Closes #1833. Format currency amounts in z_sendmany error message.

Improve coverage of possible error states from z_sendmany.
Refactor qa test for z_sendmany operations.

qa/rpc-tests/wallet_protectcoinbase.py

@@ -8,7 +8,7 @@ from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import *
 from time import *
 
-class Wallet2Test (BitcoinTestFramework):
+class WalletProtectCoinbaseTest (BitcoinTestFramework):
 
     def setup_chain(self):
         print("Initializing test directory "+self.options.tmpdir)
@@ -23,21 +23,28 @@ class Wallet2Test (BitcoinTestFramework):
         self.is_network_split=False
         self.sync_all()
 
-    def wait_for_operationd_success(self, myopid):
+    def wait_and_assert_operationid_status(self, myopid, in_status='success', in_errormsg=None):
         print('waiting for async operation {}'.format(myopid))
         opids = []
         opids.append(myopid)
         timeout = 120
         status = None
+        errormsg = None
         for x in xrange(1, timeout):
             results = self.nodes[0].z_getoperationresult(opids)
             if len(results)==0:
                 sleep(1)
             else:
                 status = results[0]["status"]
+                if status == "failed":
+                    errormsg = results[0]['error']['message']
                 break
         print('...returned status: {}'.format(status))
-        assert_equal("success", status)
+        assert_equal(in_status, status)
+        if errormsg is not None:
+            assert(in_errormsg is not None)
+            assert_equal(in_errormsg in errormsg, True)
+            print('...returned error: {}'.format(errormsg))
 
     def run_test (self):
         print "Mining blocks..."
@@ -94,7 +101,7 @@ class Wallet2Test (BitcoinTestFramework):
         recipients = []
         recipients.append({"address":myzaddr, "amount": Decimal('20.0') - Decimal('0.0001')})
         myopid = self.nodes[0].z_sendmany(mytaddr, recipients)
-        self.wait_for_operationd_success(myopid)
+        self.wait_and_assert_operationid_status(myopid)
         self.sync_all()
         self.nodes[1].generate(1)
         self.sync_all()
@@ -109,7 +116,7 @@ class Wallet2Test (BitcoinTestFramework):
         recipients = []
         recipients.append({"address":mytaddr, "amount":Decimal('10.0')})
         myopid = self.nodes[0].z_sendmany(myzaddr, recipients)
-        self.wait_for_operationd_success(myopid)
+        self.wait_and_assert_operationid_status(myopid)
         self.sync_all()
         self.nodes[1].generate(1)
         self.sync_all()
@@ -128,6 +135,14 @@ class Wallet2Test (BitcoinTestFramework):
             errorString = e.error['message']
         assert_equal("Insufficient funds" in errorString, True)
 
+        # z_sendmany will fail because of insufficient funds
+        recipients = []
+        recipients.append({"address":self.nodes[1].getnewaddress(), "amount":Decimal('10000.0')})
+        myopid = self.nodes[0].z_sendmany(mytaddr, recipients)
+        self.wait_and_assert_operationid_status(myopid, "failed", "Insufficient transparent funds, have 10.00, need 10000.0001")
+        myopid = self.nodes[0].z_sendmany(myzaddr, recipients)
+        self.wait_and_assert_operationid_status(myopid, "failed", "Insufficient protected funds, have 9.9998, need 10000.0001")
+
         # Send will fail because of insufficient funds unless sender uses coinbase utxos
         try:
             self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 21)
@@ -156,7 +171,7 @@ class Wallet2Test (BitcoinTestFramework):
             newzaddr = self.nodes[2].z_getnewaddress()
             recipients.append({"address":newzaddr, "amount":amount_per_recipient})
         myopid = self.nodes[0].z_sendmany(myzaddr, recipients)
-        self.wait_for_operationd_success(myopid)
+        self.wait_and_assert_operationid_status(myopid)
         self.sync_all()
         self.nodes[1].generate(1)
         self.sync_all()
@@ -166,4 +181,4 @@ class Wallet2Test (BitcoinTestFramework):
         assert_equal(Decimal(resp["private"]), num_recipients * amount_per_recipient)
 
 if __name__ == '__main__':
-    Wallet2Test ().main ()
+    WalletProtectCoinbaseTest().main()

src/wallet/asyncrpcoperation_sendmany.cpp

@@ -200,11 +200,15 @@ bool AsyncRPCOperation_sendmany::main_impl() {
     assert(!isfromzaddr_ || t_inputs_total == 0);
 
     if (isfromtaddr_ && (t_inputs_total < targetAmount)) {
-        throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, strprintf("Insufficient transparent funds, have %ld, need %ld", t_inputs_total, targetAmount));
+        throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS,
+            strprintf("Insufficient transparent funds, have %s, need %s",
+            FormatMoney(t_inputs_total), FormatMoney(targetAmount)));
     }
     
     if (isfromzaddr_ && (z_inputs_total < targetAmount)) {
-        throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, strprintf("Insufficient protected funds, have %ld, need %ld", z_inputs_total, targetAmount));
+        throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS,
+            strprintf("Insufficient protected funds, have %s, need %s",
+            FormatMoney(z_inputs_total), FormatMoney(targetAmount)));
     }
 
     // If from address is a taddr, select UTXOs to spend
@@ -319,7 +323,9 @@ bool AsyncRPCOperation_sendmany::main_impl() {
             if (selectedUTXOCoinbase) {
                 assert(isSingleZaddrOutput);
                 throw JSONRPCError(RPC_WALLET_ERROR, strprintf(
-                    "Change %ld not allowed. When protecting coinbase funds, the wallet does not allow any change as there is currently no way to specify a change address in z_sendmany.", change));
+                    "Change %s not allowed. When protecting coinbase funds, the wallet does not "
+                    "allow any change as there is currently no way to specify a change address "
+                    "in z_sendmany.", FormatMoney(change)));
             } else {
                 add_taddr_change_output_to_tx(change);
                 LogPrint("zrpc", "%s: transparent change in transaction output (amount=%s)\n",