feat: build CouchOS Melee appliance

tests/test_setup_modes.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+TMP_DIR="$(mktemp -d)"
+trap 'rm -rf "${TMP_DIR}"' EXIT
+BIN_DIR="${TMP_DIR}/bin"
+LOG_FILE="${TMP_DIR}/calls.log"
+mkdir -p "${BIN_DIR}"
+
+cat >"${BIN_DIR}/id" <<'EOF'
+#!/usr/bin/env bash
+set -Eeuo pipefail
+if [[ "${1:-}" == "-u" && "${2:-}" == "couch" ]]; then
+  exit 1
+fi
+exec /usr/bin/id "$@"
+EOF
+
+cat >"${BIN_DIR}/useradd" <<EOF
+#!/usr/bin/env bash
+set -Eeuo pipefail
+printf 'useradd %s\n' "\$*" >>"${LOG_FILE}"
+EOF
+
+chmod 0755 "${BIN_DIR}/id" "${BIN_DIR}/useradd"
+
+output="$(
+  PATH="${BIN_DIR}:${PATH}" \
+  bash -c '
+    set -Eeuo pipefail
+    source "'"${REPO_ROOT}"'/setup.sh"
+    MODE="dry-run"
+    COUCH_UID=""
+    ensure_couch_user
+    ensure_runtime_config
+  '
+)"
+
+grep -Fq '[dry-run] useradd --create-home --home-dir /home/couch --shell /bin/bash --user-group couch' <<<"${output}"
+grep -Fq '/run/user/<missing-couch-uid>' <<<"${output}"
+
+check_output_file="${TMP_DIR}/check.out"
+set +e
+PATH="${BIN_DIR}:${PATH}" bash "${REPO_ROOT}/setup.sh" --phase couch --check >"${check_output_file}" 2>&1
+status=$?
+set -e
+
+if [[ "${status}" -eq 0 ]]; then
+  printf 'expected setup --check to fail on missing couch user\n' >&2
+  exit 1
+fi
+
+grep -Fq '[check] FAIL couch user missing' "${check_output_file}"
+grep -Fq '[check] FAIL /home/couch/.config/couchd/runtime.json missing' "${check_output_file}"