Use UTC where appropriate in python files

3 files changed, 8 insertions, 8 deletions

diff --git a/js/src/tests/lib/progressbar.py b/js/src/tests/lib/progressbar.py
index 29361660d2..da578783df 100644
--- a/js/src/tests/lib/progressbar.py
+++ b/js/src/tests/lib/progressbar.py
@@ -28,7 +28,7 @@ class ProgressBar(object):
                                 #             field in the counters map.
         self.limit = limit # int: The value of 'current' equal to 100%.
         self.limit_digits = int(math.ceil(math.log10(self.limit))) # int: max digits in limit
-        self.t0 = datetime.now() # datetime: The start time.
+        self.t0 = datetime.utcnow() # datetime: The start time.
 
         # Compute the width of the counters and build the format string.
         self.counters_width = 1 # [
@@ -68,7 +68,7 @@ class ProgressBar(object):
         sys.stdout.write(bar + '|')
 
         # Update the bar.
-        dt = datetime.now() - self.t0
+        dt = datetime.utcnow() - self.t0
         dt = dt.seconds + dt.microseconds * 1e-6
         sys.stdout.write('{:6.1f}s'.format(dt))
         Terminal.clear_right()
diff --git a/js/src/tests/lib/tasks_unix.py b/js/src/tests/lib/tasks_unix.py
index 6550335222..487c749ee2 100644
--- a/js/src/tests/lib/tasks_unix.py
+++ b/js/src/tests/lib/tasks_unix.py
@@ -14,7 +14,7 @@ class Task(object):
         self.pid = pid
         self.stdout = stdout
         self.stderr = stderr
-        self.start = datetime.now()
+        self.start = datetime.utcnow()
         self.out = []
         self.err = []
 
@@ -59,7 +59,7 @@ def get_max_wait(tasks, timeout):
     # If a timeout is supplied, we need to wake up for the first task to
     # timeout if that is sooner.
     if timeout:
-        now = datetime.now()
+        now = datetime.utcnow()
         timeout_delta = timedelta(seconds=timeout)
         for task in tasks:
             remaining = task.start + timeout_delta - now
@@ -136,7 +136,7 @@ def timed_out(task, timeout):
     timed_out always returns False).
     """
     if timeout:
-        now = datetime.now()
+        now = datetime.utcnow()
         return (now - task.start) > timedelta(seconds=timeout)
     return False
 
@@ -175,7 +175,7 @@ def reap_zombies(tasks, timeout):
                 ''.join(ended.out),
                 ''.join(ended.err),
                 returncode,
-                (datetime.now() - ended.start).total_seconds(),
+                (datetime.utcnow() - ended.start).total_seconds(),
                 timed_out(ended, timeout)))
     return tasks, finished
 
diff --git a/js/src/tests/lib/tasks_win.py b/js/src/tests/lib/tasks_win.py
index 7a4540c60d..a99640abbf 100644
--- a/js/src/tests/lib/tasks_win.py
+++ b/js/src/tests/lib/tasks_win.py
@@ -36,7 +36,7 @@ def _do_work(qTasks, qResults, qWatch, prefix, run_skipped, timeout, show_cmd):
         cmd = test.get_command(prefix)
         if show_cmd:
             print(escape_cmdline(cmd))
-        tStart = datetime.now()
+        tStart = datetime.utcnow()
         proc = subprocess.Popen(cmd,
                                 stdout=subprocess.PIPE,
                                 stderr=subprocess.PIPE)
@@ -49,7 +49,7 @@ def _do_work(qTasks, qResults, qWatch, prefix, run_skipped, timeout, show_cmd):
         qWatch.put(TaskFinishedMarker)
 
         # Create a result record and forward to result processing.
-        dt = datetime.now() - tStart
+        dt = datetime.utcnow() - tStart
         result = TestOutput(test, cmd, out, err, proc.returncode, dt.total_seconds(),
                             dt > timedelta(seconds=timeout))
         qResults.put(result)