def test_auction_simulation(chain, web3, owner, get_bidders, auction_contract,
token_contract, contract_params,
auction_bid_tested, auction_end_tests,
auction_post_distributed_tests,
auction_claim_tokens_tested, create_accounts,
txnCost, event_handler):
eth = web3.eth
auction = auction_contract
ev_handler = event_handler(auction)
bidders = get_bidders(12)
# Initialize token
token = token_contract(auction.address)
# Initial Auction state
assert auction.call().stage() == 0 # AuctionDeployed
assert eth.getBalance(auction.address) == 0
assert auction.call().received_wei() == 0
# Auction setup without being the owner should fail
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': bidders[1]}).setup(token.address)
txn_hash = auction.transact({'from': owner}).setup(token.address)
ev_handler.add(txn_hash, 'Setup')
assert auction.call().stage() == 1 # AuctionSetUp
token_multiplier = auction.call().token_multiplier()
# We want to revert to these, because we set them in the fixtures
initial_args = [
auction.call().price_start(),
auction.call().price_constant(),
auction.call().price_exponent()
]
# changeSettings is a private method
with pytest.raises(ValueError):
auction.transact({'from': owner}).changeSettings(1000, 556, 322)
# startAuction without being the owner should fail
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': bidders[1]}).startAuction()
auction.transact({'from': owner}).startAuction()
assert auction.call().stage() == 2 # AuctionStarted
# transferFundsToToken should fail (private)
with pytest.raises(ValueError):
auction.transact({'from': bidders[1]}).transferFundsToToken()
# finalizeAuction should fail (missing funds not 0)
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': bidders[1]}).finalizeAuction()
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': owner}).finalizeAuction()
# Set maximum amount for a bid - we don't want 1 account draining the auction
missing_funds = auction.call().missingFundsToEndAuction()
maxBid = missing_funds / 4
# TODO Test multiple orders from 1 buyer
# Bidders start ordering tokens
bidders_len = len(bidders) - 1
bidded = 0 # Total bidded amount
index = 0 # bidders index
# Make some bids with 1 wei to be sure we test rounding errors
txn_hash = auction_bid_tested(auction, bidders[0], 1)
ev_handler.add(txn_hash, 'BidSubmission',
checkBidEvent(bidders[0], 1, missing_funds))
missing_funds = auction.call().missingFundsToEndAuction()
txn_hash = auction_bid_tested(auction, bidders[1], 1)
ev_handler.add(txn_hash, 'BidSubmission',
checkBidEvent(bidders[1], 1, missing_funds))
index = 2
bidded = 2
approx_bid_txn_cost = 4000000
while auction.call().missingFundsToEndAuction() > 0:
if bidders_len < index:
new_account = create_accounts(1)[0]
bidders.append(new_account)
bidders_len += 1
print('Creating 1 additional bidder account', new_account)
bidder = bidders[index]
bidder_balance = eth.getBalance(bidder)
assert auction.call().bids(bidder) == 0
missing_funds = auction.call().missingFundsToEndAuction()
amount = int(min(bidder_balance - approx_bid_txn_cost, maxBid))
if amount <= missing_funds:
txn_hash = auction.transact({
'from': bidder,
"value": amount
}).bid()
else:
# Fail if we bid more than missing_funds
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': bidder, "value": amount}).bid()
# Bid exactly the amount needed in order to end the auction
amount = missing_funds
txn_hash = auction.transact({
'from': bidder,
"value": amount
}).bid()
assert auction.call().bids(bidder) == amount
ev_handler.add(txn_hash, 'BidSubmission',
checkBidEvent(bidder, amount, missing_funds))
txn_cost = txnCost(txn_hash)
post_balance = bidder_balance - amount - txn_cost
bidded += min(amount, missing_funds)
assert eth.getBalance(bidder) == post_balance
index += 1
print('NO OF BIDDERS', index)
# Auction ended, no more orders possible
if bidders_len < index:
print(
'!! Not enough accounts to simulate bidders. 1 additional account needed'
)
# Finalize Auction
txn_hash = auction.transact({'from': owner}).finalizeAuction()
# Final price per TKN (Tei * token_multiplier)
final_price = auction.call().final_price()
# Make sure events are issued correctly
ev_handler.add(txn_hash, 'AuctionEnded',
checkAuctionEndedEvent(final_price))
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': owner}).finalizeAuction()
assert auction.call().received_wei() == bidded
auction_end_tests(auction, bidders[index])
# Claim all tokens
funds_at_price = auction.call().num_tokens_auctioned(
) * final_price // token_multiplier
received_wei = auction.call().received_wei()
# FIXME sometimes: assert 5000000002 == 5000000000
assert received_wei == funds_at_price
# Total Tei claimable
total_tokens_claimable = auction.call().received_wei(
) * token_multiplier // final_price
print('FINAL PRICE', final_price)
print('TOTAL TOKENS CLAIMABLE', int(total_tokens_claimable))
