feat: purge selected packages in one transaction

README.md

@@ -59,7 +59,7 @@ options:
                     none (default: paru, else yay, when installed; other backends ignore it)
   --no-aur          same as --aur-helper=none
   -h, --help        this help
-  -V, --version     print the version
+  -v, --version     print the version
 ```
 
 Exit status: `0` ok, `1` usage or backend error, `2` aborted (end of input),
@@ -153,6 +153,8 @@ other command suffixes.
 | end of input | abort without upgrading (exit 2) |
 
 Several tokens may share a line (`1? 3- 4+`); they run left to right. Consecutive
+`Nx` commands such as `5x 30x 41x` are simulated and confirmed together. Another
+command ends the group; a dependent can be included with its dependency. Consecutive
 `N+` commands are processed together: selected packages required by another selected
 package are recorded as dependencies, regardless of their order. `*+` works the same
 way. With `--all`

skeptical-updater

@@ -6,7 +6,7 @@
 # and zypper: list what would be upgraded, interrogate every package, remember the
 # ones you trust, then run the native upgrade (with per-run exclusions).
 #
-# Version: 0.3.0
+# Version: 0.4.0
 #
 # Specification: docs/DESIGN.md. Single file, bash >= 4.3, no runtime dependency
 # beyond the distro's package manager and coreutils/sed/grep (awk only on the apt
@@ -23,7 +23,7 @@ export LC_ALL=C DEBIAN_FRONTEND=noninteractive
 # never read from or written to a file (no HISTFILE; `history -r`/`-w`/`-a` are never used).
 unset HISTFILE
 
-readonly SU_VERSION=0.3.0
+readonly SU_VERSION=0.4.0
 readonly SU_PROG=skeptical-updater
 readonly SU_STATE_HEADER='# skeptical-updater trusted packages. Columns: backend  package  reason  added(UTC ISO-8601)'
 readonly SU_PROMPT_HELP='<enter> upgrade | N? what is it | N?? full info | N- exclude this run | Nx purge now | N+ trust forever'
@@ -105,7 +105,7 @@ options:
                     none (default: paru, else yay, when installed; other backends ignore it)
   --no-aur          same as --aur-helper=none
   -h, --help        this help
-  -V, --version     print the version
+  -v, --version     print the version
 
 interactive commands (one line, whitespace-separated tokens, N = number in brackets):
   <empty line>  proceed: run the native upgrade with the current exclusions
@@ -118,6 +118,7 @@ interactive commands (one line, whitespace-separated tokens, N = number in brack
   N-            exclude from this run (toggle); shown with a '-' marker
   Nx            purge it now with its now-unneeded dependencies (shown, asks y/N); refused
                 when other installed packages depend on it, like pacman -Rns
+                consecutive Nx commands are purged together after one confirmation
   N+            trust it forever (with its installed dependency closure)
   *+ / *-       apply + / - to every listed package
   l             redraw the list
@@ -144,6 +145,7 @@ session_help() {
   Nx        purge N now: lists every package the purge removes, then asks y/N.
             x refuses when other installed packages depend on the target, like
             pacman -Rns; purge the dependents first
+            consecutive Nx commands are purged together after one confirmation
   N+        trust N (and its installed dependencies) forever
   *+  *-    trust / exclude every listed package (*- again re-includes them)
   l         redraw the list (a '*' after the number marks an AUR package)
@@ -199,7 +201,7 @@ parse_args() {
 			usage
 			exit 0
 			;;
-		-V | --version)
+		-v | --version)
 			printf '%s %s\n' "$SU_PROG" "$SU_VERSION"
 			exit 0
 			;;
