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wallet: override minfee checks (fOverrideFeeRate) for fee_rate

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in RPCs fundrawtransaction and walletcreatefundedpsbt only.

This provides the existing feeRate (BTC/kvB) behavior in these two RPCs to the
new fee_rate (sat/vB) param also.

See these two GitHub review discussions for more info:
https://github.com/bitcoin/bitcoin/pull/10706/#discussion_r126560525
https://github.com/bitcoin/bitcoin/pull/20305#discussion_r520032533
This commit is contained in:
Jon Atack
2020-11-12 11:16:48 +01:00
parent 9a670b4f07
commit 05e82d86b0
3 changed files with 37 additions and 31 deletions
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12
test/functional/rpc_psbt.py
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@ -192,9 +192,14 @@ class PSBTTest(BitcoinTestFramework):
assert_approx(res1["fee"], 0.055, 0.005)
res2 = self.nodes[1].walletcreatefundedpsbt(inputs, outputs, 0, {"feeRate": 0.1, "add_inputs": True})
assert_approx(res2["fee"], 0.055, 0.005)
self.log.info("Test min fee rate checks with walletcreatefundedpsbt are bypassed, e.g. a fee_rate under 1 sat/vB is allowed")
res3 = self.nodes[1].walletcreatefundedpsbt(inputs, outputs, 0, {"fee_rate": 0.99999999, "add_inputs": True})
assert_approx(res3["fee"], 0.00000381, 0.0000001)
res4 = self.nodes[1].walletcreatefundedpsbt(inputs, outputs, 0, {"feeRate": 0.00000999, "add_inputs": True})
assert_approx(res4["fee"], 0.00000381, 0.0000001)
self.log.info("Test invalid fee rate settings")
assert_raises_rpc_error(-4, "Fee rate (0.000 sat/vB) is lower than the minimum fee rate setting (1.000 sat/vB)",
assert_raises_rpc_error(-8, "Invalid fee_rate 0.000 sat/vB (must be greater than 0)",
self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"fee_rate": 0, "add_inputs": True})
assert_raises_rpc_error(-8, "Invalid feeRate 0.00000000 BTC/kvB (must be greater than 0)",
self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"feeRate": 0, "add_inputs": True})
@ -244,11 +249,6 @@ class PSBTTest(BitcoinTestFramework):
assert_raises_rpc_error(-8, "Invalid conf_target, must be between 1 and 1008", # max value of 1008 per src/policy/fees.h
self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"estimate_mode": mode, "conf_target": n, "add_inputs": True})
# Test setting explicit fee rate just below the minimum.
self.log.info("- raises RPC error 'fee rate too low' if feerate_sat_vb of 0.99999999 is passed")
assert_raises_rpc_error(-4, "Fee rate (0.999 sat/vB) is lower than the minimum fee rate setting (1.000 sat/vB)",
self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"fee_rate": 0.99999999, "add_inputs": True})
self.log.info("Test walletcreatefundedpsbt with too-high fee rate produces total fee well above -maxtxfee and raises RPC error")
# previously this was silently capped at -maxtxfee
for bool_add, outputs_array in {True: outputs, False: [{self.nodes[1].getnewaddress(): 1}]}.items():