expect(script).not.toContain('[[ "$OSTYPE" == "linux-gnu"* ]]');

});

it("installs Node.js with apk on Alpine before falling back to NodeSource", () => {

expect(script).toContain("finish_linux_node_install()");

expect(script).toContain('ui_info "Installing Node.js via apk (Alpine Linux detected)"');

expect(script).toContain(

'run_quiet_step "Installing Node.js" apk add --no-cache nodejs npm',

);

expect(script).toContain(

'run_quiet_step "Installing Node.js" sudo apk add --no-cache nodejs npm',

);

expect(script).toContain('if ! node_is_at_least_required; then');

const apkIndex = script.indexOf('if command -v apk &> /dev/null; then');

const nodeSourceIndex = script.indexOf('ui_info "Installing Node.js via NodeSource"');

expect(apkIndex).toBeGreaterThan(-1);

expect(nodeSourceIndex).toBeGreaterThan(apkIndex);

});

it("uses the apk Node.js installer path on Alpine", () => {

const result = runInstallShell(`

set -euo pipefail

source "${SCRIPT_PATH}"

OS=linux

require_sudo() { :; }

install_build_tools_linux() { return 0; }

is_root() { return 0; }

ui_info() { printf 'info:%s\\n' "$*"; }

ui_success() { printf 'success:%s\\n' "$*"; }

run_quiet_step() { printf 'step:%s|%s\\n' "$1" "\${*:2}"; }

apk() { :; }

finish_linux_node_install() { printf 'finish-linux-node\\n'; }

install_node

`);

expect(result.status).toBe(0);

expect(result.stdout).toContain("info:Installing Node.js via apk (Alpine Linux detected)");

expect(result.stdout).toContain("step:Installing Node.js|apk add --no-cache nodejs npm");

expect(result.stdout).toContain("finish-linux-node");

expect(result.stdout).not.toContain("Installing Node.js via NodeSource");

});

it("clears npm freshness filters for package installs", () => {

expect(script).toContain("env -u NPM_CONFIG_BEFORE -u npm_config_before");

expect(script).toContain('freshness_flag="--min-release-age=0"');