tests/shell: add "--quick" option to skip slow tests (via NFT_TEST_SKIP_slow=y)

It's important to run (a part) of the tests in a timely manner.
Add an option to skip long running tests.

Thereby, add a more general NFT_TEST_SKIP_* mechanism.

This is related and inverse from "NFT_TEST_HAVE_json", where a test
can require [ "$NFT_TEST_HAVE_json" != n ] to run, but is skipped when
[ "$NFT_TEST_SKIP_slow" = y ].

Currently only NFT_TEST_SKIP_slow is supported. The user can set such
environment variables (or use the -Q|--quick command line option). The
configuration is printed in the test info.

Tests should check for [ "$NFT_TEST_SKIP_slow" = y ] so that the
variable has to be explicitly set to opt-out. For convenience, tests can
also add a

    # NFT_TEST_SKIP(NFT_TEST_SKIP_slow)

tag, which is evaluated by test-wrapper.sh. Or they can run a quick, reduced
part of the test, but then should still indicate to be skipped.

Mark 8 tests are as slow, that take longer than 5 seconds on my machine.
With this, a parallel wall time for the non-slow tests is only 7 seconds
(on my machine).

The ultimate point is to integrate a call to "tests/shell/run-tests.sh"
in a `make check` target. For development, you can then export
NFT_TEST_SKIP_slow=y and have a fast `make check`.

Signed-off-by: Thomas Haller <thaller@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/shell/testcases/transactions/30s-stress b/tests/shell/testcases/transactions/30s-stress
index 757e7639..4d5d1d8b 100755
--- a/tests/shell/testcases/transactions/30s-stress
+++ b/tests/shell/testcases/transactions/30s-stress
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# NFT_TEST_SKIP(NFT_TEST_SKIP_slow)
+
 runtime=30
 
 # allow stand-alone execution as well, e.g. '$0 3600'