@@ -972,20 +974,21 @@ apt_closure() {
 # is system-wide (it also takes pre-existing orphans, e.g. old kernels: verified), so the
 # orphans that were already autoremovable before are subtracted and the rest named explicitly.
 apt_purge_plan() {
-	local pkg=$1 pre sim w name rest
-	local -A before=()
-	local -a args=("$pkg")
+	local pre sim w name rest
+	local -A before=() requested=()
+	local -a args=("$@")
+	for name in "$@"; do requested[$name]=1; done
 	pre=$(apt-get -s autoremove </dev/null 2>/dev/null) || pre=''
 	while read -r w name rest; do
 		[[ $w == Remv || $w == Purg ]] && before[$name]=1
 	done <<<"$pre"
-	sim=$(apt-get -s purge --auto-remove "$pkg" </dev/null 2>&1) || {
+	sim=$(apt-get -s purge --auto-remove "$@" </dev/null 2>&1) || {
 		printf '%s\n' "$sim" >&2
 		return 1
 	}
 	while read -r w name rest; do
 		[[ $w == Remv || $w == Purg ]] || continue
-		[[ -z ${before[$name]+x} && $name != "$pkg" ]] && args+=("$name")
+		[[ -z ${before[$name]+x} && -z ${requested[$name]+x} ]] && args+=("$name")
 	done <<<"$sim"
 	sim=$(apt-get -s purge "${args[@]}" </dev/null 2>&1) || {
 		printf '%s\n' "$sim" >&2
@@ -1507,7 +1510,7 @@ pacman_closure() {
 # On refusal pacman explains on stdout (":: removing X breaks dependency ..."): show all of it.
 pacman_purge_plan() {
 	local out rc=0 l
-	out=$(COLUMNS=0 pacman -Rs --print --print-format '%n' -- "$1" </dev/null 2>&1) || rc=$?
+	out=$(COLUMNS=0 pacman -Rs --print --print-format '%n' -- "$@" </dev/null 2>&1) || rc=$?
 	if ((rc)); then
 		printf '%s\n' "$out" >&2
 		return "$rc"
@@ -1908,7 +1911,7 @@ dnf_purge_plan() {
 	local out line in=0 wrapped=0
 	local -a f=()
 	local arch_re='^(noarch|x86_64|x86_64_v[0-9]|aarch64|i[3-6]86|ppc64le|ppc64|s390x|armv7hl|armv7l|riscv64|loongarch64|src)$'
-	out=$("$DNF" --assumeno remove "$1" </dev/null 2>&1) || true
+	out=$("$DNF" --assumeno remove "$@" </dev/null 2>&1) || true
 	if [[ $out != *'Transaction Summary'* ]]; then
 		if [[ $out == *'Nothing to do'* ]]; then return 0; fi
 		printf '%s\n' "$out" >&2
@@ -2091,7 +2094,7 @@ zypper_reason() {
 }
 zypper_purge_plan() {
 	local xml rc=0 sec name rest
-	xml=$(zypper --non-interactive --no-refresh --xmlout remove --dry-run --clean-deps "$1" </dev/null 2>&1) || rc=$?
+	xml=$(zypper --non-interactive --no-refresh --xmlout remove --dry-run --clean-deps "$@" </dev/null 2>&1) || rc=$?
 	if ((rc)); then
 		[[ $rc != 104 ]] || say "zypper: no installed package provides '$1' (exit 104)" >&2
 		((rc == 104)) || printf '%s\n' "$xml" >&2
@@ -2631,66 +2634,103 @@ num_row() { # num_row N -> $REPLY = row index of a listed row, rc 1 if N is not
 	REPLY=${N_IDX[n]}
 }
 
-# session_purge IDX: pacman's -Rns principle on every backend - a package that other installed
+# session_purge IDX...: pacman's -Rns principle on every backend - a package that other installed
 # packages still depend on is never purged (they are listed, as N? does; nothing cascades);
 # otherwise the package goes with the dependencies it alone needed, as the y/N prompt lists.
 session_purge() {
-	local i=$1 name=${R_NAME[$1]} rc=0 out line p prompt rd d
-	local -a plan=() others=() extra=()
-	local -A still=() gone=() mine=()
-	if [[ ${R_OLD[i]} == - ]]; then
-		say "$name is not installed (the upgrade would install it as a new dependency): nothing to purge; use $((R_NUM[i]))- to exclude it from this run."
-		return 0
-	fi
-	rd=$(be rdepends "$name") || rd=''
-	rd=$(printf '%s\n' "$rd" | sed '/^$/d' | tr '\n' ' ')
-	rd=${rd% }
-	if [[ -n $rd ]]; then
-		say "not purged: $name is required by: ${rd// /, } - purge the dependents first"
-		return 0
-	fi
-	out=$(be purge_plan "$name" | sort -u) || rc=$?
+	local i name rd out rc=0 p prompt idx dep changed
+	local -a targets=() target_names=() total_plan=() total_others=() extra=() rdeps=()
+	local -A purge_selected=() rejected=() reverse=() gone=() allowed=() still=()
+	local line
+
+	for idx in "$@"; do purge_selected[${R_NAME[idx]}]=$idx; done
+	mapfile -t targets < <(printf '%s\n' "${purge_selected[@]}" | sort -n)
+	for i in "${targets[@]}"; do
+		name=${R_NAME[i]}
+		if [[ ${R_OLD[i]} == - ]]; then
+			say "$name is not installed (the upgrade would install it as a new dependency): nothing to purge; use $((R_NUM[i]))- to exclude it from this run."
