/*
 * Copyright 2008-2026 Async-IO.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.atmosphere.cpr;

import org.junit.jupiter.api.Test;

import jakarta.servlet.http.HttpServlet;

import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertInstanceOf;
import static org.junit.jupiter.api.Assertions.assertNotNull;

class AtmosphereServletTest {

    @Test
    void defaultConstructorCreatesServlet() {
        AtmosphereServlet servlet = new AtmosphereServlet();
        assertNotNull(servlet);
        assertInstanceOf(HttpServlet.class, servlet);
    }

    @Test
    void isFilterConstructor() {
        AtmosphereServlet servlet = new AtmosphereServlet(true);
        assertNotNull(servlet);
    }

    @Test
    void isFilterWithAutoDetectConstructor() {
        AtmosphereServlet servlet = new AtmosphereServlet(false, false);
        assertNotNull(servlet);
    }

    @Test
    void frameworkLazilyCreatedBeforeInit() {
        AtmosphereServlet servlet = new AtmosphereServlet();
        AtmosphereFramework fw = servlet.framework();
        assertNotNull(fw);
    }

    @Test
    void destroyBeforeInitDoesNotThrow() {
        AtmosphereServlet servlet = new AtmosphereServlet();
        assertDoesNotThrow(servlet::destroy);
    }

    @Test
    void newAtmosphereFrameworkCreatesInstance() {
        AtmosphereServlet servlet = new AtmosphereServlet();
        AtmosphereFramework framework = servlet.newAtmosphereFramework();
        assertNotNull(framework);
    }

    @Test
    void initializerIsNotNull() {
        AtmosphereServlet servlet = new AtmosphereServlet();
        assertNotNull(servlet.initializer);
    }

    @Test
    void extendsHttpServlet() {
        assertEquals(HttpServlet.class, AtmosphereServlet.class.getSuperclass());
    }

    private void assertEquals(Class<?> expected, Class<?> actual) {
        org.junit.jupiter.api.Assertions.assertEquals(expected, actual);
    }
}
