add a test

charles-cooper · Feb 21, 2025 · 63f3648 · 63f3648
1 parent 49434d5
commit 63f3648
Showing 1 changed file with 16 additions and 1 deletion.
diff --git a/tests/functional/codegen/features/test_assignment.py b/tests/functional/codegen/features/test_assignment.py
@@ -1,6 +1,6 @@
 import pytest
 
-from vyper.exceptions import ImmutableViolation, InvalidType, TypeMismatch
+from vyper.exceptions import CodegenPanic, ImmutableViolation, InvalidType, TypeMismatch
 
 
 def test_augassign(get_contract):
@@ -39,6 +39,21 @@ def augmod(x: int128, y: int128) -> int128:
     print("Passed aug-assignment test")
 
 
+@pytest.mark.xfail(strict=True, raises=CodegenPanic)
+def test_augassign_oob(get_contract, tx_failed):
+    code = """
+def poc():
+    a: DynArray[uint256, 2] = [1, 2]
+    a[1] += a.pop()
+    """
+    # xfail here (with panic):
+    c = get_contract(code)
+
+    # not reached until the panic is fixed
+    with tx_failed(c):
+        c.poc()
+
+
 @pytest.mark.parametrize(
     "typ,in_val,out_val",
     [