+			rejected[$name]=1
+			continue
+		fi
+		rd=$(be rdepends "$name") || rd=''
+		reverse[$name]=$(printf '%s\n' "$rd" | sed '/^$/d' | tr '\n' ' ')
+	done
+	# A refused dependent also blocks its dependencies, including through a chain.
+	changed=1
+	while ((changed)); do
+		changed=0
+		for i in "${targets[@]}"; do
+			name=${R_NAME[i]}
+			[[ -z ${rejected[$name]+x} ]] || continue
+			read -r -a rdeps <<<"${reverse[$name]}"
+			for dep in "${rdeps[@]}"; do
+				if [[ -z ${purge_selected[$dep]+x} || -n ${rejected[$dep]+x} ]]; then
+					rd=${reverse[$name]% }
+					say "not purged: $name is required by: ${rd// /, } - purge the dependents first"
+					rejected[$name]=1
+					changed=1
+					break
+				fi
+			done
+		done
+	done
+	for i in "${targets[@]}"; do
+		name=${R_NAME[i]}
+		[[ -z ${rejected[$name]+x} ]] || continue
+		target_names+=("$name")
+		allowed[$name]=1
+		closure_of "$name"
+		for dep in ${CLOSURE[@]+"${CLOSURE[@]}"}; do allowed[$dep]=1; done
+	done
+	((${#target_names[@]})) || return 0
+	out=$(be purge_plan "${target_names[@]}" | sort -u) || rc=$?
 	if ((rc)); then
-		err "cannot purge $name: $(be label) refuses (see above); nothing was removed"
+		err "cannot purge ${target_names[*]}: $(be label) refuses (see above); nothing was removed"
 		return 0
 	fi
 	while IFS= read -r p; do
-		[[ -n $p && -z ${gone[$p]+x} ]] || continue
+		[[ -n $p ]] || continue
+		total_plan+=("$p")
 		gone[$p]=1
-		plan+=("$p")
-		[[ $p == "$name" ]] || others+=("$p")
+		[[ -n ${purge_selected[$p]+x} && -z ${rejected[$p]+x} ]] || total_others+=("$p")
+		[[ -n ${allowed[$p]+x} && -z ${rejected[$p]+x} ]] || extra+=("$p")
 	done <<<"$out"
-	if ((${#plan[@]} == 0)); then
-		say "$name is not installed: nothing to purge."
+	if ((${#total_plan[@]} == 0)); then
+		say "${target_names[*]} is not installed: nothing to purge."
 		return 0
 	fi
-	# belt and braces: the plan may only hold the target and its own (installed) dependencies;
-	# anything else means a dependent the reverse-dependency query missed (e.g. through a virtual)
-	if ((${#others[@]})); then
-		closure_of "$name"
-		for d in ${CLOSURE[@]+"${CLOSURE[@]}"}; do mine[$d]=1; done
-		for p in "${others[@]}"; do [[ -n ${mine[$p]+x} ]] || extra+=("$p"); done
-		if ((${#extra[@]})); then
-			err "cannot purge $name: $(be label) would also remove $(join_by ', ' "${extra[@]}"), which $name does not depend on (dependents of it?); nothing was removed"
+	for name in "${target_names[@]}"; do
+		if [[ -z ${gone[$name]+x} ]]; then
+			err "cannot purge $name: $(be label) did not include it in the plan; nothing was removed"
 			return 0
 		fi
+	done
+	# belt and braces: no package outside the targets and their dependencies may be removed.
+	if ((${#extra[@]})); then
+		err "cannot purge ${target_names[*]}: $(be label) would also remove $(join_by ', ' "${extra[@]}"), which ${target_names[*]} does not depend on (dependents of it?); nothing was removed"
+		return 0
 	fi
-	prompt="Purge $name now?"
-	((${#others[@]} == 0)) || prompt+=" This also removes: $(join_by ', ' "${others[@]}")"
+	prompt="Purge ${target_names[*]} now?"
