import java.nio.file.Files;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * Extracted utility methods to parse daemon logs.
 */
final class DaemonLogFileUtils {
    private DaemonLogFileUtils() {}

    /**
     * Reads the last {@code tailSize} lines of the daemon log file and returns them as a single string.
     *
     * @param file the daemon log

    def "empty input produces specific output"() {
        expect:
        DaemonLogFileUtils.tail(log(""), 10) == "<<empty>>"
    }

    def "returns last line if the limit is one"() {
        given:
        def logFile = log("""\
            line1
            line2
            line3""")

        expect:
        DaemonLogFileUtils.tail(logFile, 1) == "line3"
    }

    def "input-ending eoln is ignored"() {

        return "{"
            + "pid=" + pid
            + ", daemonLog=" + daemonLog
            + '}';
    }

    private String tailDaemonLog() {
        try {
            String tail = DaemonLogFileUtils.tail(getDaemonLog(), TAIL_SIZE);
            return formatTail(tail);
        } catch (IOException e) {