/*
* 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.math4.linear;
import java.text.NumberFormat;
import java.text.ParsePosition;
import java.util.Locale;
import org.junit.Test;
import org.junit.Assert;
import org.apache.commons.math4.exception.MathParseException;
import org.apache.commons.math4.linear.ArrayRealVector;
import org.apache.commons.math4.linear.RealVectorFormat;
public abstract class RealVectorFormatAbstractTest {
RealVectorFormat realVectorFormat = null;
RealVectorFormat realVectorFormatSquare = null;
protected abstract Locale getLocale();
protected abstract char getDecimalCharacter();
public RealVectorFormatAbstractTest() {
realVectorFormat = RealVectorFormat.getInstance(getLocale());
final NumberFormat nf = NumberFormat.getInstance(getLocale());
nf.setMaximumFractionDigits(2);
realVectorFormatSquare = new RealVectorFormat("[", "]", " : ", nf);
}
@Test
public void testSimpleNoDecimals() {
ArrayRealVector c = new ArrayRealVector(new double[] {1, 1, 1});
String expected = "{1; 1; 1}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testSimpleWithDecimals() {
ArrayRealVector c = new ArrayRealVector(new double[] {1.23, 1.43, 1.63});
String expected =
"{1" + getDecimalCharacter() +
"23; 1" + getDecimalCharacter() +
"43; 1" + getDecimalCharacter() +
"63}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testSimpleWithDecimalsTrunc() {
ArrayRealVector c = new ArrayRealVector(new double[] {1.232323232323, 1.43434343434343, 1.633333333333});
String expected =
"{1" + getDecimalCharacter() +
"2323232323; 1" + getDecimalCharacter() +
"4343434343; 1" + getDecimalCharacter() +
"6333333333}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testNegativeX() {
ArrayRealVector c = new ArrayRealVector(new double[] {-1.232323232323, 1.43, 1.63});
String expected =
"{-1" + getDecimalCharacter() +
"2323232323; 1" + getDecimalCharacter() +
"43; 1" + getDecimalCharacter() +
"63}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testNegativeY() {
ArrayRealVector c = new ArrayRealVector(new double[] {1.23, -1.434343434343, 1.63});
String expected =
"{1" + getDecimalCharacter() +
"23; -1" + getDecimalCharacter() +
"4343434343; 1" + getDecimalCharacter() +
"63}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testNegativeZ() {
ArrayRealVector c = new ArrayRealVector(new double[] {1.23, 1.43, -1.633333333333});
String expected =
"{1" + getDecimalCharacter() +
"23; 1" + getDecimalCharacter() +
"43; -1" + getDecimalCharacter() +
"6333333333}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testNonDefaultSetting() {
ArrayRealVector c = new ArrayRealVector(new double[] {1, 1, 1});
String expected = "[1 : 1 : 1]";
String actual = realVectorFormatSquare.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testDefaultFormatRealVectorImpl() {
Locale defaultLocal = Locale.getDefault();
Locale.setDefault(getLocale());
ArrayRealVector c = new ArrayRealVector(new double[] {232.22222222222, -342.3333333333, 432.44444444444});
String expected =
"{232" + getDecimalCharacter() +
"2222222222; -342" + getDecimalCharacter() +
"3333333333; 432" + getDecimalCharacter() +
"4444444444}";
String actual = (new RealVectorFormat()).format(c);
Assert.assertEquals(expected, actual);
Locale.setDefault(defaultLocal);
}
@Test
public void testNan() {
ArrayRealVector c = new ArrayRealVector(new double[] {Double.NaN, Double.NaN, Double.NaN});
String expected = "{(NaN); (NaN); (NaN)}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testPositiveInfinity() {
ArrayRealVector c = new ArrayRealVector(new double[] {
Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY
});
String expected = "{(Infinity); (Infinity); (Infinity)}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void tesNegativeInfinity() {
ArrayRealVector c = new ArrayRealVector(new double[] {
Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY
});
String expected = "{(-Infinity); (-Infinity); (-Infinity)}";
String actual = realVectorFormat.format(c);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseSimpleNoDecimals() {
String source = "{1; 1; 1}";
ArrayRealVector expected = new ArrayRealVector(new double[] {1, 1, 1});
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseIgnoredWhitespace() {
ArrayRealVector expected = new ArrayRealVector(new double[] {1, 1, 1});
ParsePosition pos1 = new ParsePosition(0);
String source1 = "{1;1;1}";
Assert.assertEquals(expected, realVectorFormat.parse(source1, pos1));
Assert.assertEquals(source1.length(), pos1.getIndex());
ParsePosition pos2 = new ParsePosition(0);
String source2 = " { 1 ; 1 ; 1 } ";
Assert.assertEquals(expected, realVectorFormat.parse(source2, pos2));
