test: re-enable CLI test support by using EncodeDecimal in json.dumps()

As mentioned in
bitcoin/bitcoin#17675 (comment)

Author: fanquake

test/functional/feature_segwit.py

@@ -72,7 +72,6 @@ def set_test_params(self):
                 "-addresstype=legacy",
             ],
         ]
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()

test/functional/mempool_package_onemore.py

@@ -19,7 +19,6 @@ class MempoolPackagesTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 1
         self.extra_args = [["-maxorphantx=1000"]]
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()

test/functional/mempool_packages.py

@@ -27,7 +27,6 @@ def set_test_params(self):
             ["-maxorphantx=1000"],
             ["-maxorphantx=1000", "-limitancestorcount={}".format(MAX_ANCESTORS_CUSTOM)],
         ]
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()

test/functional/rpc_fundrawtransaction.py

@@ -31,7 +31,6 @@ def set_test_params(self):
         # This test isn't testing tx relay. Set whitelist on the peers for
         # instant tx relay.
         self.extra_args = [['-whitelist=127.0.0.1']] * self.num_nodes
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()

test/functional/rpc_signrawtransaction.py

@@ -15,7 +15,6 @@ class SignRawTransactionsTest(BitcoinTestFramework):
     def set_test_params(self):
         self.setup_clean_chain = True
         self.num_nodes = 2
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()

test/functional/rpc_txoutproof.py

@@ -14,7 +14,6 @@ def set_test_params(self):
         self.setup_clean_chain = True
         # Nodes 0/1 are "wallet" nodes, Nodes 2/3 are used for testing
         self.extra_args = [[], [], [], ["-txindex"]]
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()

test/functional/test_framework/test_node.py

@@ -30,6 +30,7 @@
     rpc_url,
     wait_until,
     p2p_port,
+    EncodeDecimal,
 )
 
 BITCOIND_PROC_WAIT_TIMEOUT = 60
@@ -480,7 +481,7 @@ def arg_to_cli(arg):
     if isinstance(arg, bool):
         return str(arg).lower()
     elif isinstance(arg, dict) or isinstance(arg, list):
-        return json.dumps(arg)
+        return json.dumps(arg, default=EncodeDecimal)
     else:
         return str(arg)
 

test/functional/test_framework/util.py

@@ -190,6 +190,11 @@ def check_json_precision():
     if satoshis != 2000000000000003:
         raise RuntimeError("JSON encode/decode loses precision")
 
+def EncodeDecimal(o):
+    if isinstance(o, Decimal):
+        return str(o)
+    raise TypeError(repr(o) + " is not JSON serializable")
+
 def count_bytes(hex_string):
     return len(bytearray.fromhex(hex_string))
 

test/functional/wallet_abandonconflict.py

@@ -26,7 +26,6 @@ class AbandonConflictTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 2
         self.extra_args = [["-minrelaytxfee=0.00001"], []]
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()

test/functional/wallet_balance.py

@@ -54,7 +54,6 @@ def set_test_params(self):
             ['-limitdescendantcount=3'],  # Limit mempool descendants as a hack to have wallet txs rejected from the mempool
             [],
         ]
-        self.supports_cli = False
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()