+	((${#total_others[@]} == 0)) || prompt+=" This also removes: $(join_by ', ' "${total_others[@]}")"
 	read_line "$prompt [y/N] "
 	case $REPLY in
 	y | Y | yes | YES | Yes) ;;
 	*)
-		say "not purged: $name"
+		say "not purged: ${target_names[*]}"
 		return 0
 		;;
 	esac
-	be purge "${plan[@]}" || rc=$?
+	rc=0
+	be purge "${total_plan[@]}" || rc=$?
 	if ((rc)); then
-		err "purge of $name failed ($(be label) exited $rc); the row stays in the list"
+		if ((${#target_names[@]} == 1)); then
+			err "purge of ${target_names[0]} failed ($(be label) exited $rc); the row stays in the list"
+		else
+			err "purge of ${target_names[*]} failed ($(be label) exited $rc); the rows stay in the list"
+		fi
 		return 0
 	fi
-	say "purged: ${plan[*]}"
+	say "purged: ${total_plan[*]}"
 	for ((i = 0; i < ${#R_NAME[@]}; i++)); do
 		if [[ -n ${gone[${R_NAME[i]}]+x} ]]; then
 			R_GONE[i]=1
@@ -2768,9 +2808,21 @@ session_toggle_all() {
 SESSION_PROCEED=0
 UPGRADE_FAILED_MSG= # set by <be>_upgrade when the failing step is not the package manager's own
 
+session_flush_purges() {
+	local -n pb=$1
+	if ((${#pb[@]})); then
+		session_purge "${pb[@]}"
+		pb=()
+		if (($(rows_left) == 0 && ${#R_NOTES[@]} == 0)); then
+			say "Nothing left to upgrade."
+			exit 0
+		fi
+	fi
+}
+
 session_line() {
 	local tok n op i name
-	local -a toks=() batch=()
+	local -a toks=() batch=() purge_batch=()
 	local -A initial=() named=()
 	local re='^([0-9]{1,6})(\?\?|\?|-|x|\+)$'
 	local name_re='^([A-Za-z0-9_+@][A-Za-z0-9_+.@:~-]*)(\?\?|\?)$'
@@ -2797,6 +2849,24 @@ session_line() {
 		fi
 	done
 	for tok in "${toks[@]}"; do
+		if [[ $tok =~ $re ]]; then
+			op=${BASH_REMATCH[2]}
+			if [[ $op == x ]]; then
+				if ((${#batch[@]})); then session_trust "${batch[@]}"; batch=(); fi
+			elif [[ $op == + ]]; then
+				session_flush_purges purge_batch
+			else
+				if ((${#batch[@]})); then session_trust "${batch[@]}"; batch=(); fi
+				session_flush_purges purge_batch
+			fi
+		elif [[ $tok =~ $name_re ]]; then
+			if ((${#batch[@]})); then session_trust "${batch[@]}"; batch=(); fi
+			session_flush_purges purge_batch
+		else
+			if ((${#batch[@]})); then session_trust "${batch[@]}"; batch=(); fi
+			session_flush_purges purge_batch
+		fi
+
 		if [[ $tok =~ $re ]]; then
 			n=$((10#${BASH_REMATCH[1]}))
 			op=${BASH_REMATCH[2]}
@@ -2809,7 +2879,10 @@ session_line() {
 				batch+=("$i")
 				continue
 			fi
-			if ((${#batch[@]})); then session_trust "${batch[@]}"; batch=(); fi
+			if [[ $op == x ]]; then
+				purge_batch+=("$i")
+				continue
+			fi
 			case $op in
 			'?') print_info "${R_NAME[i]}" "${R_OLD[i]}" || true ;;
 			'??') print_full_info "${R_NAME[i]}" "${R_OLD[i]}" || true ;;
@@ -2822,13 +2895,6 @@ session_line() {
 					say "excluded from this run: ${R_NAME[i]}"
 				fi
 				;;
-			x)
-				session_purge "$i"
-				if (($(rows_left) == 0 && ${#R_NOTES[@]} == 0)); then
-					say "Nothing left to upgrade."
