package com.atlassian.plugin.instrumentation;
   
   import com.atlassian.instrumentation.operations.OpTimer;
   import org.junit.Test;
   
   import java.util.Optional;
   
   import static com.atlassian.plugin.test.Matchers.notPresent;
   import static com.atlassian.plugin.test.Matchers.presentWithValue;
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.core.Is.is;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  
  public class TestTimer {
  
      @Test
      public void endsOnClose() {
          final OpTimer opTimer = mock(OpTimer.class);
  
          try (Timer timer = new Timer(Optional.of(opTimer))) {
              assertThat(timer.getOpTimer(), presentWithValue(is(opTimer)));
          }
  
          verify(opTimer).end();
      }
  
      @Test
      public void closesWithEmpty() {
          try (Timer timer = new Timer(Optional.empty())) {
              assertThat(timer.getOpTimer(), notPresent());
          }
      }
  }