Assert.assertEquals(source2.length() - 1, pos2.getIndex());
}
@Test
public void testParseSimpleWithDecimals() {
String source =
"{1" + getDecimalCharacter() +
"23; 1" + getDecimalCharacter() +
"43; 1" + getDecimalCharacter() +
"63}";
ArrayRealVector expected = new ArrayRealVector(new double[] {1.23, 1.43, 1.63});
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseSimpleWithDecimalsTrunc() {
String source =
"{1" + getDecimalCharacter() +
"2323; 1" + getDecimalCharacter() +
"4343; 1" + getDecimalCharacter() +
"6333}";
ArrayRealVector expected = new ArrayRealVector(new double[] {1.2323, 1.4343, 1.6333});
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseNegativeX() {
String source =
"{-1" + getDecimalCharacter() +
"2323; 1" + getDecimalCharacter() +
"4343; 1" + getDecimalCharacter() +
"6333}";
ArrayRealVector expected = new ArrayRealVector(new double[] {-1.2323, 1.4343, 1.6333});
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseNegativeY() {
String source =
"{1" + getDecimalCharacter() +
"2323; -1" + getDecimalCharacter() +
"4343; 1" + getDecimalCharacter() +
"6333}";
ArrayRealVector expected = new ArrayRealVector(new double[] {1.2323, -1.4343, 1.6333});
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseNegativeZ() {
String source =
"{1" + getDecimalCharacter() +
"2323; 1" + getDecimalCharacter() +
"4343; -1" + getDecimalCharacter() +
"6333}";
ArrayRealVector expected = new ArrayRealVector(new double[] {1.2323, 1.4343, -1.6333});
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseNegativeAll() {
String source =
"{-1" + getDecimalCharacter() +
"2323; -1" + getDecimalCharacter() +
"4343; -1" + getDecimalCharacter() +
"6333}";
ArrayRealVector expected = new ArrayRealVector(new double[] {-1.2323, -1.4343, -1.6333});
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseZeroX() {
String source =
"{0" + getDecimalCharacter() +
"0; -1" + getDecimalCharacter() +
"4343; 1" + getDecimalCharacter() +
"6333}";
ArrayRealVector expected = new ArrayRealVector(new double[] {0.0, -1.4343, 1.6333});
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseNonDefaultSetting() {
String source =
"[1" + getDecimalCharacter() +
"2323 : 1" + getDecimalCharacter() +
"4343 : 1" + getDecimalCharacter() +
"6333]";
ArrayRealVector expected = new ArrayRealVector(new double[] {1.2323, 1.4343, 1.6333});
ArrayRealVector actual = realVectorFormatSquare.parse(source);
Assert.assertEquals(expected, actual);
}
@Test
public void testParseNan() {
String source = "{(NaN); (NaN); (NaN)}";
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(new ArrayRealVector(new double[] {Double.NaN, Double.NaN, Double.NaN}), actual);
}
@Test
public void testParsePositiveInfinity() {
String source = "{(Infinity); (Infinity); (Infinity)}";
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(new ArrayRealVector(new double[] {
Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY
}), actual);
}
@Test
public void testParseNegativeInfinity() {
String source = "{(-Infinity); (-Infinity); (-Infinity)}";
ArrayRealVector actual = realVectorFormat.parse(source);
Assert.assertEquals(new ArrayRealVector(new double[] {
Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY
}), actual);
}
@Test
public void testParseNoComponents() {
try {
realVectorFormat.parse("{ }");
Assert.fail("Expecting MathParseException");
} catch (MathParseException pe) {
// expected behavior
}
}
@Test
public void testParseManyComponents() {
ArrayRealVector parsed = realVectorFormat.parse("{0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0}");
Assert.assertEquals(24, parsed.getDimension());
}
@Test
public void testConstructorSingleFormat() {
NumberFormat nf = NumberFormat.getInstance();
RealVectorFormat cf = new RealVectorFormat(nf);
Assert.assertNotNull(cf);
Assert.assertEquals(nf, cf.getFormat());
}
@Test
public void testForgottenPrefix() {
ParsePosition pos = new ParsePosition(0);
final String source = "1; 1; 1}";
Assert.assertNull("Should not parse <"+source+">",new RealVectorFormat().parse(source, pos));
Assert.assertEquals(0, pos.getErrorIndex());
}
@Test
public void testForgottenSeparator() {
ParsePosition pos = new ParsePosition(0);
final String source = "{1; 1 1}";
Assert.assertNull("Should not parse <"+source+">",new RealVectorFormat().parse(source, pos));
Assert.assertEquals(6, pos.getErrorIndex());
}
@Test
public void testForgottenSuffix() {
ParsePosition pos = new ParsePosition(0);
final String source = "{1; 1; 1 ";
Assert.assertNull("Should not parse <"+source+">",new RealVectorFormat().parse(source, pos));
Assert.assertEquals(8, pos.getErrorIndex());
}
}