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qa: test for issues with MIN_CHANGE

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Adds a test to bumpfee.py that tests the policy of MIN_CHANGE and
MIN_FINAL_CHANGE parameters when using RBF, making sure that with
the wallet default configuration, RBF can be performed. This test
fails on this commit.
This commit is contained in:
Patrick Lodder 2021-09-25 22:20:12 +02:00
parent 0d0c5e5a7f
commit dcc22f1696
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1 changed files with 20 additions and 0 deletions
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20
qa/rpc-tests/bumpfee.py
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@ -70,6 +70,7 @@ class BumpFeeTest(BitcoinTestFramework):
test_rebumping(rbf_node, dest_address)
test_rebumping_not_replaceable(rbf_node, dest_address)
test_unconfirmed_not_spendable(rbf_node, rbf_node_address)
test_dogecoin_wallet_minchange(rbf_node, dest_address)
test_locked_wallet_fails(rbf_node, dest_address)
print("Success")
@ -276,6 +277,25 @@ def test_locked_wallet_fails(rbf_node, dest_address):
assert_raises_jsonrpc(-13, "Please enter the wallet passphrase with walletpassphrase first.",
rbf_node.bumpfee, rbfid)
def test_dogecoin_wallet_minchange(rbf_node, dest_address):
input = Decimal("10.00000000")
min_change = Decimal("0.01000000")
min_fee = Decimal("0.01000000")
bumpfee = Decimal("0.001")
est_tx_size = Decimal("0.193")
destamount = input - min_change - min_fee * est_tx_size
rbfid = spend_one_input(rbf_node,
input,
{dest_address: destamount,
get_change_address(rbf_node): min_change})
bumped_tx = rbf_node.bumpfee(rbfid)
assert_equal(bumped_tx["fee"], min_fee * est_tx_size + bumpfee)
newfee = int((input - destamount - min_fee - bumpfee / 2 ) * 100000000)
bumped_tx = rbf_node.bumpfee(bumped_tx["txid"], {"totalFee": newfee})
assert_equal(bumped_tx["fee"], input - destamount - min_fee - bumpfee / 2)
bumped_tx = rbf_node.bumpfee(bumped_tx["txid"])
assert_equal(bumped_tx["fee"], input - destamount)
rbf_node.settxfee(Decimal("0.00000000"))
def create_fund_sign_send(node, outputs):
rawtx = node.createrawtransaction([], outputs)