Merge #18574: cli: call getbalances.ismine.trusted instead of getwalletinfo.balance

5df0877f91f4ed59031b0d7dcd66780df87ac1af test: update and harden interface_bitcoin_cli tests (Jon Atack)
75019774c96795ef1a57af2a92dd9491f5065cc5 cli -getinfo: use getbalances instead of deprecated getwalletinfo balance (Jon Atack)

Pull request description:

  Extracted from #18453 to preserve that PR as a discussion on multiwallet RPC/CLI.

  This PR updates `bitcoin-cli -getinfo` to fetch the wallet balance from `getbalances` in order to no longer depend on `getwalletinfo.balance` which was deprecated a year ago in facfb41.

  I found this when removing the getwalletinfo() `balance`, `unconfirmed_balance`, and `immature_balance` fields to see what broke from depending on them.

  I didn't see any perceivable change in `-getinfo` run time from the change.

  Test coverage for this change is provided by `test/functional/interface_bitcoin_cli.py`, which the second commit updates to (a) no longer depend on getwalletinfo.balances and (b) test the -getinfo blockcount and balance fields against non-default, non-zero values.

ACKs for top commit:
  robot-visions:
    ACK 5df0877
  MarcoFalke:
    ACK 5df0877
  vasild:
    re-ACK 5df0877f9
  promag:
    Code review ACK 5df0877f91f4ed59031b0d7dcd66780df87ac1af.
  theStack:
    ACK https://github.com/bitcoin/bitcoin/commit/5df0877f91f4ed59031b0d7dcd66780df87ac1af

Tree-SHA512: 0dd8c62f915b1c0112e42b132dcf74a141bdd1f51e7c17d4a698b374ec296f4f9836f7058dbe237cf24f9bfb32ea5000e14f7089e2e86472d9c6a175be26e910

2 files changed, 22 insertions, 9 deletions

diff --git a/src/bitcoin-cli.cpp b/src/bitcoin-cli.cpp
index 6982eaab61..a602688e64 100644
--- a/src/bitcoin-cli.cpp
+++ b/src/bitcoin-cli.cpp
@@ -228,6 +228,7 @@ public:
     const int ID_NETWORKINFO = 0;
     const int ID_BLOCKCHAININFO = 1;
     const int ID_WALLETINFO = 2;
+    const int ID_BALANCES = 3;
 
     /** Create a simulated `getinfo` request. */
     UniValue PrepareRequest(const std::string& method, const std::vector<std::string>& args) override
@@ -239,6 +240,7 @@ public:
         result.push_back(JSONRPCRequestObj("getnetworkinfo", NullUniValue, ID_NETWORKINFO));
         result.push_back(JSONRPCRequestObj("getblockchaininfo", NullUniValue, ID_BLOCKCHAININFO));
         result.push_back(JSONRPCRequestObj("getwalletinfo", NullUniValue, ID_WALLETINFO));
+        result.push_back(JSONRPCRequestObj("getbalances", NullUniValue, ID_BALANCES));
         return result;
     }
 
@@ -246,9 +248,9 @@ public:
     UniValue ProcessReply(const UniValue &batch_in) override
     {
         UniValue result(UniValue::VOBJ);
-        std::vector<UniValue> batch = JSONRPCProcessBatchReply(batch_in, 3);
-        // Errors in getnetworkinfo() and getblockchaininfo() are fatal, pass them on
-        // getwalletinfo() is allowed to fail in case there is no wallet.
+        std::vector<UniValue> batch = JSONRPCProcessBatchReply(batch_in, batch_in.size());
+        // Errors in getnetworkinfo() and getblockchaininfo() are fatal, pass them on;
+        // getwalletinfo() and getbalances() are allowed to fail if there is no wallet.
         if (!batch[ID_NETWORKINFO]["error"].isNull()) {
             return batch[ID_NETWORKINFO];
         }
@@ -265,13 +267,15 @@ public:
         result.pushKV("difficulty", batch[ID_BLOCKCHAININFO]["result"]["difficulty"]);
         result.pushKV("chain", UniValue(batch[ID_BLOCKCHAININFO]["result"]["chain"]));
         if (!batch[ID_WALLETINFO]["result"].isNull()) {
-            result.pushKV("balance", batch[ID_WALLETINFO]["result"]["balance"]);
             result.pushKV("keypoolsize", batch[ID_WALLETINFO]["result"]["keypoolsize"]);
             if (!batch[ID_WALLETINFO]["result"]["unlocked_until"].isNull()) {
                 result.pushKV("unlocked_until", batch[ID_WALLETINFO]["result"]["unlocked_until"]);
             }
             result.pushKV("paytxfee", batch[ID_WALLETINFO]["result"]["paytxfee"]);
         }
+        if (!batch[ID_BALANCES]["result"].isNull()) {
+            result.pushKV("balance", batch[ID_BALANCES]["result"]["mine"]["trusted"]);
+        }
         result.pushKV("relayfee", batch[ID_NETWORKINFO]["result"]["relayfee"]);
         result.pushKV("warnings", batch[ID_NETWORKINFO]["result"]["warnings"]);
         return JSONRPCReplyObj(result, NullUniValue, 1);
diff --git a/test/functional/interface_bitcoin_cli.py b/test/functional/interface_bitcoin_cli.py
index f04a58cd19..2e1e84b707 100755
--- a/test/functional/interface_bitcoin_cli.py
+++ b/test/functional/interface_bitcoin_cli.py
@@ -6,6 +6,12 @@
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_raises_process_error, get_auth_cookie
 
