implement fix for color mode default

tests/test-queue-defaults.sh

@@ -0,0 +1,128 @@
+#!/usr/bin/env bash
+# Job-level check that PRINTER_OPTIONS queue defaults reach the emitted job.
+#
+# The authority for this test is the PostScript that cupsd sends to the
+# printer, not a settings file and NOT `lpoptions -p <queue> -l`: that command
+# renders PPD Boolean options incorrectly (it shows `TonerSaveMode ... *False`
+# even when the queue default is `True`), which is exactly the misreading this
+# test guards against.
+#
+# Why `cupsfilter` and not "read cupsd's spool file after `lp`": with no
+# reachable printer the job sticks at "The printer may not exist or is
+# unavailable", the filters never run, and the spool file still holds the
+# unfiltered input PDF. `cupsfilter -p /etc/cups/ppd/<queue>.ppd` produces the
+# same `%%BeginFeature`/effect-line structure without needing a printer.
+#
+# Verified against cups-daemon 2.4.2-3+deb12u9 (Debian bookworm, the base of
+# Containerfile).
+set -euo pipefail
+
+IMAGE="${IMAGE:-printserver:latest}"
+QUEUE="${QUEUE:-HL4150CDN}"
+CONTAINER="${CONTAINER:-printserver-queue-defaults-test}"
+SAMPLE="${SAMPLE:-/usr/share/cups/data/default-testpage.pdf}"
+PPD="/etc/cups/ppd/${QUEUE}.ppd"
+
+# The documented PRINTER_OPTIONS example from the spec / README.
+PRINTER_OPTIONS_VALUE="BRColorMode=Vivid TonerSaveMode=False"
+
+pass=0
+fail=0
+
+cleanup() {
+    podman rm -f "${CONTAINER}" >/dev/null 2>&1 || true
+}
+trap cleanup EXIT
+
+check() {
+    # check <label> <postscript-file> <expected-line>
+    local label="$1" file="$2" expected="$3"
+    if podman exec "${CONTAINER}" grep -aqF -- "${expected}" "${file}"; then
+        echo "PASS: ${label}: found '${expected}'"
+        pass=$((pass + 1))
+    else
+        echo "FAIL: ${label}: expected '${expected}' in ${file}"
+        echo "      actual option features:"
+        podman exec "${CONTAINER}" sh -c \
+            "grep -ao '%%BeginFeature: \\*[A-Za-z0-9]*' '${file}' | sort -u | sed 's/^/        /'" \
+            || true
+        fail=$((fail + 1))
+    fi
+}
+
+echo "== building ${IMAGE} =="
+podman build -t "${IMAGE}" .
+
+echo "== starting container with PRINTER_OPTIONS=\"${PRINTER_OPTIONS_VALUE}\" =="
+podman rm -f "${CONTAINER}" >/dev/null 2>&1 || true
+podman run -d --name "${CONTAINER}" \
+    -e PRINTER_IP=192.0.2.1 \
+    -e "PRINTER_OPTIONS=${PRINTER_OPTIONS_VALUE}" \
+    "${IMAGE}" >/dev/null
+
+ready=0
+for _ in $(seq 1 90); do
+    if podman logs "${CONTAINER}" 2>&1 | grep -q 'ready: CUPS on 631/tcp'; then
+        ready=1
+        break
+    fi
+    sleep 1
+done
+if [ "${ready}" -ne 1 ]; then
+    echo "FAIL: container did not reach 'ready: CUPS on 631/tcp'"
+    podman logs "${CONTAINER}" 2>&1 | tail -20
+    exit 1
+fi
+
+# `podman logs` can lag behind the container by a few seconds, and the ready
+# line is printed after the option lines, so poll the log for each assignment
+# instead of inspecting it once.
+for opt in ${PRINTER_OPTIONS_VALUE}; do
+    applied=0
+    for _ in $(seq 1 30); do
+        if podman logs "${CONTAINER}" 2>&1 | grep -qF "queue default ${opt} applied"; then
+            applied=1
+            break
+        fi
+        sleep 1
+    done
+    if [ "${applied}" -ne 1 ]; then
+        echo "FAIL: entrypoint did not report '${opt}' as applied"
+        podman logs "${CONTAINER}" 2>&1 | grep -i 'entrypoint\|warning' | tail -10
+        exit 1
+    fi
+done
+echo "PASS: entrypoint applied every PRINTER_OPTIONS assignment"
+
+echo "== queue state cross-check (config views, not the acceptance signal) =="
+# TonerSaveMode is deliberately not asserted here: see the header comment.
+podman exec "${CONTAINER}" lpoptions -p "${QUEUE}" -l | grep BRColorMode
+podman exec "${CONTAINER}" grep -E '^\*Default(BRColorMode|TonerSaveMode)' "${PPD}"
+
+echo "== filtering: queue defaults =="
+podman exec "${CONTAINER}" sh -c \
+    "cupsfilter -p '${PPD}' -m application/vnd.cups-postscript '${SAMPLE}' > /tmp/qd.ps 2>/dev/null"
+
+check "queue default BRColorMode=Vivid" /tmp/qd.ps "%%BeginFeature: *BRColorMode Vivid"
+check "queue default BRColorMode=Vivid (effect)" /tmp/qd.ps "<</UseCIEColor true>>setpagedevice"
+check "queue default TonerSaveMode=False" /tmp/qd.ps "%%BeginFeature: *TonerSaveMode False"
+
+# A per-job option must win over the queue default: this is the regression guard
+# that the options channel is live rather than pinned to a vendor value.
+echo "== filtering: per-job override =="
+podman exec "${CONTAINER}" sh -c \
+    "cupsfilter -p '${PPD}' -m application/vnd.cups-postscript -o BRColorMode=None '${SAMPLE}' > /tmp/override.ps 2>/dev/null"
+
+check "per-job BRColorMode=None wins" /tmp/override.ps "%%BeginFeature: *BRColorMode None"
+
+if podman exec "${CONTAINER}" grep -aqF -- "%%BeginFeature: *BRColorMode Vivid" /tmp/override.ps; then
+    echo "FAIL: per-job override: queue default Vivid leaked into the explicit None job"
+    fail=$((fail + 1))
+else
+    echo "PASS: per-job override: queue default Vivid did not leak into the explicit None job"
+    pass=$((pass + 1))
+fi
+
+echo
+echo "== result: ${pass} passed, ${fail} failed =="
+[ "${fail}" -eq 0 ] || exit 1