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Java example source code file (TestPreciseDurationField.java)

This example Java source code file (TestPreciseDurationField.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arithmeticexception, bytearrayinputstream, bytearrayoutputstream, durationfield, exception, illegalargumentexception, long_integer_max, long_max, nullpointerexception, objectinputstream, objectoutputstream, testcase, testprecisedurationfield, testsuite

The TestPreciseDurationField.java Java example source code

/*
 *  Copyright 2001-2009 Stephen Colebourne
 *
 *  Licensed 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.joda.time.field;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.joda.time.DurationField;
import org.joda.time.DurationFieldType;
import org.joda.time.chrono.ISOChronology;

/**
 * This class is a Junit unit test for PreciseDurationField.
 *
 * @author Stephen Colebourne
 */
public class TestPreciseDurationField extends TestCase {
    
    private static final long LONG_INTEGER_MAX = Integer.MAX_VALUE;
    private static final int INTEGER_MAX = Integer.MAX_VALUE;
    private static final long LONG_MAX = Long.MAX_VALUE;
    
    private PreciseDurationField iField;

    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }

    public static TestSuite suite() {
        return new TestSuite(TestPreciseDurationField.class);
    }

    public TestPreciseDurationField(String name) {
        super(name);
    }

    protected void setUp() throws Exception {
        iField = new PreciseDurationField(DurationFieldType.seconds(), 1000);
    }

    protected void tearDown() throws Exception {
        iField = null;
    }

    //-----------------------------------------------------------------------
    public void test_constructor() {
        try {
            new PreciseDurationField(null, 10);
            fail();
        } catch (IllegalArgumentException ex) {}
    }

    //-----------------------------------------------------------------------
    public void test_getType() {
        assertEquals(DurationFieldType.seconds(), iField.getType());
    }

    public void test_getName() {
        assertEquals("seconds", iField.getName());
    }
    
    public void test_isSupported() {
        assertEquals(true, iField.isSupported());
    }

    public void test_isPrecise() {
        assertEquals(true, iField.isPrecise());
    }

    public void test_getUnitMillis() {
        assertEquals(1000, iField.getUnitMillis());
    }

    public void test_toString() {
        assertEquals("DurationField[seconds]", iField.toString());
    }

    //-----------------------------------------------------------------------
    public void test_getValue_long() {
        assertEquals(0, iField.getValue(0L));
        assertEquals(12345, iField.getValue(12345678L));
        assertEquals(-1, iField.getValue(-1234L));
        assertEquals(INTEGER_MAX, iField.getValue(LONG_INTEGER_MAX * 1000L + 999L));
        try {
            iField.getValue(LONG_INTEGER_MAX * 1000L + 1000L);
            fail();
        } catch (ArithmeticException ex) {}
    }

    public void test_getValueAsLong_long() {
        assertEquals(0L, iField.getValueAsLong(0L));
        assertEquals(12345L, iField.getValueAsLong(12345678L));
        assertEquals(-1L, iField.getValueAsLong(-1234L));
        assertEquals(LONG_INTEGER_MAX + 1L, iField.getValueAsLong(LONG_INTEGER_MAX * 1000L + 1000L));
    }

    public void test_getValue_long_long() {
        assertEquals(0, iField.getValue(0L, 567L));
        assertEquals(12345, iField.getValue(12345678L, 567L));
        assertEquals(-1, iField.getValue(-1234L, 567L));
        assertEquals(INTEGER_MAX, iField.getValue(LONG_INTEGER_MAX * 1000L + 999L, 567L));
        try {
            iField.getValue(LONG_INTEGER_MAX * 1000L + 1000L, 567L);
            fail();
        } catch (ArithmeticException ex) {}
    }

    public void test_getValueAsLong_long_long() {
        assertEquals(0L, iField.getValueAsLong(0L, 567L));
        assertEquals(12345L, iField.getValueAsLong(12345678L, 567L));
        assertEquals(-1L, iField.getValueAsLong(-1234L, 567L));
        assertEquals(LONG_INTEGER_MAX + 1L, iField.getValueAsLong(LONG_INTEGER_MAX * 1000L + 1000L, 567L));
    }

    //-----------------------------------------------------------------------
    public void test_getMillis_int() {
        assertEquals(0, iField.getMillis(0));
        assertEquals(1234000L, iField.getMillis(1234));
        assertEquals(-1234000L, iField.getMillis(-1234));
        assertEquals(LONG_INTEGER_MAX * 1000L, iField.getMillis(INTEGER_MAX));
    }

    public void test_getMillis_long() {
        assertEquals(0L, iField.getMillis(0L));
        assertEquals(1234000L, iField.getMillis(1234L));
        assertEquals(-1234000L, iField.getMillis(-1234L));
        try {
            iField.getMillis(LONG_MAX);
            fail();
        } catch (ArithmeticException ex) {}
    }

    public void test_getMillis_int_long() {
        assertEquals(0L, iField.getMillis(0, 567L));
        assertEquals(1234000L, iField.getMillis(1234, 567L));
        assertEquals(-1234000L, iField.getMillis(-1234, 567L));
        assertEquals(LONG_INTEGER_MAX * 1000L, iField.getMillis(INTEGER_MAX, 567L));
    }

    public void test_getMillis_long_long() {
        assertEquals(0L, iField.getMillis(0L, 567L));
        assertEquals(1234000L, iField.getMillis(1234L, 567L));
        assertEquals(-1234000L, iField.getMillis(-1234L, 567L));
        try {
            iField.getMillis(LONG_MAX, 567L);
            fail();
        } catch (ArithmeticException ex) {}
    }

