skip_identical_file \

skip_identical_file_body() {

	# Create v1 with a file that will stay identical and one that will change

	atf_check -s exit:0 sh ${RESOURCEDIR}/test_subr.sh new_pkg "pkg" "pkg" "1"

	echo "identical content" > samefile

	echo "content v1" > changedfile

	cat > plist << EOF

${TMPDIR}/samefile

${TMPDIR}/changedfile

EOF

	atf_check pkg create -M pkg.ucl -p plist

	# Install v1

	mkdir target

	atf_check -o ignore -e ignore \

		pkg -o REPOS_DIR="${TMPDIR}" -r ${TMPDIR}/target install -Uy ${TMPDIR}/pkg-1.pkg

	# Record mtime of the identical file after install

	mtime_before=$(q_mtime target/${TMPDIR}/samefile)

	# Sleep to ensure filesystem timestamps will differ if the file is touched

	sleep 2

	# Create v2: samefile has identical content, changedfile has new content

	atf_check -s exit:0 sh ${RESOURCEDIR}/test_subr.sh new_pkg "pkg" "pkg" "2"

	echo "content v2" > changedfile

	cat > plist << EOF

${TMPDIR}/samefile

${TMPDIR}/changedfile

EOF

	atf_check pkg create -M pkg.ucl -p plist

	# Upgrade to v2 from local file

	atf_check -o ignore -e ignore \

		pkg -o REPOS_DIR="${TMPDIR}" -r ${TMPDIR}/target install -Uy ${TMPDIR}/pkg-2.pkg

	# Verify identical file was NOT re-extracted (mtime preserved)

	mtime_after=$(q_mtime target/${TMPDIR}/samefile)

	atf_check test "${mtime_before}" = "${mtime_after}"

	# Verify changed file WAS re-extracted with new content

	atf_check -o inline:"content v2\n" cat target/${TMPDIR}/changedfile

}