IntStreamsTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.lang3.stream;

import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;

import org.apache.commons.lang3.AbstractLangTest;
import org.junit.jupiter.api.Test;

/**
 * Tests {@link IntStreams}.
 */
class IntStreamsTest extends AbstractLangTest {

    @SuppressWarnings("deprecation")
    @Test
    void testDeprecatedConstructor() {
        assertNotNull(new IntStreams().toString());
    }

    @Test
    void testOfArray() {
        assertEquals(0, IntStreams.of((int[]) null).count());
        assertEquals(1, IntStreams.of(1).count());
        assertEquals(2, IntStreams.of(1, 2).count());
    }

    @Test
    void testRange() {
        assertArrayEquals(new int[] { 0, 1 }, IntStreams.range(2).toArray());
    }

    @Test
    void testRangeClosed() {
        assertArrayEquals(new int[] { 0, 1, 2 }, IntStreams.rangeClosed(2).toArray());
    }
}