QA: add RPC tests for error reporting of "signrawtransaction"

Tests error reporting of transaction signing via RPC call "signrawtransaction".

Expected results:

Test 1: create and sign a valid raw transaction with one input:
- 1) The transaction has a complete set of signatures
- 2) No script verification error occurred

Test 2: create and sign a raw transaction with one valid, one invalid and one missing input script:
- 3) The transaction has no complete set of signatures
- 4) Two script verification errors occurred
- 5) Script verification errors have certain properties ("txid", "vout", "scriptSig", "sequence", "error")
- 6) The verification errors refer to the invalid (vin 1) and missing input (vin 2)

2 files changed, 111 insertions, 1 deletions

diff --git a/qa/pull-tester/rpc-tests.sh b/qa/pull-tester/rpc-tests.sh
index a2d4305f98..4f82263a7a 100755
--- a/qa/pull-tester/rpc-tests.sh
+++ b/qa/pull-tester/rpc-tests.sh
@@ -22,6 +22,7 @@ testScripts=(
     'txn_doublespend.py'
     'txn_doublespend.py --mineblock'
     'getchaintips.py'
+    'rawtransactions.py'
     'rest.py'
     'mempool_spendcoinbase.py'
     'mempool_coinbase_spends.py'
@@ -29,7 +30,7 @@ testScripts=(
     'zapwallettxes.py'
     'proxy_test.py'
     'merkle_blocks.py'
-    'rawtransactions.py'
+    'signrawtransactions.py'
 #    'forknotify.py'
     'maxblocksinflight.py'
     'invalidblockrequest.py'
diff --git a/qa/rpc-tests/signrawtransactions.py b/qa/rpc-tests/signrawtransactions.py
new file mode 100755
index 0000000000..943634bd19
--- /dev/null
+++ b/qa/rpc-tests/signrawtransactions.py
@@ -0,0 +1,109 @@
+#!/usr/bin/env python2
+# Copyright (c) 2015 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+from test_framework import BitcoinTestFramework
+from util import *
+
+
+class SignRawTransactionsTest(BitcoinTestFramework):
+    """Tests transaction signing via RPC command "signrawtransaction"."""
+
+    def setup_chain(self):
+        print('Initializing test directory ' + self.options.tmpdir)
+        initialize_chain_clean(self.options.tmpdir, 1)
+
+    def setup_network(self, split=False):
+        self.nodes = start_nodes(1, self.options.tmpdir)
+        self.is_network_split = False
+
+    def successful_signing_test(self):
+        """Creates and signs a valid raw transaction with one input.
+
+        Expected results:
+
+        1) The transaction has a complete set of signatures
+        2) No script verification error occurred"""
+        privKeys = ['cUeKHd5orzT3mz8P9pxyREHfsWtVfgsfDjiZZBcjUBAaGk1BTj7N']
+
+        inputs = [
+            # Valid pay-to-pubkey script
+            {'txid': '9b907ef1e3c26fc71fe4a4b3580bc75264112f95050014157059c736f0202e71', 'vout': 0,
+             'scriptPubKey': '76a91460baa0f494b38ce3c940dea67f3804dc52d1fb9488ac'}
+        ]
+
+        outputs = {'mpLQjfK79b7CCV4VMJWEWAj5Mpx8Up5zxB': 0.1}
+
+        rawTx = self.nodes[0].createrawtransaction(inputs, outputs)
+        rawTxSigned = self.nodes[0].signrawtransaction(rawTx, inputs, privKeys)
+
+        # 1) The transaction has a complete set of signatures
+        assert 'complete' in rawTxSigned
+        assert_equal(rawTxSigned['complete'], True)
+
+        # 2) No script verification error occurred
+        assert 'errors' not in rawTxSigned
+
+    def script_verification_error_test(self):
+        """Creates and signs a raw transaction with valid (vin 0), invalid (vin 1) and one missing (vin 2) input script.
+
+        Expected results:
+
+        3) The transaction has no complete set of signatures
+        4) Two script verification errors occurred
+        5) Script verification errors have certain properties ("txid", "vout", "scriptSig", "sequence", "error")
+        6) The verification errors refer to the invalid (vin 1) and missing input (vin 2)"""
+        privKeys = ['cUeKHd5orzT3mz8P9pxyREHfsWtVfgsfDjiZZBcjUBAaGk1BTj7N']
+
+        inputs = [
+            # Valid pay-to-pubkey script
+            {'txid': '9b907ef1e3c26fc71fe4a4b3580bc75264112f95050014157059c736f0202e71', 'vout': 0},
+            # Invalid script
+            {'txid': '5b8673686910442c644b1f4993d8f7753c7c8fcb5c87ee40d56eaeef25204547', 'vout': 7},
+            # Missing scriptPubKey
+            {'txid': '9b907ef1e3c26fc71fe4a4b3580bc75264112f95050014157059c736f0202e71', 'vout': 1},
+        ]
+
+        scripts = [
+            # Valid pay-to-pubkey script
+            {'txid': '9b907ef1e3c26fc71fe4a4b3580bc75264112f95050014157059c736f0202e71', 'vout': 0,
+             'scriptPubKey': '76a91460baa0f494b38ce3c940dea67f3804dc52d1fb9488ac'},
+            # Invalid script
+            {'txid': '5b8673686910442c644b1f4993d8f7753c7c8fcb5c87ee40d56eaeef25204547', 'vout': 7,
+             'scriptPubKey': 'badbadbadbad'}
+        ]
+
+        outputs = {'mpLQjfK79b7CCV4VMJWEWAj5Mpx8Up5zxB': 0.1}
+
+        rawTx = self.nodes[0].createrawtransaction(inputs, outputs)
+        rawTxSigned = self.nodes[0].signrawtransaction(rawTx, scripts, privKeys)
+
+        # 3) The transaction has no complete set of signatures
+        assert 'complete' in rawTxSigned
+        assert_equal(rawTxSigned['complete'], False)
+
+        # 4) Two script verification errors occurred
+        assert 'errors' in rawTxSigned
+        assert_equal(len(rawTxSigned['errors']), 2)
+
+        # 5) Script verification errors have certain properties
+        assert 'txid' in rawTxSigned['errors'][0]
+        assert 'vout' in rawTxSigned['errors'][0]
+        assert 'scriptSig' in rawTxSigned['errors'][0]
+        assert 'sequence' in rawTxSigned['errors'][0]
+        assert 'error' in rawTxSigned['errors'][0]
+
+        # 6) The verification errors refer to the invalid (vin 1) and missing input (vin 2)
+        assert_equal(rawTxSigned['errors'][0]['txid'], inputs[1]['txid'])
+        assert_equal(rawTxSigned['errors'][0]['vout'], inputs[1]['vout'])
+        assert_equal(rawTxSigned['errors'][1]['txid'], inputs[2]['txid'])
+        assert_equal(rawTxSigned['errors'][1]['vout'], inputs[2]['vout'])
+
+    def run_test(self):
+        self.successful_signing_test()
+        self.script_verification_error_test()
+
+
+if __name__ == '__main__':
+    SignRawTransactionsTest().main()