104 lines
3.5 KiB
Java
104 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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* @summary Test Class.forPrimitiveName
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* @bug 6361826
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*/
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import java.util.*;
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public class ForPrimitiveName {
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public static void main(String... args) {
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positiveTests();
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negativeTests();
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}
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private static final void positiveTests() {
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/**
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* immutable table mapping primitive type names to corresponding
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* class objects
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*/
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final Map<String, Class<?>> primClasses =
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Map.of("boolean", boolean.class,
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"byte", byte.class,
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"char", char.class,
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"short", short.class,
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"int", int.class,
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"long", long.class,
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"float", float.class,
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"double", double.class,
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"void", void.class);
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for (var entry : primClasses.entrySet()) {
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String key = entry.getKey();
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Class<?> expected = entry.getValue();
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Class<?> result = Class.forPrimitiveName(key);
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// For java.lang.Class, equality is identity.
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if (result != expected) {
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throw new RuntimeException("Unexpected mapping for " + key);
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}
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}
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}
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private static final void negativeTests() {
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final List<String> expectedNull =
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List.of("java.lang.Object",
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"java.lang.String",
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// descriptor string names for primitive types
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"Z", // boolean
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"B", // byte
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"C", // char
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"D", // double
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"F", // float
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"I", // int
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"L", // long
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"S", // short
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"V", // void
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// Wrapper classes
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"java.lang.Byte",
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"java.lang.Boolean",
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"java.lang.Character",
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"java.lang.Short",
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"java.lang.Integer",
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"java.lang.Long",
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"java.lang.Float",
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"java.lang.Double",
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"java.lang.Void");
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for (var entry : expectedNull) {
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Class<?> result = Class.forPrimitiveName(entry);
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if (result != null ) {
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throw new RuntimeException("Unexpected nonnull result for " +
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entry);
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}
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}
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}
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}
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