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Java example source code file (Vector1DFormatAbstractTest.java)

This example Java source code file (Vector1DFormatAbstractTest.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

infinity, locale, mathparseexception, nan, numberformat, parseposition, string, test, text, util, vector1d, vector1dformat, vector1dformatabstracttest

The Vector1DFormatAbstractTest.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.math3.geometry.euclidean.oned;

import java.text.NumberFormat;
import java.text.ParsePosition;
import java.util.Locale;

import org.apache.commons.math3.exception.MathParseException;
import org.junit.Assert;
import org.junit.Test;

public abstract class Vector1DFormatAbstractTest {

    Vector1DFormat vector1DFormat = null;
    Vector1DFormat vector1DFormatSquare = null;

    protected abstract Locale getLocale();

    protected abstract char getDecimalCharacter();

    protected Vector1DFormatAbstractTest() {
        vector1DFormat = Vector1DFormat.getInstance(getLocale());
        final NumberFormat nf = NumberFormat.getInstance(getLocale());
        nf.setMaximumFractionDigits(2);
        vector1DFormatSquare = new Vector1DFormat("[", "]", nf);
    }

    @Test
    public void testSimpleNoDecimals() {
        Vector1D c = new Vector1D(1);
        String expected = "{1}";
        String actual = vector1DFormat.format(c);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testSimpleWithDecimals() {
        Vector1D c = new Vector1D(1.23);
        String expected =
            "{1"    + getDecimalCharacter() +
            "23}";
        String actual = vector1DFormat.format(c);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testSimpleWithDecimalsTrunc() {
        Vector1D c = new Vector1D(1.232323232323);
        String expected =
            "{1"    + getDecimalCharacter() +
            "2323232323}";
        String actual = vector1DFormat.format(c);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testNegativeX() {
        Vector1D c = new Vector1D(-1.232323232323);
        String expected =
            "{-1"    + getDecimalCharacter() +
            "2323232323}";
        String actual = vector1DFormat.format(c);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testNonDefaultSetting() {
        Vector1D c = new Vector1D(1);
        String expected = "[1]";
        String actual = vector1DFormatSquare.format(c);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testDefaultFormatVector1D() {
        Locale defaultLocal = Locale.getDefault();
        Locale.setDefault(getLocale());

        Vector1D c = new Vector1D(232.22222222222);
        String expected =
            "{232"    + getDecimalCharacter() +
            "2222222222}";
        String actual = (new Vector1DFormat()).format(c);
        Assert.assertEquals(expected, actual);

        Locale.setDefault(defaultLocal);
    }

    @Test
    public void testNan() {
        Vector1D c = Vector1D.NaN;
        String expected = "{(NaN)}";
        String actual = vector1DFormat.format(c);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testPositiveInfinity() {
        Vector1D c = Vector1D.POSITIVE_INFINITY;
        String expected = "{(Infinity)}";
        String actual = vector1DFormat.format(c);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void tesNegativeInfinity() {
        Vector1D c = Vector1D.NEGATIVE_INFINITY;
        String expected = "{(-Infinity)}";
        String actual = vector1DFormat.format(c);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseSimpleNoDecimals() throws MathParseException {
        String source = "{1}";
        Vector1D expected = new Vector1D(1);
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseIgnoredWhitespace() {
        Vector1D expected = new Vector1D(1);
        ParsePosition pos1 = new ParsePosition(0);
        String source1 = "{1}";
        Assert.assertEquals(expected, vector1DFormat.parse(source1, pos1));
        Assert.assertEquals(source1.length(), pos1.getIndex());
        ParsePosition pos2 = new ParsePosition(0);
        String source2 = " { 1 } ";
        Assert.assertEquals(expected, vector1DFormat.parse(source2, pos2));
        Assert.assertEquals(source2.length() - 1, pos2.getIndex());
    }

    @Test
    public void testParseSimpleWithDecimals() throws MathParseException {
        String source =
            "{1" + getDecimalCharacter() +
            "23}";
        Vector1D expected = new Vector1D(1.23);
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseSimpleWithDecimalsTrunc() throws MathParseException {
        String source =
            "{1" + getDecimalCharacter() +
            "2323}";
        Vector1D expected = new Vector1D(1.2323);
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseNegativeX() throws MathParseException {
        String source =
            "{-1" + getDecimalCharacter() +
            "2323}";
        Vector1D expected = new Vector1D(-1.2323);
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseNegativeY() throws MathParseException {
        String source =
            "{1" + getDecimalCharacter() +
            "2323}";
        Vector1D expected = new Vector1D(1.2323);
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseNegativeZ() throws MathParseException {
        String source =
            "{1" + getDecimalCharacter() +
            "2323}";
        Vector1D expected = new Vector1D(1.2323);
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseNegativeAll() throws MathParseException {
        String source =
            "{-1" + getDecimalCharacter() +
            "2323}";
        Vector1D expected = new Vector1D(-1.2323);
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseZeroX() throws MathParseException {
        String source =
            "{0" + getDecimalCharacter() +
            "0}";
        Vector1D expected = new Vector1D(0.0);
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseNonDefaultSetting() throws MathParseException {
        String source =
            "[1" + getDecimalCharacter() +
            "2323]";
        Vector1D expected = new Vector1D(1.2323);
        Vector1D actual = vector1DFormatSquare.parse(source);
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testParseNan() throws MathParseException {
        String source = "{(NaN)}";
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(Vector1D.NaN, actual);
    }

    @Test
    public void testParsePositiveInfinity() throws MathParseException {
        String source = "{(Infinity)}";
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(Vector1D.POSITIVE_INFINITY, actual);
    }

    @Test
    public void testParseNegativeInfinity() throws MathParseException {
        String source = "{(-Infinity)}";
        Vector1D actual = vector1DFormat.parse(source);
        Assert.assertEquals(Vector1D.NEGATIVE_INFINITY, actual);
    }

    @Test
    public void testConstructorSingleFormat() {
        NumberFormat nf = NumberFormat.getInstance();
        Vector1DFormat cf = new Vector1DFormat(nf);
        Assert.assertNotNull(cf);
        Assert.assertEquals(nf, cf.getFormat());
    }

    @Test
    public void testForgottenPrefix() {
        ParsePosition pos = new ParsePosition(0);
        Assert.assertNull(new Vector1DFormat().parse("1}", pos));
        Assert.assertEquals(0, pos.getErrorIndex());
    }

    @Test
    public void testForgottenSuffix() {
        ParsePosition pos = new ParsePosition(0);
        Assert.assertNull(new Vector1DFormat().parse("{1 ", pos));
        Assert.assertEquals(2, pos.getErrorIndex());
    }

}

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