04bbd6f0ff
The CguHandler class reads a given ts2phc config file and uses this to derive the nmea_serialport, pci address and cgu path. These values can be short-circuited if they are known in advance. From there, the cgu is read and parsed into a dict in order to easily derive the status of the various pins on the NIC. DmesgWatcher and GnssMonitor use an observer pattern. DmesgWatcher is the subject and follows entries in a dmesg log for patterns that GnssMonitor observers care about. It then updates the GnssMonitor observers with the matched entry allowing GnssMonitor to parse and handle the update as required. The DmesgWatcher can be extended to support other observer types in the future. GnssMonitor attaches to DmesgWatcher and performs the handling for changes in GNSS status. This includes sending the status change to a publisher which will be implemented in a future review. Unit tests are included for CguHandler and DmesgWatcher. GnssMonitor is covered by the tests as it is built off the functionality of CguHandler. Tox has been updated to automatically run the unit tests. Testing: Pass: Unit tests pass Story: 2010056 Task: 45500 Signed-off-by: Cole Walker <cole.walker@windriver.com> Change-Id: I4be477aa0fce8baa418a3ff450c6b998683ec10b
78 lines
3.8 KiB
Python
78 lines
3.8 KiB
Python
#
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# Copyright (c) 2022 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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import unittest
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import mock
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from trackingfunctionsdk.common.helpers.cgu_handler import CguHandler
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import os
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testpath = os.environ.get("TESTPATH", "")
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class CguHandlerTests(unittest.TestCase):
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testCguHandler = CguHandler(testpath + "test_input_files/ts2phc_valid.conf")
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missingCguHandler = CguHandler("./no_such_file.conf")
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invalidCguHandler = CguHandler(testpath + "test_input_files/ts2phc_invalid.conf")
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def test_get_gnss_nmea_serialport(self):
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# Test success path
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self.testCguHandler.get_gnss_nmea_serialport_from_ts2phc_config()
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self.assertEqual(self.testCguHandler.nmea_serialport, "/dev/ttyGNSS_1800_0")
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# Test missing / incorrect config file path
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with self.assertRaises(FileNotFoundError):
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self.missingCguHandler.get_gnss_nmea_serialport_from_ts2phc_config()
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# Test missing nmea_serialport in config
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self.invalidCguHandler.get_gnss_nmea_serialport_from_ts2phc_config()
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self.assertEqual(self.invalidCguHandler.nmea_serialport,
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None)
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def test_convert_nmea_serialport_to_pci_addr(self):
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# Test success path
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self.testCguHandler.get_gnss_nmea_serialport_from_ts2phc_config()
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self.testCguHandler.convert_nmea_serialport_to_pci_addr(testpath +
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"test_input_files/mock_dmesg")
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self.assertEqual(self.testCguHandler.pci_addr, "0000:18:00.0")
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# Test pci address not found
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self.testCguHandler.nmea_serialport = "/dev/ttyGNSS_not_present"
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self.testCguHandler.convert_nmea_serialport_to_pci_addr(testpath +
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"test_input_files/mock_dmesg")
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self.assertEqual(self.testCguHandler.pci_addr, None)
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@mock.patch('trackingfunctionsdk.common.helpers.cgu_handler.os.path')
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def test_get_cgu_path_from_pci_addr(self, mock_path):
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# Setup mock
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mock_path.exists.return_value = True
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self.testCguHandler.get_gnss_nmea_serialport_from_ts2phc_config()
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self.testCguHandler.convert_nmea_serialport_to_pci_addr(testpath +
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"test_input_files/mock_dmesg")
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self.testCguHandler.get_cgu_path_from_pci_addr()
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self.assertEqual(self.testCguHandler.cgu_path, "/ice/0000:18:00.0/cgu")
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mock_path.exists.return_value = False
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with self.assertRaises(FileNotFoundError):
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self.testCguHandler.get_cgu_path_from_pci_addr()
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def test_cgu_output_to_dict(self):
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reference_dict = {
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'input':
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{'CVL-SDP22': {'state': 'invalid', 'priority': {'EEC': '8', 'PPS': '8'}},
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'CVL-SDP20': {'state': 'invalid', 'priority': {'EEC': '15', 'PPS': '3'}},
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'C827_0-RCLKA': {'state': 'invalid', 'priority': {'EEC': '4', 'PPS': '4'}},
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'C827_0-RCLKB': {'state': 'invalid', 'priority': {'EEC': '5', 'PPS': '5'}},
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'SMA1': {'state': 'invalid', 'priority': {'EEC': '1', 'PPS': '1'}},
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'SMA2/U.FL2': {'state': 'invalid', 'priority': {'EEC': '2', 'PPS': '2'}},
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'GNSS-1PPS': {'state': 'valid', 'priority': {'EEC': '0', 'PPS': '0'}}},
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'EEC DPLL': {'Current reference': 'GNSS-1PPS', 'Status': 'locked_ho_ack'},
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'PPS DPLL': {'Current reference': 'GNSS-1PPS', 'Status': 'locked_ho_ack',
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'Phase offset': '295'}}
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self.testCguHandler.cgu_path = testpath + "test_input_files/mock_cgu_output"
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self.testCguHandler.read_cgu()
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self.testCguHandler.cgu_output_to_dict()
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self.assertDictEqual(self.testCguHandler.cgu_output_parsed, reference_dict)
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