# FIXME assert 5000000002000000000000000 == 5000000000000000000000000
assert int(total_tokens_claimable) == auction.call().num_tokens_auctioned()
rounding_error_tokens = 0
end_time = auction.call().end_time()
elapsed = auction.call().token_claim_waiting_period()
claim_ok_timestamp = end_time + elapsed + 1
# We cannot claim tokens before waiting period has passed
if claim_ok_timestamp > web3.eth.getBlock('latest')['timestamp']:
with pytest.raises(tester.TransactionFailed):
auction_claim_tokens_tested(token, auction, bidders[0])
# Simulate time travel
web3.testing.timeTravel(claim_ok_timestamp)
for i in range(0, index):
bidder = bidders[i]
tokens_expected = token_multiplier * auction.call().bids(
bidder) // final_price
txn_hash = auction_claim_tokens_tested(token, auction, bidder)
ev_handler.add(txn_hash, 'ClaimedTokens',
checkClaimedTokensEvent(bidder, tokens_expected))
# If auction funds not transferred to owner (last claimTokens)
# we test for a correct claimed tokens calculation
balance_auction = auction.call().received_wei()
if balance_auction > 0:
# Auction supply = unclaimed tokens, including rounding errors
unclaimed_token_supply = token.call().balanceOf(auction.address)
# Calculated unclaimed tokens
unclaimed_funds = balance_auction - auction.call().funds_claimed()
unclaimed_tokens = token_multiplier * unclaimed_funds // auction.call(
).final_price()
# Adding previous rounding errors
unclaimed_tokens += rounding_error_tokens
# Token's auction balance should be the same as
# the unclaimed tokens calculation based on the final_price
# We assume a rounding error of 1
if unclaimed_token_supply != unclaimed_tokens:
rounding_error_tokens += 1
unclaimed_tokens += 1
# FIXME assert 4999999999000000000000000 == 5000000001000000000000001
assert unclaimed_token_supply == unclaimed_tokens
# Auction balance might be > 0 due to rounding errors
assert token.call().balanceOf(auction.address) == rounding_error_tokens
print('FINAL UNCLAIMED TOKENS', rounding_error_tokens)
# Last claimTokens also triggers a TokensDistributed event
ev_handler.add(txn_hash, 'TokensDistributed')
auction_post_distributed_tests(auction)
# Check if all registered events have been triggered
ev_handler.check()
def test_auction_bid(chain, web3, owner, wallet_address, get_bidders,
auction_contract_fast_decline, token_contract,
contract_params, txnCost, auction_end_tests,
auction_claim_tokens_tested, event_handler):
eth = web3.eth
auction = auction_contract_fast_decline
ev_handler = event_handler(auction)
(A, B) = get_bidders(2)
# Initialize token
token = token_contract(auction.address)
# Try sending funds before auction starts
with pytest.raises(tester.TransactionFailed):
eth.sendTransaction({'from': A, 'to': auction.address, 'value': 100})
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': A, "value": 100}).bid()
txn_hash = auction.transact({'from': owner}).setup(token.address)
ev_handler.add(txn_hash, 'Setup')
token_multiplier = auction.call().token_multiplier()
txn_hash = auction.transact({'from': owner}).startAuction()
ev_handler.add(txn_hash, 'AuctionStarted')
missing_funds = auction.call().missingFundsToEndAuction()
# Test fallback function
# 76116 gas cost
txn_hash = eth.sendTransaction({
'from': A,
'to': auction.address,
'value': 100
})
ev_handler.add(txn_hash, 'BidSubmission',
checkBidEvent(A, 100, missing_funds))
assert auction.call().received_wei() == 100
assert auction.call().bids(A) == 100
# End auction by bidding the needed amount
missing_funds = auction.call().missingFundsToEndAuction()
# 46528 gas cost
txn_hash2 = auction.transact({'from': A, "value": missing_funds}).bid()
ev_handler.add(txn_hash2, 'BidSubmission',
checkBidEvent(A, missing_funds, missing_funds))
assert auction.call().received_wei() == missing_funds + 100
assert auction.call().bids(A) == missing_funds + 100
auction.transact({'from': owner}).finalizeAuction()
auction_end_tests(auction, B)
# Any payable transactions should fail now
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': A, "value": 1}).bid()
with pytest.raises(tester.TransactionFailed):
eth.sendTransaction({'from': A, 'to': auction.address, 'value': 1})
end_time = auction.call().end_time()
elapsed = auction.call().token_claim_waiting_period()
claim_ok_timestamp = end_time + elapsed + 1
# We cannot claim tokens before waiting period has passed
if claim_ok_timestamp > web3.eth.getBlock('latest')['timestamp']:
with pytest.raises(tester.TransactionFailed):
auction_claim_tokens_tested(token, auction, A)
# Simulate time travel
web3.testing.timeTravel(claim_ok_timestamp)
auction_claim_tokens_tested(token, auction, A)
assert auction.call().stage() == 4 # TokensDistributed
# Any payable transactions should fail now
with pytest.raises(tester.TransactionFailed):
auction.transact({'from': A, "value": 100}).bid()
with pytest.raises(tester.TransactionFailed):
eth.sendTransaction({'from': A, 'to': auction.address, 'value': 100})
ev_handler.check()