1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/MethodParameters/Tester.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,202 @@
1.4 +/*
1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +import java.io.*;
1.28 +import java.lang.reflect.Constructor;
1.29 +import java.nio.charset.StandardCharsets;
1.30 +import java.nio.file.Files;
1.31 +import java.util.ArrayList;
1.32 +import java.util.Arrays;
1.33 +import java.util.List;
1.34 +
1.35 +/**
1.36 + * Test driver for MethodParameters testing.
1.37 + * <p>
1.38 + * The intended use of this driver is to run it, giving the name of
1.39 + * a single class compiled with -parameters as argument. The driver
1.40 + * will test the specified class, and any nested classes it finds.
1.41 + * <p>
1.42 + * Each class is tested in two way. By refelction, and by directly
1.43 + * checking MethodParameters attributes in the classfile. The checking
1.44 + * is done using two visitor classes {@link ClassFileVisitor} and
1.45 + * {@link ReflectionVisitor}.
1.46 + * <p>
1.47 + * The {@code ReflectionVisitor} test logically belongs with library tests.
1.48 + * we wish to reuse the same test-cases, so both test are committed together,
1.49 + * under langtools. The tests, may be duplicated in the jdk repository.
1.50 + */
1.51 +public class Tester {
1.52 +
1.53 + final static File classesdir = new File(System.getProperty("test.classes", "."));
1.54 +
1.55 + private String classname;
1.56 + private File[] files;
1.57 + private File refFile;
1.58 + private int errors;
1.59 + private int warnings;
1.60 + private int diffGolden;
1.61 +
1.62 + /**
1.63 + * The visitor classes that does the actual checking are referenced
1.64 + * statically, to force compilations, without having to reference
1.65 + * them in individual test cases.
1.66 + * <p>
1.67 + * This makes it easy to change the set of visitors, without
1.68 + * complicating the design with dynamic discovery and compilation
1.69 + * of visitor classes.
1.70 + */
1.71 + static final Class visitors[] = {
1.72 + ClassFileVisitor.class,
1.73 + ReflectionVisitor.class
1.74 + };
1.75 +
1.76 + /**
1.77 + * Test-driver expect a single classname as argument.
1.78 + */
1.79 + public static void main(String... args) throws Exception {
1.80 + if (args.length != 2) {
1.81 + throw new Error("A single class name and a golden file are expected as argument");
1.82 + }
1.83 + String testSrc = System.getProperty("test.src");
1.84 + String testName = args[0];
1.85 + String testGoldenFile = args[1];
1.86 + final String pattern = testName + ".*\\.class";
1.87 + File refFile = new File(testSrc, testGoldenFile);
1.88 + File[] files = classesdir.listFiles(new FileFilter() {
1.89 + public boolean accept(File f) {
1.90 + return f.getName().matches(pattern);
1.91 + }
1.92 + });
1.93 + if (files.length == 0) {
1.94 + File file = new File(classesdir, testName + ".class");
1.95 + throw new Error(file.getPath() + " not found");
1.96 + }
1.97 +
1.98 + new Tester(testName, files, refFile).run();
1.99 + }
1.100 +
1.101 + public Tester(String name, File[] files, File refFile) {
1.102 + this.classname = name;
1.103 + this.files = files;
1.104 + this.refFile = refFile;
1.105 + }
1.106 +
1.107 + void run() throws Exception {
1.108 +
1.109 + // Test with each visitor
1.110 + for (Class<Visitor> vclass : visitors) {
1.111 + boolean compResult = false;
1.112 + try {
1.113 + String vname = vclass.getName();
1.114 + Constructor c = vclass.getConstructor(Tester.class);
1.115 +
1.116 + info("\nRun " + vname + " for " + classname + "\n");
1.117 + StringBuilder sb = new StringBuilder();
1.118 + for (File f : files) {
1.119 + String fname = f.getName();
1.120 + fname = fname.substring(0, fname.length() - 6);
1.121 + Visitor v = (Visitor) c.newInstance(this);
1.122 + try {
1.123 + v.visitClass(fname, f, sb);
1.124 + } catch(Exception e) {
1.125 + error("Uncaught exception in visitClass()");
1.126 + e.printStackTrace();
1.127 + }
1.128 + }
1.129 + String output = sb.toString();
1.130 + info(output);
1.131 + compResult = compareOutput(refFile, output);
1.132 + } catch(ReflectiveOperationException e) {
1.133 + warn("Class " + vclass.getName() + " ignored, not a Visitor");
1.134 + continue;
1.135 + }
1.136 + if (!compResult) {
1.137 + diffGolden++;
1.138 + error("The output from " + vclass.getName() + " did not match golden file.");
1.139 + }
1.140 + }
1.141 +
1.142 + if (0 != diffGolden)
1.143 + throw new Exception("Test output is not equal with golden file.");
1.144 +
1.145 + if(0 != warnings)
1.146 + System.err.println("Test generated " + warnings + " warnings");
1.147 +
1.148 + if(0 != errors)
1.149 + throw new Exception("Tester test failed with " +
1.150 + errors + " errors");
1.151 + }
1.152 + // Check if test output matches the golden file.
1.153 + boolean compareOutput(File refFile, String sb)
1.154 + throws FileNotFoundException, IOException {
1.155 +
1.156 + List<String> refFileList = Files.readAllLines(refFile.toPath(), StandardCharsets.UTF_8);
1.157 + List<String> sbList = Arrays.asList(sb.split("[\r\n]+"));
1.158 + // Check if test output contains unexpected lines or is missing expected lines.
1.159 + List<String> sbOnly = new ArrayList<>(sbList);
1.160 + sbOnly.removeAll(refFileList);
1.161 + for (String line: sbOnly)
1.162 + error("unexpected line found: " + line);
1.163 +
1.164 + List<String> refOnly = new ArrayList<>(refFileList);
1.165 + refOnly.removeAll(sbList);
1.166 + for (String line: refOnly)
1.167 + error("expected line not found: " + line);
1.168 +
1.169 + return sbOnly.isEmpty() && refOnly.isEmpty();
1.170 + }
1.171 +
1.172 + abstract static class Visitor {
1.173 + Tester tester;
1.174 + File classesdir;
1.175 +
1.176 + public Visitor(Tester tester) {
1.177 + this.tester = tester;
1.178 + }
1.179 +
1.180 + abstract void visitClass(final String classname, final File cfile,
1.181 + final StringBuilder sb) throws Exception;
1.182 +
1.183 + public void error(String msg) {
1.184 + tester.error(msg);
1.185 + }
1.186 +
1.187 + public void warn(String msg) {
1.188 + tester.warn(msg);
1.189 + }
1.190 + }
1.191 +
1.192 + void error(String msg) {
1.193 + System.err.println("Error: " + msg);
1.194 + errors++;
1.195 + }
1.196 +
1.197 + void warn(String msg) {
1.198 + System.err.println("Warning: " + msg);
1.199 + warnings++;
1.200 + }
1.201 +
1.202 + void info(String msg) {
1.203 + System.out.println(msg);
1.204 + }
1.205 +}
