TestConfigGroupExtractor.java

/**
 * Copyright 2015 StreamSets Inc.
 *
 * Licensed under 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 com.streamsets.datacollector.definition;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.streamsets.datacollector.config.ConfigGroupDefinition;
import com.streamsets.datacollector.definition.ConfigGroupExtractor;
import com.streamsets.pipeline.api.BatchMaker;
import com.streamsets.pipeline.api.ConfigGroups;
import com.streamsets.pipeline.api.Label;
import com.streamsets.pipeline.api.StageException;
import com.streamsets.pipeline.api.base.BaseSource;

import org.junit.Assert;
import org.junit.Test;

public class TestConfigGroupExtractor {

  public class InvalidGroup implements Label {

    @Override
    public String getLabel() {
      return "invalid";
    }
  }

  @ConfigGroups(InvalidGroup.class)
  public static class InvalidSource extends BaseSource {
    @Override
    public String produce(String lastSourceOffset, int maxBatchSize, BatchMaker batchMaker) throws StageException {
      return null;
    }
  }

  public enum Group1 implements Label {
    G1;

    @Override
    public String getLabel() {
      return "g1";
    }
  }

  public enum Group2 implements Label {
    G2;

    @Override
    public String getLabel() {
      return "g2";
    }
  }

  @ConfigGroups(Group1.class)
  public static class Source1 extends BaseSource {
    @Override
    public String produce(String lastSourceOffset, int maxBatchSize, BatchMaker batchMaker) throws StageException {
      return null;
    }
  }

  @ConfigGroups(Group2.class)
  public static class Source2 extends Source1 {
    @Override
    public String produce(String lastSourceOffset, int maxBatchSize, BatchMaker batchMaker) throws StageException {
      return null;
    }
  }

  @Test(expected = IllegalArgumentException.class)
  public void testExtractInvalidGroup() {
    ConfigGroupExtractor.get().extract(InvalidSource.class, "x");
  }

  @Test
  public void testExtractGroupsSource1() {
    ConfigGroupDefinition def = ConfigGroupExtractor.get().extract(Source1.class, "x");
    Assert.assertEquals(ImmutableSet.of("G1"), def.getGroupNames());
    Assert.assertEquals(1, def.getClassNameToGroupsMap().size());
    Assert.assertEquals(1, def.getGroupNameToLabelMapList().size());
    Assert.assertEquals(ImmutableList.of("G1"), def.getClassNameToGroupsMap().get(Group1.class.getName()));
    Assert.assertEquals("G1", def.getGroupNameToLabelMapList().get(0).get("name"));
    Assert.assertEquals("g1", def.getGroupNameToLabelMapList().get(0).get("label"));
  }

  @Test
  public void testExtractGroupsSource2() {
    ConfigGroupDefinition def = ConfigGroupExtractor.get().extract(Source2.class, "x");
    Assert.assertEquals(ImmutableSet.of("G1", "G2"), def.getGroupNames());
    Assert.assertEquals(2, def.getClassNameToGroupsMap().size());
    Assert.assertEquals(2, def.getGroupNameToLabelMapList().size());
    Assert.assertEquals(ImmutableList.of("G1"), def.getClassNameToGroupsMap().get(Group1.class.getName()));
    Assert.assertEquals(ImmutableList.of("G2"), def.getClassNameToGroupsMap().get(Group2.class.getName()));
    Assert.assertEquals("G1", def.getGroupNameToLabelMapList().get(0).get("name"));
    Assert.assertEquals("g1", def.getGroupNameToLabelMapList().get(0).get("label"));
    Assert.assertEquals("G2", def.getGroupNameToLabelMapList().get(1).get("name"));
    Assert.assertEquals("g2", def.getGroupNameToLabelMapList().get(1).get("label"));
  }

}