content: /*
   * 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.kafka.streams;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class MockTimeTest {
  
      @Test
      public void shouldSetStartTime() {
          final TopologyTestDriver.MockTime time = new TopologyTestDriver.MockTime(42L);
          assertEquals(42L, time.milliseconds());
          assertEquals(42L * 1000L * 1000L, time.nanoseconds());
      }
  
      @Test
      public void shouldGetNanosAsMillis() {
          final TopologyTestDriver.MockTime time = new TopologyTestDriver.MockTime(42L);
          assertEquals(42L, time.hiResClockMs());
      }
  
      @Test
      public void shouldNotAllowNegativeSleep() {
          assertThrows(IllegalArgumentException.class,
              () -> new TopologyTestDriver.MockTime(42).sleep(-1L));
      }
  
      @Test
      public void shouldAdvanceTimeOnSleep() {
          final TopologyTestDriver.MockTime time = new TopologyTestDriver.MockTime(42L);
  
          assertEquals(42L, time.milliseconds());
          time.sleep(1L);
          assertEquals(43L, time.milliseconds());
          time.sleep(0L);
          assertEquals(43L, time.milliseconds());
          time.sleep(3L);
          assertEquals(46L, time.milliseconds());
      }
  
  }
  