[PATCH nft,v3] tests: shell: fix spurious errors in sets/0036add_set_element_expiration_0

[Pablo Neira Ayuso <pablo@netfilter.org>]

A number of changes to fix spurious errors:

- Add seconds as expiration, otherwise 14m59 reports 14m in minute
  granularity, this ensures suficient time in a very slow environment with
  debugging instrumentation.

- Provide expected output.

- Update sed regular expression to make 'ms' optional and use -E mode.

Fixes: adf38fd84257 ("tests: shell: use minutes granularity in sets/0036add_set_element_expiration_0")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
v3: - [ "$test_output" != "$EXPECTED" ], not [ "$test_output" != "$RULESET" ]
    - Make 'ms' optional in sed regular expression
    - Use -E in sed

 .../testcases/sets/0036add_set_element_expiration_0    | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tests/shell/testcases/sets/0036add_set_element_expiration_0 b/tests/shell/testcases/sets/0036add_set_element_expiration_0
index 12f10074409f..0fd016e9f857 100755
--- a/tests/shell/testcases/sets/0036add_set_element_expiration_0
+++ b/tests/shell/testcases/sets/0036add_set_element_expiration_0
@@ -3,17 +3,21 @@
 set -e
 
 drop_seconds() {
-       sed 's/m[0-9]*s[0-9]*ms/m/g'
+	sed -E 's/m[0-9]*s([0-9]*ms)?/m/g'
 }
 
 RULESET="add table ip x
+add set ip x y { type ipv4_addr; flags dynamic,timeout; }
+add element ip x y { 1.1.1.1 timeout 30m expires 15m59s }"
+
+EXPECTED="add table ip x
 add set ip x y { type ipv4_addr; flags dynamic,timeout; } 
 add element ip x y { 1.1.1.1 timeout 30m expires 15m }"
 
 test_output=$($NFT -e -f - <<< "$RULESET" 2>&1 | grep -v '# new generation' | drop_seconds)
 
-if [ "$test_output" != "$RULESET" ] ; then
-	$DIFF -u <(echo "$test_output") <(echo "$RULESET")
+if [ "$test_output" != "$EXPECTED" ] ; then
+	$DIFF -u <(echo "$test_output") <(echo "$EXPECTED")
 	exit 1
 fi
 
-- 
2.30.2