assertTrue(result);
            assertFalse(response.isVerifyFailed());
        }

        @Test
        @DisplayName("Should handle signature verification failure")
        void testVerifySignatureFailure() {
            byte[] buffer = new byte[100];
            response.setDigest(mockDigest);
            when(mockDigest.verify(buffer, 0, 100, 0, response)).thenReturn(true);

            assertFalse(testBlock.isVerifyFailed());
        }

        @Test
        @DisplayName("Test verify signature failure")
        void testVerifySignatureFailure() {
            testBlock.setDigest(mockDigest);
            testBlock.setErrorCode(0);
            byte[] buffer = new byte[100];

Shinsuke Sugaya <******@****.***> 1755149504 +0900