jdk-24/test/jdk/java/text/Format/DateFormat/ToStringTest.java
Justin Lu 96607df7f0 8321545: Override toString() for Format subclasses
Reviewed-by: naoto, rriggs
2024-01-23 22:22:16 +00:00

83 lines
3.1 KiB
Java

/*
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* 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
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*
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* 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
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*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
* @test
* @bug 8321545
* @library /java/text/testlib
* @summary Ensure value returned by overridden toString method is as expected
* @run junit ToStringTest
*/
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.text.DateFormat;
import java.text.DateFormatSymbols;
import java.text.SimpleDateFormat;
import java.util.Locale;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class ToStringTest {
// Check a normal expected value
@Test
public void normalValueTest() {
String expectedStr =
"SimpleDateFormat [locale: \"English (Canada)\", pattern: \"MMM d, y\"]\n";
var s = DateFormat.getDateInstance(DateFormat.DEFAULT, Locale.CANADA);
assertEquals(expectedStr, s.toString());
}
// Check an odd value. SimpleDateFormat constructor that takes DFS, will use
// the default locale, not the locale from the DFS.
@Test
public void oddValueTest() {
String expectedStr =
"SimpleDateFormat [locale: \"" + Locale.getDefault().getDisplayName() + "\", pattern: \"MMM d, y\"]\n";
var s = new SimpleDateFormat("MMM d, y", new DateFormatSymbols(Locale.JAPAN));
assertEquals(expectedStr, s.toString());
}
// Check the expected value when the locale is null. This is only possible
// via an older SimpleDateFormat that was deserialized. The current constructor
// will throw NPE if locale is null.
@Test
public void nullLocaleTest() {
String expectedStr =
"SimpleDateFormat [locale: null, pattern: \"yyyy.MM.dd E hh.mm.ss zzz\"]\n";
// Borrowed from DateFormatSymbolsSerializationTest
SimpleDateFormat s;
try (InputStream is = HexDumpReader.getStreamFromHexDump("SDFserialized.ser.txt");
ObjectInputStream iStream = new ObjectInputStream(is)) {
s = (SimpleDateFormat)iStream.readObject();
assertEquals(expectedStr, s.toString());
} catch (Exception e) {
System.out.println("Error building stream from deserialized simple date format");
}
}
}