@Test
public void testParticipateToGlobalTransactionWhenRequestGlobalTransactionNotPresent() {

    // Setup
    final Optional<RequestGlobalTransaction> orgt = Optional.empty();
    // Run the test
    final GlobalTransaction result = businessGlobalTransactionServiceImplUnderTest.participateToGlobalTransaction(orgt);
    // Verify the results
    assertEquals(null, result);
}