Hide ioactions, Add doc strings, Add tests

tests/test_chained_action_empty.py

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+import pytest
+
+from falyx.action import ChainedAction
+from falyx.exceptions import EmptyChainError
+
+@pytest.mark.asyncio
+async def test_chained_action_raises_empty_chain_error_when_no_actions():
+    """A ChainedAction with no actions should raise an EmptyChainError immediately."""
+    chain = ChainedAction(name="empty_chain", actions=[])
+
+    with pytest.raises(EmptyChainError) as exc_info:
+        await chain()
+
+    assert "No actions to execute." in str(exc_info.value)
+    assert "empty_chain" in str(exc_info.value)
+
+@pytest.mark.asyncio
+async def test_chained_action_raises_empty_chain_error_when_actions_are_none():
+    """A ChainedAction with None as actions should raise an EmptyChainError immediately."""
+    chain = ChainedAction(name="none_chain", actions=None)
+
+    with pytest.raises(EmptyChainError) as exc_info:
+        await chain()
+
+    assert "No actions to execute." in str(exc_info.value)
+    assert "none_chain" in str(exc_info.value)
+