diff --git a/tests-ng/install-dir-as-block.sh b/tests-ng/install-dir-as-block.sh
new file mode 100644
index 0000000..3714b6b
--- /dev/null
+++ b/tests-ng/install-dir-as-block.sh
@@ -0,0 +1,128 @@
+#!/usr/bin/env bash
+# author: deadc0de6 (https://github.com/deadc0de6)
+# Copyright (c) 2025, deadc0de6
+#
+# test dir_as block
+#
+
+## start-cookie
+set -eu -o errtrace -o pipefail
+cur=$(cd "$(dirname "${0}")" && pwd)
+ddpath="${cur}/../"
+PPATH="{PYTHONPATH:-}"
+export PYTHONPATH="${ddpath}:${PPATH}"
+altbin="python3 -m dotdrop.dotdrop"
+if hash coverage 2>/dev/null; then
+  mkdir -p coverages/
+  altbin="coverage run -p --data-file coverages/coverage --source=dotdrop -m dotdrop.dotdrop"
+fi
+bin="${DT_BIN:-${altbin}}"
+# shellcheck source=tests-ng/helpers
+source "${cur}"/helpers
+echo -e "$(tput setaf 6)==> RUNNING $(basename "${BASH_SOURCE[0]}") <==$(tput sgr0)"
+## end-cookie
+
+################################################################
+# this is the test
+################################################################
+
+# Setup temp dirs
+tmpd=$(mktemp -d --suffix='-dotdrop-tests' || mktemp -d)
+dotpath="${tmpd}/dotfiles"
+mkdir -p "${dotpath}"
+instroot="${tmpd}/install"
+mkdir -p "${instroot}"
+
+clear_on_exit "${tmpd}"
+
+# Create source directories and files
+mkdir -p "${dotpath}/blockme1/subdir"
+echo "file1" > "${dotpath}/blockme1/file1.txt"
+echo "file2" > "${dotpath}/blockme1/subdir/file2.txt"
+
+mkdir -p "${dotpath}/blockme2"
+echo "file3" > "${dotpath}/blockme2/file3.txt"
+
+mkdir -p "${dotpath}/noblock"
+echo "file4" > "${dotpath}/noblock/file4.txt"
+
+# Add a subdirectory that matches the dir_as_block pattern
+mkdir -p "${dotpath}/blockme1/matchsub"
+echo "subfile1" > "${dotpath}/blockme1/matchsub/subfile1.txt"
+
+# Add a subdirectory that does NOT match the pattern
+mkdir -p "${dotpath}/blockme1/nomatchsub"
+echo "subfile2" > "${dotpath}/blockme1/nomatchsub/subfile2.txt"
+
+# Create config file with multiple dir_as_block patterns
+cfg="${tmpd}/config.yaml"
+cat > "${cfg}" << _EOF
+config:
+  backup: false
+  create: true
+  dotpath: dotfiles
+dotfiles:
+  d_blockme1:
+    src: blockme1
+    dst: ${instroot}/blockme1
+    dir_as_block:
+      - "*blockme1"
+      - "*blockme2"
+  d_blockme2:
+    src: blockme2
+    dst: ${instroot}/blockme2
+    dir_as_block:
+      - "*blockme1"
+      - "*blockme2"
+  d_noblock:
+    src: noblock
+    dst: ${instroot}/noblock
+    dir_as_block:
+      - "*blockme1"
+      - "*blockme2"
+profiles:
+  p1:
+    dotfiles:
+      - d_blockme1
+      - d_blockme2
+      - d_noblock
+_EOF
+
+# Install
+cd "${ddpath}" | ${bin} install -f -c "${cfg}" --verbose -p p1
+
+# Check that blockme1 and blockme2 were installed as a block (directory replaced as a whole)
+# Remove a file from blockme1, reinstall, and check it is restored (block behavior)
+rm -f "${instroot}/blockme1/file1.txt"
+cd "${ddpath}" | ${bin} install -f -c "${cfg}" --verbose -p p1
+[ -f "${instroot}/blockme1/file1.txt" ] || (echo "blockme1 not restored as block" && exit 1)
+
+# Remove a file from noblock, reinstall, and check it is NOT restored (not a block)
+rm -f "${instroot}/noblock/file4.txt"
+cd "${ddpath}" | ${bin} install -f -c "${cfg}" --verbose -p p1
+[ ! -f "${instroot}/noblock/file4.txt" ] || (echo "noblock should not be restored as block" && exit 1)
+
+# Check that blockme2 was installed as a block
+rm -f "${instroot}/blockme2/file3.txt"
+cd "${ddpath}" | ${bin} install -f -c "${cfg}" --verbose -p p1
+[ -f "${instroot}/blockme2/file3.txt" ] || (echo "blockme2 not restored as block" && exit 1)
+
+# Check that subdir and its file are present in blockme1
+[ -d "${instroot}/blockme1/subdir" ] || (echo "blockme1/subdir missing" && exit 1)
+[ -f "${instroot}/blockme1/subdir/file2.txt" ] || (echo "blockme1/subdir/file2.txt missing" && exit 1)
+
+# Reinstall to ensure both subdirs are installed
+cd "${ddpath}" | ${bin} install -f -c "${cfg}" --verbose -p p1
+
+# Remove a file from the matching subdir, reinstall, and check it is restored (block behavior)
+rm -f "${instroot}/blockme1/matchsub/subfile1.txt"
+cd "${ddpath}" | ${bin} install -f -c "${cfg}" --verbose -p p1
+[ -f "${instroot}/blockme1/matchsub/subfile1.txt" ] || (echo "blockme1/matchsub not restored as block" && exit 1)
+
+# Remove a file from the non-matching subdir, reinstall, and check it is NOT restored (not a block)
+rm -f "${instroot}/blockme1/nomatchsub/subfile2.txt"
+cd "${ddpath}" | ${bin} install -f -c "${cfg}" --verbose -p p1
+[ ! -f "${instroot}/blockme1/nomatchsub/subfile2.txt" ] || (echo "blockme1/nomatchsub should not be restored as block" && exit 1)
+
+echo "OK"
+exit 0