ApiVersionsTest.java example

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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,
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 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.kafka.clients;

import org.apache.kafka.common.protocol.ApiKeys;
import org.apache.kafka.common.record.RecordBatch;
import org.apache.kafka.common.requests.ApiVersionsResponse;
import org.junit.Test;

import java.util.Collections;

import static org.junit.Assert.assertEquals;

public class ApiVersionsTest {

    @Test
    public void testMaxUsableProduceMagic() {
        ApiVersions apiVersions = new ApiVersions();
        assertEquals(RecordBatch.CURRENT_MAGIC_VALUE, apiVersions.maxUsableProduceMagic());

        apiVersions.update("0", NodeApiVersions.create());
        assertEquals(RecordBatch.CURRENT_MAGIC_VALUE, apiVersions.maxUsableProduceMagic());

        apiVersions.update("1", NodeApiVersions.create(Collections.singleton(
                new ApiVersionsResponse.ApiVersion(ApiKeys.PRODUCE.id, (short) 0, (short) 2))));
        assertEquals(RecordBatch.MAGIC_VALUE_V1, apiVersions.maxUsableProduceMagic());

        apiVersions.remove("1");
        assertEquals(RecordBatch.CURRENT_MAGIC_VALUE, apiVersions.maxUsableProduceMagic());
    }

}