test: add coverage for CLI utility functions (#7422)

Co-authored-by: Danglewood <85772166+deeleeramone@users.noreply.github.com>

Author: Bortlesboat

cli/tests/test_controllers_utils.py

@@ -6,13 +6,16 @@
 
 import pytest
 from openbb_cli.controllers.utils import (
+    check_file_type_saved,
     check_non_negative,
     check_positive,
     get_flair_and_username,
     get_user_agent,
     parse_and_split_input,
+    parse_unknown_args_to_dict,
     print_goodbye,
     remove_file,
+    validate_register_key,
     welcome_message,
 )
 
@@ -138,3 +141,100 @@ def test_get_user_agent():
     """Test getting the user agent."""
     result = get_user_agent()
     assert result.startswith("Mozilla/5.0")
+
+
+# --- Tests for parse_unknown_args_to_dict ---
+
+
+@pytest.mark.parametrize(
+    "args, expected",
+    [
+        (["--key", "value"], {"key": "value"}),
+        (["--a", "1", "--b", "hello"], {"a": 1, "b": "hello"}),
+        (["--flag"], {}),
+        (None, {}),
+        ([], {}),
+    ],
+)
+def test_parse_unknown_args_to_dict_basic(args, expected, mock_session):
+    """Test basic key-value parsing and edge cases."""
+    result = parse_unknown_args_to_dict(args)
+    assert result == expected
+
+
+@pytest.mark.parametrize(
+    "args, expected",
+    [
+        (["--num", "42"], {"num": 42}),
+        (["--pi", "3.14"], {"pi": 3.14}),
+        (["--items", "[1, 2, 3]"], {"items": [1, 2, 3]}),
+        (["--mapping", "{'a': 1}"], {"mapping": {"a": 1}}),
+        (["--bool", "True"], {"bool": True}),
+        (["--plain", "not-a-literal"], {"plain": "not-a-literal"}),
+    ],
+)
+def test_parse_unknown_args_to_dict_literal_eval(args, expected, mock_session):
+    """Test that ast.literal_eval correctly parses typed values."""
+    result = parse_unknown_args_to_dict(args)
+    assert result == expected
+
+
+def test_parse_unknown_args_to_dict_missing_value(mock_session):
+    """Test that a trailing --flag with no value prints a warning."""
+    result = parse_unknown_args_to_dict(["--orphan"])
+    assert result == {}
+    mock_session.console.print.assert_called_once()
+
+
+# --- Tests for validate_register_key ---
+
+
+@pytest.mark.parametrize(
+    "key, should_raise",
+    [
+        ("my_api_key", False),
+        ("secret_123", False),
+        ("OBB_KEY", True),
+        ("my_OBB_key", True),
+        ("OBB", True),
+    ],
+)
+def test_validate_register_key(key, should_raise):
+    """Test that keys containing 'OBB' are rejected."""
+    if should_raise:
+        with pytest.raises(argparse.ArgumentTypeError, match="OBB"):
+            validate_register_key(key)
+    else:
+        assert validate_register_key(key) == key
+
+
+# --- Tests for check_file_type_saved ---
+
+
+def test_check_file_type_saved_valid(mock_session):
+    """Test valid filenames are accepted."""
+    checker = check_file_type_saved(valid_types=[".csv", ".json"])
+    assert checker("report.csv") == "report.csv"
+    assert checker("data.json") == "data.json"
+    assert checker("a.csv,b.json") == "a.csv,b.json"
+
+
+def test_check_file_type_saved_invalid(mock_session):
+    """Test invalid filenames are rejected with a warning."""
+    checker = check_file_type_saved(valid_types=[".csv"])
+    result = checker("report.xlsx")
+    assert result == ""
+    mock_session.console.print.assert_called()
+
+
+def test_check_file_type_saved_empty(mock_session):
+    """Test empty input returns empty string."""
+    checker = check_file_type_saved(valid_types=[".csv"])
+    assert checker("") == ""
+    assert checker() == ""
+
+
+def test_check_file_type_saved_no_valid_types(mock_session):
+    """Test that None valid_types returns empty string."""
+    checker = check_file_type_saved(valid_types=None)
+    assert checker("anything.csv") == ""