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package cgeo.geocaching.utils;
import cgeo.geocaching.Geocache;
import java.util.Set;
public class LeastRecentlyUsedSetTest extends AbstractLRUTest {
public static void testLruMode() {
final Set<String> set = new LeastRecentlyUsedSet<String>(5);
set.add("one");
set.add("two");
set.add("three");
// read does not change anything
set.contains("one");
set.add("four");
// re-put should update the order
set.add("three");
set.add("five");
// read does not change anything
set.contains("one");
set.add("six");
set.add("seven");
assertEquals("four, three, five, six, seven", colToStr(set));
}
public static void testRemoveEldestEntry() {
final LeastRecentlyUsedSet<Geocache> caches = new LeastRecentlyUsedSet<Geocache>(10);
final Geocache first = new Geocache();
first.setGeocode("1");
assertTrue(caches.add(first));
final Geocache second = new Geocache();
second.setGeocode("2");
assertTrue(caches.add(second));
assertEquals(2, caches.size());
assertTrue(caches.contains(first));
assertTrue(caches.contains(second));
// adding first cache again does not change set
assertFalse(caches.add(first));
assertEquals(2, caches.size());
for (int i = 3; i <= 10; i++) {
final Geocache cache = new Geocache();
cache.setGeocode(Integer.toString(i));
assertTrue(caches.add(cache));
}
assertEquals(10, caches.size());
assertTrue(caches.contains(first));
assertTrue(caches.contains(second));
final Geocache c11 = new Geocache();
c11.setGeocode("11");
assertTrue(caches.add(c11));
assertEquals(10, caches.size());
// first was used again, there second is the oldest and has been overwritten by 11
assertTrue(caches.contains(first));
assertFalse(caches.contains(second));
}
}
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