[PATCH nft 4/4] meta: add tests for probability matching

[Florian Westphal <fw@strlen.de>]

Signed-off-by: Florian Westphal <fw@strlen.de>
---
 tests/py/any/meta.t         | 16 ++++++++++++++++
 tests/py/any/meta.t.payload | 15 +++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/tests/py/any/meta.t b/tests/py/any/meta.t
index c10297a..4fa961f 100644
--- a/tests/py/any/meta.t
+++ b/tests/py/any/meta.t
@@ -197,3 +197,19 @@ meta cgroup {1048577-1048578};ok;cgroup { 1048577-1048578}
 meta iif . meta oif { lo . eth0 };ok
 meta iif . meta oif . meta mark { lo . eth0 . 0x0000000a };ok
 meta iif . meta oif vmap { lo . eth0 : drop };ok
+
+meta probability 0.0000001;ok
+meta probability 0.5;ok;meta probability 0.5000000
+meta probability 0.9999999;ok
+
+# outside of supported precision range
+meta probability 0.00000001;fail
+meta probability 0.99999999;fail
+
+# meta probability cannot be used with operators
+meta probability eq 0.5;fail
+
+# not 0.xxx format
+meta probability 1.5;fail
+meta probability foobar;fail
+meta probability 0;fail
diff --git a/tests/py/any/meta.t.payload b/tests/py/any/meta.t.payload
index 9f7a6d9..7c5eb72 100644
--- a/tests/py/any/meta.t.payload
+++ b/tests/py/any/meta.t.payload
@@ -754,3 +754,18 @@ ip test-ip4 output
   [ meta load oif => reg 9 ]
   [ lookup reg 1 set map%d dreg 0 ]
 
+# meta probability 0.0000001
+ip test-ip4 input
+  [ meta load prandom => reg 1 ]
+  [ cmp lte reg 1 0xad010000 ]
+
+# meta probability 0.5
+ip test-ip4 input
+  [ meta load prandom => reg 1 ]
+  [ cmp lte reg 1 0xffffff7f ]
+
+# meta probability 0.9999999
+ip test-ip4 input
+  [ meta load prandom => reg 1 ]
+  [ cmp lte reg 1 0x51feffff ]
+
-- 
2.4.10