TestShortenedFlowName.java

/**
 * 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,
 * 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.apache.hadoop.yarn.util.timeline;

import java.util.UUID;

import org.junit.jupiter.api.Test;

import org.apache.hadoop.yarn.conf.YarnConfiguration;

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

/**
 * Test case for limiting flow name size.
 */
public class TestShortenedFlowName {

  private static final String TEST_FLOW_NAME = "TestFlowName";

  @Test
  void testRemovingUUID() {
    String flowName = TEST_FLOW_NAME + "-" + UUID.randomUUID();
    flowName = TimelineUtils.removeUUID(flowName);
    assertEquals(TEST_FLOW_NAME, flowName);
  }

  @Test
  void testShortenedFlowName() {
    YarnConfiguration conf = new YarnConfiguration();
    String flowName = TEST_FLOW_NAME + UUID.randomUUID();
    conf.setInt(YarnConfiguration.FLOW_NAME_MAX_SIZE, 8);
    String shortenedFlowName = TimelineUtils.shortenFlowName(flowName, conf);
    assertEquals("TestFlow", shortenedFlowName);
    conf.setInt(YarnConfiguration.FLOW_NAME_MAX_SIZE,
        YarnConfiguration.FLOW_NAME_DEFAULT_MAX_SIZE);
    shortenedFlowName = TimelineUtils.shortenFlowName(flowName, conf);
    assertEquals(TEST_FLOW_NAME, shortenedFlowName);
  }
}