Re: [PATCH v4 3/7] test-reach: add rev-list tests

From: Jakub Narebski <jnareb@gmail.com>
To: "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, Jeff King <peff@peff.net>,
	Junio C Hamano <gitster@pobox.com>,
	Derrick Stolee <dstolee@microsoft.com>
Subject: Re: [PATCH v4 3/7] test-reach: add rev-list tests
Date: Sun, 21 Oct 2018 12:21:36 +0200	[thread overview]
Message-ID: <865zxvior3.fsf@gmail.com> (raw)
In-Reply-To: <12a3f6d3670834f19b38f5e23ef83cdf80a58c33.1539729393.git.gitgitgadget@gmail.com> (Derrick Stolee via GitGitGadget's message of "Tue, 16 Oct 2018 15:36:41 -0700 (PDT)")

"Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com> writes:

> From: Derrick Stolee <dstolee@microsoft.com>
>
> The rev-list command is critical to Git's functionality. Ensure it
> works in the three commit-graph environments constructed in
> t6600-test-reach.sh. Here are a few important types of rev-list
> operations:
>
> * Basic: git rev-list --topo-order HEAD
> * Range: git rev-list --topo-order compare..HEAD
> * Ancestry: git rev-list --topo-order --ancestry-path compare..HEAD
> * Symmetric Difference: git rev-list --topo-order compare...HEAD

Could you remind us here which of those operations will be using
generation numbers after this patch series?

> Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
> ---
>  t/t6600-test-reach.sh | 84 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 84 insertions(+)
>
> diff --git a/t/t6600-test-reach.sh b/t/t6600-test-reach.sh
> index 9d65b8b946..288f703b7b 100755
> --- a/t/t6600-test-reach.sh
> +++ b/t/t6600-test-reach.sh
> @@ -243,4 +243,88 @@ test_expect_success 'commit_contains:miss' '
>  	test_three_modes commit_contains --tag
>  '
>  
> +test_expect_success 'rev-list: basic topo-order' '
> +	git rev-parse \
> +		commit-6-6 commit-5-6 commit-4-6 commit-3-6 commit-2-6 commit-1-6 \
> +		commit-6-5 commit-5-5 commit-4-5 commit-3-5 commit-2-5 commit-1-5 \
> +		commit-6-4 commit-5-4 commit-4-4 commit-3-4 commit-2-4 commit-1-4 \
> +		commit-6-3 commit-5-3 commit-4-3 commit-3-3 commit-2-3 commit-1-3 \
> +		commit-6-2 commit-5-2 commit-4-2 commit-3-2 commit-2-2 commit-1-2 \
> +		commit-6-1 commit-5-1 commit-4-1 commit-3-1 commit-2-1 commit-1-1 \
> +	>expect &&
> +	run_three_modes git rev-list --topo-order commit-6-6
> +'

I wonder if this test could be make easier to write and less error
prone, e.g. creating it from ASCII-art graphics.

But it is good enough.

[...]

--
Jakub Narębski