test(plugins): cover selection and install guards

scripts/test-plugin-selection.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+set -euo pipefail
+summary=false
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --summary) summary=true; shift ;;
+    *) printf 'Unknown argument: %s\n' "$1" >&2; exit 1 ;;
+  esac
+done
+
+root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
+. "$root/scripts/lib/plugins.sh"
+
+names=(A B C)
+checked=(true false true)
+toggle_log=$(mktemp)
+trap 'rm -f -- "$toggle_log"' EXIT
+read_plugin_toggle_selection names checked <<< $'1\n2\ndone' > "$toggle_log"
+[ "$summary" = true ] || cat "$toggle_log"
+
+[ "${checked[0]}" = false ] || { printf 'Toggling checked entry 1 must uncheck it.\n' >&2; exit 1; }
+[ "${checked[1]}" = true ] || { printf 'Toggling unchecked entry 2 must check it.\n' >&2; exit 1; }
+[ "${checked[2]}" = true ] || { printf 'Entry 3 was never toggled and must stay unchanged.\n' >&2; exit 1; }
+
+read_plugin_toggle_selection names checked <<< '' > "$toggle_log"
+[ "${checked[0]}" = false ] && [ "${checked[1]}" = true ]
+test_plugin_output() {
+  printf 'download progress\nWARN test warning\n'
+  [ "$1" != fail ]
+}
+compact=$(summary=true run_plugin_command false test_plugin_output success)
+[ "$compact" = 'WARN test warning' ] || { printf 'Plugin summary lost warnings or leaked progress.\n' >&2; exit 1; }
+if diagnostics=$(summary=true run_plugin_command false test_plugin_output fail 2>&1); then
+  printf 'Plugin failure must fail.\n' >&2
+  exit 1
+fi
+[[ "$diagnostics" == *'download progress'* ]] && [[ "$diagnostics" == *'WARN test warning'* ]]
+selected=()
+plugin_installed() { printf 'Empty selection must not query installed plugins.\n' >&2; exit 1; }
+run_plugin_command() { printf 'Empty selection must not run commands.\n' >&2; exit 1; }
+install_configured_plugins "$root" both false false selected false
+uninstall_deselected_plugins "$root" both false selected false
+if read_plugin_toggle_selection names checked </dev/null > "$toggle_log" 2>&1; then
+  printf 'Closed input must fail instead of looping.\n' >&2
+  exit 1
+fi
+
+if [ "$summary" = true ]; then printf 'Tests: PASS | plugin selection\n'; else printf 'PASS plugin toggle selection: toggle and confirm\n'; fi