new(tests): EOF - EIP-7620: Dangling data in subcontainer test (#812)

* Dangling data in subcontainer test

Test dangling data inside a subcontainer

Signed-off-by: Danno Ferrin <[email protected]>

* style fix

Signed-off-by: Danno Ferrin <[email protected]>

* remove duplicate test

Signed-off-by: Danno Ferrin <[email protected]>

* sections sizes should match

Signed-off-by: Danno Ferrin <[email protected]>

---------

Signed-off-by: Danno Ferrin <[email protected]>

Author: shemnon

tests/prague/eip7692_eof_v1/eip7620_eof_create/test_subcontainer_validation.py

@@ -789,3 +789,42 @@ def test_migrated_eofcreate(eof_test: EOFTestFiller, container: Container):
     Tests migrated from EOFTests/efValidation/EOF1_eofcreate_valid_.json.
     """
     eof_test(data=container, expect_exception=container.validity_error)
+
+
+def test_dangling_initcode_subcontainer_bytes(
+    eof_test: EOFTestFiller,
+):
+    """Initcode mode EOF Subcontainer test with subcontainer containing dangling bytes."""
+    eof_test(
+        data=Container(
+            sections=[
+                returncontract_code_section,
+                Section.Container(
+                    container=Container(
+                        raw_bytes=stop_sub_container.data + b"\x99",
+                    ),
+                ),
+            ],
+            kind=ContainerKind.INITCODE,
+        ),
+        expect_exception=EOFException.INVALID_SECTION_BODIES_SIZE,
+    )
+
+
+def test_dangling_runtime_subcontainer_bytes(
+    eof_test: EOFTestFiller,
+):
+    """Runtime mode EOF Subcontainer test with subcontainer containing dangling bytes."""
+    eof_test(
+        data=Container(
+            sections=[
+                eofcreate_code_section,
+                Section.Container(
+                    container=Container(
+                        raw_bytes=returncontract_sub_container.data + b"\x99",
+                    ),
+                ),
+            ],
+        ),
+        expect_exception=EOFException.INVALID_SECTION_BODIES_SIZE,
+    )