| /* |
| * 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.lang.mutable; |
| |
| import junit.framework.TestCase; |
| |
| /** |
| * JUnit tests. |
| * |
| * @version $Id$ |
| * @see MutableDouble |
| */ |
| public class MutableDoubleTest extends TestCase { |
| |
| public MutableDoubleTest(String testName) { |
| super(testName); |
| } |
| |
| // ---------------------------------------------------------------- |
| public void testConstructors() { |
| assertEquals(0d, new MutableDouble().doubleValue(), 0.0001d); |
| |
| assertEquals(1d, new MutableDouble(1d).doubleValue(), 0.0001d); |
| |
| assertEquals(2d, new MutableDouble(new Double(2d)).doubleValue(), 0.0001d); |
| assertEquals(3d, new MutableDouble(new MutableDouble(3d)).doubleValue(), 0.0001d); |
| |
| assertEquals(2d, new MutableDouble("2.0").doubleValue(), 0.0001d); |
| |
| try { |
| new MutableDouble((Number)null); |
| fail(); |
| } catch (NullPointerException ex) {} |
| } |
| |
| public void testGetSet() { |
| final MutableDouble mutNum = new MutableDouble(0d); |
| assertEquals(0d, new MutableDouble().doubleValue(), 0.0001d); |
| assertEquals(new Double(0), new MutableDouble().getValue()); |
| |
| mutNum.setValue(1); |
| assertEquals(1d, mutNum.doubleValue(), 0.0001d); |
| assertEquals(new Double(1d), mutNum.getValue()); |
| |
| mutNum.setValue(new Double(2d)); |
| assertEquals(2d, mutNum.doubleValue(), 0.0001d); |
| assertEquals(new Double(2d), mutNum.getValue()); |
| |
| mutNum.setValue(new MutableDouble(3d)); |
| assertEquals(3d, mutNum.doubleValue(), 0.0001d); |
| assertEquals(new Double(3d), mutNum.getValue()); |
| try { |
| mutNum.setValue(null); |
| fail(); |
| } catch (NullPointerException ex) {} |
| try { |
| mutNum.setValue("0"); |
| fail(); |
| } catch (ClassCastException ex) {} |
| } |
| |
| public void testNanInfinite() { |
| MutableDouble mutNum = new MutableDouble(Double.NaN); |
| assertEquals(true, mutNum.isNaN()); |
| |
| mutNum = new MutableDouble(Double.POSITIVE_INFINITY); |
| assertEquals(true, mutNum.isInfinite()); |
| |
| mutNum = new MutableDouble(Double.NEGATIVE_INFINITY); |
| assertEquals(true, mutNum.isInfinite()); |
| } |
| |
| public void testEquals() { |
| final MutableDouble mutNumA = new MutableDouble(0d); |
| final MutableDouble mutNumB = new MutableDouble(0d); |
| final MutableDouble mutNumC = new MutableDouble(1d); |
| |
| assertEquals(true, mutNumA.equals(mutNumA)); |
| assertEquals(true, mutNumA.equals(mutNumB)); |
| assertEquals(true, mutNumB.equals(mutNumA)); |
| assertEquals(true, mutNumB.equals(mutNumB)); |
| assertEquals(false, mutNumA.equals(mutNumC)); |
| assertEquals(false, mutNumB.equals(mutNumC)); |
| assertEquals(true, mutNumC.equals(mutNumC)); |
| assertEquals(false, mutNumA.equals(null)); |
| assertEquals(false, mutNumA.equals(new Double(0d))); |
| assertEquals(false, mutNumA.equals("0")); |
| } |
| |
| public void testHashCode() { |
| final MutableDouble mutNumA = new MutableDouble(0d); |
| final MutableDouble mutNumB = new MutableDouble(0d); |
| final MutableDouble mutNumC = new MutableDouble(1d); |
| |
| assertEquals(true, mutNumA.hashCode() == mutNumA.hashCode()); |
| assertEquals(true, mutNumA.hashCode() == mutNumB.hashCode()); |
| assertEquals(false, mutNumA.hashCode() == mutNumC.hashCode()); |
| assertEquals(true, mutNumA.hashCode() == new Double(0d).hashCode()); |
| } |
| |
| public void testCompareTo() { |
| final MutableDouble mutNum = new MutableDouble(0d); |
| |
| assertEquals(0, mutNum.compareTo(new MutableDouble(0d))); |
| assertEquals(+1, mutNum.compareTo(new MutableDouble(-1d))); |
| assertEquals(-1, mutNum.compareTo(new MutableDouble(1d))); |
| try { |
| mutNum.compareTo(null); |
| fail(); |
| } catch (NullPointerException ex) {} |
| try { |
| mutNum.compareTo(new Double(0d)); |
| fail(); |
| } catch (ClassCastException ex) {} |
| try { |
| mutNum.compareTo("0"); |
| fail(); |
| } catch (ClassCastException ex) {} |
| } |
| |
| public void testPrimitiveValues() { |
| MutableDouble mutNum = new MutableDouble(1.7); |
| |
| assertEquals( 1.7F, mutNum.floatValue(), 0 ); |
| assertEquals( 1.7, mutNum.doubleValue(), 0 ); |
| assertEquals( (byte) 1, mutNum.byteValue() ); |
| assertEquals( (short) 1, mutNum.shortValue() ); |
| assertEquals( 1, mutNum.intValue() ); |
| assertEquals( 1L, mutNum.longValue() ); |
| } |
| |
| public void testToDouble() { |
| assertEquals(new Double(0d), new MutableDouble(0d).toDouble()); |
| assertEquals(new Double(12.3d), new MutableDouble(12.3d).toDouble()); |
| } |
| |
| public void testIncrement() { |
| MutableDouble mutNum = new MutableDouble(1); |
| mutNum.increment(); |
| |
| assertEquals(2, mutNum.intValue()); |
| assertEquals(2L, mutNum.longValue()); |
| } |
| |
| public void testDecrement() { |
| MutableDouble mutNum = new MutableDouble(1); |
| mutNum.decrement(); |
| |
| assertEquals(0, mutNum.intValue()); |
| assertEquals(0L, mutNum.longValue()); |
| } |
| |
| public void testAddValuePrimitive() { |
| MutableDouble mutNum = new MutableDouble(1); |
| mutNum.add(1.1d); |
| |
| assertEquals(2.1d, mutNum.doubleValue(), 0.01d); |
| } |
| |
| public void testAddValueObject() { |
| MutableDouble mutNum = new MutableDouble(1); |
| mutNum.add(new Double(1.1d)); |
| |
| assertEquals(2.1d, mutNum.doubleValue(), 0.01d); |
| } |
| |
| public void testSubtractValuePrimitive() { |
| MutableDouble mutNum = new MutableDouble(1); |
| mutNum.subtract(0.9d); |
| |
| assertEquals(0.1d, mutNum.doubleValue(), 0.01d); |
| } |
| |
| public void testSubtractValueObject() { |
| MutableDouble mutNum = new MutableDouble(1); |
| mutNum.subtract(new Double(0.9d)); |
| |
| assertEquals(0.1d, mutNum.doubleValue(), 0.01d); |
| } |
| |
| public void testToString() { |
| assertEquals("0.0", new MutableDouble(0d).toString()); |
| assertEquals("10.0", new MutableDouble(10d).toString()); |
| assertEquals("-123.0", new MutableDouble(-123d).toString()); |
| } |
| |
| } |