Adding check for dict

CONTRIBUTORS.txt

@@ -529,6 +529,9 @@ contributors:
 
 * Marcin Kurczewski (rr-): contributor
 
+* Tanvi Moharir: contributor
+  - Fix for invalid toml config
+
 * Eisuke Kawashima (e-kwsm): contributor
 
 * Daniel van Noord (DanielNoord): contributor

tests/config/test_config.py

@@ -124,3 +124,54 @@ def test_read_config_file() -> None:
     jobs, jobs_nr = options_manager_mix_in.cfgfile_parser.items(section)[1]
     assert jobs == "jobs"
     assert jobs_nr == "10"
+
+
+def test_toml_with_empty_list_for_plugins(tmp_path):
+    # This would check that there is no crash for when empty lists
+    # passed as plugins , refer #4580
+    config_file = tmp_path / "pyproject.toml"
+    config_file.write_text(
+        """
+[tool.pylint]
+disable = "logging-not-lazy,logging-format-interpolation"
+load-plugins = []
+"""
+    )
+    with pytest.raises(AttributeError):
+        check_configuration_file_reader(config_file)
+
+
+def test_toml_with_invalid_data_for_imports(tmp_path):
+    # This would test config with invalid data for imports section
+    # refer #4580
+    config_file = tmp_path / "pyproject.toml"
+    config_file.write_text(
+        """
+[tool.pylint."imports"]
+disable = [
+    "logging-not-lazy",
+    "logging-format-interpolation",
+]
+preferred-modules = { "a"="b" }
+"""
+    )
+    with pytest.raises(AttributeError):
+        check_configuration_file_reader(config_file)
+
+
+def test_toml_with_invalid_data_for_basic(tmp_path):
+    # This would test config with invalid data for basic section
+    # refer #4580
+    config_file = tmp_path / "pyproject.toml"
+    config_file.write_text(
+        """
+[tool.pylint."basic"]
+disable = [
+    "logging-not-lazy",
+    "logging-format-interpolation",
+]
+name-group = { "a"="b" }
+"""
+    )
+    with pytest.raises(AttributeError):
+        check_configuration_file_reader(config_file)