test_repo 3/sub/sub "$TRASH_DIRECTORY/3/.git" "$TRASH_DIRECTORY"
'
+#
+# case #4
+#
+############################################################
+#
+# Input:
+#
+# - GIT_WORK_TREE is not set
+# - GIT_DIR is not set
+# - core.worktree is set
+# - .git is a directory
+# - core.bare is not set, cwd is outside .git
+#
+# Output:
+#
+# core.worktree is ignored -> #0
+
+test_expect_success '#4: setup' '
+ unset GIT_DIR GIT_WORK_TREE &&
+ mkdir 4 4/sub &&
+ cd 4 &&
+ git init &&
+ git config core.worktree non-existent &&
+ cd ..
+'
+
+test_expect_failure '#4: at root' '
+ cat >4/expected <<EOF &&
+setup: git_dir: .git
+setup: worktree: $TRASH_DIRECTORY/4
+setup: cwd: $TRASH_DIRECTORY/4
+setup: prefix: (null)
+EOF
+ test_repo 4
+'
+
+test_expect_failure '#4: in subdir' '
+ cat >4/sub/expected <<EOF &&
+setup: git_dir: .git
+setup: worktree: $TRASH_DIRECTORY/4
+setup: cwd: $TRASH_DIRECTORY/4
+setup: prefix: sub/
+EOF
+ test_repo 4/sub
+'
+
test_done