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/*
* 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
*
* http://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;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertNotSame;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import org.junit.jupiter.api.Test;
/**
* Tests ArrayUtils insert methods.
*/
public class ArrayUtilsInsertTest extends AbstractLangTest {
@Test
public void testInsertBooleans() {
final boolean[] array = {true, false, true};
final boolean[] values = {false, true, false};
final boolean[] result = ArrayUtils.insert(42, array, null);
assertArrayEquals(array, result);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new boolean[0], ArrayUtils.insert(0, new boolean[0], null));
assertNull(ArrayUtils.insert(42, (boolean[]) null, null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new boolean[]{false, true, false, true}, ArrayUtils.insert(0, array, false));
assertArrayEquals(new boolean[]{true, false, false, true}, ArrayUtils.insert(1, array, false));
assertArrayEquals(new boolean[]{true, false, true, false}, ArrayUtils.insert(array.length, array, false));
assertArrayEquals(new boolean[]{false, true, false, true, false, true}, ArrayUtils.insert(0, array, values));
assertArrayEquals(new boolean[]{true, false, true, false, false, true}, ArrayUtils.insert(1, array, values));
assertArrayEquals(new boolean[]{true, false, true, false, true, false}, ArrayUtils.insert(array.length, array, values));
}
@Test
public void testInsertBytes() {
final byte[] array = {1, 2, 3};
final byte[] values = {4, 5, 6};
final byte[] result = ArrayUtils.insert(42, array, null);
assertArrayEquals(array, result);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new byte[0], ArrayUtils.insert(0, new byte[0], null));
assertNull(ArrayUtils.insert(42, (byte[]) null, null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new byte[]{0, 1, 2, 3}, ArrayUtils.insert(0, array, (byte) 0));
assertArrayEquals(new byte[]{1, 0, 2, 3}, ArrayUtils.insert(1, array, (byte) 0));
assertArrayEquals(new byte[]{1, 2, 3, 0}, ArrayUtils.insert(array.length, array, (byte) 0));
assertArrayEquals(new byte[]{4, 5, 6, 1, 2, 3}, ArrayUtils.insert(0, array, values));
assertArrayEquals(new byte[]{1, 4, 5, 6, 2, 3}, ArrayUtils.insert(1, array, values));
assertArrayEquals(new byte[]{1, 2, 3, 4, 5, 6}, ArrayUtils.insert(array.length, array, values));
}
@Test
public void testInsertChars() {
final char[] array = {'a', 'b', 'c'};
final char[] values = {'d', 'e', 'f'};
final char[] result = ArrayUtils.insert(42, array, null);
assertArrayEquals(array, result);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new char[0], ArrayUtils.insert(0, new char[0], null));
assertNull(ArrayUtils.insert(42, (char[]) null, null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new char[]{'z', 'a', 'b', 'c'}, ArrayUtils.insert(0, array, 'z'));
assertArrayEquals(new char[]{'a', 'z', 'b', 'c'}, ArrayUtils.insert(1, array, 'z'));
assertArrayEquals(new char[]{'a', 'b', 'c', 'z'}, ArrayUtils.insert(array.length, array, 'z'));
assertArrayEquals(new char[]{'d', 'e', 'f', 'a', 'b', 'c'}, ArrayUtils.insert(0, array, values));
assertArrayEquals(new char[]{'a', 'd', 'e', 'f', 'b', 'c'}, ArrayUtils.insert(1, array, values));
assertArrayEquals(new char[]{'a', 'b', 'c', 'd', 'e', 'f'}, ArrayUtils.insert(array.length, array, values));
}
@Test
public void testInsertDoubles() {
final double[] array = {1, 2, 3};
final double[] values = {4, 5, 6};
final double delta = 0.000001;
final double[] result = ArrayUtils.insert(42, array, null);
assertArrayEquals(array, result, delta);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new double[0], ArrayUtils.insert(0, new double[0], null), delta);
assertNull(ArrayUtils.insert(42, (double[]) null, null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new double[]{0, 1, 2, 3}, ArrayUtils.insert(0, array, 0), delta);
assertArrayEquals(new double[]{1, 0, 2, 3}, ArrayUtils.insert(1, array, 0), delta);
assertArrayEquals(new double[]{1, 2, 3, 0}, ArrayUtils.insert(array.length, array, 0), delta);
assertArrayEquals(new double[]{4, 5, 6, 1, 2, 3}, ArrayUtils.insert(0, array, values), delta);
assertArrayEquals(new double[]{1, 4, 5, 6, 2, 3}, ArrayUtils.insert(1, array, values), delta);
assertArrayEquals(new double[]{1, 2, 3, 4, 5, 6}, ArrayUtils.insert(array.length, array, values), delta);
}
@Test
public void testInsertFloats() {
final float[] array = {1, 2, 3};
final float[] values = {4, 5, 6};
final float delta = 0.000001f;
final float[] result = ArrayUtils.insert(42, array, null);
assertArrayEquals(array, result, delta);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new float[0], ArrayUtils.insert(0, new float[0], null), delta);
