[PATCH v2 1/5] t1092: add compatibility tests for 'git show'

["Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>]

From: Derrick Stolee <dstolee@microsoft.com>

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
---
 t/t1092-sparse-checkout-compatibility.sh | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh
index 236ab530284..74792b5ebbc 100755
--- a/t/t1092-sparse-checkout-compatibility.sh
+++ b/t/t1092-sparse-checkout-compatibility.sh
@@ -1151,6 +1151,22 @@ test_expect_success 'clean' '
 	test_sparse_match test_path_is_dir folder1
 '
 
+test_expect_success 'show (cached blobs/trees)' '
+	init_repos &&
+
+	test_all_match git show :a &&
+	test_all_match git show :deep/a &&
+	test_sparse_match git show :folder1/a &&
+
+	# Asking "git show" for directories in the index
+	# does not work as implemented. The error message is
+	# different for a full checkout and a sparse checkout
+	# when the directory is outside of the cone.
+	test_all_match test_must_fail git show :deep/ &&
+	test_must_fail git -C full-checkout show :folder1/ &&
+	test_sparse_match test_must_fail git show :folder1/
+'
+
 test_expect_success 'submodule handling' '
 	init_repos &&
 
-- 
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