-					exit 0
-				fi
-				;;
 			esac
 		elif [[ $tok =~ $name_re ]]; then
 			name=${BASH_REMATCH[1]}
@@ -2838,14 +2904,12 @@ session_line() {
 				continue
 			fi
 			i=${named[$name]}
-			if ((${#batch[@]})); then session_trust "${batch[@]}"; batch=(); fi
 			if [[ $op == '?' ]]; then
 				print_info "${R_NAME[i]}" "${R_OLD[i]}" || true
 			else
 				print_full_info "${R_NAME[i]}" "${R_OLD[i]}" || true
 			fi
 		else
-			if ((${#batch[@]})); then session_trust "${batch[@]}"; batch=(); fi
 			case $tok in
 			'*+')
 				local -a idx=()
@@ -2865,6 +2929,7 @@ session_line() {
 		fi
 	done
 	if ((${#batch[@]})); then session_trust "${batch[@]}"; fi
+	session_flush_purges purge_batch
 }
 
 cmd_interactive() {

tests/unit/backends.bats

@@ -785,3 +785,13 @@ zypp_conf() { # a "real" zypp.conf + locks file with one user lock, in the test
 	refute_output --partial 'skeptical-updater.'
 	[[ ! -e $STATE/zypper-private ]]
 }
+
+@test "pacman: dependent and dependency are simulated and purged together" {
+	use_fakes pacman
+	run skup --no-refresh <<<$'2x 1x\ny\nq'
+	assert_success
+	assert_line 'Purge su-dummy-a su-dummy-b now? [y/N] y'
+	assert_line 'purged: su-dummy-a su-dummy-b'
+	log_has 'pacman -Rs --print --print-format %n -- su-dummy-a su-dummy-b'
+	log_has 'pacman -Rns --noconfirm -- su-dummy-a su-dummy-b'
+}

tests/unit/cli.bats

@@ -24,12 +24,14 @@ setup() { common_setup; }
 	assert_line 'usage: skeptical-updater [options] [command]'
 }
 
-@test "--version and -V print the version" {
+@test "--version and -v print the version" {
 	run skup --version
 	assert_success
-	assert_output 'skeptical-updater 0.1.0'
-	run skup -V
-	assert_output 'skeptical-updater 0.1.0'
+	assert_output --regexp '^skeptical-updater [0-9]+\.[0-9]+\.[0-9]+(\+(alpha|beta|rc)[.-]?[0-9]+)?$'
+	local version=$output
+	run skup -v
+	assert_success
+	assert_output "$version"
 }
 
 @test "an unknown option is a usage error (exit 1)" {

tests/unit/fakes/pacman/pacman

@@ -137,21 +137,20 @@ case $op in
 -Rs)
 	((print)) || exit 98
 	tg=${targets[0]}
-	if [[ -n ${FAKE_PACMAN_RS_REFUSE:-} || $tg == su-dummy-b ]]; then
+	if [[ -n ${FAKE_PACMAN_RS_REFUSE:-} || " ${targets[*]} " == *' su-dummy-b '* && " ${targets[*]} " != *' su-dummy-a '* ]]; then
 		echo "checking dependencies..."
 		echo ":: removing $tg breaks dependency '$tg' required by su-dummy-a"
 		echo "error: failed to prepare transaction (could not satisfy dependencies)" >&2
 		exit 1
 	fi
-	case $tg in
-	su-dummy-a) printf '%s\n' su-dummy-a su-dummy-b ;; # b was installed as a dependency of a
-	su-dummy-c | glib2 | expat | ca-certificates-mozilla | pfetch | su-dummy-aur) echo "$tg" ;; # (the last two: foreign, AUR)
-	*)
-		echo "error: target not found: $tg" >&2
-		exit 1
-		;;
-	esac
-	for r in ${FAKE_PACMAN_RS_EXTRA:-}; do [[ ${r%%:*} == "$tg" ]] && echo "${r#*:}"; done
+	for tg in "${targets[@]}"; do
+		case $tg in
+		su-dummy-a) printf '%s\n' su-dummy-a su-dummy-b ;;
+		su-dummy-b | su-dummy-c | glib2 | expat | ca-certificates-mozilla | pfetch | su-dummy-aur) echo "$tg" ;;
+		*) echo "error: target not found: $tg" >&2; exit 1 ;;
+		esac
+		for r in ${FAKE_PACMAN_RS_EXTRA:-}; do [[ ${r%%:*} == "$tg" ]] && echo "${r#*:}"; done
+	done
 	;;
 -Rns)
 	rc=$(fake_rc FAKE_PACMAN_RNS_RC 0)

tests/unit/interactive.bats

@@ -457,3 +457,82 @@ UPGRADE='apt-get -y -o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--forc
 	assert_line ' [3]  su-dummy-c  1.0  ->  2.0  file:/srv/su-repo ./  [held]'
 	assert_line 'su-dummy-c: dummy package su-dummy-c for skeptical-updater tests'
 }
+
+@test "Nx: consecutive purges use one transaction including orphans" {
+	FAKE_APT_AUTO_ORPHANS=su-dummy-a:su-dummy-b run skup --no-refresh <<<$'1x 3x\ny\nq'
+	assert_success
+	assert_line 'Purge su-dummy-a su-dummy-c now? This also removes: su-dummy-b [y/N] y'
+	assert_line 'purged: su-dummy-a su-dummy-b su-dummy-c'
+	assert_line 'Nothing left to upgrade.'
