> From: Derrick Stolee <[email protected]>
> 
> The commit-graph file format v2 changes the v1 data only in the
> header information. Add tests that check the 'verify' subcommand
> catches corruption in the v2 header.

Ah, I should have read this patch before I wrote [1]. I think the commit
message of that patch should contain a note that verification of the v2
file format is done in a subsequent patch.

With or without that additional note, this series looks good to me.

[1] 
https://public-inbox.org/git/[email protected]/

> 
> Signed-off-by: Derrick Stolee <[email protected]>
> ---
>  t/t5318-commit-graph.sh | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
> index 3ff5e3b48d..be7bbf911a 100755
> --- a/t/t5318-commit-graph.sh
> +++ b/t/t5318-commit-graph.sh
> @@ -497,6 +497,37 @@ test_expect_success 'git fsck (checks commit-graph)' '
>       test_must_fail git fsck
>  '
>  
> +test_expect_success 'rewrite commmit-graph with version 2' '
> +     rm -f .git/objects/info/commit-graph &&
> +     git commit-graph write --reachable --version=2 &&
> +     git commit-graph verify
> +'
> +
> +GRAPH_BYTE_CHUNK_COUNT=5
> +GRAPH_BYTE_REACH_INDEX=6
> +GRAPH_BYTE_UNUSED=7
> +GRAPH_BYTE_HASH=8
> +
> +test_expect_success 'detect low chunk count (v2)' '
> +     corrupt_graph_and_verify $GRAPH_CHUNK_COUNT "\02" \
> +             "missing the .* chunk"
> +'
> +
> +test_expect_success 'detect incorrect reachability index' '
> +     corrupt_graph_and_verify $GRAPH_REACH_INDEX "\03" \
> +             "reachability index version"
> +'
> +
> +test_expect_success 'detect non-zero unused byte' '
> +     corrupt_graph_and_verify $GRAPH_BYTE_UNUSED "\01" \
> +             "unsupported value"
> +'
> +
> +test_expect_success 'detect bad hash version (v2)' '
> +     corrupt_graph_and_verify $GRAPH_BYTE_HASH "\00" \
> +             "hash algorithm"
> +'
> +
>  test_expect_success 'setup non-the_repository tests' '
>       rm -rf repo &&
>       git init repo &&
> -- 
> gitgitgadget

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