✨ Enhance ShortTruncatedStr tests to cover additional edge cases for string length and whitespace handling

Author: pcrespov

packages/models-library/tests/test_basic_types.py

@@ -81,9 +81,24 @@ def test_short_truncated_string():
     assert (
         TypeAdapter(ShortTruncatedStr).validate_python("X" * curtail_length)
         == "X" * curtail_length
-    )
+    ), "Max length string should remain intact"
 
     assert (
         TypeAdapter(ShortTruncatedStr).validate_python("X" * (curtail_length + 1))
         == "X" * curtail_length
-    )
+    ), "Overlong string should be truncated exactly to max length"
+
+    assert (
+        TypeAdapter(ShortTruncatedStr).validate_python("X" * (curtail_length + 100))
+        == "X" * curtail_length
+    ), "Much longer string should still truncate to exact max length"
+
+    # below limit
+    assert TypeAdapter(ShortTruncatedStr).validate_python(
+        "X" * (curtail_length - 1)
+    ) == "X" * (curtail_length - 1), "Under-length string should not be modified"
+
+    # spaces are trimmed
+    assert (
+        TypeAdapter(ShortTruncatedStr).validate_python(" " * (curtail_length + 1)) == ""
+    ), "Only-whitespace string should become empty string"