+# The block reward of coinbaseoutput.nValue (50) BTC/block matures after
+# COINBASE_MATURITY (100) blocks. Therefore, after mining 101 blocks we expect
+# node 0 to have a balance of (BLOCKS - COINBASE_MATURITY) * 50 BTC/block.
+BLOCKS = 101
+BALANCE = (BLOCKS - 100) * 50
+
 class TestBitcoinCli(BitcoinTestFramework):
 
     def set_test_params(self):
@@ -17,6 +23,7 @@ class TestBitcoinCli(BitcoinTestFramework):
 
     def run_test(self):
         """Main test logic"""
+        self.nodes[0].generate(BLOCKS)
 
         cli_response = self.nodes[0].cli("-version").send_cli()
         assert "{} RPC client version".format(self.config['environment']['PACKAGE_NAME']) in cli_response
@@ -35,7 +42,7 @@ class TestBitcoinCli(BitcoinTestFramework):
         user, password = get_auth_cookie(self.nodes[0].datadir, self.chain)
 
         self.log.info("Test -stdinrpcpass option")
-        assert_equal(0, self.nodes[0].cli('-rpcuser=%s' % user, '-stdinrpcpass', input=password).getblockcount())
+        assert_equal(BLOCKS, self.nodes[0].cli('-rpcuser=%s' % user, '-stdinrpcpass', input=password).getblockcount())
         assert_raises_process_error(1, "Incorrect rpcuser or rpcpassword", self.nodes[0].cli('-rpcuser=%s' % user, '-stdinrpcpass', input="foo").echo)
 
         self.log.info("Test -stdin and -stdinrpcpass")
@@ -51,10 +58,8 @@ class TestBitcoinCli(BitcoinTestFramework):
         self.log.info("Make sure that -getinfo with arguments fails")
         assert_raises_process_error(1, "-getinfo takes no arguments", self.nodes[0].cli('-getinfo').help)
 
-        self.log.info("Compare responses from `bitcoin-cli -getinfo` and the RPCs data is retrieved from.")
+        self.log.info("Test that -getinfo returns the expected network and blockchain info")
         cli_get_info = self.nodes[0].cli('-getinfo').send_cli()
-        if self.is_wallet_compiled():
-            wallet_info = self.nodes[0].getwalletinfo()
         network_info = self.nodes[0].getnetworkinfo()
         blockchain_info = self.nodes[0].getblockchaininfo()
 
@@ -66,11 +71,15 @@ class TestBitcoinCli(BitcoinTestFramework):
         assert_equal(cli_get_info['difficulty'], blockchain_info['difficulty'])
         assert_equal(cli_get_info['chain'], blockchain_info['chain'])
         if self.is_wallet_compiled():
-            assert_equal(cli_get_info['balance'], wallet_info['balance'])
+            self.log.info("Test that -getinfo returns the expected wallet info")
+            assert_equal(cli_get_info['balance'], BALANCE)
+            wallet_info = self.nodes[0].getwalletinfo()
             assert_equal(cli_get_info['keypoolsize'], wallet_info['keypoolsize'])
             assert_equal(cli_get_info['paytxfee'], wallet_info['paytxfee'])
             assert_equal(cli_get_info['relayfee'], network_info['relayfee'])
             # unlocked_until is not tested because the wallet is not encrypted
+        else:
+            self.log.info("*** Wallet not compiled; -getinfo wallet tests skipped")
 
 
 if __name__ == '__main__':