@Test
public void removeNode_nodeNotPresent() {
addNode(N1);
ImmutableSet<Integer> nodes = ImmutableSet.copyOf(network.nodes());
assertFalse(network.removeNode(NODE_NOT_IN_GRAPH));
assertThat(network.nodes()).containsExactlyElementsIn(nodes);
}
@Test
public void removeNode_existingNode() {
addEdge(E12, N1, N2);
addEdge(E41, N4, N1);
assertTrue(network.removeNode(N1));
assertThat(network.nodes()).containsExactly(N2, N4);
assertThat(network.edges()).doesNotContain(E12);
assertThat(network.edges()).doesNotContain(E41);
}
@Test
public void removeNode_queryAfterRemoval() {
addNode(N1);
Set<Integer> unused = network.adjacentNodes(N1); // ensure cache (if any) is populated
assertTrue(network.removeNode(N1));
try {
network.adjacentNodes(N1);
fail(ERROR_NODE_NOT_IN_GRAPH);
} catch (IllegalArgumentException e) {
assertNodeNotInGraphErrorMessage(e);
}
}
