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/*
* Copyright (c) 1998, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.Choice;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Panel;
/*
* @test
* @bug 4115139 4128213
* @summary Tests that the (rather bizarre) rules for handling selection
* in Choice components are implemented as documented in
* "The Java Class Libraries 2nd Edition"
* @key headful
*/
public class ChoiceSelectTest extends Panel {
final Choice c;
public ChoiceSelectTest() {
setLayout(new FlowLayout());
c = new Choice();
add(c);
}
private void test() {
testAddition();
testInsertion();
testRemoval();
testIndices();
}
public void testAddition() {
c.removeAll();
// check that after first item added selection is zero
c.addItem("zero");
if (c.getSelectedIndex() != 0) {
throw new SelectionException("selection wrong after first add");
}
// check that selection doesn't change for subsequent adds
c.addItem("one");
c.select(1);
c.addItem("two");
if (c.getSelectedIndex() != 1) {
throw new SelectionException("selection wrong after subsequent add");
}
}
public void testInsertion() {
c.removeAll();
// check that after first item inserted selection is zero
c.insert("zero", 0);
if (c.getSelectedIndex() != 0) {
throw new SelectionException("selection wrong after first insert");
}
// check that if selected item shifted, selection goes to zero
c.insert("three", 1);
c.select(1);
c.insert("one", 1);
if (c.getSelectedIndex() != 0) {
throw new SelectionException("selection wrong after selected item shifted");
}
// check that if selected item not shifted, selection stays the same
c.select(1);
c.insert("two", 2);
if (c.getSelectedIndex() != 1) {
throw new SelectionException("selection wrong after item inserted after selection");
}
}
public void testRemoval() {
c.removeAll();
// check that if removing selected item, selection goes to 0
c.add("zero");
c.add("one");
c.add("two");
c.select(2);
c.remove(2);
if (c.getSelectedIndex() != 0) {
throw new SelectionException("selection wrong after removing selected item");
}
// check that if removing item before the selection
// the selected index is updated
c.add("two");
c.add("three");
c.select(3);
c.remove(1);
if (c.getSelectedIndex() != 2) {
throw new SelectionException("selection wrong after removing item before it");
}
}
public void testIndices() {
c.removeAll();
c.addItem("zero");
c.addItem("one");
c.addItem("two");
c.addItem("three");
c.addItem("four");
c.addItem("five");
// Test selection of negative index
try {
c.select(-1);
throw new SelectionException("Negative Index Test FAILED");
} catch (IllegalArgumentException expected) {}
// Test selection of zero index
try {
c.select(0);
} catch (IllegalArgumentException iae) {
throw new SelectionException("Zero Index Test FAILED", iae);
}
// Test selection of maximum index
try {
c.select(5);
} catch (IllegalArgumentException iae) {
throw new SelectionException("Maximum Index Test FAILED", iae);
}
// Test selection of index that is too large
try {
c.select(6);
throw new SelectionException("Greater than Maximum Index Test FAILED");
} catch (IllegalArgumentException expected) {}
}
public static void main(String[] args) throws Exception {
EventQueue.invokeAndWait(() -> new ChoiceSelectTest().test());
}
class SelectionException extends RuntimeException {
SelectionException(String msg, Throwable cause) {
super(msg, cause);
System.out.println(
"Selection item is '" + c.getSelectedItem() +
"' at index " + c.getSelectedIndex());
}
SelectionException(String msg) {
this(msg, null);
}
}
}
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