package com.atlassian.scheduler.util;
   
   import com.google.common.collect.ImmutableMap;
   import org.junit.Test;
   
   import java.io.Serializable;
   import java.util.Date;
   import java.util.Map;
   
  import static com.atlassian.scheduler.util.Safe.copy;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotSame;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertSame;
  import static org.junit.Assert.assertTrue;
  
  /**
   * @since v1.0
   */
  public class SafeTest {
      @Test
      public void testCopyDateNull() {
          assertNull(copy((Date) null));
      }
  
      @Test
      public void testCopyDate() {
          final Date now = new Date();
          final Date copy = copy(now);
          assertEquals(now, copy);
          assertNotSame(now, copy);
      }
  
      @Test
      public void testCopyMapNull() {
          final Map<String, Serializable> map = copy((Map<String, Serializable>) null);
          assertTrue("Should be an ImmutableMap", map instanceof ImmutableMap);
      }
  
      @Test
      public void testCopyMapKnownImmutable() {
          final ImmutableMap<String, Serializable> map = ImmutableMap.<String, Serializable>builder()
                  .put("Hello", 42L)
                  .put("World", true)
                  .build();
          assertSame(map, copy(map));
      }
  }