/* __ __ __ __ __ ___
* \ \ / / \ \ / / __/
* \ \/ / /\ \ \/ / /
* \____/__/ \__\____/__/.ɪᴏ
* ᶜᵒᵖʸʳᶦᵍʰᵗ ᵇʸ ᵛᵃᵛʳ ⁻ ˡᶦᶜᵉⁿˢᵉᵈ ᵘⁿᵈᵉʳ ᵗʰᵉ ᵃᵖᵃᶜʰᵉ ˡᶦᶜᵉⁿˢᵉ ᵛᵉʳˢᶦᵒⁿ ᵗʷᵒ ᵈᵒᵗ ᶻᵉʳᵒ
*/
package io.vavr.collection;
import io.vavr.Value;
import io.vavr.Tuple2;
import io.vavr.control.Option;
import org.junit.Test;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Collector;
public class ArrayTest extends AbstractIndexedSeqTest {
@Override
protected <T> Collector<T, ArrayList<T>, ? extends Seq<T>> collector() {
return Array.collector();
}
@Override
protected <T> Array<T> empty() {
return Array.empty();
}
@Override
protected <T> Array<T> of(T element) {
return Array.of(element);
}
@SuppressWarnings("varargs")
@SafeVarargs
@Override
protected final <T> Array<T> of(T... elements) {
return Array.of(elements);
}
@Override
protected <T> Array<T> ofAll(Iterable<? extends T> elements) {
return Array.ofAll(elements);
}
@Override
protected <T extends Comparable<? super T>> Array<T> ofJavaStream(java.util.stream.Stream<? extends T> javaStream) {
return Array.ofAll(javaStream);
}
@Override
protected Array<Boolean> ofAll(boolean... elements) {
return Array.ofAll(elements);
}
@Override
protected Array<Byte> ofAll(byte... elements) {
return Array.ofAll(elements);
}
@Override
protected Array<Character> ofAll(char... elements) {
return Array.ofAll(elements);
}
@Override
protected Array<Double> ofAll(double... elements) {
return Array.ofAll(elements);
}
@Override
protected Array<Float> ofAll(float... elements) {
return Array.ofAll(elements);
}
@Override
protected Array<Integer> ofAll(int... elements) {
return Array.ofAll(elements);
}
@Override
protected Array<Long> ofAll(long... elements) {
return Array.ofAll(elements);
}
@Override
protected Array<Short> ofAll(short... elements) {
return Array.ofAll(elements);
}
@Override
protected <T> Array<T> tabulate(int n, Function<? super Integer, ? extends T> f) {
return Array.tabulate(n, f);
}
@Override
protected <T> Array<T> fill(int n, Supplier<? extends T> s) {
return Array.fill(n, s);
}
@Override
protected Array<Character> range(char from, char toExclusive) {
return Array.range(from, toExclusive);
}
@Override
protected Array<Character> rangeBy(char from, char toExclusive, int step) {
return Array.rangeBy(from, toExclusive, step);
}
@Override
protected Array<Double> rangeBy(double from, double toExclusive, double step) {
return Array.rangeBy(from, toExclusive, step);
}
@Override
protected Array<Integer> range(int from, int toExclusive) {
return Array.range(from, toExclusive);
}
@Override
protected Array<Integer> rangeBy(int from, int toExclusive, int step) {
return Array.rangeBy(from, toExclusive, step);
}
@Override
protected Array<Long> range(long from, long toExclusive) {
return Array.range(from, toExclusive);
}
@Override
protected Array<Long> rangeBy(long from, long toExclusive, long step) {
return Array.rangeBy(from, toExclusive, step);
}
@Override
protected Array<Character> rangeClosed(char from, char toInclusive) {
return Array.rangeClosed(from, toInclusive);
}
@Override
protected Array<Character> rangeClosedBy(char from, char toInclusive, int step) {
return Array.rangeClosedBy(from, toInclusive, step);
}
@Override
protected Array<Double> rangeClosedBy(double from, double toInclusive, double step) {
return Array.rangeClosedBy(from, toInclusive, step);
}
@Override
protected Array<Integer> rangeClosed(int from, int toInclusive) {
return Array.rangeClosed(from, toInclusive);
}
@Override
protected Array<Integer> rangeClosedBy(int from, int toInclusive, int step) {
return Array.rangeClosedBy(from, toInclusive, step);
}
@Override
protected Array<Long> rangeClosed(long from, long toInclusive) {
return Array.rangeClosed(from, toInclusive);
}
@Override
protected Array<Long> rangeClosedBy(long from, long toInclusive, long step) {
return Array.rangeClosedBy(from, toInclusive, step);
}
@Override
@SuppressWarnings("unchecked")
protected <T> Array<Array<T>> transpose(Seq<? extends Seq<T>> rows) {
return Array.transpose((Array<Array<T>>) rows);
}
@Override
protected int getPeekNonNilPerformingAnAction() {
return 1;
}
@Override
protected boolean useIsEqualToInsteadOfIsSameAs() {
return false;
}
// -- static narrow
@Test
public void shouldNarrowArray() {
final Array<Double> doubles = of(1.0d);
final Array<Number> numbers = Array.narrow(doubles);
final int actual = numbers.append(new BigDecimal("2.0")).sum().intValue();
assertThat(actual).isEqualTo(3);
}
// -- transform()
@Test
public void shouldTransform() {
String transformed = of(42).transform(v -> String.valueOf(v.get()));
assertThat(transformed).isEqualTo("42");
}
// -- unfold
@Test
public void shouldUnfoldRightToEmpty() {
assertThat(Array.unfoldRight(0, x -> Option.none())).isEqualTo(empty());
}
@Test
public void shouldUnfoldRightSimpleArray() {
assertThat(
Array.unfoldRight(10, x -> x == 0
? Option.none()
: Option.of(new Tuple2<>(x, x - 1))))
.isEqualTo(of(10, 9, 8, 7, 6, 5, 4, 3, 2, 1));
}
@Test
public void shouldUnfoldLeftToEmpty() {
assertThat(Array.unfoldLeft(0, x -> Option.none())).isEqualTo(empty());
}
@Test
public void shouldUnfoldLeftSimpleArray() {
assertThat(
Array.unfoldLeft(10, x -> x == 0
? Option.none()
: Option.of(new Tuple2<>(x - 1, x))))
.isEqualTo(of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
}
@Test
public void shouldUnfoldToEmpty() {
assertThat(Array.unfold(0, x -> Option.none())).isEqualTo(empty());
}
@Test
public void shouldUnfoldSimpleArray() {
assertThat(
Array.unfold(10, x -> x == 0
? Option.none()
: Option.of(new Tuple2<>(x - 1, x))))
.isEqualTo(of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
}
// -- toString
@Test
public void shouldStringifyNil() {
assertThat(empty().toString()).isEqualTo("Array()");
}
@Test
public void shouldStringifyNonNil() {
assertThat(of(1, 2, 3).toString()).isEqualTo("Array(1, 2, 3)");
}
// -- toArray
@Test
public void shouldReturnSelfOnConvertToArray() {
Value<Integer> value = of(1, 2, 3);
assertThat(value.toArray()).isSameAs(value);
}
}