+
+ test {BITOP with integer encoded source objects} {
+ r set a 1
+ r set b 2
+ r bitop xor dest a b a
+ r get dest
+ } {2}
+
+ test {BITOP with non string source key} {
+ r del c
+ r set a 1
+ r set b 2
+ r lpush c foo
+ catch {r bitop xor dest a b c d} e
+ set e
+ } {*ERR*}