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-rwxr-xr-xt/t6035-merge-dir-to-symlink.sh172
1 files changed, 172 insertions, 0 deletions
diff --git a/t/t6035-merge-dir-to-symlink.sh b/t/t6035-merge-dir-to-symlink.sh
new file mode 100755
index 000000000000..9324ea441621
--- /dev/null
+++ b/t/t6035-merge-dir-to-symlink.sh
@@ -0,0 +1,172 @@
+#!/bin/sh
+
+test_description='merging when a directory was replaced with a symlink'
+. ./test-lib.sh
+
+test_expect_success 'create a commit where dir a/b changed to symlink' '
+	mkdir -p a/b/c a/b-2/c &&
+	> a/b/c/d &&
+	> a/b-2/c/d &&
+	> a/x &&
+	git add -A &&
+	git commit -m base &&
+	git tag start &&
+	rm -rf a/b &&
+	git add -A &&
+	test_ln_s_add b-2 a/b &&
+	git commit -m "dir to symlink"
+'
+
+test_expect_success 'checkout does not clobber untracked symlink' '
+	git checkout HEAD^0 &&
+	git reset --hard master &&
+	git rm --cached a/b &&
+	git commit -m "untracked symlink remains" &&
+	test_must_fail git checkout start^0
+'
+
+test_expect_success 'a/b-2/c/d is kept when clobbering symlink b' '
+	git checkout HEAD^0 &&
+	git reset --hard master &&
+	git rm --cached a/b &&
+	git commit -m "untracked symlink remains" &&
+	git checkout -f start^0 &&
+	test -f a/b-2/c/d
+'
+
+test_expect_success 'checkout should not have deleted a/b-2/c/d' '
+	git checkout HEAD^0 &&
+	git reset --hard master &&
+	 git checkout start^0 &&
+	 test -f a/b-2/c/d
+'
+
+test_expect_success 'setup for merge test' '
+	git reset --hard &&
+	test -f a/b-2/c/d &&
+	echo x > a/x &&
+	git add a/x &&
+	git commit -m x &&
+	git tag baseline
+'
+
+test_expect_success 'Handle D/F conflict, do not lose a/b-2/c/d in merge (resolve)' '
+	git reset --hard &&
+	git checkout baseline^0 &&
+	git merge -s resolve master &&
+	test -f a/b-2/c/d
+'
+
+test_expect_success SYMLINKS 'a/b was resolved as symlink' '
+	test -h a/b
+'
+
+test_expect_success 'Handle D/F conflict, do not lose a/b-2/c/d in merge (recursive)' '
+	git reset --hard &&
+	git checkout baseline^0 &&
+	git merge -s recursive master &&
+	test -f a/b-2/c/d
+'
+
+test_expect_success SYMLINKS 'a/b was resolved as symlink' '
+	test -h a/b
+'
+
+test_expect_success 'Handle F/D conflict, do not lose a/b-2/c/d in merge (resolve)' '
+	git reset --hard &&
+	git checkout master^0 &&
+	git merge -s resolve baseline^0 &&
+	test -f a/b-2/c/d
+'
+
+test_expect_success SYMLINKS 'a/b was resolved as symlink' '
+	test -h a/b
+'
+
+test_expect_success 'Handle F/D conflict, do not lose a/b-2/c/d in merge (recursive)' '
+	git reset --hard &&
+	git checkout master^0 &&
+	git merge -s recursive baseline^0 &&
+	test -f a/b-2/c/d
+'
+
+test_expect_success SYMLINKS 'a/b was resolved as symlink' '
+	test -h a/b
+'
+
+test_expect_failure 'do not lose untracked in merge (resolve)' '
+	git reset --hard &&
+	git checkout baseline^0 &&
+	>a/b/c/e &&
+	test_must_fail git merge -s resolve master &&
+	test -f a/b/c/e &&
+	test -f a/b-2/c/d
+'
+
+test_expect_success 'do not lose untracked in merge (recursive)' '
+	git reset --hard &&
+	git checkout baseline^0 &&
+	>a/b/c/e &&
+	test_must_fail git merge -s recursive master &&
+	test -f a/b/c/e &&
+	test -f a/b-2/c/d
+'
+
+test_expect_success 'do not lose modifications in merge (resolve)' '
+	git reset --hard &&
+	git checkout baseline^0 &&
+	echo more content >>a/b/c/d &&
+	test_must_fail git merge -s resolve master
+'
+
+test_expect_success 'do not lose modifications in merge (recursive)' '
+	git reset --hard &&
+	git checkout baseline^0 &&
+	echo more content >>a/b/c/d &&
+	test_must_fail git merge -s recursive master
+'
+
+test_expect_success 'setup a merge where dir a/b-2 changed to symlink' '
+	git reset --hard &&
+	git checkout start^0 &&
+	rm -rf a/b-2 &&
+	git add -A &&
+	test_ln_s_add b a/b-2 &&
+	git commit -m "dir a/b-2 to symlink" &&
+	git tag test2
+'
+
+test_expect_success 'merge should not have D/F conflicts (resolve)' '
+	git reset --hard &&
+	git checkout baseline^0 &&
+	git merge -s resolve test2 &&
+	test -f a/b/c/d
+'
+
+test_expect_success SYMLINKS 'a/b-2 was resolved as symlink' '
+	test -h a/b-2
+'
+
+test_expect_success 'merge should not have D/F conflicts (recursive)' '
+	git reset --hard &&
+	git checkout baseline^0 &&
+	git merge -s recursive test2 &&
+	test -f a/b/c/d
+'
+
+test_expect_success SYMLINKS 'a/b-2 was resolved as symlink' '
+	test -h a/b-2
+'
+
+test_expect_success 'merge should not have F/D conflicts (recursive)' '
+	git reset --hard &&
+	git checkout -b foo test2 &&
+	git merge -s recursive baseline^0 &&
+	test -f a/b/c/d
+'
+
+test_expect_success SYMLINKS 'a/b-2 was resolved as symlink' '
+	test -h a/b-2
+'
+
+test_done