@Test
public void shouldConvertToJavaStream() {
final Value<Integer> value = of(1, 2, 3);
final java.util.stream.Stream<Integer> s1 = value.toJavaStream();
if (value.isSingleValued()) {
final java.util.stream.Stream<Integer> s2 = java.util.stream.Stream.of(1);
assertThat(List.ofAll(s1::iterator)).isEqualTo(List.ofAll(s2::iterator));
} else {
final java.util.stream.Stream<Integer> s2 = java.util.stream.Stream.of(1, 2, 3);
assertThat(List.ofAll(s1::iterator)).isEqualTo(List.ofAll(s2::iterator));
}
}
@Test
public void shouldConvertNonEmptyValueToMatchValue() {
final Value<Integer> value = of(1);
final String actual =
value.match().when((Value<Integer> v) -> v.getOrElse(-1) == 1).then("ok").getOrElse("nok");
assertThat(actual).isEqualTo("ok");
}
@Test
public void shouldPerformsActionOnEachElement() {
final int[] consumer = new int[1];
final Value<Integer> value = of(1, 2, 3);
value.forEach(i -> consumer[0] += i);
assertThat(consumer[0]).isEqualTo(value.isSingleValued() ? 1 : 6);
}
@Test
public void shouldBeAwareOfExistingElement() {
final Value<Integer> value = of(1, 2);
if (value.isSingleValued()) {
assertThat(value.exists(i -> i == 1)).isTrue();
} else {
assertThat(value.exists(i -> i == 2)).isTrue();
}
}
@Test
public void shouldConvertToJavaMap() {
final Value<Integer> value = of(1, 2, 3);
final java.util.Map<Integer, Integer> map = value.toJavaMap(v -> Tuple.of(v, v));
if (value.isSingleValued()) {
assertThat(map).isEqualTo(JavaCollections.javaMap(1, 1));
} else {
assertThat(map).isEqualTo(JavaCollections.javaMap(1, 1, 2, 2, 3, 3));
}
}
@Test
public void shouldConvertToSet() {
final Value<Integer> value = of(1, 2, 3);
final Set<Integer> set = value.toSet();
if (value.isSingleValued()) {
assertThat(set).isEqualTo(HashSet.of(1));
} else {
assertThat(set).isEqualTo(HashSet.of(1, 2, 3));
}
}
@Test
public void shouldConvertToJavaSet() {
final Value<Integer> value = of(1, 2, 3);
final java.util.Set<Integer> set = value.toJavaSet();
if (value.isSingleValued()) {
assertThat(set).isEqualTo(JavaCollections.javaSet(1));
} else {
assertThat(set).isEqualTo(JavaCollections.javaSet(1, 2, 3));
}
}
@Test
public void shouldConvertToJavaArray() {
final Value<Integer> value = of(1, 2, 3);
final Integer[] ints = value.toJavaArray(Integer.class);
if (value.isSingleValued()) {
assertThat(ints).isEqualTo(new int[] {1});
} else {
assertThat(ints).isEqualTo(new int[] {1, 2, 3});
}
}
@Test
public void shouldConvertToJavaList() {
final Value<Integer> value = of(1, 2, 3);
final java.util.List<Integer> list = value.toJavaList();
if (value.isSingleValued()) {
assertThat(list).isEqualTo(Arrays.asList(1));
} else {
assertThat(list).isEqualTo(Arrays.asList(1, 2, 3));
}
}
@Test
public void shouldConvertToStream() {
final Value<Integer> value = of(1, 2, 3);
final Stream<Integer> stream = value.toStream();
if (value.isSingleValued()) {
assertThat(stream).isEqualTo(Stream.of(1));
} else {
assertThat(stream).isEqualTo(Stream.of(1, 2, 3));
}
}
@Test
public void shouldConvertToVector() {
final Value<Integer> value = of(1, 2, 3);
final Vector<Integer> vector = value.toVector();
if (value.isSingleValued()) {
assertThat(vector).isEqualTo(Vector.of(1));
} else {
assertThat(vector).isEqualTo(Vector.of(1, 2, 3));
}
}
@Test
public void shouldConvertToCharSeq() {
Value<Character> v = of('a', 'b', 'c');
assertThat(
Match.of(v)
.whenTypeIn(Iterator.class)
.then(Iterator.of("ignore").toString())
.getOrElse(v.toString()))
.isEqualTo(v.toCharSeq().toString());
}
@Test
public void shouldConvertToQueue() {
final Value<Integer> value = of(1, 2, 3);
final Queue<Integer> queue = value.toQueue();
if (value.isSingleValued()) {
assertThat(queue).isEqualTo(Queue.of(1));
} else {
assertThat(queue).isEqualTo(Queue.of(1, 2, 3));
}
}
@Test
public void shouldConvertToMap() {
final Value<Integer> value = of(1, 2, 3);
final Map<Integer, Integer> map = value.toMap(v -> Tuple.of(v, v));
if (value.isSingleValued()) {
assertThat(map).isEqualTo(HashMap.of(1, 1));
} else {
assertThat(map).isEqualTo(HashMap.empty().put(1, 1).put(2, 2).put(3, 3));
}
}
@Test
public void shouldConvertToList() {
final Value<Integer> value = of(1, 2, 3);
final List<Integer> list = value.toList();
if (value.isSingleValued()) {
assertThat(list).isEqualTo(List.of(1));
} else {
assertThat(list).isEqualTo(List.of(1, 2, 3));
}
}
@Test
public void shouldConvertToArray() {
final Value<Integer> value = of(1, 2, 3);
final Array<Integer> array = value.toArray();
if (value.isSingleValued()) {
assertThat(array).isEqualTo(Array.of(1));
} else {
assertThat(array).isEqualTo(Array.of(1, 2, 3));
}
}
@Test
public void shouldConvertEmptyValueToMatchValue() {
final Value<Integer> value = empty();
final String actual = value.match().when(Value<Integer>::isEmpty).then("ok").getOrElse("nok");
assertThat(actual).isEqualTo("ok");
}