limit_order_id_type trigger_swan(share_type amount1, share_type amount2) {
set_expiration( db, trx );
// starting out with price 1:1
set_feed( 1, 1 );
// start out with 2:1 collateral
borrow(borrower(), swan().amount(amount1), back().amount(2*amount1));
borrow(borrower2(), swan().amount(amount2), back().amount(4*amount2));
FC_ASSERT( get_balance(borrower(), swan()) == amount1 );
FC_ASSERT( get_balance(borrower2(), swan()) == amount2 );
FC_ASSERT( get_balance(borrower() , back()) == init_balance - 2*amount1 );
FC_ASSERT( get_balance(borrower2(), back()) == init_balance - 4*amount2 );
set_feed( 1, 2 );
// this sell order is designed to trigger a black swan
limit_order_id_type oid = create_sell_order( borrower2(), swan().amount(1), back().amount(3) )->id;
FC_ASSERT( get_balance(borrower(), swan()) == amount1 );
FC_ASSERT( get_balance(borrower2(), swan()) == amount2 - 1 );
FC_ASSERT( get_balance(borrower() , back()) == init_balance - 2*amount1 );
FC_ASSERT( get_balance(borrower2(), back()) == init_balance - 2*amount2 );
BOOST_CHECK( swan().bitasset_data(db).has_settlement() );
return oid;
}
void pending_chain_state::get_undo_state( const chain_interface_ptr& undo_state_arg )const
{
auto undo_state = std::dynamic_pointer_cast<pending_chain_state>( undo_state_arg );
chain_interface_ptr prev_state = _prev_state.lock();
FC_ASSERT( prev_state );
for( const auto& item : properties )
{
auto prev_value = prev_state->get_property( (chain_property_enum)item.first );
undo_state->set_property( (chain_property_enum)item.first, prev_value );
}
for( const auto& item : assets )
{
auto prev_value = prev_state->get_asset_record( item.first );
if( !!prev_value ) undo_state->store_asset_record( *prev_value );
else undo_state->store_asset_record( item.second.make_null() );
}
for( const auto& item : slates )
{
auto prev_value = prev_state->get_delegate_slate( item.first );
if( prev_value ) undo_state->store_delegate_slate( item.first, *prev_value );
else undo_state->store_delegate_slate( item.first, delegate_slate() );
}
for( const auto& item : accounts )
{
auto prev_value = prev_state->get_account_record( item.first );
if( !!prev_value ) undo_state->store_account_record( *prev_value );
else undo_state->store_account_record( item.second.make_null() );
}
#if 0
for( const auto& item : proposals )
{
auto prev_value = prev_state->get_proposal_record( item.first );
if( !!prev_value ) undo_state->store_proposal_record( *prev_value );
else undo_state->store_proposal_record( item.second.make_null() );
}
for( const auto& item : proposal_votes )
{
auto prev_value = prev_state->get_proposal_vote( item.first );
if( !!prev_value ) undo_state->store_proposal_vote( *prev_value );
else { undo_state->store_proposal_vote( item.second.make_null() ); }
}
#endif
for( const auto& item : balances )
{
auto prev_value = prev_state->get_balance_record( item.first );
if( !!prev_value ) undo_state->store_balance_record( *prev_value );
else undo_state->store_balance_record( item.second.make_null() );
}
for( const auto& item : transactions )
{
auto prev_value = prev_state->get_transaction( item.first );
if( !!prev_value ) undo_state->store_transaction( item.first, *prev_value );
else undo_state->store_transaction( item.first, transaction_record() );
}
for( const auto& item : bids )
{
auto prev_value = prev_state->get_bid_record( item.first );
if( prev_value.valid() ) undo_state->store_bid_record( item.first, *prev_value );
else undo_state->store_bid_record( item.first, order_record() );
}
for( const auto& item : asks )
{
auto prev_value = prev_state->get_ask_record( item.first );
if( prev_value.valid() ) undo_state->store_ask_record( item.first, *prev_value );
else undo_state->store_ask_record( item.first, order_record() );
}
for( const auto& item : shorts )
{
auto prev_value = prev_state->get_short_record( item.first );
if( prev_value.valid() ) undo_state->store_short_record( item.first, *prev_value );
else undo_state->store_short_record( item.first, order_record() );
}
for( const auto& item : collateral )
{
auto prev_value = prev_state->get_collateral_record( item.first );
if( prev_value.valid() ) undo_state->store_collateral_record( item.first, *prev_value );
else undo_state->store_collateral_record( item.first, collateral_record() );
}
for( const auto& item : slots )
{
auto prev_value = prev_state->get_slot_record( item.first );
if( prev_value ) undo_state->store_slot_record( *prev_value );
else
{
slot_record invalid_slot_record;
invalid_slot_record.start_time = item.first;
invalid_slot_record.block_produced = true;
invalid_slot_record.block_id = block_id_type();
undo_state->store_slot_record( invalid_slot_record );
}
}
for( const auto& item : market_statuses )
{
auto prev_value = prev_state->get_market_status( item.first.first, item.first.second );
if( prev_value ) undo_state->store_market_status( *prev_value );
else
{
undo_state->store_market_status( market_status() );
}
}
for( const auto& item : feeds )
{
auto prev_value = prev_state->get_feed( item.first );
if( prev_value ) undo_state->set_feed( *prev_value );
else undo_state->set_feed( feed_record{item.first} );
}
for( const auto& item : burns )
{
undo_state->store_burn_record( burn_record( item.first ) );
}
const auto dirty_markets = prev_state->get_dirty_markets();
undo_state->set_dirty_markets(dirty_markets);
/* NOTE: Recent operations are currently not rewound on undo */
}
