/*
 *
 * 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.util;

import org.apache.hadoop.hbase.MediumTests;
import org.apache.hadoop.hbase.SmallTests;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import static junit.framework.Assert.assertEquals;

/**
 * Tests that the incrementing environment edge increments time instead of using
 * the default.
 */
@Category(SmallTests.class)
public class TestIncrementingEnvironmentEdge {

  @Test
  public void testGetCurrentTimeUsesSystemClock() {
    IncrementingEnvironmentEdge edge = new IncrementingEnvironmentEdge(1);
    assertEquals(1, edge.currentTimeMillis());
    assertEquals(2, edge.currentTimeMillis());
    assertEquals(3, edge.currentTimeMillis());
    assertEquals(4, edge.currentTimeMillis());
  }

}

