@Test
public void testClosureAlwaysIncludesStart() {
Navigator<String> navigator = Navigators.forMultimap(ImmutableSetMultimap.<String, String>of());
assertEquals(ImmutableSet.of("A"), ImmutableSet.copyOf(Navigators.closure(navigator, "A")));
assertEquals(
ImmutableSet.of("A"),
ImmutableSet.copyOf(Navigators.closureOfMany(navigator, ImmutableList.of("A"))));
}
@Test
public void testClosure() {
TransitiveRelation<String> relation = Relations.newTransitiveRelation();
relation.relate("A", "B");
relation.relate("B", "C");
Navigator<String> direct = relation.direct();
assertEquals(
ImmutableSet.of("A", "B", "C"), ImmutableSet.copyOf(Navigators.closure(direct, "A")));
assertEquals(ImmutableSet.of("B", "C"), ImmutableSet.copyOf(Navigators.closure(direct, "B")));
assertEquals(ImmutableSet.of("C"), ImmutableSet.copyOf(Navigators.closure(direct, "C")));
}
@Test
public void testForMultimap_domain() {
Navigator<String> navigator =
Navigators.forMultimap(ImmutableSetMultimap.of("a", "a1", "a", "a2", "b", "b"));
assertEquals(ImmutableSet.of("a", "b"), ImmutableSet.copyOf(navigator.domain()));
}
@Test
public void testForFunction_Serializable() {
Navigator<Integer> navigator =
SerializationUtils.serializedCopy(
Navigators.forFunction(ImmutableSet.of(1, 2, 3), new MyFun()));
assertEquals(ImmutableSet.of(1, 2, 3), ImmutableSet.copyOf(navigator.domain()));
assertEquals(ImmutableSet.of(2, 2), ImmutableSet.copyOf(navigator.related(1)));
assertEquals(ImmutableSet.of(4, 3), ImmutableSet.copyOf(navigator.related(2)));
assertEquals(ImmutableSet.of(6, 4), ImmutableSet.copyOf(navigator.related(3)));
}
@Test
public void testForFunction() {
Navigator<Integer> navigator =
Navigators.forFunction(
ImmutableSet.of(1, 2, 3),
new Function<Integer, Set<Integer>>() {
public Set<Integer> apply(Integer value) {
return ImmutableSet.of(value * 2, value + 1);
}
});
assertEquals(ImmutableSet.of(1, 2, 3), ImmutableSet.copyOf(navigator.domain()));
assertEquals(ImmutableSet.of(2, 2), ImmutableSet.copyOf(navigator.related(1)));
assertEquals(ImmutableSet.of(4, 3), ImmutableSet.copyOf(navigator.related(2)));
assertEquals(ImmutableSet.of(6, 4), ImmutableSet.copyOf(navigator.related(3)));
}