127 lines
4.6 KiB
Java
127 lines
4.6 KiB
Java
/*
|
|
* Copyright (c) 2007, 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.
|
|
*/
|
|
|
|
/*
|
|
* @test
|
|
* @bug 6312358
|
|
* @summary Verify that an NPE is thrown by invoking Locale.getInstance() with
|
|
* any argument being null.
|
|
* @modules java.base/java.util:open
|
|
* @run junit GetInstanceCheck
|
|
*/
|
|
|
|
import java.lang.reflect.InvocationTargetException;
|
|
import java.lang.reflect.Method;
|
|
import java.util.Locale;
|
|
import java.util.stream.Stream;
|
|
|
|
import org.junit.jupiter.api.BeforeAll;
|
|
import org.junit.jupiter.params.ParameterizedTest;
|
|
import org.junit.jupiter.params.provider.Arguments;
|
|
import org.junit.jupiter.params.provider.MethodSource;
|
|
|
|
import static org.junit.jupiter.api.Assertions.fail;
|
|
|
|
public class GetInstanceCheck {
|
|
|
|
static Method getInstanceMethod;
|
|
static final String NAME = "getInstance";
|
|
|
|
/**
|
|
* Initialize the non-public Locale.getInstance() method.
|
|
*/
|
|
@BeforeAll
|
|
static void initializeMethod() {
|
|
try {
|
|
// Locale.getInstance is not directly accessible.
|
|
getInstanceMethod = Locale.class.getDeclaredMethod(
|
|
NAME, String.class, String.class, String.class
|
|
);
|
|
getInstanceMethod.setAccessible(true);
|
|
} catch (java.lang.NoSuchMethodException exc) {
|
|
// The test should fail if we can not test the desired method
|
|
fail(String.format("Tried to get the method '%s' which was not found," +
|
|
" further testing is not possible, failing test", NAME));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Exists as sanity check that Locale.getInstance() will not throw
|
|
* an NPE if no arguments are null.
|
|
*/
|
|
@ParameterizedTest
|
|
@MethodSource("passingArguments")
|
|
public void noNPETest(String language, String country, String variant)
|
|
throws IllegalAccessException {
|
|
try {
|
|
getInstanceMethod.invoke(null, language, country, variant);
|
|
} catch (InvocationTargetException exc) {
|
|
// Determine underlying exception
|
|
Throwable cause = exc.getCause();
|
|
if (exc.getCause() instanceof NullPointerException) {
|
|
fail(String.format("%s should not be thrown when no args are null", cause));
|
|
} else {
|
|
fail(String.format("%s unexpectedly thrown, when no exception should be thrown", cause));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Make sure the Locale.getInstance() method throws an NPE
|
|
* if any given argument is null.
|
|
*/
|
|
@ParameterizedTest
|
|
@MethodSource("failingArguments")
|
|
public void throwNPETest(String language, String country, String variant)
|
|
throws IllegalAccessException {
|
|
try {
|
|
getInstanceMethod.invoke(null, language, country, variant);
|
|
fail("Should NPE with any argument set to null");
|
|
} catch (InvocationTargetException exc) {
|
|
// Determine underlying exception
|
|
Throwable cause = exc.getCause();
|
|
if (cause instanceof NullPointerException) {
|
|
System.out.println("NPE successfully thrown");
|
|
} else {
|
|
fail(cause + " is thrown, when NPE should have been thrown");
|
|
}
|
|
}
|
|
}
|
|
|
|
private static Stream<Arguments> passingArguments() {
|
|
return Stream.of(
|
|
Arguments.of("null", "GB", ""),
|
|
Arguments.of("en", "null", ""),
|
|
Arguments.of("en", "GB", "null")
|
|
);
|
|
}
|
|
|
|
private static Stream<Arguments> failingArguments() {
|
|
return Stream.of(
|
|
Arguments.of(null, "GB", ""),
|
|
Arguments.of("en", null, ""),
|
|
Arguments.of("en", "GB", null)
|
|
);
|
|
}
|
|
}
|