/**
    * 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.hbase;
  
  import static org.junit.Assert.*;
  
  import java.io.IOException;
  import java.util.NoSuchElementException;
  import java.util.Queue;
  import java.util.LinkedList;
  
  import org.apache.hadoop.hbase.testclassification.SmallTests;
  import org.apache.hadoop.hbase.util.GsonUtil;
  import org.apache.hbase.thirdparty.com.google.gson.Gson;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  
  @Category(SmallTests.class)
  public class TestPerformanceEvaluation {
  
    @Test
    public void testSerialization() throws IOException {
      PerformanceEvaluation.TestOptions options = new PerformanceEvaluation.TestOptions();
      assertTrue(!options.isAutoFlush());
      options.setAutoFlush(true);
      Gson gson = GsonUtil.createGson().create();
      String optionsString = gson.toJson(options);
      PerformanceEvaluation.TestOptions optionsDeserialized =
        gson.fromJson(optionsString, PerformanceEvaluation.TestOptions.class);
      assertTrue(optionsDeserialized.isAutoFlush());
    }
  
    @Test
    public void testParseOptsWithThreads() {
      Queue<String> opts = new LinkedList<>();
      String cmdName = "sequentialWrite";
      int threads = 1;
      opts.offer(cmdName);
      opts.offer(String.valueOf(threads));
      PerformanceEvaluation.TestOptions options = PerformanceEvaluation.parseOpts(opts);
      assertNotNull(options);
      assertNotNull(options.getCmdName());
      assertEquals(cmdName, options.getCmdName());
      assertEquals(threads, options.getNumClientThreads());
    }
  
    @Test
    public void testParseOptsWrongThreads() {
      Queue<String> opts = new LinkedList<>();
      String cmdName = "sequentialWrite";
      opts.offer(cmdName);
      opts.offer("qq");
      try {
        PerformanceEvaluation.parseOpts(opts);
      } catch (IllegalArgumentException e) {
        System.out.println(e.getMessage());
        assertEquals("Command " + cmdName + " does not have threads number", e.getMessage());
        assertTrue(e.getCause() instanceof NumberFormatException);
      }
    }
  
    @Test
    public void testParseOptsNoThreads() {
      Queue<String> opts = new LinkedList<>();
      String cmdName = "sequentialWrite";
      try {
        PerformanceEvaluation.parseOpts(opts);
      } catch (IllegalArgumentException e) {
        System.out.println(e.getMessage());
        assertEquals("Command " + cmdName + " does not have threads number", e.getMessage());
        assertTrue(e.getCause() instanceof NoSuchElementException);
      }
    }
  
    @Test
    public void testSetBufferSizeOption() {
      PerformanceEvaluation.TestOptions opts = new PerformanceEvaluation.TestOptions();
      long bufferSize = opts.getBufferSize();
      assertEquals(bufferSize, 2l * 1024l * 1024l);
      opts.setBufferSize(64l * 1024l);
      bufferSize = opts.getBufferSize();
      assertEquals(bufferSize, 64l * 1024l);
    }
  }