add simple unit test for device_iterator

Author: denniszollo

python/tests/sbp/client/test_logger.py

@@ -13,9 +13,12 @@
 from sbp.client.loggers.base_logger import LogIterator
 from sbp.client.loggers.json_logger import JSONLogIterator, MultiJSONLogIterator
 from sbp.client.loggers.pickle_logger import PickleLogIterator
+from sbp.client.loggers.device_iterator import DeviceIterator
 from sbp.logging import SBP_MSG_PRINT
+from sbp.acquisition import SBP_MSG_ACQ_RESULT, MsgAcqResult
 from sbp.table import _SBP_TABLE, dispatch
 from sbp.table import InvalidSBPMessageType
+from sbp.client.handler import Handler
 import pytest
 import warnings
 
@@ -151,3 +154,22 @@ def test_msg_print():
       assert len(w) == 1
       assert issubclass(w[0].category, RuntimeWarning)
       assert str(w[0].message).startswith('Bad message parsing for line')
+
+def test_device_iterator():
+  """
+  device iterator sanity tests.
+  """
+  log_datafile = "data/one_msg.bin"
+  handle = open(log_datafile, 'r')
+  myhandler = Handler(handle.read, None, verbose=True)
+  mydevice_iterator = DeviceIterator(myhandler, 0.5)
+  myhandler.start()
+  for delta, timestamp, msg in mydevice_iterator:
+    assert delta > 0
+    assert timestamp >0
+    assert type(msg) == MsgAcqResult
+      #     warnings.simplefilter("always")
+      # Check for warnings.
+      #assert len(w) == 1
+      #assert issubclass(w[0].category, RuntimeWarning)
+      #assert str(w[0].message).startswith('Bad message parsing for line')