EpochConverterTest.java

/*
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2026, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v2.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.classic.pattern;

import ch.qos.logback.classic.spi.LoggingEvent;
import org.junit.jupiter.api.Test;

import java.time.Instant;
import java.util.Collections;

import static org.junit.jupiter.api.Assertions.assertEquals;

public class EpochConverterTest {
    EpochConverter ec = new EpochConverter();

    @Test
    public void withDefaultConfiguration() {
        ec.setOptionList(null);
        ec.start();
        LoggingEvent le = new LoggingEvent();
        Instant instant = Instant.parse("2026-01-15T10:15:30Z");
        instant = instant.plusMillis(321);
        le.setInstant(instant);

        String result = ec.convert(le);
        assertEquals("1768472130321", result); // includes millis
    }

    @Test
    public void withSecondsConfiguration() {
        ec.setOptionList(Collections.singletonList("seconds"));
        ec.start();
        LoggingEvent le = new LoggingEvent();
        Instant instant = Instant.parse("2026-01-15T10:15:30Z");
        instant = instant.plusMillis(321); // millis should be ignored
        le.setInstant(instant);

        String result = ec.convert(le);
        assertEquals("1768472130", result);
    }

    @Test
    public void withUnknownNonsenseConfiguration() {
        ec.setOptionList(Collections.singletonList("nonsense"));
        ec.start();
        LoggingEvent le = new LoggingEvent();
        Instant instant = Instant.parse("2026-01-15T10:15:30Z");
        instant = instant.plusMillis(321);
        le.setInstant(instant);

        String result = ec.convert(le);
        assertEquals("1768472130321", result); // includes millis, default behaviour
    }
}