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package org.python.core;
import junit.framework.TestCase;
import org.junit.Assert;
import org.python.util.PythonInterpreter;
/**
* Tests for PyArray.
*/
public class PyArrayTest extends TestCase {
public void testSetSliceNegativeStep() {
PyArray arrayToModify = new PyArray(PyString.class, new String[] {"a", "b", "c", "d"});
// Replacing single element
PyArray arrayOneElement = new PyArray(PyString.class, new String[] {"z"});
arrayToModify.setslice(0, 0, -1, arrayOneElement);
assertEquals(new PyArray(PyString.class, new String[] {"z", "b", "c", "d"}), arrayToModify);
// Replacing multiple elements
arrayToModify = new PyArray(PyString.class, new String[] {"a", "b", "c", "d"});
PyArray arrayThreeElements = new PyArray(PyString.class, new String[] {"x", "y", "z"});
arrayToModify.setslice(2, 0, -1, arrayThreeElements);
assertEquals(new PyArray(PyString.class, new String[] {"z", "y", "x", "d"}), arrayToModify);
// Replacing multiple elements - step size = (-2)
arrayToModify = new PyArray(PyString.class, new String[] {"a", "b", "c", "d"});
PyArray arrayTwoElements = new PyArray(PyString.class, new String[] {"x", "y"});
arrayToModify.setslice(3, 0, -2, arrayTwoElements);
assertEquals(new PyArray(PyString.class, new String[] {"a", "y", "c", "x"}), arrayToModify);
}
public void testSetSlicePositiveStep() {
PyArray arrayToModify = new PyArray(PyString.class, new String[] {"a", "b", "c", "d"});
// Replacing single element
PyArray arrayOneElement = new PyArray(PyString.class, new String[] {"z"});
arrayToModify.setslice(0, 1, 1, arrayOneElement);
assertEquals(new PyArray(PyString.class, new String[] {"z", "b", "c", "d"}), arrayToModify);
// Replacing multiple elements
arrayToModify = new PyArray(PyString.class, new String[] {"a", "b", "c", "d"});
PyArray arrayMultipleElements = new PyArray(PyString.class, new String[] {"x", "y"});
arrayToModify.setslice(1, 3, 1, arrayMultipleElements);
assertEquals(new PyArray(PyString.class, new String[] {"a", "x", "y", "d"}), arrayToModify);
// Replace multiple elements - step = 2
arrayToModify = new PyArray(PyString.class, new String[] {"a", "b", "c", "d"});
arrayMultipleElements = new PyArray(PyString.class, new String[] {"x", "y"});
arrayToModify.setslice(0, 3, 2, arrayMultipleElements);
assertEquals(new PyArray(PyString.class, new String[] {"x", "b", "y", "d"}), arrayToModify);
}
public void testCompactArray() {
// tests http://bugs.jython.org/issue1745
PythonInterpreter interp = new PythonInterpreter();
interp.set("arr", new double[3]);
interp.exec("arr.append(3.0)\n\n");
Object o = interp.get("arr", Object.class);
double[] a = (double[])o;
assertEquals(4, a.length);
assertEquals(0.0, a[0]);
assertEquals(3.0, a[3]);
}
public void testToJava() {
PythonInterpreter interp = new PythonInterpreter();
PyObject pyobj = interp.eval("[i * 2 for i in xrange(5)]");
Assert.assertArrayEquals
(new int[] {0, 2, 4, 6, 8},
(int[])pyobj.__tojava__(int[].class));
Assert.assertArrayEquals(
new Integer[] { 0, 2, 4, 6, 8},
(Object[])pyobj.__tojava__(Object[].class));
}
}
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