Re: [PATCH 1/2] diff: enable and test the sparse index

[Derrick Stolee <stolee@gmail.com>]

On 10/14/2021 1:25 PM, Lessley Dennington via GitGitGadget wrote:

There is a failure in 'seen', and it's due to a subtle reason
that we didn't catch in gitgitgadget PR builds. It's because
ds/add-rm-with-sparse-index wasn't in your history until it was
merged into 'seen'.

> +test_expect_success 'diff partially-staged' '
> +	init_repos &&
> +
> +	write_script edit-contents <<-\EOF &&
> +	echo text >>$1
> +	EOF
> +
> +	# Add file within cone
> +	test_all_match git sparse-checkout set deep &&

The root cause is that you should use "test_sparse_match" when
adjusting the sparse-checkout definition. The full-checkout repo
is getting the sparse-checkout set to a single pattern "deep",
but without cone mode.

> +	run_on_all ../edit-contents deep/testfile &&
> +	test_all_match git add deep/testfile &&

But the test fails here because "deep/testfile" doesn't match
the sparse-checkout definition in the full-checkout repo.

> +	run_on_all ../edit-contents deep/testfile &&
> +
> +	test_all_match git diff &&
> +	test_all_match git diff --staged &&
> +
> +	# Add file outside cone
> +	test_all_match git reset --hard &&
> +	run_on_all mkdir newdirectory &&
> +	run_on_all ../edit-contents newdirectory/testfile &&
> +	test_all_match git sparse-checkout set newdirectory &&

You'll want to change this line, too.

Thanks,
-Stolee