@Test
public void checkMaxNodeIndexOnAddAndRemove() {
assumeTrue(dataStructure instanceof INodeListDatastructure);
assumeTrue(Node.class.isAssignableFrom(elementClass));
INodeListDatastructure tempDS = (INodeListDatastructure) dataStructure;
Node[] dummies = new Node[10];
for (int i = 0; i < dummies.length; i++) {
dummies[i] = (Node) mock(this.elementClass);
when(dummies[i].getIndex()).thenReturn(i);
assertTrue(tempDS.add(dummies[i]));
assertEquals(i, tempDS.getMaxNodeIndex());
}
/*
* Since we don't know if the data structure really used the
* maxNodeIndex property and did not return the count property, we will
* run some more sophisticated tests now
*/
Node[] secondDummies = new Node[10];
int[] prevIndex = new int[10];
int lastIndex = tempDS.getMaxNodeIndex();
for (int i = 0; i < secondDummies.length; i++) {
secondDummies[i] = (Node) mock(this.elementClass);
prevIndex[i] = lastIndex;
lastIndex = lastIndex + Rand.rand.nextInt(i + 1) + 1;
when(secondDummies[i].getIndex()).thenReturn(lastIndex);
assertTrue(tempDS.add(secondDummies[i]));
assertEquals(lastIndex, tempDS.getMaxNodeIndex());
}
for (int i = secondDummies.length - 1; i >= 0; i--) {
assertTrue(tempDS.remove(secondDummies[i]));
assertEquals(prevIndex[i], tempDS.getMaxNodeIndex());
}
assertEquals(dummies[dummies.length - 1].getIndex(), tempDS.getMaxNodeIndex());
}
/**
* Retrieve the highest node index within this graph
*
* @return
*/
public int getMaxNodeIndex() {
return nodes.getMaxNodeIndex();
}