finished tox tests for issue 57 fix

test/test_parser_corner_cases.py

@@ -0,0 +1,89 @@
+import unittest
+
+from dsmr_parser import telegram_specifications
+
+from dsmr_parser.objects import Telegram
+from dsmr_parser.objects import ProfileGenericObject
+from dsmr_parser.parsers import TelegramParser
+from dsmr_parser.parsers import ProfileGenericParser
+from dsmr_parser.profile_generic_specifications import BUFFER_TYPES
+from dsmr_parser.profile_generic_specifications import PG_HEAD_PARSERS
+from dsmr_parser.profile_generic_specifications import PG_UNIDENTIFIED_BUFFERTYPE_PARSERS
+from test.example_telegrams import TELEGRAM_V5
+
+
+class TestParserCornerCases(unittest.TestCase):
+    """ Test instantiation of Telegram object """
+
+    def test_power_event_log_empty_1(self):
+        # POWER_EVENT_FAILURE_LOG (1-0:99.97.0)
+        parser = TelegramParser(telegram_specifications.V4)
+        telegram = Telegram(TELEGRAM_V5, parser, telegram_specifications.V5)
+
+        object_type = ProfileGenericObject
+        testitem = telegram.POWER_EVENT_FAILURE_LOG
+        assert isinstance(testitem, object_type)
+        assert testitem.buffer_length == 0
+        assert testitem.buffer_type == '0-0:96.7.19'
+        buffer = testitem.buffer
+        assert isinstance(testitem.buffer, list)
+        assert len(buffer) == 0
+
+    def test_power_event_log_empty_2(self):
+        pef_parser = ProfileGenericParser(BUFFER_TYPES, PG_HEAD_PARSERS, PG_UNIDENTIFIED_BUFFERTYPE_PARSERS)
+        object_type = ProfileGenericObject
+
+        # Power Event Log with 0 items and no object type
+        pefl_line = r'1-0:99.97.0(0)()\r\n'
+        testitem = pef_parser.parse(pefl_line)
+
+        assert isinstance(testitem, object_type)
+        assert testitem.buffer_length == 0
+        assert testitem.buffer_type is None
+        buffer = testitem.buffer
+        assert isinstance(testitem.buffer, list)
+        assert len(buffer) == 0
+        assert testitem.values == [{'value': 0, 'unit': None}, {'value': None, 'unit': None}]
+        json = testitem.to_json()
+        assert json == '{"buffer_length": 0, "buffer_type": null, "buffer": []}'
+
+    def test_power_event_log_null_values(self):
+        pef_parser = ProfileGenericParser(BUFFER_TYPES, PG_HEAD_PARSERS, PG_UNIDENTIFIED_BUFFERTYPE_PARSERS)
+        object_type = ProfileGenericObject
+
+        # Power Event Log with 1 item and no object type and nno values for the item
+        pefl_line = r'1-0:99.97.0(1)()()()\r\n'
+        testitem = pef_parser.parse(pefl_line)
+
+        assert isinstance(testitem, object_type)
+        assert testitem.buffer_length == 1
+        assert testitem.buffer_type is None
+        buffer = testitem.buffer
+        assert isinstance(testitem.buffer, list)
+        assert len(buffer) == 1
+        assert testitem.values == [{'value': 1, 'unit': None}, {'value': None, 'unit': None},
+                                   {'value': None, 'unit': None}, {'value': None, 'unit': None}]
+        json = testitem.to_json()
+        assert json == \
+               '{"buffer_length": 1, "buffer_type": null, "buffer": [{"datetime": null, "value": null, "unit": null}]}'
+
+    def test_power_event_log_brackets_only(self):
+        # POWER_EVENT_FAILURE_LOG (1-0:99.97.0)
+        # Issue 57
+        # Test of an ill formatted empty POWER_EVENT_FAILURE_LOG, observed on some smartmeters
+        # The idea is that instead of failing, the parser converts it to an empty POWER_EVENT_FAILURE_LOG
+        pef_parser = ProfileGenericParser(BUFFER_TYPES, PG_HEAD_PARSERS, PG_UNIDENTIFIED_BUFFERTYPE_PARSERS)
+        object_type = ProfileGenericObject
+
+        pefl_line = r'1-0:99.97.0()\r\n'
+        testitem = pef_parser.parse(pefl_line)
+
+        assert isinstance(testitem, object_type)
+        assert testitem.buffer_length == 0
+        assert testitem.buffer_type is None
+        buffer = testitem.buffer
+        assert isinstance(testitem.buffer, list)
+        assert len(buffer) == 0
+        assert testitem.values == [{'value': 0, 'unit': None}, {'value': None, 'unit': None}]
+        json = testitem.to_json()
+        assert json == '{"buffer_length": 0, "buffer_type": null, "buffer": []}'