tests: shell: interval sets with size

Exercise size in set with intervals (rbtree), including corner cases
such as 0.0.0.0 and 255.255.255.255 (half-open interval).

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/tests/shell/testcases/sets/interval_size b/tests/shell/testcases/sets/interval_size
new file mode 100755 (executable)
index 0000000..6d07596
--- /dev/null
+++ b/tests/shell/testcases/sets/interval_size
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+RULESET="table inet x {
+       set x {
+               typeof ip saddr
+               flags interval
+               auto-merge
+               size 1
+       }
+
+       set y {
+               typeof ip saddr
+               flags interval
+               size 1
+       }
+}"
+
+$NFT -f - <<< $RULESET
+
+$NFT add element inet x x '{ 0.0.0.0, 255.255.255.255 }' && exit 1
+$NFT add element inet x x '{ 0.0.0.0 }' || exit 1
+$NFT add element inet x x '{ 255.255.255.0/24 }' && exit 1
+$NFT delete element inet x x '{ 0.0.0.0 }' || exit 1
+$NFT add element inet x x '{ 255.255.255.0/24 }' || exit 1
+$NFT add element inet x x '{ 0.0.0.0 }' && exit 1
+$NFT add element inet x x '{ 0.0.0.0-255.255.255.0 }' || exit 1
+$NFT delete element inet x x '{ 1.1.1.1 }' && exit 1
+$NFT delete element inet x x '{ 0.0.0.0/0 }' || exit 1
+$NFT add element inet x x '{ 255.255.255.0/24 }' || exit 1
+$NFT add element inet x x '{ 0.0.0.0 }' && exit 1
+
+$NFT add element inet x y '{ 0.0.0.0, 255.255.255.255 }' && exit 1
+$NFT add element inet x y '{ 0.0.0.0 }' || exit 1
+$NFT add element inet x y '{ 255.255.255.0/24 }' && exit 1
+$NFT delete element inet x y '{ 0.0.0.0 }' || exit 1
+$NFT add element inet x y '{ 255.255.255.0/24 }' || exit 1
+$NFT add element inet x y '{ 0.0.0.0 }' && exit 1
+$NFT add element inet x y '{ 0.0.0.0-255.255.255.0 }' && exit 1
+$NFT delete element inet x y '{ 255.255.255.0/24 }' || exit 1
+$NFT add element inet x y '{ 0.0.0.0 }' || exit 1
+$NFT add element inet x y '{ 255.255.255.255 }' && exit 1
+exit 0