[PATCH v8 05/15] t1092: add tests for status/add and sparse files

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From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>

Before moving to update 'git status' and 'git add' to work with sparse
indexes, add an explicit test that ensures the sparse-index works the
same as a normal sparse-checkout when the worktree contains directories
and files outside of the sparse cone.

Specifically, 'folder1/a' is a file in our test repo, but 'folder1' is
not in the sparse cone. When 'folder1/a' is modified, the file is not
shown as modified and adding it will fail. This is new behavior as of
a20f704 (add: warn when asked to update SKIP_WORKTREE entries,
2021-04-08). Before that change, these adds would be silently ignored.

Untracked files are fine: adding new files both with 'git add .' and
'git add folder1/' works just as in a full checkout. This may not be
entirely desirable, but we are not intending to change behavior at the
moment, only document it. A future change could alter the behavior to
be more sensible, and this test could be modified to satisfy the new
expected behavior.

Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
---
 t/t1092-sparse-checkout-compatibility.sh | 38 ++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh
index 0e71a623619..2269f44e033 100755
--- a/t/t1092-sparse-checkout-compatibility.sh
+++ b/t/t1092-sparse-checkout-compatibility.sh
@@ -254,6 +254,44 @@ test_expect_success 'add, commit, checkout' '
 	test_all_match git checkout -
 '
 
+test_expect_success 'status/add: outside sparse cone' '
+	init_repos &&
+
+	# adding a "missing" file outside the cone should fail
+	test_sparse_match test_must_fail git add folder1/a &&
+
+	# folder1 is at HEAD, but outside the sparse cone
+	run_on_sparse mkdir folder1 &&
+	cp initial-repo/folder1/a sparse-checkout/folder1/a &&
+	cp initial-repo/folder1/a sparse-index/folder1/a &&
+
+	test_sparse_match git status &&
+
+	write_script edit-contents <<-\EOF &&
+	echo text >>$1
+	EOF
+	run_on_sparse ../edit-contents folder1/a &&
+	run_on_all ../edit-contents folder1/new &&
+
+	test_sparse_match git status --porcelain=v2 &&
+
+	# This "git add folder1/a" fails with a warning
+	# in the sparse repos, differing from the full
+	# repo. This is intentional.
+	test_sparse_match test_must_fail git add folder1/a &&
+	test_sparse_match test_must_fail git add --refresh folder1/a &&
+	test_all_match git status --porcelain=v2 &&
+
+	test_all_match git add . &&
+	test_all_match git status --porcelain=v2 &&
+	test_all_match git commit -m folder1/new &&
+
+	run_on_all ../edit-contents folder1/newer &&
+	test_all_match git add folder1/ &&
+	test_all_match git status --porcelain=v2 &&
+	test_all_match git commit -m folder1/newer
+'
+
 test_expect_success 'checkout and reset --hard' '
 	init_repos &&
 
-- 
gitgitgadget




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