add time warp test script.

test/run_time_warp.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+# import datetime
+import os
+import sys
+import time
+from zoneinfo import ZoneInfo
+
+import time_machine
+
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+# set time zone
+_TZ = ZoneInfo("Europe/Berlin")
+# fake date and time
+# SOURCE_TIME = [2021, 2, 9, 5, 50, 0]
+
+# warp time by factor
+WARP_FACTOR = 1000
+
+
+# @time_machine.travel(datetime.datetime(*SOURCE_TIME, tzinfo=_TZ))
+def playlist_test():
+    get_source = GetSourceFromPlaylist()
+    stamp = time.time()
+    duration = 0
+
+    with time_machine.travel(stamp, tick=False) as traveller:
+        for src_cmd, node in get_source.next():
+            duration = node['out'] - node['seek']
+            messenger.info(f'Play: "{node["source"]}"')
+
+            warp_duration = duration / WARP_FACTOR
+            messenger.debug(f'warp duration: {warp_duration:.3f}')
+
+            time.sleep(warp_duration)
+            stamp += duration
+
+            traveller.move_to(stamp)
+
+
+if __name__ == '__main__':
+    from ffplayout.playlist import GetSourceFromPlaylist
+    from ffplayout.utils import messenger
+
+    try:
+        playlist_test()
+    except KeyboardInterrupt:
+        print('Interrupted')