@Test
public void testGetNodes1Node() {
AdjacencyList<String, Integer> myGraph = new AdjacencyList<String, Integer>();
boolean added = myGraph.addNode("A");
assertTrue(added);
Set<String> allNodes = myGraph.getNodes();
assertEquals(1, allNodes.size());
assertTrue(allNodes.contains("A"));
}
@Test
public void testSelfNode() {
AdjacencyList<String, Integer> myGraph = new AdjacencyList<String, Integer>();
boolean added = myGraph.addEdge("A", "A", new Integer(42));
assertFalse(added);
Set<String> allNodes = myGraph.getNodes();
assertEquals(0, allNodes.size());
assertFalse(allNodes.contains("A"));
assertFalse(allNodes.contains("B"));
}