111 lines
4.2 KiB
Java
111 lines
4.2 KiB
Java
/*
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* Copyright (c) 2012, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8001209
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* @summary Confirm that the values set by setChoices() are not mutable.
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* @run junit Bug8001209
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*/
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import java.text.ChoiceFormat;
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import java.text.ParsePosition;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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public class Bug8001209 {
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// Represents the expected output of formatting the ChoiceFormat
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private static String expectedFormattedOutput;
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private static ChoiceFormat cFmt;
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private static ParsePosition status;
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private static String[] originalSetterArray;
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// Build the original ChoiceFormat to test if it can be mutated
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@BeforeAll
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static void setUpChoiceFormatAndOutput() {
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double[] limits = {1, 2, 3, 4, 5, 6, 7};
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originalSetterArray = new String[]{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
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// Constructor calls setChoices
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cFmt = new ChoiceFormat(limits, originalSetterArray);
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status = new ParsePosition(0);
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// Build the expected results of formatting with the original ChoiceFormat
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StringBuilder before = new StringBuilder();
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for (double i = 1.0; i <= 7.0; ++i) {
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status.setIndex(0);
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String s = cFmt.format(i);
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before.append(" ");
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before.append(s);
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before.append(cFmt.parse(cFmt.format(i), status));
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}
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expectedFormattedOutput = before.toString();
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}
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/*
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* Ensure that mutating the arrays returned by getChoices and getLimits does
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* not affect the internal representation of the ChoiceFormat.
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*/
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@Test
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public void immutableArraysFromGetters() {
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// Modify the array returned by getFormats() -> newFormats
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String[] newFormats = (String[]) cFmt.getFormats();
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newFormats[6] = "Doyoubi";
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StringBuilder after = new StringBuilder();
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for (double i = 1.0; i <= 7.0; ++i) {
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status.setIndex(0);
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String s = cFmt.format(i);
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after.append(" ");
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after.append(s);
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after.append(cFmt.parse(cFmt.format(i), status));
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}
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// Compare the expected results with the new formatted results
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assertEquals(after.toString(), expectedFormattedOutput,
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"Mutating array returned from getter changed internals of ChoiceFormat");
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}
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/*
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* Ensure that mutating the arrays passed to setChoices/constructor does
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* not affect the internal representation of the ChoiceFormat.
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*/
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@Test
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public void immutableArraysFromSetter() {
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// Modify the array passed to setFormats() -> dayOfWeekNames
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originalSetterArray[6] = "Saturday";
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StringBuilder after = new StringBuilder();
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for (double i = 1.0; i <= 7.0; ++i) {
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status.setIndex(0);
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String s = cFmt.format(i);
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after.append(" ");
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after.append(s);
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after.append(cFmt.parse(cFmt.format(i), status));
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}
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// Compare the expected results with the new formatted results
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assertEquals(after.toString(), expectedFormattedOutput,
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"Mutating array passed to setter changed internals of ChoiceFormat");
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}
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}
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