feat(tests): EIP-198 modexp cases with truncated inputs

Test case authored by Category Labs team in category-labs/monad#2045

Co-authored-by: Baltoli <1329034+Baltoli@users.noreply.github.com>

Author: pdobacz

tests/byzantium/eip198_modexp_precompile/test_modexp.py

@@ -399,6 +399,56 @@
             ),
             id="mod-264-even-ctz-48",
         ),
+        pytest.param(
+            Bytes(
+                "0x00000000000000000000000000000000"
+                "0000000000000000100000000000000000000000000000000"
+                "0000000000000000000000000000000100000000000000000"
+                "000000000000000000000000000000005"
+            ),
+            ModExpOutput(
+                call_success=False,
+                returned_data="0000000000000000000000000000000000000000000000000000000000000000",
+            ),
+            id="truncated_input1",
+        ),
+        pytest.param(
+            Bytes(
+                "0x00000000000000000000000000000000000000000"
+                "0000000000000000000000100000000000000000000"
+                "00000000000000000000000000000005"
+            ),
+            ModExpOutput(
+                call_success=False,
+                returned_data="0000000000000000000000000000000000000000000000000000000000000000",
+            ),
+            id="truncated_input2",
+        ),
+        pytest.param(
+            Bytes(
+                "0x00000000000000000000000000000000000000000000000000000500"
+            ),
+            ModExpOutput(
+                call_success=False,
+                returned_data="0000000000000000000000000000000000000000000000000000000000000000",
+            ),
+            id="truncated_input3",
+        ),
+        pytest.param(
+            Bytes(
+                "0x00000000000000000000000000000000000"
+                "000000000000000000000"
+                "0000000100000000000000000000000000000"
+                "000000000000000000000"
+                "0000000000000200000000000000000000000"
+                "000000000000000000000"
+                "000000000000000000050201"
+            ),
+            ModExpOutput(
+                returned_data="0x0000000000",
+            ),
+            id="truncated_input4",
+        ),
     ],
     ids=lambda param: param.__repr__(),  # only required to remove parameter
     # names (input/output)