diff --git a/test/testcrypt.lua b/test/testcrypt.lua
index 01038b7c..acb979f0 100644
--- a/test/testcrypt.lua
+++ b/test/testcrypt.lua
@@ -21,4 +21,14 @@ assert(desdecode(key, etext) == text)
 local etext = desencode(key, text, "pkcs7")
 assert(desdecode(key, etext, "pkcs7") == text)
 
+assert(desencode(key, "","pkcs7")=="/rlZt9RkL8s=")
+assert(desencode(key, "1","pkcs7")=="g6AtgJul6q0=")
+assert(desencode(key, "12","pkcs7")=="NefFpG+m1O4=")
+assert(desencode(key, "123","pkcs7")=="LDiFUdf0iew=")
+assert(desencode(key, "1234","pkcs7")=="T9u7dzBdi+w=")
+assert(desencode(key, "12345","pkcs7")=="AGgKdx/Qic8=")
+assert(desencode(key, "123456","pkcs7")=="ED5wLgc3Mnw=")
+assert(desencode(key, "1234567","pkcs7")=="mYo+BYIT41M=")
+assert(desencode(key, "12345678","pkcs7")=="ltACiHjVjIn+uVm31GQvyw==")
+
 skynet.start(skynet.exit)
\ No newline at end of file