@Test(expected = IndexOutOfBoundsException.class)
public void removeFactMappingByIndex() {

    int testingIndex = 0;
    scesimModelDescriptor.addFactMapping(factIdentifier, expressionIdentifier);
    assertNotNull(scesimModelDescriptor.getFactMappingByIndex(testingIndex));
    scesimModelDescriptor.removeFactMappingByIndex(testingIndex);
    scesimModelDescriptor.getFactMappingByIndex(testingIndex);
}