chore: import upstream snapshot with attribution

python/tests/unit/kernel/test_register_functions.py

@@ -0,0 +1,32 @@
+# Copyright (c) Microsoft. All rights reserved.
+
+
+from collections.abc import Callable
+
+import pytest
+from pydantic import ValidationError
+
+from semantic_kernel import Kernel
+from semantic_kernel.exceptions.function_exceptions import FunctionInitializationError
+from semantic_kernel.functions.kernel_arguments import KernelArguments
+from semantic_kernel.functions.kernel_function import KernelFunction
+
+
+async def test_register_valid_native_function(kernel: Kernel, decorated_native_function: Callable):
+    kernel.add_function(plugin_name="TestPlugin", function=decorated_native_function)
+    registered_func = kernel.get_function(plugin_name="TestPlugin", function_name="getLightStatus")
+
+    assert isinstance(registered_func, KernelFunction)
+    assert kernel.get_function(plugin_name="TestPlugin", function_name="getLightStatus") == registered_func
+    func_result = await registered_func.invoke(kernel, KernelArguments(arg1="testtest"))
+    assert str(func_result) == "test"
+
+
+def test_register_undecorated_native_function(kernel: Kernel, not_decorated_native_function: Callable):
+    with pytest.raises(FunctionInitializationError):
+        kernel.add_function("TestPlugin", not_decorated_native_function)
+
+
+def test_register_with_none_plugin_name(kernel: Kernel, decorated_native_function: Callable):
+    with pytest.raises(ValidationError):
+        kernel.add_function(function=decorated_native_function, plugin_name=None)