1 files changed, 91 insertions, 0 deletions
diff --git a/third_party/git/t/t4007-rename-3.sh b/third_party/git/t/t4007-rename-3.sh
new file mode 100755
index 000000000000..b187b7f6c66b
--- /dev/null
+++ b/third_party/git/t/t4007-rename-3.sh
@@ -0,0 +1,91 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+
+test_description='Rename interaction with pathspec.
+
+'
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/diff-lib.sh ;# test-lib chdir's into trash
+
+test_expect_success 'prepare reference tree' '
+	mkdir path0 path1 &&
+	cp "$TEST_DIRECTORY"/diff-lib/COPYING path0/COPYING &&
+	git update-index --add path0/COPYING &&
+	tree=$(git write-tree) &&
+	echo $tree
+'
+
+blob=$(git hash-object "$TEST_DIRECTORY/diff-lib/COPYING")
+test_expect_success 'prepare work tree' '
+	cp path0/COPYING path1/COPYING &&
+	git update-index --add --remove path0/COPYING path1/COPYING
+'
+
+# In the tree, there is only path0/COPYING.  In the cache, path0 and
+# path1 both have COPYING and the latter is a copy of path0/COPYING.
+# Comparing the full tree with cache should tell us so.
+
+cat >expected <<EOF
+:100644 100644 $blob $blob C100	path0/COPYING	path1/COPYING
+EOF
+
+test_expect_success 'copy detection' '
+	git diff-index -C --find-copies-harder $tree >current &&
+	compare_diff_raw current expected
+'
+
+test_expect_success 'copy detection, cached' '
+	git diff-index -C --find-copies-harder --cached $tree >current &&
+	compare_diff_raw current expected
+'
+
+# In the tree, there is only path0/COPYING.  In the cache, path0 and
+# path1 both have COPYING and the latter is a copy of path0/COPYING.
+# However when we say we care only about path1, we should just see
+# path1/COPYING suddenly appearing from nowhere, not detected as
+# a copy from path0/COPYING.
+
+cat >expected <<EOF
+:000000 100644 $ZERO_OID $blob A	path1/COPYING
+EOF
+
+test_expect_success 'copy, limited to a subtree' '
+	git diff-index -C --find-copies-harder $tree path1 >current &&
+	compare_diff_raw current expected
+'
+
+test_expect_success 'tweak work tree' '
+	rm -f path0/COPYING &&
+	git update-index --remove path0/COPYING
+'
+# In the tree, there is only path0/COPYING.  In the cache, path0 does
+# not have COPYING anymore and path1 has COPYING which is a copy of
+# path0/COPYING.  Showing the full tree with cache should tell us about
+# the rename.
+
+cat >expected <<EOF
+:100644 100644 $blob $blob R100	path0/COPYING	path1/COPYING
+EOF
+
+test_expect_success 'rename detection' '
+	git diff-index -C --find-copies-harder $tree >current &&
+	compare_diff_raw current expected
+'
+
+# In the tree, there is only path0/COPYING.  In the cache, path0 does
+# not have COPYING anymore and path1 has COPYING which is a copy of
+# path0/COPYING.  When we say we care only about path1, we should just
+# see path1/COPYING appearing from nowhere.
+
+cat >expected <<EOF
+:000000 100644 $ZERO_OID $blob A	path1/COPYING
+EOF
+
+test_expect_success 'rename, limited to a subtree' '
+	git diff-index -C --find-copies-harder $tree path1 >current &&
+	compare_diff_raw current expected
+'
+
+test_done