diff --git a/src/jsrsasign_patch_test.js b/src/jsrsasign_patch_test.js
index d2c64c7..be60052 100644
--- a/src/jsrsasign_patch_test.js
+++ b/src/jsrsasign_patch_test.js
@@ -1,51 +1,8 @@
 const test = require('tape')
 const rs = require('jsrsasign')
 const KJUR = rs.KJUR
-const C = rs.CryptoJS
 require('./jsrsasign_patch').patch()
 
-test('test sm4-cbc with default mode', (t) => {
-  const cases = [
-    {
-      key: '30313233343536373839414243444546',
-      iv: '30313233343536373839414243444546',
-      plaintext: '48656c6c6f20576f726c64',
-      ciphertext: '0a67062f0cd2dce26a7b978ebf2134f9'
-    },
-    {
-      key: '30313233343536373839414243444546',
-      iv: '30313233343536373839414243444546',
-      plaintext:
-          '48656c6c6f20576f726c642048656c6c6f20576f726c642048656c6c6f20576f726c642048656c6c6f20576f726c6464',
-      ciphertext:
-          'd31e3683e4fc9b516a2c0f983676a9eb1fdcc32af38408978157a2065de34c6a068d0fef4e2bfab4bcaba66441fde0fe92c164eca170247572de1202952ec727'
-    },
-    {
-      key: '0123456789abcdeffedcba9876543210',
-      iv: '00000000000000000000000000000000',
-      plaintext: '0123456789abcdeffedcba9876543210',
-      ciphertext:
-          '681edf34d206965e86b3e94f536e4246677d307e844d7aa24579d556490dc7aa'
-    }
-  ]
-  for (const c of cases) {
-    const ciphertext = C.SM4.encrypt(
-      C.enc.Hex.parse(c.plaintext),
-      C.enc.Hex.parse(c.key),
-      { iv: C.enc.Hex.parse(c.iv) }
-    ).ciphertext.toString()
-
-    t.equal(ciphertext, c.ciphertext)
-    const plaintext = C.SM4.decrypt(
-      { ciphertext: C.enc.Hex.parse(c.ciphertext) },
-      C.enc.Hex.parse(c.key),
-      { iv: C.enc.Hex.parse(c.iv) }
-    )
-    t.equal(plaintext.toString(), c.plaintext)
-  }
-  t.end()
-})
-
 test('test sm4-cbc with KJUR.crypto.Cipher', (t) => {
   const cases = [
     {