    //-----------------------------------------------------------------------
    public void test_add_long_int() {
        assertEquals(567L, iField.add(567L, 0));
        assertEquals(567L + 1234000L, iField.add(567L, 1234));
        assertEquals(567L - 1234000L, iField.add(567L, -1234));
        try {
            iField.add(LONG_MAX, 1);
            fail();
        } catch (ArithmeticException ex) {}
    }

    public void test_add_long_long() {
        assertEquals(567L, iField.add(567L, 0L));
        assertEquals(567L + 1234000L, iField.add(567L, 1234L));
        assertEquals(567L - 1234000L, iField.add(567L, -1234L));
        try {
            iField.add(LONG_MAX, 1L);
            fail();
        } catch (ArithmeticException ex) {}
        try {
            iField.add(1L, LONG_MAX);
            fail();
        } catch (ArithmeticException ex) {}
    }

    //-----------------------------------------------------------------------
    public void test_getDifference_long_int() {
        assertEquals(0, iField.getDifference(1L, 0L));
        assertEquals(567, iField.getDifference(567000L, 0L));
        assertEquals(567 - 1234, iField.getDifference(567000L, 1234000L));
        assertEquals(567 + 1234, iField.getDifference(567000L, -1234000L));
        try {
            iField.getDifference(LONG_MAX, -1L);
            fail();
        } catch (ArithmeticException ex) {}
    }

    public void test_getDifferenceAsLong_long_long() {
        assertEquals(0L, iField.getDifferenceAsLong(1L, 0L));
        assertEquals(567L, iField.getDifferenceAsLong(567000L, 0L));
        assertEquals(567L - 1234L, iField.getDifferenceAsLong(567000L, 1234000L));
        assertEquals(567L + 1234L, iField.getDifferenceAsLong(567000L, -1234000L));
        try {
            iField.getDifferenceAsLong(LONG_MAX, -1L);
            fail();
        } catch (ArithmeticException ex) {}
    }

    //-----------------------------------------------------------------------
    public void test_equals() {
        assertEquals(true, iField.equals(iField));
        assertEquals(false, iField.equals(ISOChronology.getInstance().minutes()));
        DurationField dummy = new PreciseDurationField(DurationFieldType.seconds(), 0);
        assertEquals(false, iField.equals(dummy));
        dummy = new PreciseDurationField(DurationFieldType.seconds(), 1000);
        assertEquals(true, iField.equals(dummy));
        dummy = new PreciseDurationField(DurationFieldType.millis(), 1000);
        assertEquals(false, iField.equals(dummy));
        assertEquals(false, iField.equals(""));
        assertEquals(false, iField.equals(null));
    }

    public void test_hashCode() {
        assertEquals(true, iField.hashCode() == iField.hashCode());
        assertEquals(false, iField.hashCode() == ISOChronology.getInstance().minutes().hashCode());
        DurationField dummy = new PreciseDurationField(DurationFieldType.seconds(), 0);
        assertEquals(false, iField.hashCode() == dummy.hashCode());
        dummy = new PreciseDurationField(DurationFieldType.seconds(), 1000);
        assertEquals(true, iField.hashCode() == dummy.hashCode());
        dummy = new PreciseDurationField(DurationFieldType.millis(), 1000);
        assertEquals(false, iField.hashCode() == dummy.hashCode());
    }

    //-----------------------------------------------------------------------
    public void test_compareTo() {
        assertEquals(0, iField.compareTo(iField));
        assertEquals(-1, iField.compareTo(ISOChronology.getInstance().minutes()));
        DurationField dummy = new PreciseDurationField(DurationFieldType.seconds(), 0);
        assertEquals(1, iField.compareTo(dummy));
//        try {
//            iField.compareTo("");
//            fail();
//        } catch (ClassCastException ex) {}
        try {
            iField.compareTo(null);
            fail();
        } catch (NullPointerException ex) {}
    }

    //-----------------------------------------------------------------------
    public void testSerialization() throws Exception {
        DurationField test = iField;
        
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(baos);
        oos.writeObject(test);
        oos.close();
        byte[] bytes = baos.toByteArray();
        
        ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
        ObjectInputStream ois = new ObjectInputStream(bais);
        DurationField result = (DurationField) ois.readObject();
        ois.close();
        
        assertEquals(test, result);
    }

}

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