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66 lines
3.6 KiB
Java
66 lines
3.6 KiB
Java
/*
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* Copyright (c) 2025, 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 8371953
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* @summary Check null argument behaviors for java.lang.Class APIs.
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* @run junit NullBehaviorTest
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*/
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.*;
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class NullBehaviorTest {
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@Test
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void nullChecks() {
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assertThrows(NullPointerException.class, () -> Class.forName(null));
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assertDoesNotThrow(() -> Class.forName("java.lang.Object", false, null));
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assertThrows(NullPointerException.class, () -> Class.forName(null, false, null));
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assertThrows(NullPointerException.class, () -> Class.forName(null, "java.lang.Object"));
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assertThrows(NullPointerException.class, () -> Class.forName(Object.class.getModule(), null));
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assertThrows(NullPointerException.class, () -> Class.forPrimitiveName(null));
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assertFalse(Object.class.isInstance(null));
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assertThrows(NullPointerException.class, () -> Object.class.isAssignableFrom(null));
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assertThrows(NullPointerException.class, () -> Object.class.getField(null));
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assertThrows(NullPointerException.class, () -> Object.class.getDeclaredField(null));
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assertThrows(NullPointerException.class, () -> Object.class.getMethod(null));
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assertThrows(NullPointerException.class, () -> Object.class.getDeclaredMethod(null));
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assertDoesNotThrow(() -> Object.class.getMethod("hashCode", (Class<?>[]) null));
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assertDoesNotThrow(() -> Object.class.getDeclaredMethod("hashCode", (Class<?>[]) null));
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assertThrows(NoSuchMethodException.class, () -> Object.class.getMethod("hashCode", new Class[]{null}));
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assertThrows(NoSuchMethodException.class, () -> Object.class.getDeclaredMethod("hashCode", new Class[]{null}));
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assertDoesNotThrow(() -> Object.class.getConstructor((Class<?>[]) null));
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assertDoesNotThrow(() -> Object.class.getDeclaredConstructor((Class<?>[]) null));
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assertThrows(NoSuchMethodException.class, () -> Object.class.getConstructor(new Class[]{null}));
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assertThrows(NoSuchMethodException.class, () -> Object.class.getDeclaredConstructor(new Class[]{null}));
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assertThrows(NullPointerException.class, () -> Object.class.getResourceAsStream(null));
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assertThrows(NullPointerException.class, () -> Object.class.getResource(null));
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assertDoesNotThrow(() -> Object.class.cast(null));
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assertThrows(NullPointerException.class, () -> Object.class.asSubclass(null));
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assertThrows(NullPointerException.class, () -> Object.class.isNestmateOf(null));
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assertThrows(NullPointerException.class, () -> int.class.isNestmateOf(null));
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}
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}
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