| /* ==================================================================== |
| 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 static org.junit.jupiter.api.Assertions.fail; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * Test LongField code |
| */ |
| final class TestLongField { |
| |
| static private final long[] _test_array = |
| { |
| Long.MIN_VALUE, -1L, 0L, 1L, Long.MAX_VALUE |
| }; |
| |
| @Test |
| void testConstructors() { |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> new LongField(-1)); |
| |
| LongField field1 = new LongField(2); |
| assertEquals(0L, field1.get()); |
| |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> new LongField(-1, 1L)); |
| |
| LongField field2 = new LongField(2, 0x123456789ABCDEF0L); |
| assertEquals(0x123456789ABCDEF0L, field2.get()); |
| |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> new LongField(-1, 1L, new byte[ 10 ])); |
| |
| |
| byte[] array = new byte[ 10 ]; |
| LongField field = new LongField(2, 0x123456789ABCDEF0L, array); |
| assertEquals(0x123456789ABCDEF0L, field.get()); |
| assertEquals(( byte ) 0xF0, array[ 2 ]); |
| assertEquals(( byte ) 0xDE, array[ 3 ]); |
| assertEquals(( byte ) 0xBC, array[ 4 ]); |
| assertEquals(( byte ) 0x9A, array[ 5 ]); |
| assertEquals(( byte ) 0x78, array[ 6 ]); |
| assertEquals(( byte ) 0x56, array[ 7 ]); |
| assertEquals(( byte ) 0x34, array[ 8 ]); |
| assertEquals(( byte ) 0x12, array[ 9 ]); |
| |
| assertThrows(ArrayIndexOutOfBoundsException.class, () -> new LongField(2, 5L, new byte[ 9 ])); |
| |
| for (long element : _test_array) { |
| array = new byte[ 8 ]; |
| new LongField(0, element, array); |
| assertEquals(element, new LongField(0, array).get()); |
| } |
| } |
| |
| @Test |
| void testSet() { |
| LongField field = new LongField(0); |
| byte[] array = new byte[ 8 ]; |
| |
| 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 LongField(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 ]); |
| assertEquals(( byte ) ((_test_array[ j ] >> 32) % 256), array[ 4 ], "testing _3.4 " + _test_array[ j ]); |
| assertEquals(( byte ) ((_test_array[ j ] >> 40) % 256), array[ 5 ], "testing _3.5 " + _test_array[ j ]); |
| assertEquals(( byte ) ((_test_array[ j ] >> 48) % 256), array[ 6 ], "testing _3.6 " + _test_array[ j ]); |
| assertEquals(( byte ) ((_test_array[ j ] >> 56) % 256), array[ 7 ], "testing _3.7 " + _test_array[ j ]); |
| } |
| } |
| |
| @Test |
| void testReadFromBytes() { |
| LongField field = new LongField(1); |
| byte[] array = new byte[ 8 ]; |
| |
| try { |
| field.readFromBytes(array); |
| fail("should have caught ArrayIndexOutOfBoundsException"); |
| } catch (ArrayIndexOutOfBoundsException ignored_e) { |
| // as expected |
| } |
| field = new LongField(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); |
| array[ 4 ] = ( byte ) ((_test_array[ j ] >> 32) % 256); |
| array[ 5 ] = ( byte ) ((_test_array[ j ] >> 40) % 256); |
| array[ 6 ] = ( byte ) ((_test_array[ j ] >> 48) % 256); |
| array[ 7 ] = ( byte ) ((_test_array[ j ] >> 56) % 256); |
| field.readFromBytes(array); |
| assertEquals(_test_array[ j ], field.get(), "testing " + j); |
| } |
| } |
| |
| @Test |
| void testReadFromStream() throws IOException { |
| LongField field = new LongField(0); |
| byte[] buffer = new byte[ _test_array.length * 8 ]; |
| |
| for (int j = 0; j < _test_array.length; j++) { |
| buffer[ (j * 8) ] = ( byte ) ((_test_array[ j ] ) % 256); |
| buffer[ (j * 8) + 1 ] = ( byte ) ((_test_array[ j ] >> 8) % 256); |
| buffer[ (j * 8) + 2 ] = ( byte ) ((_test_array[ j ] >> 16) % 256); |
| buffer[ (j * 8) + 3 ] = ( byte ) ((_test_array[ j ] >> 24) % 256); |
| buffer[ (j * 8) + 4 ] = ( byte ) ((_test_array[ j ] >> 32) % 256); |
| buffer[ (j * 8) + 5 ] = ( byte ) ((_test_array[ j ] >> 40) % 256); |
| buffer[ (j * 8) + 6 ] = ( byte ) ((_test_array[ j ] >> 48) % 256); |
| buffer[ (j * 8) + 7 ] = ( byte ) ((_test_array[ j ] >> 56) % 256); |
| } |
| ByteArrayInputStream stream = new ByteArrayInputStream(buffer); |
| |
| for (int j = 0; j < buffer.length / 8; j++) { |
| field.readFromStream(stream); |
| assertEquals(_test_array[ j ], field.get(), "Testing " + j); |
| } |
| } |
| |
| @Test |
| void testWriteToBytes() { |
| LongField field = new LongField(0); |
| byte[] array = new byte[ 8 ]; |
| |
| for (long element : _test_array) { |
| field.set(element); |
| field.writeToBytes(array); |
| long val = (( long ) array[ 7 ]) << 56; |
| |
| val &= 0xFF00000000000000L; |
| val += ((( long ) array[ 6 ]) << 48) & 0x00FF000000000000L; |
| val += ((( long ) array[ 5 ]) << 40) & 0x0000FF0000000000L; |
| val += ((( long ) array[ 4 ]) << 32) & 0x000000FF00000000L; |
| val += ((( long ) array[ 3 ]) << 24) & 0x00000000FF000000L; |
| val += ((( long ) array[ 2 ]) << 16) & 0x0000000000FF0000L; |
| val += ((( long ) array[ 1 ]) << 8) & 0x000000000000FF00L; |
| val += (array[ 0 ] & 0x00000000000000FFL); |
| assertEquals(element, val, "testing "); |
| } |
| } |
| } |