show tests: add test for "git show <tree>"

Add missing tests for showing a tree with "git show". Let's test for
showing a tree, two trees, and that doing so doesn't recurse.

The only tests for this code added in 5d7eeee2ac6 (git-show: grok
blobs, trees and tags, too, 2006-12-14) were the tests in
t7701-repack-unpack-unreachable.sh added in ccc1297226b (repack:
modify behavior of -A option to leave unreferenced objects unpacked,
2008-05-09).

Let's add this common mode of operation to the "show" tests
themselves. It's more obvious, and the tests in
t7701-repack-unpack-unreachable.sh happily pass if we start buggily
emitting trees recursively.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t7007-show.sh b/t/t7007-show.sh
index 42d3db624686998f49d2fb7c80b190eee14a3e9e..d6cc69e0f2cbd576ff6ff81720de63f1e9cf86bf 100755 (executable)
--- a/t/t7007-show.sh
+++ b/t/t7007-show.sh
@@ -38,6 +38,45 @@ test_expect_success 'showing two commits' '
        test_cmp expect actual.filtered
 '
 
+test_expect_success 'showing a tree' '
+       cat >expected <<-EOF &&
+       tree main1:
+
+       main1.t
+       EOF
+       git show main1: >actual &&
+       test_cmp expected actual
+'
+
+test_expect_success 'showing two trees' '
+       cat >expected <<-EOF &&
+       tree main1^{tree}
+
+       main1.t
+
+       tree main2^{tree}
+
+       main1.t
+       main2.t
+       EOF
+       git show main1^{tree} main2^{tree} >actual &&
+       test_cmp expected actual
+'
+
+test_expect_success 'showing a trees is not recursive' '
+       git worktree add not-recursive main1 &&
+       mkdir not-recursive/a &&
+       test_commit -C not-recursive a/file &&
+       cat >expected <<-EOF &&
+       tree HEAD^{tree}
+
+       a/
+       main1.t
+       EOF
+       git -C not-recursive show HEAD^{tree} >actual &&
+       test_cmp expected actual
+'
+
 test_expect_success 'showing a range walks (linear)' '
        cat >expect <<-EOF &&
        commit $(git rev-parse main3)