assertNull(ArrayUtils.insert(42, (float[]) null, null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new float[]{0, 1, 2, 3}, ArrayUtils.insert(0, array, 0), delta);
assertArrayEquals(new float[]{1, 0, 2, 3}, ArrayUtils.insert(1, array, 0), delta);
assertArrayEquals(new float[]{1, 2, 3, 0}, ArrayUtils.insert(array.length, array, 0), delta);
assertArrayEquals(new float[]{4, 5, 6, 1, 2, 3}, ArrayUtils.insert(0, array, values), delta);
assertArrayEquals(new float[]{1, 4, 5, 6, 2, 3}, ArrayUtils.insert(1, array, values), delta);
assertArrayEquals(new float[]{1, 2, 3, 4, 5, 6}, ArrayUtils.insert(array.length, array, values), delta);
}
@Test
public void testInsertGenericArray() {
final String[] array = {"a", "b", "c"};
final String[] values = {"d", "e", "f"};
final String[] result = ArrayUtils.insert(42, array, (String[]) null);
assertArrayEquals(array, result);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new String[0], ArrayUtils.insert(0, new String[0], (String[]) null));
assertNull(ArrayUtils.insert(42, null, (String[]) null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new String[]{"z", "a", "b", "c"}, ArrayUtils.insert(0, array, "z"));
assertArrayEquals(new String[]{"a", "z", "b", "c"}, ArrayUtils.insert(1, array, "z"));
assertArrayEquals(new String[]{"a", "b", "c", "z"}, ArrayUtils.insert(array.length, array, "z"));
assertArrayEquals(new String[]{"d", "e", "f", "a", "b", "c"}, ArrayUtils.insert(0, array, values));
assertArrayEquals(new String[]{"a", "d", "e", "f", "b", "c"}, ArrayUtils.insert(1, array, values));
assertArrayEquals(new String[]{"a", "b", "c", "d", "e", "f"}, ArrayUtils.insert(array.length, array, values));
}
@Test
public void testInsertInts() {
final int[] array = {1, 2, 3};
final int[] values = {4, 5, 6};
final int[] result = ArrayUtils.insert(42, array, null);
assertArrayEquals(array, result);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new int[0], ArrayUtils.insert(0, new int[0], null));
assertNull(ArrayUtils.insert(42, (int[]) null, null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new int[]{0, 1, 2, 3}, ArrayUtils.insert(0, array, 0));
assertArrayEquals(new int[]{1, 0, 2, 3}, ArrayUtils.insert(1, array, 0));
assertArrayEquals(new int[]{1, 2, 3, 0}, ArrayUtils.insert(array.length, array, 0));
assertArrayEquals(new int[]{4, 5, 6, 1, 2, 3}, ArrayUtils.insert(0, array, values));
assertArrayEquals(new int[]{1, 4, 5, 6, 2, 3}, ArrayUtils.insert(1, array, values));
assertArrayEquals(new int[]{1, 2, 3, 4, 5, 6}, ArrayUtils.insert(array.length, array, values));
}
@Test
public void testInsertLongs() {
final long[] array = {1, 2, 3};
final long[] values = {4, 5, 6};
final long[] result = ArrayUtils.insert(42, array, null);
assertArrayEquals(array, result);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new long[0], ArrayUtils.insert(0, new long[0], null));
assertNull(ArrayUtils.insert(42, (long[]) null, null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new long[]{0, 1, 2, 3}, ArrayUtils.insert(0, array, 0));
assertArrayEquals(new long[]{1, 0, 2, 3}, ArrayUtils.insert(1, array, 0));
assertArrayEquals(new long[]{1, 2, 3, 0}, ArrayUtils.insert(array.length, array, 0));
assertArrayEquals(new long[]{4, 5, 6, 1, 2, 3}, ArrayUtils.insert(0, array, values));
assertArrayEquals(new long[]{1, 4, 5, 6, 2, 3}, ArrayUtils.insert(1, array, values));
assertArrayEquals(new long[]{1, 2, 3, 4, 5, 6}, ArrayUtils.insert(array.length, array, values));
}
@Test
public void testInsertShorts() {
final short[] array = {1, 2, 3};
final short[] values = {4, 5, 6};
final short[] result = ArrayUtils.insert(42, array, null);
assertArrayEquals(array, result);
assertNotSame(array, result);
assertNull(ArrayUtils.insert(42, null, array));
assertArrayEquals(new short[0], ArrayUtils.insert(0, new short[0], null));
assertNull(ArrayUtils.insert(42, (short[]) null, null));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(-1, array, array));
assertThrows(IndexOutOfBoundsException.class, () -> ArrayUtils.insert(array.length + 1, array, array));
assertArrayEquals(new short[]{0, 1, 2, 3}, ArrayUtils.insert(0, array, (short) 0));
assertArrayEquals(new short[]{1, 0, 2, 3}, ArrayUtils.insert(1, array, (short) 0));
assertArrayEquals(new short[]{1, 2, 3, 0}, ArrayUtils.insert(array.length, array, (short) 0));
assertArrayEquals(new short[]{4, 5, 6, 1, 2, 3}, ArrayUtils.insert(0, array, values));
assertArrayEquals(new short[]{1, 4, 5, 6, 2, 3}, ArrayUtils.insert(1, array, values));
assertArrayEquals(new short[]{1, 2, 3, 4, 5, 6}, ArrayUtils.insert(array.length, array, values));
}
}
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