Java example source code file (TripleTest.java)

This example Java source code file (TripleTest.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

boolean, calendar, exception, immutabletriple, key, key,something,value, long, something, string, test, triple, util

The TripleTest.java Java example source code

/*
 * 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.lang3.tuple;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

import java.util.Calendar;
import java.util.HashSet;

import org.junit.Test;

/**
 * Test the Triple class.
 */
public class TripleTest {

    @Test
    public void testTripleOf() throws Exception {
        final Triple<Integer, String, Boolean> triple = Triple.of(0, "foo", Boolean.TRUE);
        assertTrue(triple instanceof ImmutableTriple<?, ?, ?>);
        assertEquals(0, ((ImmutableTriple<Integer, String, Boolean>) triple).left.intValue());
        assertEquals("foo", ((ImmutableTriple<Integer, String, Boolean>) triple).middle);
        assertEquals(Boolean.TRUE, ((ImmutableTriple<Integer, String, Boolean>) triple).right);
        final Triple<Object, String, Long> triple2 = Triple.of(null, "bar", Long.valueOf(200L));
        assertTrue(triple2 instanceof ImmutableTriple<?, ?, ?>);
        assertNull(((ImmutableTriple<Object, String, Long>) triple2).left);
        assertEquals("bar", ((ImmutableTriple<Object, String, Long>) triple2).middle);
        assertEquals(new Long(200L), ((ImmutableTriple<Object, String, Long>) triple2).right);
    }

    @Test
    public void testCompatibilityBetweenTriples() throws Exception {
        final Triple<Integer, String, Boolean> triple = ImmutableTriple.of(0, "foo", Boolean.TRUE);
        final Triple<Integer, String, Boolean> triple2 = MutableTriple.of(0, "foo", Boolean.TRUE);
        assertEquals(triple, triple2);
        assertEquals(triple.hashCode(), triple2.hashCode());
        final HashSet<Triple set = new HashSet>();
        set.add(triple);
        assertTrue(set.contains(triple2));
    }

    @Test
    public void testComparable1() throws Exception {
        final Triple<String, String, String> triple1 = Triple.of("A", "D", "A");
        final Triple<String, String, String> triple2 = Triple.of("B", "C", "A");
        assertTrue(triple1.compareTo(triple1) == 0);
        assertTrue(triple1.compareTo(triple2) < 0);
        assertTrue(triple2.compareTo(triple2) == 0);
        assertTrue(triple2.compareTo(triple1) > 0);
    }

    @Test
    public void testComparable2() throws Exception {
        final Triple<String, String, String> triple1 = Triple.of("A", "C", "B");
        final Triple<String, String, String> triple2 = Triple.of("A", "D", "B");
        assertTrue(triple1.compareTo(triple1) == 0);
        assertTrue(triple1.compareTo(triple2) < 0);
        assertTrue(triple2.compareTo(triple2) == 0);
        assertTrue(triple2.compareTo(triple1) > 0);
    }

    @Test
    public void testComparable3() throws Exception {
        final Triple<String, String, String> triple1 = Triple.of("A", "A", "D");
        final Triple<String, String, String> triple2 = Triple.of("A", "B", "C");
        assertTrue(triple1.compareTo(triple1) == 0);
        assertTrue(triple1.compareTo(triple2) < 0);
        assertTrue(triple2.compareTo(triple2) == 0);
        assertTrue(triple2.compareTo(triple1) > 0);
    }

    @Test
    public void testComparable4() throws Exception {
        final Triple<String, String, String> triple1 = Triple.of("B", "A", "C");
        final Triple<String, String, String> triple2 = Triple.of("B", "A", "D");
        assertTrue(triple1.compareTo(triple1) == 0);
        assertTrue(triple1.compareTo(triple2) < 0);
        assertTrue(triple2.compareTo(triple2) == 0);
        assertTrue(triple2.compareTo(triple1) > 0);
    }

    @Test
    public void testToString() throws Exception {
        final Triple<String, String, String> triple = Triple.of("Key", "Something", "Value");
        assertEquals("(Key,Something,Value)", triple.toString());
    }

    @Test
    public void testToStringCustom() throws Exception {
        final Calendar date = Calendar.getInstance();
        date.set(2011, Calendar.APRIL, 25);
        final Triple<String, String, Calendar> triple = Triple.of("DOB", "string", date);
        assertEquals("Test created on " + "04-25-2011", triple.toString("Test created on %3$tm-%3$td-%3$tY"));
    }

    @Test
    public void testFormattable_simple() throws Exception {
        final Triple<String, String, String> triple = Triple.of("Key", "Something", "Value");
        assertEquals("(Key,Something,Value)", String.format("%1$s", triple));
    }

    @Test
    public void testFormattable_padded() throws Exception {
        final Triple<String, String, String> triple = Triple.of("Key", "Something", "Value");
        assertEquals("         (Key,Something,Value)", String.format("%1$30s", triple));
    }

}