+	log_has 'apt-get -y purge su-dummy-a su-dummy-b su-dummy-c'
+}
+
+@test "Nx: other commands flush the batch before resolving removed rows" {
+	FAKE_APT_AUTO_ORPHANS=su-dummy-a:su-dummy-b run skup --no-refresh <<<$'1x 2? 3x\ny\ny\nq'
+	assert_success
+	assert_line 'purged: su-dummy-a su-dummy-b'
+	assert_output --partial 'no package [2] in the list'
+	assert_line 'Purge su-dummy-c now? [y/N] y'
+	assert_line 'purged: su-dummy-c'
+}
+
+@test "Nx: a trust command cannot act on a removed row" {
+	FAKE_APT_AUTO_ORPHANS=su-dummy-a:su-dummy-b run skup --no-refresh <<<$'1x 2+\ny\nq'
+	assert_success
+	assert_output --partial 'no package [2] in the list'
+	assert_line 'purged: su-dummy-a su-dummy-b'
+}
+
+@test "Nx: duplicate targets are purged once" {
+	run skup --no-refresh <<<$'3x 3x\ny\nq'
+	assert_success
+	assert_line 'Purge su-dummy-c now? [y/N] y'
+	assert_line 'purged: su-dummy-c'
+	log_has 'apt-get -y purge su-dummy-c'
+}
+
+@test "Nx: a refused target does not prevent other purges" {
+	run skup --no-refresh <<<$'2x 3x\ny\nl\nq'
+	assert_success
+	assert_line 'not purged: su-dummy-b is required by: su-dummy-a - purge the dependents first'
+	assert_line 'purged: su-dummy-c'
+	log_has 'apt-get -y purge su-dummy-c'
+}
+
+@test "Nx: invalid numbers do not interrupt a batch" {
+	FAKE_APT_AUTO_ORPHANS=su-dummy-a:su-dummy-b run skup --no-refresh <<<$'1x 9x 3x\ny\nq'
+	assert_success
+	assert_output --partial 'no package [9] in the list'
+	assert_line 'purged: su-dummy-a su-dummy-b su-dummy-c'
+	log_has 'apt-get -y purge su-dummy-a su-dummy-b su-dummy-c'
+}
+
+@test "Nx: rejecting the prompt purges nothing" {
+	run skup --no-refresh <<<$'1x 3x\nn\nl\nq'
+	assert_success
+	assert_line 'not purged: su-dummy-a su-dummy-c'
+	assert_line '3 upgradable, 0 trusted (hidden, use --all to show), 3 to review:'
+	log_lacks '^apt-get -y purge'
+}
+
+@test "Nx: failed transaction keeps all rows" {
+	FAKE_APT_PURGE_RC=100 run skup --no-refresh <<<$'1x 3x\nyes\nl\nq'
+	assert_success
+	assert_output --partial 'purge of su-dummy-a su-dummy-c failed (apt exited 100); the rows stay in the list'
+	assert_line '3 upgradable, 0 trusted (hidden, use --all to show), 3 to review:'
+}
+
+@test "Nx: a dependent and dependency are planned together" {
+	FAKE_APT_AUTO_ORPHANS=su-dummy-a:su-dummy-b run skup --no-refresh <<<$'2x 1x\ny\nq'
+	assert_success
+	assert_line 'Purge su-dummy-a su-dummy-b now? [y/N] y'
+	assert_line 'purged: su-dummy-a su-dummy-b'
+	log_has 'apt-get -y purge su-dummy-a su-dummy-b'
+}
+
+@test "Nx: unexpected removals never leak into another target's purge" {
+	FAKE_APT_SIM_EXTRA=su-dummy-a:su-dummy-c run skup --no-refresh <<<$'1x 2x\ny\nq'
+	assert_success
+	assert_output --partial 'would also remove su-dummy-c'
+	log_lacks '^apt-get -y purge'
+}