test: Return chain of MiniWallet txs from MiniWallet chain method

Author: MarcoFalke

test/functional/mempool_package_limits.py

@@ -45,7 +45,7 @@ def test_chain_limits_helper(self, mempool_count, package_count):
         assert_equal(0, node.getmempoolinfo()["size"])
         chain_hex = []
 
-        chaintip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=mempool_count)
+        chaintip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=mempool_count)[-1]["new_utxo"]
         # in-package transactions
         for _ in range(package_count):
             tx = self.wallet.create_self_transfer(utxo_to_spend=chaintip_utxo)
@@ -100,13 +100,13 @@ def test_desc_count_limits(self):
 
         package_hex = []
         # Chain A (M2a... M12a)
-        chain_a_tip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=11, utxo_to_spend=m1_utxos[0])
+        chain_a_tip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=11, utxo_to_spend=m1_utxos[0])[-1]["new_utxo"]
         # Pa
         pa_hex = self.wallet.create_self_transfer(utxo_to_spend=chain_a_tip_utxo)["hex"]
         package_hex.append(pa_hex)
 
         # Chain B (M2b... M13b)
-        chain_b_tip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=12, utxo_to_spend=m1_utxos[1])
+        chain_b_tip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=12, utxo_to_spend=m1_utxos[1])[-1]["new_utxo"]
         # Pb
         pb_hex = self.wallet.create_self_transfer(utxo_to_spend=chain_b_tip_utxo)["hex"]
         package_hex.append(pb_hex)
@@ -145,7 +145,7 @@ def test_desc_count_limits_2(self):
         m1_utxos = self.wallet.send_self_transfer_multi(from_node=node, num_outputs=2)['new_utxos']
 
         # Chain M2...M24
-        self.wallet.send_self_transfer_chain(from_node=node, chain_length=23, utxo_to_spend=m1_utxos[0])
+        self.wallet.send_self_transfer_chain(from_node=node, chain_length=23, utxo_to_spend=m1_utxos[0])[-1]["new_utxo"]
 
         # P1
         p1_tx = self.wallet.create_self_transfer(utxo_to_spend=m1_utxos[1])
@@ -191,7 +191,7 @@ def test_anc_count_limits(self):
 
         # Two chains of 13 transactions each
         for _ in range(2):
-            chain_tip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=12)
+            chain_tip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=12)[-1]["new_utxo"]
             # Save the 13th transaction for the package
             tx = self.wallet.create_self_transfer(utxo_to_spend=chain_tip_utxo)
             package_hex.append(tx["hex"])
@@ -234,7 +234,7 @@ def test_anc_count_limits_2(self):
         self.log.info("Check that in-mempool and in-package ancestors are calculated properly in packages")
         # Two chains of 12 transactions each
         for _ in range(2):
-            chaintip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=12)
+            chaintip_utxo = self.wallet.send_self_transfer_chain(from_node=node, chain_length=12)[-1]["new_utxo"]
             # last 2 transactions will be the parents of Pc
             pc_parent_utxos.append(chaintip_utxo)
 

test/functional/rpc_packages.py

@@ -128,8 +128,8 @@ def test_chain(self):
         node = self.nodes[0]
 
         chain = self.wallet.create_self_transfer_chain(chain_length=25)
-        chain_hex = chain["chain_hex"]
-        chain_txns = chain["chain_txns"]
+        chain_hex = [t["hex"] for t in chain]
+        chain_txns = [t["tx"] for t in chain]
 
         self.log.info("Check that testmempoolaccept requires packages to be sorted by dependency")
         assert_equal(node.testmempoolaccept(rawtxs=chain_hex[::-1]),
@@ -374,7 +374,7 @@ def test_submitpackage(self):
 
         self.log.info("Submitpackage only allows packages of 1 child with its parents")
         # Chain of 3 transactions has too many generations
-        chain_hex = self.wallet.create_self_transfer_chain(chain_length=25)["chain_hex"]
+        chain_hex = [t["hex"] for t in self.wallet.create_self_transfer_chain(chain_length=25)]
         assert_raises_rpc_error(-25, "not-child-with-parents", node.submitpackage, chain_hex)
 
 

test/functional/test_framework/wallet.py

@@ -354,38 +354,31 @@ def sendrawtransaction(self, *, from_node, tx_hex, maxfeerate=0, **kwargs):
         self.scan_tx(from_node.decoderawtransaction(tx_hex))
         return txid
 
-    def create_self_transfer_chain(self, *, chain_length):
+    def create_self_transfer_chain(self, *, chain_length, utxo_to_spend=None):
         """
         Create a "chain" of chain_length transactions. The nth transaction in
         the chain is a child of the n-1th transaction and parent of the n+1th transaction.
-
-        Returns a dic  {"chain_hex": chain_hex, "chain_txns" : chain_txns}
-
-        "chain_hex" is a list representing the chain's transactions in hexadecimal.
-        "chain_txns" is a list representing the chain's transactions in the CTransaction object.
         """
-        chaintip_utxo = self.get_utxo()
-        chain_hex = []
-        chain_txns = []
+        chaintip_utxo = utxo_to_spend or self.get_utxo()
+        chain = []
 
         for _ in range(chain_length):
             tx = self.create_self_transfer(utxo_to_spend=chaintip_utxo)
             chaintip_utxo = tx["new_utxo"]
-            chain_hex.append(tx["hex"])
-            chain_txns.append(tx["tx"])
+            chain.append(tx)
 
-        return {"chain_hex": chain_hex, "chain_txns" : chain_txns}
+        return chain
 
-    def send_self_transfer_chain(self, *, from_node, chain_length, utxo_to_spend=None):
+    def send_self_transfer_chain(self, *, from_node, **kwargs):
         """Create and send a "chain" of chain_length transactions. The nth transaction in
         the chain is a child of the n-1th transaction and parent of the n+1th transaction.
 
-        Returns the chaintip (nth) utxo
+        Returns a list of objects for each tx (see create_self_transfer_multi).
         """
-        chaintip_utxo = utxo_to_spend or self.get_utxo()
-        for _ in range(chain_length):
-            chaintip_utxo = self.send_self_transfer(utxo_to_spend=chaintip_utxo, from_node=from_node)["new_utxo"]
-        return chaintip_utxo
+        chain = self.create_self_transfer_chain(**kwargs)
+        for t in chain:
+            self.sendrawtransaction(from_node=from_node, tx_hex=t["hex"])
+        return chain
 
 
 def getnewdestination(address_type='bech32m'):