fix for the fetch incidents last_run of ThreatConnectV3 (#28935)

* fixed the last_run of ThreatconnectV3 + added some UT

* 2 more tests for the fetch

* fixed an issue with the fetch-indicents parameters

* Added release notes and updated docker image

* Bump pack from version ThreatConnect to 3.0.10.

* updated release notes after auto-bump

---------

Co-authored-by: Content Bot <bot@demisto.com>

Packs/ThreatConnect/Integrations/ThreatConnectV3/ThreatConnectV3.py

@@ -411,23 +411,30 @@ def integration_test(client: Client, args: dict) -> None:  # pragma: no cover
     return_results('ok')
 
 
-def get_last_run_time(groups: list) -> str:
-    latest_date = datetime(1, 1, 1, 0, 0)
+def get_last_run_time(groups: list, last_run: str) -> str:
+    latest_date = dateparser.parse(last_run)
+    if not latest_date:
+        raise DemistoException(f'There was a problem parsing {last_run=} with dateparser.parse')
+
     for group in groups:
-        group_date = datetime.strptime(group.get('dateAdded'), '%Y-%m-%dT%H:%M:%SZ')
-        if group_date > latest_date:
+        try:
+            group_date = datetime.strptime(group.get('dateAdded'), '%Y-%m-%dT%H:%M:%SZ')
+        except Exception as e:
+            demisto.debug(f'Error parsing group date, value {group.get("dateAdded")=} error message {e}')
+            raise e
+
+        if group_date and group_date > latest_date:
             latest_date = group_date
+
     return latest_date.isoformat()
 
 
 def convert_to_dict(arr: list):
-    new_dict = {}
-    for item in arr:
-        new_dict[item] = True
+    new_dict = {item: True for item in arr}
     return new_dict
 
 
-def fetch_incidents(client: Client, args: dict) -> None:  # pragma: no cover
+def fetch_incidents(client: Client, *args) -> str:
     params = demisto.params()
     tags = params.get('tags', '')
     if tags == 'None':
@@ -443,15 +450,19 @@ def fetch_incidents(client: Client, args: dict) -> None:  # pragma: no cover
         last_run = f"{params.get('first_fetch') or '3 days'} ago"
         last_run = dateparser.parse(last_run)
 
+    last_run = str(last_run)
     response = list_groups(client, {}, group_type=group_type, fields=fields, return_raw=True, tag=tags,
                            status=status, from_date=last_run, limit=max_fetch, sort='&sorting=dateAdded%20ASC')
-    incidents = []
-    for incident in response:
-        incidents.append(detection_to_incident(incident, incident.get('dateAdded')))
+    incidents: list = []
+    incidents.extend(
+        detection_to_incident(incident, incident.get('dateAdded'))
+        for incident in response
+    )
     demisto.incidents(incidents)
-    set_last = get_last_run_time(response)
-    demisto.debug('Setting last run to: ' + set_last)
+    set_last = get_last_run_time(response, last_run)
+    demisto.debug(f'Setting last run to: {set_last}')
     demisto.setLastRun({'last': set_last})
+    return set_last
 
 
 def tc_fetch_incidents_command(client: Client, args: dict) -> None:  # pragma: no cover

Packs/ThreatConnect/Integrations/ThreatConnectV3/ThreatConnectV3_test.py

@@ -1,5 +1,8 @@
-from ThreatConnectV3 import Client, Method, create_or_query, create_context, get_last_run_time, list_groups
+import dateparser
+from ThreatConnectV3 import Client, Method, create_or_query, create_context, get_last_run_time, list_groups, fetch_incidents
 from freezegun import freeze_time
+import pytest
+import demistomock as demisto
 
 client = Client('test', 'test', 'test', False)
 
@@ -17,11 +20,60 @@ def test_create_or_query():
     assert create_or_query('1,2,3,4,5', 'test', '') == 'test=1 OR test=2 OR test=3 OR test=4 OR test=5 '
 
 
-def test_get_last_run_time():
-    groups = [{'dateAdded': '2022-08-04T12:35:33Z'}, {'dateAdded': '2022-09-06T12:35:33Z'},
-              {'dateAdded': '2022-03-06T12:35:33Z'}, {'dateAdded': '2022-09-06T12:36:33Z'},
-              {'dateAdded': '2022-08-06T11:35:33Z'}, ]
-    assert get_last_run_time(groups) == '2022-09-06T12:36:33'
+@pytest.fixture
+def groups_fixture() -> list:
+    return [{'dateAdded': '2022-08-04T12:35:33Z'}, {'dateAdded': '2022-09-06T12:35:33Z'},
+            {'dateAdded': '2022-03-06T12:35:33Z'}, {'dateAdded': '2022-09-06T12:36:33Z'},
+            {'dateAdded': '2022-08-06T11:35:33Z'}]
+
+
+@pytest.mark.parametrize('last_run, expected_result', [('2022-07-04T12:35:33', '2022-09-06T12:36:33'),
+                                                       ('2023-07-04T12:35:33', '2023-07-04T12:35:33')])
+def test_get_last_run_time(last_run, expected_result, groups_fixture):
+    """
+    Given:
+        - a response containing groups with last_run time and the previos last run_time.
+    When:
+        - Checking for the next last_run.
+    Then:
+        - Validate that the correct last run is set.
+    """
+    assert get_last_run_time(groups_fixture, last_run) == expected_result
+
+
+def test_get_last_run_no_groups():
+    """
+    Given:
+        - no grops were found.
+    When:
+        - checking for the next last_run.
+    Then:
+        - validate that the last run remains as it was before in the previos round.
+    """
+    assert get_last_run_time([], '2022-07-04T12:35:33') == '2022-07-04T12:35:33'
+
+
+def test_fetch_incidents_first_run(mocker):
+    """
+    Given:
+        - getLastRun is empty (first run)
+    When:
+        - calling fetch_events
+    Then:
+        - Validate that the last run is set properly
+    """
+    import ThreatConnectV3
+    mocker.patch.object(demisto, 'getLastRun', return_value={})
+    mocker.patch.object(dateparser, 'parse', return_value=dateparser.parse('2022-08-04T12:35:33'))
+    mocker.patch.object(ThreatConnectV3, 'list_groups', return_value=[])
+    assert fetch_incidents(client) == '2022-08-04T12:35:33'
+
+
+def test_fetch_incidents_not_first_run(mocker, groups_fixture):
+    import ThreatConnectV3
+    mocker.patch.object(demisto, 'getLastRun', return_value={'last': '2021-08-04T12:35:33'})
+    mocker.patch.object(ThreatConnectV3, 'list_groups', return_value=groups_fixture)
+    assert fetch_incidents(client, {}) == '2022-09-06T12:36:33'
 
 
 def test_create_context():  # type: ignore # noqa

Packs/ThreatConnect/ReleaseNotes/3_0_10.md

@@ -0,0 +1,5 @@
+
+#### Integrations
+
+##### ThreatConnect v3
+- Fixed an issue where the ***fetch-incident*** command didn't correctly update the fetch time. 

Packs/ThreatConnect/pack_metadata.json

@@ -2,7 +2,7 @@
     "name": "ThreatConnect",
     "description": "Threat intelligence platform.",
     "support": "xsoar",
-    "currentVersion": "3.0.9",
+    "currentVersion": "3.0.10",
     "author": "Cortex XSOAR",
     "url": "https://www.paloaltonetworks.com/cortex",
     "email": "",