@Test
public void testBuild_empty() {

    final ContextBuilder contextBuilder = new ContextBuilder();
    final Context context = contextBuilder.build();
    assertNotNull(context);
    assertNull(context.getConfiguration());
    final Map<String, Integer> dimensionConfiguration = context.getDimensionConfiguration();
    assertNotNull(dimensionConfiguration);
    assertEquals(0, dimensionConfiguration.size());
    assertNull(context.getMatchup());
    assertNull(context.getObservation());
    assertNull(context.getObservationReader());
    assertNull(context.getReferenceObservationReader());
    assertNull(context.getTargetVariable());
}