@Test
public void testGetAllParameterNames() {

  Set<String> paramSet = new HashSet<>();
  paramSet.add( "param1" );
  paramSet.add( "param2" );
  paramSet.add( "param3" );
  final ParameterDependencyGraph dependencyGraph = new ParameterDependencyGraph( "param1",
    "param2", "param3" );
  assertEquals( paramSet, dependencyGraph.getAllParameterNames() );
  paramSet.add( "param4" );
  dependencyGraph.setAllParameterNames( paramSet );
  assertEquals( paramSet, dependencyGraph.getAllParameterNames() );
}