--- /dev/null
+#!/bin/sh
+
+test_description='test corner cases of git-archive'
+. ./test-lib.sh
+
+test_expect_success 'create commit with empty tree' '
+ git commit --allow-empty -m foo
+'
+
+# Make a dir and clean it up afterwards
+make_dir() {
+ mkdir "$1" &&
+ test_when_finished "rm -rf '$1'"
+}
+
+# Check that the dir given in "$1" contains exactly the
+# set of paths given as arguments.
+check_dir() {
+ dir=$1; shift
+ {
+ echo "$dir" &&
+ for i in "$@"; do
+ echo "$dir/$i"
+ done
+ } | sort >expect &&
+ find "$dir" -print | sort >actual &&
+ test_cmp expect actual
+}
+
+test_expect_success 'tar archive of empty tree is empty' '
+ git archive --format=tar HEAD >empty.tar &&
+ make_dir extract &&
+ "$TAR" xf empty.tar -C extract &&
+ check_dir extract
+'
+
+test_expect_success 'tar archive of empty tree with prefix' '
+ git archive --format=tar --prefix=foo/ HEAD >prefix.tar &&
+ make_dir extract &&
+ "$TAR" xf prefix.tar -C extract &&
+ check_dir extract foo
+'
+
+test_expect_success UNZIP 'zip archive of empty tree is empty' '
+ # Detect the exit code produced when our particular flavor of unzip
+ # sees an empty archive. Infozip will generate a warning and exit with
+ # code 1. But in the name of sanity, we do not expect other unzip
+ # implementations to do the same thing (it would be perfectly
+ # reasonable to exit 0, for example).
+ #
+ # This makes our test less rigorous on some platforms (unzip may not
+ # handle the empty repo at all, making our later check of its exit code
+ # a no-op). But we cannot do anything reasonable except skip the test
+ # on such platforms anyway, and this is the moral equivalent.
+ "$GIT_UNZIP" "$TEST_DIRECTORY"/t5004/empty.zip
+ expect_code=$?
+
+ git archive --format=zip HEAD >empty.zip &&
+ make_dir extract &&
+ (
+ cd extract &&
+ test_expect_code $expect_code "$GIT_UNZIP" ../empty.zip
+ ) &&
+ check_dir extract
+'
+
+test_expect_success UNZIP 'zip archive of empty tree with prefix' '
+ # We do not have to play exit-code tricks here, because our
+ # result should not be empty; it has a directory in it.
+ git archive --format=zip --prefix=foo/ HEAD >prefix.zip &&
+ make_dir extract &&
+ (
+ cd extract &&
+ "$GIT_UNZIP" ../prefix.zip
+ ) &&
+ check_dir extract foo
+'
+
+test_expect_success 'archive complains about pathspec on empty tree' '
+ test_must_fail git archive --format=tar HEAD -- foo >/dev/null
+'
+
+test_expect_success 'create a commit with an empty subtree' '
+ empty_tree=$(git hash-object -t tree /dev/null) &&
+ root_tree=$(printf "040000 tree $empty_tree\tsub\n" | git mktree)
+'
+
+test_expect_success 'archive empty subtree with no pathspec' '
+ git archive --format=tar $root_tree >subtree-all.tar &&
+ make_dir extract &&
+ "$TAR" xf subtree-all.tar -C extract &&
+ check_dir extract sub
+'
+
+test_expect_success 'archive empty subtree by direct pathspec' '
+ git archive --format=tar $root_tree -- sub >subtree-path.tar &&
+ make_dir extract &&
+ "$TAR" xf subtree-path.tar -C extract &&
+ check_dir extract sub
+'
+
+test_done