[qa] pull-tester: Run rpc test in parallel

qa/README.md

@@ -35,6 +35,9 @@ Run all possible tests with
 
     qa/pull-tester/rpc-tests.py -extended
 
+By default, tests will be run in parallel if you want to specify how many
+tests should be run in parallel, append `-paralell=n` (default n=4).
+
 If you want to create a basic coverage report for the rpc test suite, append `--coverage`.
 
 Possible options, which apply to each individual test run:

qa/pull-tester/rpc-tests.py

@@ -53,10 +53,12 @@ ENABLE_COVERAGE=0
 
 #Create a set to store arguments and create the passon string
 opts = set()
-passon_args = ""
+passon_args = []
 PASSON_REGEX = re.compile("^--")
+PARALLEL_REGEX = re.compile('^-parallel=')
 
 print_help = False
+run_parallel = 4
 
 for arg in sys.argv[1:]:
     if arg == "--help" or arg == "-h" or arg == "-?":
@@ -65,7 +67,9 @@ for arg in sys.argv[1:]:
     if arg == '--coverage':
         ENABLE_COVERAGE = 1
     elif PASSON_REGEX.match(arg):
-        passon_args += " " + arg
+        passon_args.append(arg)
+    elif PARALLEL_REGEX.match(arg):
+        run_parallel = int(arg.split(sep='=', maxsplit=1)[1])
     else:
         opts.add(arg)
 
@@ -96,6 +100,7 @@ if ENABLE_ZMQ:
 
 #Tests
 testScripts = [
+    'walletbackup.py',
     'bip68-112-113-p2p.py',
     'wallet.py',
     'listtransactions.py',
@@ -116,7 +121,6 @@ testScripts = [
     'merkle_blocks.py',
     'fundrawtransaction.py',
     'signrawtransactions.py',
-    'walletbackup.py',
     'nodehandling.py',
     'reindex.py',
     'decodescript.py',
@@ -131,7 +135,7 @@ testScripts = [
     'abandonconflict.py',
     'p2p-versionbits-warning.py',
     'importprunedfunds.py',
-    'signmessages.py'
+    'signmessages.py',
 ]
 if ENABLE_ZMQ:
     testScripts.append('zmq_test.py')
@@ -160,6 +164,7 @@ testScriptsExt = [
     'pruning.py', # leave pruning last as it takes a REALLY long time
 ]
 
+
 def runtests():
     test_list = []
     if '-extended' in opts:
@@ -173,7 +178,7 @@ def runtests():
 
     if print_help:
         # Only print help of the first script and exit
-        subprocess.check_call(RPC_TESTS_DIR + test_list[0] + ' -h', shell=True)
+        subprocess.check_call((RPC_TESTS_DIR + test_list[0]).split() + ['-h'])
         sys.exit(0)
 
     coverage = None
@@ -181,15 +186,34 @@ def runtests():
     if ENABLE_COVERAGE:
         coverage = RPCCoverage()
         print("Initializing coverage directory at %s\n" % coverage.dir)
-    flags = " --srcdir %s/src %s %s" % (BUILDDIR, coverage.flag if coverage else '', passon_args)
+    flags = ["--srcdir=%s/src" % BUILDDIR] + passon_args
+    if coverage:
+        flags.append(coverage.flag)
+
+    if len(test_list) > 1:
+        # Populate cache
+        subprocess.check_output([RPC_TESTS_DIR + 'create_cache.py'] + flags)
 
     #Run Tests
-    for t in test_list:
-            print("Running testscript %s%s%s ..." % (BOLD[1], t, BOLD[0]))
-            time0 = time.time()
-            subprocess.check_call(
-                RPC_TESTS_DIR + t + flags, shell=True)
-            print("Duration: %s s\n" % (int(time.time() - time0)))
+    max_len_name = len(max(test_list, key=len))
+    time_sum = 0
+    time0 = time.time()
+    job_queue = RPCTestHandler(run_parallel, test_list, flags)
+    results = BOLD[1] + "%s | %s | %s\n\n" % ("TEST".ljust(max_len_name), "PASSED", "DURATION") + BOLD[0]
+    all_passed = True
+    for _ in range(len(test_list)):
+        (name, stdout, stderr, passed, duration) = job_queue.get_next()
+        all_passed = all_passed and passed
+        time_sum += duration
+
+        print('\n' + BOLD[1] + name + BOLD[0] + ":")
+        print(stdout)
+        print('stderr:\n' if not stderr == '' else '', stderr)
+        results += "%s | %s | %s s\n" % (name.ljust(max_len_name), str(passed).ljust(6), duration)
+        print("Pass: %s%s%s, Duration: %s s\n" % (BOLD[1], passed, BOLD[0], duration))
+    results += BOLD[1] + "\n%s | %s | %s s (accumulated)" % ("ALL".ljust(max_len_name), str(all_passed).ljust(6), time_sum) + BOLD[0]
+    print(results)
+    print("\nRuntime: %s s" % (int(time.time() - time0)))
 
     if coverage:
         coverage.report_rpc_coverage()
@@ -197,6 +221,48 @@ def runtests():
         print("Cleaning up coverage data")
         coverage.cleanup()
 
+    sys.exit(not all_passed)
+
+
+class RPCTestHandler:
+    """
+    Trigger the testscrips passed in via the list.
+    """
+
+    def __init__(self, num_tests_parallel, test_list=None, flags=None):
+        assert(num_tests_parallel >= 1)
+        self.num_jobs = num_tests_parallel
+        self.test_list = test_list
+        self.flags = flags
+        self.num_running = 0
+        self.jobs = []
+
+    def get_next(self):
+        while self.num_running < self.num_jobs and self.test_list:
+            # Add tests
+            self.num_running += 1
+            t = self.test_list.pop(0)
+            self.jobs.append((t,
+                              time.time(),
+                              subprocess.Popen((RPC_TESTS_DIR + t).split() + self.flags,
+                                               universal_newlines=True,
+                                               stdout=subprocess.PIPE,
+                                               stderr=subprocess.PIPE)))
+        if not self.jobs:
+            raise IndexError('%s from empty list' % __name__)
+        while True:
+            # Return first proc that finishes
+            time.sleep(.5)
+            for j in self.jobs:
+                (name, time0, proc) = j
+                if proc.poll() is not None:
+                    (stdout, stderr) = proc.communicate(timeout=3)
+                    passed = stderr == "" and proc.returncode == 0
+                    self.num_running -= 1
+                    self.jobs.remove(j)
+                    return name, stdout, stderr, passed, int(time.time() - time0)
+            print('.', end='', flush=True)
+
 
 class RPCCoverage(object):
     """
@@ -215,7 +281,7 @@ class RPCCoverage(object):
     """
     def __init__(self):
         self.dir = tempfile.mkdtemp(prefix="coverage")
-        self.flag = '--coveragedir %s' % self.dir
+        self.flag = '--coveragedir=%s' % self.dir
 
     def report_rpc_coverage(self):
         """

qa/rpc-tests/create_cache.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+# Copyright (c) 2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#
+# Helper script to create the cache
+# (see BitcoinTestFramework.setup_chain)
+#
+
+from test_framework.test_framework import BitcoinTestFramework
+
+class CreateCache(BitcoinTestFramework):
+
+    def setup_network(self):
+        # Don't setup any test nodes
+        self.options.noshutdown = True
+
+    def run_test(self):
+        pass
+
+if __name__ == '__main__':
+    CreateCache().main()