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operation_tests.cpp: Implement cover_with_collateral_test

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theoreticalbts 2015-07-16 13:49:24 -04:00
parent 3cdcf5139f
commit c527b2d41e
1 changed files with 80 additions and 6 deletions
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86
tests/tests/operation_tests.cpp
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@ -18,9 +18,11 @@
#include <boost/test/unit_test.hpp>
#include <graphene/chain/database.hpp>
#include <graphene/chain/exceptions.hpp>
#include <graphene/chain/account_object.hpp>
#include <graphene/chain/asset_object.hpp>
#include <graphene/chain/database.hpp>
#include <graphene/chain/committee_member_object.hpp>
#include <graphene/chain/market_evaluator.hpp>
#include <graphene/chain/vesting_balance_object.hpp>
@ -1227,13 +1229,85 @@ BOOST_AUTO_TEST_CASE( unimp_burn_asset_test )
/**
* This test demonstrates how using the call_order_update_operation to
* increase the maintenance collateral ratio above the current market
* price, perhaps setting it to infinity.
* trigger a margin call is legal if there is a matching order.
*/
BOOST_AUTO_TEST_CASE_EXPECTED_FAILURES( unimp_cover_with_collateral_test, 1 )
BOOST_AUTO_TEST_CASE( unimp_cover_with_collateral_test )
BOOST_AUTO_TEST_CASE( cover_with_collateral_test )
{
BOOST_FAIL( "not implemented" );
try
{
ACTORS((alice)(bob)(sam));
const auto& bitusd = create_bitasset("BITUSD");
const auto& core = asset_id_type()(db);
BOOST_TEST_MESSAGE( "Setting price feed to $0.02 / 100" );
transfer(committee_account, alice_id, asset(10000000));
update_feed_producers( bitusd, {sam.id} );
price_feed current_feed;
current_feed.settlement_price = bitusd.amount( 2 ) / core.amount(100);
publish_feed( bitusd, sam, current_feed );
BOOST_REQUIRE( bitusd.bitasset_data(db).current_feed.settlement_price == current_feed.settlement_price );
BOOST_TEST_MESSAGE( "Alice borrows some BitUSD at 2x collateral and gives it to Bob" );
const call_order_object* call_order = borrow( alice, bitusd.amount(100), asset(10000) );
BOOST_REQUIRE( call_order != nullptr );
// wdump( (*call_order) );
transfer( alice_id, bob_id, bitusd.amount(100) );
auto update_call_order = [&]( account_id_type acct, asset delta_collateral, asset delta_debt )
{
call_order_update_operation op;
op.funding_account = acct;
op.delta_collateral = delta_collateral;
op.delta_debt = delta_debt;
transaction tx;
tx.operations.push_back( op );
tx.set_expiration( db.head_block_time() + fc::minutes(5) );
db.push_transaction( tx, database::skip_authority_check | database::skip_tapos_check | database::skip_transaction_signatures );
} ;
// margin call requirement: 1.75x
BOOST_TEST_MESSAGE( "Alice decreases her collateral to maint level plus one satoshi" );
asset delta_collateral = asset(int64_t( current_feed.maintenance_collateral_ratio ) * 5000 / GRAPHENE_COLLATERAL_RATIO_DENOM - 10000 + 1 );
update_call_order( alice_id, delta_collateral, bitusd.amount(0) );
// wdump( (*call_order) );
BOOST_TEST_MESSAGE( "Alice cannot decrease her collateral by one satoshi, there is no buyer" );
GRAPHENE_REQUIRE_THROW( update_call_order( alice_id, asset(-1), bitusd.amount(0) ), call_order_update_unfilled_margin_call );
// wdump( (*call_order) );
BOOST_TEST_MESSAGE( "Bob offers to sell most of the BitUSD at the feed" );
const limit_order_object* order = create_sell_order( bob_id, bitusd.amount(99), asset(4950) );
BOOST_REQUIRE( order != nullptr );
limit_order_id_type order1_id = order->id;
BOOST_CHECK_EQUAL( order->for_sale.value, 99 );
// wdump( (*call_order) );
BOOST_TEST_MESSAGE( "Alice still cannot decrease her collateral to maint level" );
GRAPHENE_REQUIRE_THROW( update_call_order( alice_id, asset(-1), bitusd.amount(0) ), call_order_update_unfilled_margin_call );
// wdump( (*call_order) );
BOOST_TEST_MESSAGE( "Bob offers to sell the last of his BitUSD in another order" );
order = create_sell_order( bob_id, bitusd.amount(1), asset(50) );
BOOST_REQUIRE( order != nullptr );
limit_order_id_type order2_id = order->id;
BOOST_CHECK_EQUAL( order->for_sale.value, 1 );
// wdump( (*call_order) );
BOOST_TEST_MESSAGE( "Alice decreases her collateral to maint level and Bob's orders fill" );
update_call_order( alice_id, asset(-1), bitusd.amount(0) );
BOOST_CHECK( db.find( order1_id ) == nullptr );
BOOST_CHECK( db.find( order2_id ) == nullptr );
}
catch (fc::exception& e)
{
edump((e.to_detail_string()));
throw;
}
}
BOOST_AUTO_TEST_CASE_EXPECTED_FAILURES( unimp_bulk_discount_test, 1 )