JSci.tests.TextIOTest Maven / Gradle / Ivy
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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software.
It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ...
Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).
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package JSci.tests;
import JSci.io.TextReader;
import JSci.io.TextWriter;
import JSci.maths.matrices.*;
import JSci.util.MatrixToolkit;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.IOException;
import junit.framework.*;
/**
* Testcase for TextReader/TextWriter.
* @author Mark
*/
public class TextIOTest extends junit.framework.TestCase {
public static void main(String arg[]) {
junit.textui.TestRunner.run(TextIOTest.class);
}
public TextIOTest(String name) {
super(name);
}
public void testArray2D() throws IOException {
double[][] data = {{3.45}, {54.776, 16.045}, {-23.6,2.45,-13.67}};
StringWriter buf = new StringWriter();
TextWriter writer = new TextWriter(buf, ',');
writer.write(data);
writer.close();
TextReader reader = new TextReader(new StringReader(buf.toString()));
double[][] actual = reader.readArray();
reader.close();
assertEquals(data, actual);
}
public void testMatrix() throws IOException {
AbstractDoubleMatrix m = MatrixToolkit.randomSquareMatrix(5);
StringWriter buf = new StringWriter();
TextWriter writer = new TextWriter(buf, ',');
writer.write(m);
writer.close();
TextReader reader = new TextReader(new StringReader(buf.toString()));
AbstractDoubleSquareMatrix actual = new DoubleSquareMatrix(m.rows());
reader.read(actual);
reader.close();
assertEquals(m, actual);
}
public void testMatrixTable() throws IOException {
AbstractDoubleMatrix m = MatrixToolkit.wilkinsonMatrix(7);
StringWriter buf = new StringWriter();
TextWriter writer = new TextWriter(buf, ',');
writer.writeTable(m);
writer.close();
TextReader reader = new TextReader(new StringReader(buf.toString()));
AbstractDoubleMatrix actual = new DoubleTridiagonalMatrix(m.rows());
reader.readTable(actual);
reader.close();
assertEquals(m, actual);
}
public static void assertEquals(double[][] expected, double[][] actual)
{
if(expected.length != actual.length)
throw new AssertionFailedError("Lengths are not equal");
for(int i=0; i