items: Add Link order

2 files changed, 9 insertions, 0 deletions

diff --git a/rtemsspec/items.py b/rtemsspec/items.py
index 4b0d2600..30af77f3 100644
--- a/rtemsspec/items.py
+++ b/rtemsspec/items.py
@@ -133,6 +133,12 @@ class Link:
     def __setitem__(self, key: str, value: Any) -> None:
         self._data[key] = value
 
+    def __lt__(self, other: Any) -> bool:
+        if not isinstance(other, Link):
+            return NotImplemented
+        # pylint: disable=protected-access
+        return self._item.uid < other._item.uid
+
     @property
     def item(self) -> "Item":
         """ The item referenced by this link. """
diff --git a/rtemsspec/tests/test_items_item.py b/rtemsspec/tests/test_items_item.py
index 1f107e56..8208bb9c 100644
--- a/rtemsspec/tests/test_items_item.py
+++ b/rtemsspec/tests/test_items_item.py
@@ -154,6 +154,9 @@ def test_children():
     assert len(children) == 0
     links = [link for link in parent.links_to_children()]
     assert len(links) == 1
+    assert not links[0] < links[0]
+    with pytest.raises(TypeError):
+        links[0] < 0
     assert links[0].item == child
     assert links[0]["a"] == "b"
     assert links[0].role == "c"