210 lines
8.4 KiB
Java
210 lines
8.4 KiB
Java
/*
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* Copyright (c) 2004, 2021, 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 4992173 4992170
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* @library /test/lib
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* @modules jdk.compiler
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* @run testng/othervm EnclosingClassTest
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* @summary Check getEnclosingClass and other methods
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* @author Peter von der Ah\u00e9
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*/
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import java.io.BufferedReader;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import common.TestMe;
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import jdk.test.lib.compiler.CompilerUtils;
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import jdk.test.lib.util.FileUtils;
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import org.testng.Assert;
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import org.testng.annotations.BeforeClass;
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import org.testng.annotations.Test;
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/*
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* We have five kinds of classes:
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* a) Top level classes
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* b) Nested classes (static member classes)
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* c) Inner classes (non-static member classes)
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* d) Local classes (named classes declared within a method)
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* e) Anonymous classes
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*
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* Each one can be within a package or not.
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* Kinds b-e can/must be within kinds a-e.
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* This gives us a three dimensional space:
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* 1. dimension: b-e
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* 2. dimension: a-e
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* 3. dimension: packages
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*
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* We make a two dimensional matrix of (b-e)x(a-e) and change the
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* package configuration on that:
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*
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* b c d e
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* a x x x x
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* b x x x x
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* c o x x x where o means "not legal"
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* d o x x x
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* e o x x x
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*/
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public class EnclosingClassTest {
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private static final String SRC_DIR = System.getProperty("test.src");
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private static final Path ENCLOSING_CLASS_SRC = Path.of(SRC_DIR, "EnclosingClass.java");
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private static final String GEN_SRC_DIR = "gensrc";
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@BeforeClass
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public void createEnclosingClasses() throws IOException {
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Path pkg1Dir = Path.of(GEN_SRC_DIR, "pkg1");
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Path pkg2Dir = Path.of(GEN_SRC_DIR, "pkg1", "pkg2");
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Path pkg1File = pkg1Dir.resolve("EnclosingClass.java");
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Path pkg2File = pkg2Dir.resolve("EnclosingClass.java");
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if (!Files.notExists(pkg1Dir)) {
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FileUtils.deleteFileTreeWithRetry(pkg1Dir);
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}
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Files.createDirectories(pkg2Dir);
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createAndWriteEnclosingClasses(ENCLOSING_CLASS_SRC, pkg1File, "pkg1");
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createAndWriteEnclosingClasses(ENCLOSING_CLASS_SRC, pkg2File, "pkg1.pkg2");
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Assert.assertTrue(CompilerUtils.compile(ENCLOSING_CLASS_SRC, Path.of(System.getProperty("test.classes")),
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"--source-path", SRC_DIR));
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Assert.assertTrue(CompilerUtils.compile(pkg1File, Path.of(System.getProperty("test.classes")),
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"-classpath", System.getProperty("test.class.path")));
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Assert.assertTrue(CompilerUtils.compile(pkg2File, Path.of(System.getProperty("test.classes")),
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"-classpath", System.getProperty("test.class.path")));
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}
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@Test
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public void testEnclosingClasses() throws ClassNotFoundException, NoSuchMethodException, IllegalAccessException,
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InvocationTargetException, InstantiationException {
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test(Class.forName("EnclosingClass").getDeclaredConstructor().newInstance());
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}
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@Test
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public void testEnclosingClassesInPackage() throws ClassNotFoundException, NoSuchMethodException,
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IllegalAccessException, InvocationTargetException, InstantiationException {
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test(Class.forName("pkg1.EnclosingClass").getDeclaredConstructor().newInstance());
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}
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@Test
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public void testEnclosingClassesInNestedPackage() throws ClassNotFoundException, NoSuchMethodException,
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IllegalAccessException, InvocationTargetException, InstantiationException {
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test(Class.forName("pkg1.pkg2.EnclosingClass").getDeclaredConstructor().newInstance());
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}
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private void createAndWriteEnclosingClasses(Path source, Path target, String packageName) throws IOException {
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String className = packageName + ".EnclosingClass";
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try (BufferedReader br = new BufferedReader(new FileReader(source.toFile()));
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PrintWriter bw = new PrintWriter(new FileWriter(target.toFile()))) {
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String line;
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while ((line = br.readLine()) != null) {
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if (line.contains("canonical=\"EnclosingClass")) {
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line = line.replaceAll("canonical=\"EnclosingClass", "canonical=\"" + className);
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} else if (line.contains("\"class EnclosingClass")) {
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line = line.replaceAll("\"class EnclosingClass", "\"class " + className);
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} else if (line.contains("//package")) {
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line = line.replaceAll("//package", "package " + packageName + ";");
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}
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bw.println(line);
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}
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}
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}
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private void info(Class<?> c, Class<?> encClass, String desc) {
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if (!"".equals(desc)) {
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System.out.println(desc + ":");
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}
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System.out.println(c);
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System.out.println("\tis enclosed by:\t\t" + encClass);
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System.out.println("\thas simple name:\t`" +
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c.getSimpleName() + "'");
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System.out.println("\thas canonical name:\t`" +
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c.getCanonicalName() + "'");
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}
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private void match(String actual, String expected) {
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Assert.assertTrue((actual == null && expected == null) || actual.equals(expected));
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System.out.println("\t`" +
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actual + "' matches expected `" +
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expected + "'");
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}
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private void check(Class<?> c, Class<?> enc,
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String encName, String encNameExpected,
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String simpleName, String simpleNameExpected,
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String canonicalName, String canonicalNameExpected) {
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match(encName, encNameExpected);
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match(simpleName, simpleNameExpected);
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match(canonicalName, canonicalNameExpected);
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}
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private void testClass(Class<?> c, TestMe annotation, Field f) {
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if (Void.class.equals(c))
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return;
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Class<?> encClass = c.getEnclosingClass();
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c.getEnclosingMethod(); // make sure it does not crash
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c.getEnclosingConstructor(); // make sure it does not crash
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info(c, encClass, annotation.desc());
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check(c, encClass,
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""+encClass, annotation.encl(),
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c.getSimpleName(), annotation.simple(),
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c.getCanonicalName(),
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annotation.hasCanonical() ? annotation.canonical() : null);
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if (void.class.equals(c))
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return;
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Class<?> array = java.lang.reflect.Array.newInstance(c, 0).getClass();
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check(array, array.getEnclosingClass(),
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"", "",
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array.getSimpleName(), annotation.simple()+"[]",
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array.getCanonicalName(),
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annotation.hasCanonical() ? annotation.canonical()+"[]" : null);
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}
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private void test(Object tests) {
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for (Field f : tests.getClass().getFields()) {
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TestMe annotation = f.getAnnotation(TestMe.class);
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if (annotation != null) {
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try {
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testClass((Class<?>)f.get(tests), annotation, f);
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} catch (AssertionError ex) {
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System.err.println("Error in " +
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tests.getClass().getName() +
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"." + f.getName());
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throw ex;
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} catch (IllegalAccessException ex) {
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ex.printStackTrace();
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throw new RuntimeException(ex);
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}
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}
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}
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}
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}
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