/*
* 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.math.complex;
import java.text.NumberFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.Locale;
import org.apache.commons.math.util.CompositeFormat;
import junit.framework.TestCase;
public abstract class ComplexFormatAbstractTest extends TestCase {
CompositeFormat complexFormat = null;
ComplexFormat complexFormatJ = null;
protected abstract Locale getLocale();
protected abstract char getDecimalCharacter();
@Override
protected void setUp() throws Exception {
complexFormat = ComplexFormat.getInstance(getLocale());
complexFormatJ = ComplexFormat.getInstance(getLocale());
complexFormatJ.setImaginaryCharacter("j");
}
public void testSimpleNoDecimals() {
Complex c = new Complex(1, 1);
String expected = "1 + 1i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testSimpleWithDecimals() {
Complex c = new Complex(1.23, 1.43);
String expected = "1" + getDecimalCharacter() + "23 + 1" + getDecimalCharacter() + "43i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testSimpleWithDecimalsTrunc() {
Complex c = new Complex(1.2323, 1.4343);
String expected = "1" + getDecimalCharacter() + "23 + 1" + getDecimalCharacter() + "43i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testNegativeReal() {
Complex c = new Complex(-1.2323, 1.4343);
String expected = "-1" + getDecimalCharacter() + "23 + 1" + getDecimalCharacter() + "43i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testNegativeImaginary() {
Complex c = new Complex(1.2323, -1.4343);
String expected = "1" + getDecimalCharacter() + "23 - 1" + getDecimalCharacter() + "43i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testNegativeBoth() {
Complex c = new Complex(-1.2323, -1.4343);
String expected = "-1" + getDecimalCharacter() + "23 - 1" + getDecimalCharacter() + "43i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testZeroReal() {
Complex c = new Complex(0.0, -1.4343);
String expected = "0 - 1" + getDecimalCharacter() + "43i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testZeroImaginary() {
Complex c = new Complex(30.233, 0);
String expected = "30" + getDecimalCharacter() + "23";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testDifferentImaginaryChar() {
Complex c = new Complex(1, 1);
String expected = "1 + 1j";
String actual = complexFormatJ.format(c);
assertEquals(expected, actual);
}
public void testStaticFormatComplex() {
Locale defaultLocal = Locale.getDefault();
Locale.setDefault(getLocale());
Complex c = new Complex(232.222, -342.33);
String expected = "232" + getDecimalCharacter() + "22 - 342" + getDecimalCharacter() + "33i";
String actual = ComplexFormat.formatComplex(c);
assertEquals(expected, actual);
Locale.setDefault(defaultLocal);
}
public void testNan() {
Complex c = new Complex(Double.NaN, Double.NaN);
String expected = "(NaN) + (NaN)i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testPositiveInfinity() {
Complex c = new Complex(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
String expected = "(Infinity) + (Infinity)i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testNegativeInfinity() {
Complex c = new Complex(Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY);
String expected = "(-Infinity) - (Infinity)i";
String actual = complexFormat.format(c);
assertEquals(expected, actual);
}
public void testParseSimpleNoDecimals() {
String source = "1 + 1i";
Complex expected = new Complex(1, 1);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseSimpleWithDecimals() {
String source = "1" + getDecimalCharacter() + "23 + 1" + getDecimalCharacter() + "43i";
Complex expected = new Complex(1.23, 1.43);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseSimpleWithDecimalsTrunc() {
String source = "1" + getDecimalCharacter() + "2323 + 1" + getDecimalCharacter() + "4343i";
Complex expected = new Complex(1.2323, 1.4343);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseNegativeReal() {
String source = "-1" + getDecimalCharacter() + "2323 + 1" + getDecimalCharacter() + "4343i";
Complex expected = new Complex(-1.2323, 1.4343);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseNegativeImaginary() {
String source = "1" + getDecimalCharacter() + "2323 - 1" + getDecimalCharacter() + "4343i";
Complex expected = new Complex(1.2323, -1.4343);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseNegativeBoth() {
String source = "-1" + getDecimalCharacter() + "2323 - 1" + getDecimalCharacter() + "4343i";
Complex expected = new Complex(-1.2323, -1.4343);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseZeroReal() {
String source = "0" + getDecimalCharacter() + "0 - 1" + getDecimalCharacter() + "4343i";
Complex expected = new Complex(0.0, -1.4343);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseZeroImaginary() {
String source = "-1" + getDecimalCharacter() + "2323";
Complex expected = new Complex(-1.2323, 0);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseDifferentImaginaryChar() {
String source = "-1" + getDecimalCharacter() + "2323 - 1" + getDecimalCharacter() + "4343j";
Complex expected = new Complex(-1.2323, -1.4343);
try {
Complex actual = (Complex)complexFormatJ.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParseNan() {
String source = "(NaN) + (NaN)i";
Complex expected = new Complex(Double.NaN, Double.NaN);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testParsePositiveInfinity() {
String source = "(Infinity) + (Infinity)i";
Complex expected = new Complex(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testPaseNegativeInfinity() {
String source = "(-Infinity) - (Infinity)i";
Complex expected = new Complex(Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY);
try {
Complex actual = (Complex)complexFormat.parseObject(source);
assertEquals(expected, actual);
} catch (ParseException ex) {
fail(ex.getMessage());
}
}
public void testConstructorSingleFormat() {
NumberFormat nf = NumberFormat.getInstance();
ComplexFormat cf = new ComplexFormat(nf);
assertNotNull(cf);
assertEquals(nf, cf.getRealFormat());
}
public void testGetImaginaryFormat() {
NumberFormat nf = NumberFormat.getInstance();
ComplexFormat cf = new ComplexFormat();
assertNotSame(nf, cf.getImaginaryFormat());
cf.setImaginaryFormat(nf);
assertSame(nf, cf.getImaginaryFormat());
}
public void testSetImaginaryFormatNull() {
try {
ComplexFormat cf = new ComplexFormat();
cf.setImaginaryFormat(null);
fail();
} catch (IllegalArgumentException ex) {
// success
}
}
public void testSetRealFormatNull() {
try {
ComplexFormat cf = new ComplexFormat();
cf.setRealFormat(null);
fail();
} catch (IllegalArgumentException ex) {
// success
}
}
public void testGetRealFormat() {
NumberFormat nf = NumberFormat.getInstance();
ComplexFormat cf = new ComplexFormat();
assertNotSame(nf, cf.getRealFormat());
cf.setRealFormat(nf);
assertSame(nf, cf.getRealFormat());
}
public void testSetImaginaryCharacterNull() {
try {
ComplexFormat cf = new ComplexFormat();
cf.setImaginaryCharacter(null);
fail();
} catch (IllegalArgumentException ex) {
// success
}
}
public void testSetImaginaryCharacterEmpty() {
try {
ComplexFormat cf = new ComplexFormat();
cf.setImaginaryCharacter("");
fail();
} catch (IllegalArgumentException ex) {
// success
}
}
public void testFormatNumber() {
CompositeFormat cf = ComplexFormat.getInstance(getLocale());
Double pi = Double.valueOf(Math.PI);
String text = cf.format(pi);
assertEquals("3" + getDecimalCharacter() + "14", text);
}
public void testFormatObject() {
try {
CompositeFormat cf = new ComplexFormat();
Object object = new Object();
cf.format(object);
fail();
} catch (IllegalArgumentException ex) {
// success
}
}
public void testForgottenImaginaryCharacter() {
ParsePosition pos = new ParsePosition(0);
assertNull(new ComplexFormat().parse("1 + 1", pos));
assertEquals(5, pos.getErrorIndex());
}
}