fix: tableToMarkdown IndexError when single-key dict value is empty list

Packs/Base/ReleaseNotes/1_41_71.md

@@ -0,0 +1,6 @@
+
+#### Scripts
+
+##### CommonServerPython
+
+- Fixed an issue in the ***tableToMarkdown*** function where passing a single-key dictionary with an empty list value and no explicit headers caused an `IndexError: list index out of range`.

Packs/Base/Scripts/CommonServerPython/CommonServerPython.py

@@ -2404,9 +2404,10 @@ def tableToMarkdown(name, t, headers=None, headerTransform=None, removeNull=Fals
     if not headers and isinstance(t, dict) and len(t.keys()) == 1:
         # in case of a single key, create a column table where each element is in a different row.
         headers = list(t.keys())
-        # if the value of the single key is a list, unpack it for creating a column table.
-        if isinstance(list(t.values())[0], list):
-            t = list(t.values())[0]
+        # if the value of the single key is a non-empty list, unpack it for creating a column table.
+        single_value = list(t.values())[0]
+        if isinstance(single_value, list) and single_value:
+            t = single_value
 
     if not isinstance(t, list):
         t = [t]

Packs/Base/Scripts/CommonServerPython/CommonServerPython_test.py

@@ -683,6 +683,20 @@ def test_single_key_dict():
         )
         assert table_single_key_dict_nested == expected_single_key_dict_nested_tbl
 
+    @staticmethod
+    def test_single_key_dict_with_empty_list():
+        """
+        Given:
+          - A single-key dict whose value is an empty list, and no explicit headers.
+        When:
+          - Calling tableToMarkdown.
+        Then:
+          - Should return a 'No entries.' table without raising an IndexError.
+        """
+        table = tableToMarkdown('tableToMarkdown test with single key dict and empty list',
+                                {'Name Servers': []})
+        assert '|Name Servers|\n|---|\n|  |' in table
+
     @staticmethod
     def test_dict_with_special_character():
         """

Packs/Base/pack_metadata.json

@@ -2,7 +2,7 @@
     "name": "Base",
     "description": "The base pack for Cortex XSOAR.",
     "support": "xsoar",
-    "currentVersion": "1.41.70",
+    "currentVersion": "1.41.71",
     "author": "Cortex XSOAR",
     "serverMinVersion": "6.0.0",
     "url": "https://www.paloaltonetworks.com/cortex",