httpclient5/src/test/java/org/apache/hc/client5/http/impl/TestDefaultConnKeepAliveStrategy.java

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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
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 * KIND, either express or implied.  See the License for the
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package org.apache.hc.client5.http.impl;

import org.apache.hc.client5.http.ConnectionKeepAliveStrategy;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.protocol.HttpClientContext;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.HttpStatus;
import org.apache.hc.core5.http.message.BasicHttpResponse;
import org.apache.hc.core5.util.TimeValue;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

/**
 *  Simple tests for {@link DefaultConnectionKeepAliveStrategy}.
 */
public class TestDefaultConnKeepAliveStrategy {

    @Test
    public void testIllegalResponseArg() throws Exception {
        final HttpClientContext context = HttpClientContext.create();
        final ConnectionKeepAliveStrategy keepAliveStrat = new DefaultConnectionKeepAliveStrategy();
        Assertions.assertThrows(NullPointerException.class, () ->
                keepAliveStrat.getKeepAliveDuration(null, context));
    }

    @Test
    public void testNoKeepAliveHeader() throws Exception {
        final HttpClientContext context = HttpClientContext.create();
        context.setRequestConfig( RequestConfig.custom()
                .setConnectionKeepAlive(TimeValue.NEG_ONE_MILLISECOND)
                .build());
        final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_OK);
        final ConnectionKeepAliveStrategy keepAliveStrat = new DefaultConnectionKeepAliveStrategy();
        final TimeValue d = keepAliveStrat.getKeepAliveDuration(response, context);
        Assertions.assertEquals(TimeValue.NEG_ONE_MILLISECOND, d);
    }

    @Test
    public void testEmptyKeepAliveHeader() throws Exception {
        final HttpClientContext context = HttpClientContext.create();
        context.setRequestConfig( RequestConfig.custom()
                .setConnectionKeepAlive(TimeValue.NEG_ONE_MILLISECOND)
                .build());
        final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_OK);
        response.addHeader("Keep-Alive", "timeout, max=20");
        final ConnectionKeepAliveStrategy keepAliveStrat = new DefaultConnectionKeepAliveStrategy();
        final TimeValue d = keepAliveStrat.getKeepAliveDuration(response, context);
        Assertions.assertEquals(TimeValue.NEG_ONE_MILLISECOND, d);
    }

    @Test
    public void testInvalidKeepAliveHeader() throws Exception {
        final HttpClientContext context = HttpClientContext.create();
        context.setRequestConfig( RequestConfig.custom()
                .setConnectionKeepAlive(TimeValue.NEG_ONE_MILLISECOND)
                .build());
        final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_OK);
        response.addHeader("Keep-Alive", "timeout=whatever, max=20");
        final ConnectionKeepAliveStrategy keepAliveStrat = new DefaultConnectionKeepAliveStrategy();
        final TimeValue d = keepAliveStrat.getKeepAliveDuration(response, context);
        Assertions.assertEquals(TimeValue.NEG_ONE_MILLISECOND, d);
    }

    @Test
    public void testKeepAliveHeader() throws Exception {
        final HttpClientContext context = HttpClientContext.create();
        context.setRequestConfig( RequestConfig.custom()
                .setConnectionKeepAlive(TimeValue.NEG_ONE_MILLISECOND)
                .build());
        final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_OK);
        response.addHeader("Keep-Alive", "timeout=300, max=20");
        final ConnectionKeepAliveStrategy keepAliveStrat = new DefaultConnectionKeepAliveStrategy();
        final TimeValue d = keepAliveStrat.getKeepAliveDuration(response, context);
        Assertions.assertEquals(TimeValue.ofSeconds(300), d);
    }

}