public void testEquality() {
checkEqual(path, path, true);
checkEqual(path, n[0].asPath(), true);
Path p2 = path.append(newEdge(0).asPath());
checkEqual(path, p2, false);
path = path.append(g.anEdge(n[0], n[1]).asPath());
checkEqual(path, p2, true);
path = path.tailPath(0);
checkEqual(path, p2, false);
p2 = p2.tailPath(0);
checkEqual(path, p2, true);
}
public void testSlices() {
Edge[] edges = {newEdge(0), newEdge(1), newEdge(2), newEdge(3)};
for (Edge e : edges) {
path = path.append(e.asPath());
}
Path p2 = path.slice(1, 3);
assertEquals(2, p2.size());
assertEquals(edges[1], p2.steps().iterator().next().tailEdge());
assertEquals(edges[2], p2.tailEdge());
try {
path.slice(2, 1);
fail("Allowed illegal path slice arguments");
} catch (RuntimeException e) {
// ok
}
p2 = path.slice(1, 1);
assertEquals(0, p2.size());
assertEquals(p2.headNode(), p2.tailNode());
assertEquals(n[1], p2.headNode());
p2 = path.headPath(1);
assertEquals(1, p2.size());
assertEquals(n[0], p2.headNode());
assertEquals(n[1], p2.tailNode());
try {
path.headPath(-1);
fail("Allowed illegal head path argument");
} catch (RuntimeException e) {
// ok
}
p2 = path.tailPath(1);
assertEquals(1, p2.size());
assertEquals(n[4], p2.tailNode());
assertEquals(n[3], p2.headNode());
try {
path.tailPath(-1);
fail("Allowed illegal tail path argument");
} catch (RuntimeException e) {
// ok
}
}
public void testAppend() {
Path p2 = n[1].asPath();
p2 = p2.append(newEdge(1).asPath());
try {
Path p3 = path.append(p2);
fail("Allowed illegal path concatenation");
} catch (RuntimeException e) {
// ok
}
Path p3 = newEdge(0).asPath();
path = path.append(p3);
assertEquals(1, path.size());
path = path.append(newEdge(1).asPath());
assertEquals(2, path.size());
path = path.tailPath(1);
assertEquals(1, path.size());
assertEquals(n[1], path.headNode());
assertEquals(n[2], path.tailNode());
}