make-test: Python pep8 compliance for sequences

For sequences, (strings, lists, tuples), use the fact that
empty sequences are false. A tiny change towards getting
full pep8 compliance, which will look good.
Yes: if not seq:
     if seq:
No:  if len(seq):
     if not len(seq):
(https://www.python.org/dev/peps/pep-0008/)

Change-Id: I6b565bef424f81afc66aba3b0041a5029a9f8954
Signed-off-by: Naveen Joy <najoy@cisco.com>

1 files changed, 13 insertions, 13 deletions

diff --git a/test/run_tests.py b/test/run_tests.py
index f5d0d3546a2..6ceb0af958e 100644
--- a/test/run_tests.py
+++ b/test/run_tests.py
@@ -83,7 +83,7 @@ class TestResult(dict):
             tc_id = testcase.id()
             if tc_id not in self[PASS] and tc_id not in self[SKIP]:
                 rerun_ids.add(tc_id)
-        if len(rerun_ids) > 0:
+        if rerun_ids:
             return suite_from_failed(self.testcase_suite, rerun_ids)
 
     def get_testcase_names(self, test_id):
@@ -218,11 +218,11 @@ class TestCaseWrapper(object):
 def stdouterr_reader_wrapper(unread_testcases, finished_unread_testcases,
                              read_testcases):
     read_testcase = None
-    while read_testcases.is_set() or len(unread_testcases):
-        if len(finished_unread_testcases):
+    while read_testcases.is_set() or unread_testcases:
+        if finished_unread_testcases:
             read_testcase = finished_unread_testcases.pop()
             unread_testcases.remove(read_testcase)
-        elif len(unread_testcases):
+        elif unread_testcases:
             read_testcase = unread_testcases.pop()
         if read_testcase:
             data = ''
@@ -293,7 +293,7 @@ def handle_cores(failed_testcases):
     if debug_core:
         for failed_testcase in failed_testcases:
             tcs_with_core = failed_testcase.testclasess_with_core
-            if len(tcs_with_core) > 0:
+            if tcs_with_core:
                 for test, vpp_binary, tempdir in tcs_with_core.values():
                     check_and_handle_core(vpp_binary, tempdir, test)
 
@@ -327,7 +327,7 @@ def run_forked(testcase_suites):
     manager = StreamQueueManager()
     manager.start()
     for i in range(concurrent_tests):
-        if len(testcase_suites) > 0:
+        if testcase_suites:
             wrapped_testcase_suite = TestCaseWrapper(testcase_suites.pop(0),
                                                      manager)
             wrapped_testcase_suites.add(wrapped_testcase_suite)
@@ -347,7 +347,7 @@ def run_forked(testcase_suites):
     stop_run = False
 
     try:
-        while len(wrapped_testcase_suites) > 0:
+        while wrapped_testcase_suites:
             finished_testcase_suites = set()
             for wrapped_testcase_suite in wrapped_testcase_suites:
                 while wrapped_testcase_suite.result_parent_end.poll():
@@ -434,9 +434,9 @@ def run_forked(testcase_suites):
                 finished_unread_testcases.add(finished_testcase)
                 finished_testcase.stdouterr_queue.put(None)
                 if stop_run:
-                    while len(testcase_suites) > 0:
+                    while testcase_suites:
                         results.append(TestResult(testcase_suites.pop(0)))
-                elif len(testcase_suites) > 0:
+                elif testcase_suites:
                     new_testcase = TestCaseWrapper(testcase_suites.pop(0),
                                                    manager)
                     wrapped_testcase_suites.add(new_testcase)
@@ -630,7 +630,7 @@ class AllResults(dict):
                 failed_testcase_ids = result[FAIL]
                 errored_testcase_ids = result[ERROR]
                 old_testcase_name = None
-                if len(failed_testcase_ids) or len(errored_testcase_ids):
+                if failed_testcase_ids or errored_testcase_ids:
                     for failed_test_id in failed_testcase_ids:
                         new_testcase_name, test_name = \
                             result.get_testcase_names(failed_test_id)
@@ -649,7 +649,7 @@ class AllResults(dict):
                             old_testcase_name = new_testcase_name
                         print('      ERROR: {} [{}]'.format(
                             colorize(test_name, RED), failed_test_id))
-        if len(self.testsuites_no_tests_run) > 0:
+        if self.testsuites_no_tests_run:
             print('TESTCASES WHERE NO TESTS WERE SUCCESSFULLY EXECUTED:')
             tc_classes = set()
             for testsuite in self.testsuites_no_tests_run:
@@ -799,7 +799,7 @@ if __name__ == '__main__':
     if attempts > 1:
         print("Perform %s attempts to pass the suite..." % attempts)
 
-    if run_interactive and len(suites):
+    if run_interactive and suites:
         # don't fork if requiring interactive terminal
         full_suite = unittest.TestSuite()
         map(full_suite.addTests, suites)
@@ -821,7 +821,7 @@ if __name__ == '__main__':
         sys.exit(not was_successful)
     else:
         exit_code = 0
-        while len(suites) > 0 and attempts > 0:
+        while suites and attempts > 0:
             results = run_forked(suites)
             exit_code, suites = parse_results(results)
             attempts -= 1