94 lines
3.5 KiB
Java
94 lines
3.5 KiB
Java
/*
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* Copyright (c) 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 8310242
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* @run junit ForNameNames
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* @summary Verify class names for Class.forName
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*/
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import java.util.stream.Stream;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.Arguments;
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import org.junit.jupiter.params.provider.MethodSource;
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import static org.junit.jupiter.api.Assertions.*;
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public class ForNameNames {
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static class Inner {}
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static Stream<Arguments> testCases() {
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return Stream.of(
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Arguments.of("java.lang.String", String.class),
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Arguments.of("[Ljava.lang.String;", String[].class),
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Arguments.of("ForNameNames$Inner", Inner.class),
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Arguments.of("[LForNameNames$Inner;", Inner[].class),
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Arguments.of("[[I", int[][].class)
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);
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}
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/*
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* Test 1-arg and 3-arg Class::forName. Class::getName on the returned
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* Class object returns the name passed to Class::forName.
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*/
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@ParameterizedTest
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@MethodSource("testCases")
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void testForName(String cn, Class<?> expected) throws ClassNotFoundException {
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ClassLoader loader = ForNameNames.class.getClassLoader();
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Class<?> c1 = Class.forName(cn, false, loader);
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assertEquals(expected, c1);
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assertEquals(cn, c1.getName());
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Class<?> c2 = Class.forName(cn);
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assertEquals(expected, c2);
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assertEquals(cn, c2.getName());
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}
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static Stream<Arguments> invalidNames() {
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return Stream.of(
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Arguments.of("I"), // primitive type
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Arguments.of("int[]"), // fully-qualified name of int array
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Arguments.of("ForNameNames.Inner"), // fully-qualified name of nested type
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Arguments.of("[java.lang.String"), // missing L and ;
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Arguments.of("[Ljava.lang.String"), // missing ;
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Arguments.of("[Ljava/lang/String;") // type descriptor
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);
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}
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@ParameterizedTest
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@MethodSource("invalidNames")
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void testInvalidNames(String cn) {
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ClassLoader loader = ForNameNames.class.getClassLoader();
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assertThrows(ClassNotFoundException.class, () -> Class.forName(cn, false, loader));
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}
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@Test
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void testModule() {
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// Class.forName(Module, String) does not allow class name for array types
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Class<?> c = Class.forName(Object.class.getModule(), "[Ljava.lang.String;");
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assertNull(c);
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}
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}
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