/*
* Copyright ( c ) 2016 , 2019 , 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
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* questions .
*/
/*
* @ test
* @ bug 8159855
* @ summary test ToolProvider SPI
* @ run main / othervm - Djava . security . manager = allow ToolProviderTest
*/
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.spi.ToolProvider;
public class ToolProviderTest {
public static void main(String... args) throws Exception {
ToolProviderTest t = new ToolProviderTest();
t.run();
}
void run() throws Exception {
initServices();
System.out.println("Validate an NPE is thrown with null arguments" );
testNullArgs();
System.out.println("test without security manager present:" );
test();
System.setSecurityManager(new SecurityManager());
System.out.println("test with security manager present:" );
test();
}
private void test() throws Exception {
ToolProvider testProvider = ToolProvider.findFirst("test" ).get();
int rc = testProvider.run(System.out, System.err, "hello test" );
if (rc != 0 ) {
throw new Exception("unexpected exit code: " + rc);
}
}
private void testNullArgs() {
ToolProvider testProvider = ToolProvider.findFirst("test" ).get();
// out null check
expectNullPointerException(() -> testProvider.run(null , System.err));
// err null check
expectNullPointerException(() -> testProvider.run(System.out, null ));
// args array null check
expectNullPointerException(() ->
testProvider.run(System.out, System.err, (String[]) null ));
// args array elements null check
expectNullPointerException(() ->
testProvider.run(System.out, System.err, (String) null ));
}
private static void expectNullPointerException(Runnable test) {
try {
test.run();
throw new Error("NullPointerException not thrown" );
} catch (NullPointerException e) {
// expected
}
}
private void initServices() throws IOException {
Path testClasses = Paths.get(System.getProperty("test.classes" ));
Path services = testClasses.resolve(Paths.get("META-INF" , "services" ));
Files.createDirectories(services);
Files.write(services.resolve(ToolProvider.class .getName()),
Arrays.asList(TestProvider.class .getName()));
}
public static class TestProvider implements ToolProvider {
public TestProvider() {
checkPrivileges();
}
public String name() {
return "test" ;
}
public int run(PrintWriter out, PrintWriter err, String... args) {
out.println("Test: " + Arrays.toString(args));
return 0 ;
}
private void checkPrivileges() {
boolean haveSecurityManager = (System.getSecurityManager() != null );
try {
// validate appropriate privileges by checking access to a
// system property
System.getProperty("java.home" );
if (haveSecurityManager) {
throw new Error("exception not thrown" );
}
} catch (SecurityException e) {
if (!haveSecurityManager) {
throw new Error("unexpected exception: " + e);
}
}
}
}
}
Messung V0.5 in Prozent C=93 H=90 G=91
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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