result->discard_changes();

    $line2->_result->discard_changes();

    is( $line1->amountoutstanding+0, 0, 'First fee has amount outstanding of 0' );

    is( $line2->amountoutstanding+0, 0, 'Second fee has amount outstanding of 0' );

    my $ret = $account_payment->void();

    is( ref($ret), 'Koha::Account::Line', 'Void returns the account line' );

    is( $account->balance(), 30, "Account balance is again 30" );

    $account_payment->_result->discard_changes();

    $line1->_result->discard_changes();

    $line2->_result->discard_changes();

    is( $account_payment->accounttype, 'Pay', 'Voided payment accounttype is still Pay' );

    is( $account_payment->status, 'VOID', 'Voided payment status is VOID' );

    is( $account_payment->amount+0, 0, 'Voided payment amount is 0' );

    is( $account_payment->amountoutstanding+0, 0, 'Voided payment amount outstanding is 0' );

    is( $line1->amountoutstanding+0, 10, 'First fee again has amount outstanding of 10' );

    is( $line2->amountoutstanding+0, 20, 'Second fee again has amount outstanding of 20' );

    # Accountlines that are not credits should be un-voidable

    my $line1_pre = $line1->unblessed();

    $ret = $line1->void();

    $line1->_result->discard_changes();

    my $line1_post = $line1->unblessed();

    is( $ret, undef, 'Attempted void on non-credit returns undef' );

    is_deeply( $line1_pre, $line1_post, 'Non-credit account line cannot be voided' )

};