jdk

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TestPkgInfo.java 
206 строк · 6.8 Кб
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/*
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 * Copyright (c) 2010, 2015, 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 6960424 8022161
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 * @summary new option -Xpkginfo for better control of when package-info.class
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 *          is generated, also ensures no failures if package-info.java is
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 *          not available.
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 * @modules jdk.compiler
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 */
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import java.io.*;
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import java.util.*;
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public class TestPkgInfo {
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    enum OptKind {
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        NONE(null),
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        ALWAYS("-Xpkginfo:always"),
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        NONEMPTY("-Xpkginfo:nonempty"),
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        LEGACY("-Xpkginfo:legacy");
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        OptKind(String opt) { this.opt = opt; }
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        final String opt;
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    };
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    public static void main(String... args) throws Exception {
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        new TestPkgInfo().run(args);
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    }
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    public void run(String... args) throws Exception {
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        testPositive();
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        testNoExceptions();
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    }
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    public void testPositive(String... args) throws Exception {
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        boolean[] booleanValues = { false, true };
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        for (OptKind ok: OptKind.values()) {
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            for (boolean sr: booleanValues) {
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                for (boolean cr: booleanValues) {
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                    for (boolean rr: booleanValues) {
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                        try {
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                            test(ok, sr, cr, rr);
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                        } catch (Exception e) {
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                            error("Exception: " + e);
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                        }
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                        if (errors > 0) throw new AssertionError();
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                    }
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                }
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            }
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        }
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        if (errors > 0)
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            throw new Exception(errors + " errors occurred");
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    }
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    /** this should throw no exceptions **/
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    void testNoExceptions() throws Exception {
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        count++;
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        System.err.println("Test " + count + ": ALWAYS nofile");
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        StringBuilder sb = new StringBuilder();
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        sb.append("package test; class Hello{}");
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        // test specific tmp directory
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        File tmpDir = new File("tmp.test" + count);
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        File classesDir = new File(tmpDir, "classes");
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        classesDir.mkdirs();
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        File javafile = new File(new File(tmpDir, "src"), "Hello.java");
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        writeFile(javafile, sb.toString());
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        // build up list of options and files to be compiled
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        List<String> opts = new ArrayList<>();
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        List<File> files = new ArrayList<>();
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        opts.add("-d");
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        opts.add(classesDir.getPath());
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        opts.add("-Xpkginfo:always");
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        files.add(javafile);
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        compile(opts, files);
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    }
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    void test(OptKind ok, boolean sr, boolean cr, boolean rr) throws Exception {
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        count++;
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        System.err.println("Test " + count + ": ok:" + ok + " sr:" + sr + " cr:" + cr + " rr:" + rr);
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        StringBuilder sb = new StringBuilder();
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        // create annotated package statement with all combinations of retention policy
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        if (sr) sb.append("@SR\n");
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        if (cr) sb.append("@CR\n");
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        if (rr) sb.append("@RR\n");
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        sb.append("package p;\n");
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        sb.append("\n");
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        sb.append("import java.lang.annotation.*;\n");
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        sb.append("@Retention(RetentionPolicy.SOURCE)  @interface SR { }\n");
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        sb.append("@Retention(RetentionPolicy.CLASS)   @interface CR { }\n");
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        sb.append("@Retention(RetentionPolicy.RUNTIME) @interface RR { }\n");
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        // test specific tmp directory
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        File tmpDir = new File("tmp.test" + count);
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        File classesDir = new File(tmpDir, "classes");
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        classesDir.mkdirs();
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        File pkginfo_java = new File(new File(tmpDir, "src"), "package-info.java");
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        writeFile(pkginfo_java, sb.toString());
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        // build up list of options and files to be compiled
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        List<String> opts = new ArrayList<>();
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        List<File> files = new ArrayList<>();
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        opts.add("-d");
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        opts.add(classesDir.getPath());
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        if (ok.opt != null)
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            opts.add(ok.opt);
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        //opts.add("-verbose");
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            files.add(pkginfo_java);
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        compile(opts, files);
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        File pkginfo_class = new File(new File(classesDir, "p"), "package-info.class");
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        boolean exists = pkginfo_class.exists();
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        boolean expected;
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        switch (ok) {
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            case ALWAYS:
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                expected = true;
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                break;
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            case LEGACY:
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            case NONE:
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                expected = (sr || cr || rr ); // any annotation
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                break;
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            case NONEMPTY:
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                expected = (cr || rr ); // any annotation in class file
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                break;
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            default:
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                throw new IllegalStateException();
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        }
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        if (exists && !expected)
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            error("package-info.class found but not expected");
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        if (!exists && expected)
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            error("package-info.class expected but not found");
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    }
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    /** Compile files with options provided. */
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    void compile(List<String> opts, List<File> files) throws Exception {
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        System.err.println("javac: " + opts + " " + files);
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        List<String> args = new ArrayList<>();
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        args.addAll(opts);
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        for (File f: files)
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            args.add(f.getPath());
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        StringWriter sw = new StringWriter();
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        PrintWriter pw = new PrintWriter(sw);
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        int rc = com.sun.tools.javac.Main.compile(args.toArray(new String[args.size()]), pw);
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        pw.flush();
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        if (sw.getBuffer().length() > 0)
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            System.err.println(sw.toString());
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        if (rc != 0)
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            throw new Exception("compilation failed: rc=" + rc);
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    }
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    /** Write a file with a given body. */
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    void writeFile(File f, String body) throws Exception {
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        if (f.getParentFile() != null)
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            f.getParentFile().mkdirs();
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        Writer out = new FileWriter(f);
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        try {
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            out.write(body);
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        } finally {
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            out.close();
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        }
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    }
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    /** Report an error. */
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    void error(String msg) {
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        System.err.println("Error: " + msg);
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        errors++;
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    }
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    /** Test case counter. */
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    int count;
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    /** Number of errors found. */
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    int errors;
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}
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