Stub route discovery in network QR tests

test/shell.d/network-qr-test.sh

@@ -8,6 +8,12 @@ tmp=$(mktemp -d)
 trap 'rm -rf "$tmp"' EXIT
 mkdir -p "$tmp/bin"
 
+# Loopback is never wireless, so exercise the connected-Wi-Fi fallback.
+cat >"$tmp/bin/ip" <<'EOF'
+#!/bin/bash
+printf '1.1.1.1 dev lo\n'
+EOF
+
 cat >"$tmp/bin/nmcli" <<'EOF'
 #!/bin/bash
 if [[ $* == *"DEVICE,TYPE,STATE"* ]]; then
@@ -28,13 +34,13 @@ payload=$(</dev/stdin)
 printf '%s' "$payload" >"$QR_PAYLOAD_FILE"
 printf '##    \n  ##  \n    ##\n'
 EOF
-chmod +x "$tmp/bin/nmcli" "$tmp/bin/qrencode"
+chmod +x "$tmp/bin/ip" "$tmp/bin/nmcli" "$tmp/bin/qrencode"
 
 run_success_case() {
   local description=$1 fields=$2 expected_payload=$3
   shift 3
   local output meta matrix payload arg with_meta=false
-  local expected_matrix expected_security expected_ssid expected_iface="*"
+  local expected_matrix expected_security expected_ssid expected_iface="wlan0"
 
   for arg in "$@"; do
     [[ $arg == "--meta" ]] && with_meta=true || expected_iface=$arg
@@ -49,9 +55,8 @@ run_success_case() {
     meta=$(head -n1 <<<"$output")
     matrix=$(tail -n +2 <<<"$output")
 
-    # The meta line leads with the shared interface, security, and SSID. With
-    # no interface argument the helper detects one from the live host, so that
-    # field is only pinned when the case pinned it.
+    # The metadata reports the requested interface, or the connected Wi-Fi
+    # interface supplied by the nmcli stub when no interface was requested.
     expected_security=${expected_payload#WIFI:T:}
     expected_security=${expected_security%%;*}
     expected_ssid=$(head -n1 <<<"$fields")