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tests.java.javatests.PySetInJavaTest Maven / Gradle / Ivy
Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
package javatests;
import java.util.Iterator;
import java.util.Random;
import java.util.Set;
import org.python.core.PySet;
import org.python.core.PyTuple;
import org.python.util.Generic;
public class PySetInJavaTest {
@SuppressWarnings("unchecked")
public static Set createPySetContainingJavaObjects() {
PySet s = new PySet();
s.add("value");
s.add(new Random());
return s;
}
public static void testPySetAsJavaSet() {
PySet s = new PySet();
String v = "value";
check(s.add(v));// Add a String as it should be wrapped in PyString
check(!s.add(v));
String[] asArray = (String[])s.toArray(new String[0]);// The array type should be the same
// and it should be resized properly
check(asArray.length == 1);
check(asArray[0] == v);
Object[] naiveArray = s.toArray();
check(naiveArray.length == 1);
check(naiveArray[0] == v);
// Add a Random as it should be wrapped in a generic PyObject; go through addAll to give it
// a little exercise
Random rand = new Random();
check(s.addAll(Generic.list(rand)));
check(!s.addAll(Generic.list(rand, v)));
naiveArray = s.toArray();
check(naiveArray.length == 2);
for (Object object : naiveArray) {
if (object instanceof String) {
check(object == v);
} else {
check(object == rand, "Should be 'value' or rand, not " + object);
}
}
check(!s.remove(new Random()), "The Random in the set shouldn't match a new Random");
check(s.remove(rand));
check(s.removeAll(Generic.list(rand, v)),
"The set should contain v and indicate it removed it");
check(s.isEmpty());
check(s.addAll(Generic.list(rand, v)));
check(2 == s.size(), "There should be 2 items, not " + s.size());
check(s.containsAll(Generic.list(rand, v)));
check(!s.containsAll(Generic.list(rand, v, "other")));
check(s.retainAll(Generic.list(rand)));
check(!s.retainAll(Generic.list(rand)));
check(s.addAll(Generic.list(rand, v)));
check(2 == s.size(), "There should be 2 items, not " + s.size());
check(!s.addAll(Generic.list(rand, v)));
check(2 == s.size(), "There should be 2 items, not " + s.size());
}
public static void accessAndRemovePySetItems(Set items) {
check(items instanceof PySet, "The set shouldn't be __tojava'd into " + items.getClass());
check(items.size() == 3, "Should be 3 items, not " + items.size());
check(items.contains("value"), "The set from Python should contain 'value'");
check(!items.contains(new Random()), "The set contains a particular Random");
Iterator it = items.iterator();
while (it.hasNext()) {
Object object = it.next();
check(items.contains(object), "The set should contain all items from its iterator");
if (object instanceof String) {
check(object.equals("value"), "The string should be 'value', not '" + object + "'");
} else {
check(object instanceof Random || object instanceof PyTuple,
"The objects in the set should be a String, a Random or a PyTuple, not a "
+ object.getClass());
}
it.remove(); // Tests that removing on the iterator works
}
}
private static void check(boolean testVal) {
check(testVal, "");
}
private static void check(boolean testVal, String failMsg) {
if (!testVal) {
throw new RuntimeException(failMsg);
}
}
}
