1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 /** 18 * @author Elena Semukhina 19 * @version $Revision$ 20 */ 21 22 package libcore.java.math; 23 24 import java.math.BigDecimal; 25 import junit.framework.TestCase; 26 27 public class OldBigDecimalScaleOperationsTest extends TestCase { 28 29 public void testMovePointRightEx() { 30 BigDecimal a = new BigDecimal("12345.6789012345678901234567890123456789"); 31 BigDecimal res = a.movePointRight(10); 32 assertEquals("incorrect scale", 24, res.scale()); 33 assertEquals("incorrect value", "123456789012345.678901234567890123456789", res.toString()); 34 res = a.movePointRight(-50); 35 assertEquals("incorrect scale", 84, res.scale()); 36 assertEquals("incorrect value", "1.23456789012345678901234567890123456789E-46", res.toString()); 37 try { 38 a.movePointRight(Integer.MIN_VALUE + 2); 39 fail("ArithmeticException is not thrown"); 40 } catch (ArithmeticException expected) { 41 } 42 } 43 44 // Throws OutOfMemoryError instead of ArithmeticException! 45 public void testMovePointRightEx2() { 46 BigDecimal a = new BigDecimal("123456789012345678901234567890123456789E25"); 47 try { 48 a.movePointRight(Integer.MAX_VALUE - 2); 49 fail("ArithmeticException is not thrown"); 50 } catch (ArithmeticException expected) { 51 } 52 } 53 54 public void testScaleByPowerOfTenEx() { 55 BigDecimal a = new BigDecimal("12345.6789012345678901234567890123456789"); 56 BigDecimal res = a.movePointRight(10); 57 assertEquals("incorrect scale", 24, res.scale()); 58 assertEquals("incorrect value", "123456789012345.678901234567890123456789", res.toString()); 59 res = a.scaleByPowerOfTen(-50); 60 assertEquals("incorrect scale", 84, res.scale()); 61 assertEquals("incorrect value", "1.23456789012345678901234567890123456789E-46", res.toString()); 62 res = a.scaleByPowerOfTen(50); 63 assertEquals("incorrect scale", -16, res.scale()); 64 assertEquals("incorrect value", "1.23456789012345678901234567890123456789E+54", res.toString()); 65 try { 66 a.scaleByPowerOfTen(Integer.MIN_VALUE + 2); 67 fail("ArithmeticException is not thrown"); 68 } catch (ArithmeticException expected) { 69 } 70 a = new BigDecimal("123456789012345678901234567890123456789E25"); 71 try { 72 a.scaleByPowerOfTen(Integer.MAX_VALUE - 2); 73 fail("ArithmeticException is not thrown"); 74 } catch (ArithmeticException expected) { 75 } 76 } 77 78 /** 79 * check that setScale with a scale greater to the existing scale does not 80 * change the value. 81 */ 82 public void testSetScale() { 83 BigDecimal x1 = new BigDecimal(1.23400); 84 BigDecimal x2 = x1.setScale(75); 85 86 assertEquals(0, x1.compareTo(x2)); 87 assertEquals(0, x2.compareTo(x1)); 88 89 x1.precision(); 90 91 assertEquals(0, x1.compareTo(x2)); 92 assertEquals(0, x2.compareTo(x1)); 93 94 x2.precision(); 95 96 assertEquals(0, x1.compareTo(x2)); 97 assertEquals(0, x2.compareTo(x1)); 98 } 99 } 100
