| /* ==================================================================== |
| 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.poi.util; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertThrows; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * Test IntegerField code |
| */ |
| final class TestIntegerField { |
| |
| private static final int[] _test_array = {Integer.MIN_VALUE, -1, 0, 1, Integer.MAX_VALUE}; |
| |
| @Test |
| void testConstructors() { |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> new IntegerField(-1)); |
| IntegerField field = new IntegerField(2); |
| |
| assertEquals(0, field.get()); |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> new IntegerField(-1, 1)); |
| field = new IntegerField(2, 0x12345678); |
| assertEquals(0x12345678, field.get()); |
| |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> new IntegerField(-1, 1, new byte[ 6 ])); |
| |
| byte[] array = new byte[ 6 ]; |
| field = new IntegerField(2, 0x12345678, array); |
| assertEquals(0x12345678, field.get()); |
| assertEquals(( byte ) 0x78, array[ 2 ]); |
| assertEquals(( byte ) 0x56, array[ 3 ]); |
| assertEquals(( byte ) 0x34, array[ 4 ]); |
| assertEquals(( byte ) 0x12, array[ 5 ]); |
| |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> new IntegerField(2, 5, new byte[ 5 ])); |
| |
| for (int element : _test_array) { |
| array = new byte[ 4 ]; |
| new IntegerField(0, element, array); |
| assertEquals(element, new IntegerField(0, array).get()); |
| } |
| } |
| |
| @Test |
| void testSet() { |
| IntegerField field = new IntegerField(0); |
| byte[] array = new byte[ 4 ]; |
| |
| for (int j = 0; j < _test_array.length; j++) { |
| field.set(_test_array[ j ]); |
| assertEquals(_test_array[ j ], field.get(), "testing _1 " + j); |
| field = new IntegerField(0); |
| field.set(_test_array[ j ], array); |
| assertEquals(_test_array[ j ], field.get(), "testing _2 "); |
| assertEquals(( byte ) (_test_array[ j ] % 256), array[ 0 ], "testing _3.0 " + _test_array[ j ]); |
| assertEquals(( byte ) ((_test_array[ j ] >> 8) % 256), array[ 1 ], "testing _3.1 " + _test_array[ j ]); |
| assertEquals(( byte ) ((_test_array[ j ] >> 16) % 256), array[ 2 ], "testing _3.2 " + _test_array[ j ]); |
| assertEquals(( byte ) ((_test_array[ j ] >> 24) % 256), array[ 3 ], "testing _3.3 " + _test_array[ j ]); |
| } |
| } |
| |
| @Test |
| void testReadFromBytes() { |
| IntegerField field1 = new IntegerField(1); |
| byte[] array = new byte[ 4 ]; |
| |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> field1.readFromBytes(array)); |
| IntegerField field2 = new IntegerField(0); |
| for (int j = 0; j < _test_array.length; j++) { |
| array[ 0 ] = ( byte ) (_test_array[ j ] % 256); |
| array[ 1 ] = ( byte ) ((_test_array[ j ] >> 8) % 256); |
| array[ 2 ] = ( byte ) ((_test_array[ j ] >> 16) % 256); |
| array[ 3 ] = ( byte ) ((_test_array[ j ] >> 24) % 256); |
| field2.readFromBytes(array); |
| assertEquals(_test_array[ j ], field2.get(), "testing " + j); |
| } |
| } |
| |
| @Test |
| void testReadFromStream() throws IOException { |
| IntegerField field = new IntegerField(0); |
| byte[] buffer = new byte[ _test_array.length * 4 ]; |
| |
| for (int j = 0; j < _test_array.length; j++) { |
| buffer[ (j * 4) + 0 ] = ( byte ) (_test_array[ j ] % 256); |
| buffer[ (j * 4) + 1 ] = ( byte ) ((_test_array[ j ] >> 8) % 256); |
| buffer[ (j * 4) + 2 ] = ( byte ) ((_test_array[ j ] >> 16) % 256); |
| buffer[ (j * 4) + 3 ] = ( byte ) ((_test_array[ j ] >> 24) % 256); |
| } |
| ByteArrayInputStream stream = new ByteArrayInputStream(buffer); |
| |
| for (int j = 0; j < buffer.length / 4; j++) { |
| field.readFromStream(stream); |
| assertEquals(_test_array[ j ], field.get(), "Testing " + j); |
| } |
| } |
| |
| @Test |
| void testWriteToBytes() { |
| IntegerField field = new IntegerField(0); |
| byte[] array = new byte[ 4 ]; |
| |
| for (int b : _test_array) { |
| field.set(b); |
| field.writeToBytes(array); |
| int val = array[ 3 ] << 24; |
| |
| val &= 0xFF000000; |
| val += (array[ 2 ] << 16) & 0x00FF0000; |
| val += (array[ 1 ] << 8) & 0x0000FF00; |
| val += (array[ 0 ] & 0x000000FF); |
| assertEquals(b, val, "testing "); |
| } |
| } |
| } |