@Test
public void one() {
final List<String> values = asList("a", "b", "a", "c", "a", "d", "e");
assertTrue(Algorithms.one(values, Conditions.eq("c")));
assertTrue(Algorithms.one(values, Conditions.eq("a")));
assertTrue(Algorithms.one(values, Conditions.eq("e")));
assertFalse(Algorithms.one(values, Conditions.eq("f")));
}
@SuppressWarnings({"ImplicitNumericConversion"})
@Test
public void count() {
final List<String> values = asList("a", "b", "a", "c", "a", "d", "e");
assertEquals(3, Algorithms.count(values, Conditions.eq("a")));
assertEquals(1, Algorithms.count(values, Conditions.eq("e")));
assertEquals(0, Algorithms.count(values, Conditions.eq("f")));
}
@Test
public void first() {
final List<String> values = asList("a", "b", "a", "c", "a", "d", "e");
assertEquals("c", Algorithms.first(values, Conditions.eq("c")));
assertEquals("a", Algorithms.first(values, Conditions.eq("a")));
assertEquals("e", Algorithms.first(values, Conditions.eq("e")));
assertNull(Algorithms.first(values, Conditions.eq("f")));
}
@Test
public void all() {
final List<String> values = asList("a", "b", "a", "c", "a", "d", "e");
assertTrue(Algorithms.all(values, Conditions.gte("a")));
assertTrue(Algorithms.all(values, Conditions.lt("z")));
assertTrue(Algorithms.all(values, Conditions.lte("e")));
assertFalse(Algorithms.all(values, Conditions.gt("b")));
assertFalse(Algorithms.all(values, Conditions.eq("a")));
assertFalse(Algorithms.all(values, Conditions.eq("f")));
}
@Test
public void select2() {
final List<String> values = asList("a", "b", "a", "c", "a", "d", "e");
assertEquals(
asList("a", "a", "a"),
Algorithms.select(values, new ArrayList<String>(10), Conditions.eq("a")));
}