Add --quiet option to suppress rpc-tests.py output

rpt-tests.py outputs progress information as it runs tests. This commit
adds a --quiet option that suppresses that progress output and only
prints a summary of results (and logs from failed tests).

test/functional/test_runner.py

@@ -23,6 +23,7 @@ import sys
 import subprocess
 import tempfile
 import re
+import logging
 
 TEST_EXIT_PASSED = 0
 TEST_EXIT_SKIPPED = 77
@@ -141,6 +142,7 @@ def main():
     parser.add_argument('--force', '-f', action='store_true', help='run tests even on platforms where they are disabled by default (e.g. windows).')
     parser.add_argument('--help', '-h', '-?', action='store_true', help='print help text and exit')
     parser.add_argument('--jobs', '-j', type=int, default=4, help='how many test scripts to run in parallel. Default=4.')
+    parser.add_argument('--quiet', '-q', action='store_true', help='only print results summary and failure logs')
     parser.add_argument('--nozmq', action='store_true', help='do not run the zmq tests')
     args, unknown_args = parser.parse_known_args()
 
@@ -152,6 +154,10 @@ def main():
     config = configparser.ConfigParser()
     config.read_file(open(os.path.dirname(__file__) + "/config.ini"))
 
+    # Set up logging
+    logging_level = logging.INFO if args.quiet else logging.DEBUG
+    logging.basicConfig(format='%(message)s', level=logging_level)
+
     enable_wallet = config["components"].getboolean("ENABLE_WALLET")
     enable_utils = config["components"].getboolean("ENABLE_UTILS")
     enable_bitcoind = config["components"].getboolean("ENABLE_BITCOIND")
@@ -233,7 +239,7 @@ def run_tests(test_list, src_dir, build_dir, exeext, jobs=1, enable_coverage=Fal
     if enable_coverage:
         coverage = RPCCoverage()
         flags.append(coverage.flag)
-        print("Initializing coverage directory at %s\n" % coverage.dir)
+        logging.debug("Initializing coverage directory at %s" % coverage.dir)
     else:
         coverage = None
 
@@ -249,16 +255,20 @@ def run_tests(test_list, src_dir, build_dir, exeext, jobs=1, enable_coverage=Fal
     job_queue = TestHandler(jobs, tests_dir, test_list, flags)
 
     max_len_name = len(max(test_list, key=len))
-    results = BOLD[1] + "%s | %s | %s\n\n" % ("TEST".ljust(max_len_name), "STATUS ", "DURATION") + BOLD[0]
+    results = "\n" + BOLD[1] + "%s | %s | %s\n\n" % ("TEST".ljust(max_len_name), "STATUS ", "DURATION") + BOLD[0]
     for _ in range(len(test_list)):
         (name, stdout, stderr, status, duration) = job_queue.get_next()
         all_passed = all_passed and status != "Failed"
         time_sum += duration
 
-        print('\n' + BOLD[1] + name + BOLD[0] + ":")
-        print('' if status == "Passed" else stdout + '\n', end='')
-        print('' if stderr == '' else 'stderr:\n' + stderr + '\n', end='')
-        print("Status: %s%s%s, Duration: %s s\n" % (BOLD[1], status, BOLD[0], duration))
+        if status == "Passed":
+            logging.debug("\n%s%s%s passed, Duration: %s s" % (BOLD[1], name, BOLD[0], duration))
+        elif status == "Skipped":
+            logging.debug("\n%s%s%s skipped" % (BOLD[1], name, BOLD[0]))
+        else:
+            print("\n%s%s%s failed, Duration: %s s\n" % (BOLD[1], name, BOLD[0], duration))
+            print(BOLD[1] + 'stdout:\n' + BOLD[0] + stdout + '\n')
+            print(BOLD[1] + 'stderr:\n' + BOLD[0] + stderr + '\n')
 
         results += "%s | %s | %s s\n" % (name.ljust(max_len_name), status.ljust(7), duration)
 
@@ -269,7 +279,7 @@ def run_tests(test_list, src_dir, build_dir, exeext, jobs=1, enable_coverage=Fal
     if coverage:
         coverage.report_rpc_coverage()
 
-        print("Cleaning up coverage data")
+        logging.debug("Cleaning up coverage data")
         coverage.cleanup()
 
     sys.exit(not all_passed)