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Date:   Tue, 5 Sep 2023 15:00:23 +0200
From:   Phil Sutter <phil@nwl.cc>
To:     Florian Westphal <fw@strlen.de>
Cc:     netfilter-devel@vger.kernel.org
Subject: Re: [PATCH nft 1/5] tests: add feature probing
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On Mon, Sep 04, 2023 at 11:06:30AM +0200, Florian Westphal wrote:
> Running selftests on older kernels makes some of them fail very early
> because some tests use features that are not available on older
> kernels, e.g. -stable releases.
> 
> Known examples:
> - inner header matching
> - anonymous chains
> - elem delete from packet path
> 
> Also, some test cases might fail because a feature isn't
> compiled in, such as netdev chains for example.
> 
> This adds a feature-probing to the shell tests.
> 
> Simply drop a 'nft -f' compatible file with a .nft suffix into
> tests/shell/features.
> 
> run-tests.sh will load it via --check and will add
> 
> NFT_TESTS_HAVE_${filename}=$?

Maybe make this:

| truefalse=(true false)
| NFT_TESTS_HAVE_${filename}=${truefalse[$?]}

[...]

> [ $NFT_HAVE_chain_binding -eq 1 ] && test_chain_binding

So this becomes:

| $NFT_HAVE_chain_binding && test_chain_binding

Use of true/false appears to work in dash, so might be POSIX sh
compatible?

Cheers, Phil