code: @Test public void testInvalidConstruction() throws Exception {
    try {
      new MockPoolEntry(null,Mockito.mock(HttpConnection.class),0L,TimeUnit.MILLISECONDS);
      Assert.fail("IllegalArgumentException should have been thrown");
    }
   catch (  IllegalArgumentException expected) {
    }
    try {
      new MockPoolEntry("stuff",null,0L,TimeUnit.MILLISECONDS);
      Assert.fail("IllegalArgumentException should have been thrown");
    }
   catch (  IllegalArgumentException expected) {
    }
    try {
      new MockPoolEntry("stuff",Mockito.mock(HttpConnection.class),0L,null);
      Assert.fail("IllegalArgumentException should have been thrown");
    }
   catch (  IllegalArgumentException expected) {
    }
  }
  