Some bonus byte-sequence length validity tests

Inspired by reviewing 180f6d0 in #117
ethereum · Aug 18, 2022 · 2d3ab10 · 2d3ab10
1 parent 5a17b4e
commit 2d3ab10
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/tests/sedes/test_composite_sedes.py b/tests/sedes/test_composite_sedes.py
@@ -10,6 +10,8 @@
 from ssz.sedes import (
     Bitlist,
     Bitvector,
+    ByteList,
+    ByteVector,
     Container,
     List,
     UInt,
@@ -195,6 +197,25 @@ def test_homogeneous_sequence_length_boundary(
             sedes_type(element_type, length)
 
 
+@pytest.mark.parametrize(
+    ("sedes_type", "length", "is_valid"),
+    (
+        (ByteList, 0, True),
+        (ByteList, -1, False),
+        (ByteVector, 1, True),
+        (ByteVector, 0, False),
+    ),
+)
+def test_byte_sequence_length_boundary(
+    sedes_type, length, is_valid
+):
+    if is_valid:
+        sedes_type(length)
+    else:
+        with pytest.raises(ValueError):
+            sedes_type(length)
+
+
 @pytest.mark.parametrize(
     ("sedes_type", "length", "is_valid"),
     (