RPOPLPUSH tests added

TODO

@@ -3,7 +3,7 @@ VERSION 1.1 TODO
 * For now only the last argument gets integer encoded, so make sure that: 1) every multi bulk commands implemented will have the last arg that is indeed a value, and not used otherwise. 2) to explicitly call the function to encode the object in MSET and other commands where there are multiple "values".
 * Man pages for MSET MSETNX and SRANDMEMBER, Z-commands, ...
 * Use strcoll() to compare objects in sorted sets, like it already happens for SORT.
-* LPOPPUSH, EXPIRE, EXPIREAT, ZSCORE, SRANDMEMBER tests.
+* RPOPLPUSH, EXPIRE, EXPIREAT, ZSCORE, SRANDMEMBER tests.
 * Write docs for the "STORE" operaiton of SORT, and GET "#" option.
 * Append only mode: testing and a command to rebuild the log from scratch.
 * Redis-cli should be able to select a different DB than 0 using some switch.

redis.tcl

@@ -20,7 +20,7 @@ array set ::redis::multibulkarg {}
 
 # Flag commands requiring last argument as a bulk write operation
 foreach redis_bulk_cmd {
-    set setnx rpush lpush lset lrem sadd srem sismember echo getset smove zadd zrem zscore
+    set setnx rpush lpush lset lrem sadd srem sismember echo getset smove zadd zrem zscore rpoplpush
 } {
     set ::redis::bulkarg($redis_bulk_cmd) {}
 }

test-redis.tcl

@@ -257,6 +257,45 @@ proc main {server port} {
         format $err
     } {ERR*}
 
+    test {RPOPLPUSH base case} {
+        $r del mylist
+        $r rpush mylist a
+        $r rpush mylist b
+        $r rpush mylist c
+        $r rpush mylist d
+        set v1 [$r rpoplpush mylist newlist]
+        set v2 [$r rpoplpush mylist newlist]
+        set l1 [$r lrange mylist 0 -1]
+        set l2 [$r lrange newlist 0 -1]
+        list $v1 $v2 $l1 $l2
+    } {d c {a b} {c d}}
+
+    test {RPOPLPUSH with the same list as src and dst} {
+        $r del mylist
+        $r rpush mylist a
+        $r rpush mylist b
+        $r rpush mylist c
+        set l1 [$r lrange mylist 0 -1]
+        set v [$r rpoplpush mylist mylist]
+        set l2 [$r lrange mylist 0 -1]
+        list $l1 $v $l2
+    } {{a b c} c {c a b}}
+
+    test {RPOPLPUSH target list already exists} {
+        $r del mylist
+        $r del newlist
+        $r rpush mylist a
+        $r rpush mylist b
+        $r rpush mylist c
+        $r rpush mylist d
+        $r rpush newlist x
+        set v1 [$r rpoplpush mylist newlist]
+        set v2 [$r rpoplpush mylist newlist]
+        set l1 [$r lrange mylist 0 -1]
+        set l2 [$r lrange newlist 0 -1]
+        list $v1 $v2 $l1 $l2
+    } {d c {a b} {c d x}}
+
     test {RENAME basic usage} {
         $r set mykey hello
         $r rename mykey mykey1