| /* |
| * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.*; |
| import java.lang.reflect.Constructor; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.Files; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * Test driver for MethodParameters testing. |
| * <p> |
| * The intended use of this driver is to run it, giving the name of |
| * a single class compiled with -parameters as argument. The driver |
| * will test the specified class, and any nested classes it finds. |
| * <p> |
| * Each class is tested in two way. By refelction, and by directly |
| * checking MethodParameters attributes in the classfile. The checking |
| * is done using two visitor classes {@link ClassFileVisitor} and |
| * {@link ReflectionVisitor}. |
| * <p> |
| * The {@code ReflectionVisitor} test logically belongs with library tests. |
| * we wish to reuse the same test-cases, so both test are committed together, |
| * under langtools. The tests, may be duplicated in the jdk repository. |
| */ |
| public class MethodParametersTester { |
| |
| final static File classesdir = new File(System.getProperty("test.classes", ".")); |
| |
| private String classname; |
| private File[] files; |
| private File refFile; |
| private int errors; |
| private int warnings; |
| private int diffGolden; |
| |
| /** |
| * The visitor classes that does the actual checking are referenced |
| * statically, to force compilations, without having to reference |
| * them in individual test cases. |
| * <p> |
| * This makes it easy to change the set of visitors, without |
| * complicating the design with dynamic discovery and compilation |
| * of visitor classes. |
| */ |
| static final Class visitors[] = { |
| ClassFileVisitor.class, |
| ReflectionVisitor.class |
| }; |
| |
| /** |
| * Test-driver expect a single classname as argument. |
| */ |
| public static void main(String... args) throws Exception { |
| if (args.length != 2) { |
| throw new Error("A single class name and a golden file are expected as argument"); |
| } |
| String testSrc = System.getProperty("test.src"); |
| String testName = args[0]; |
| String testGoldenFile = args[1]; |
| final String pattern = testName + ".*\\.class"; |
| File refFile = new File(testSrc, testGoldenFile); |
| File[] files = classesdir.listFiles(new FileFilter() { |
| public boolean accept(File f) { |
| return f.getName().matches(pattern); |
| } |
| }); |
| if (files.length == 0) { |
| File file = new File(classesdir, testName + ".class"); |
| throw new Error(file.getPath() + " not found"); |
| } |
| |
| new MethodParametersTester(testName, files, refFile).run(); |
| } |
| |
| public MethodParametersTester(String name, File[] files, File refFile) { |
| this.classname = name; |
| this.files = files; |
| this.refFile = refFile; |
| } |
| |
| void run() throws Exception { |
| |
| // Test with each visitor |
| for (Class<Visitor> vclass : visitors) { |
| boolean compResult = false; |
| try { |
| String vname = vclass.getName(); |
| Constructor c = vclass.getConstructor(MethodParametersTester.class); |
| |
| info("\nRun " + vname + " for " + classname + "\n"); |
| StringBuilder sb = new StringBuilder(); |
| for (File f : files) { |
| String fname = f.getName(); |
| fname = fname.substring(0, fname.length() - 6); |
| Visitor v = (Visitor) c.newInstance(this); |
| try { |
| v.visitClass(fname, f, sb); |
| } catch(Exception e) { |
| error("Uncaught exception in visitClass()"); |
| e.printStackTrace(); |
| } |
| } |
| String output = sb.toString(); |
| info(output); |
| compResult = compareOutput(refFile, output); |
| } catch(ReflectiveOperationException e) { |
| warn("Class " + vclass.getName() + " ignored, not a Visitor"); |
| continue; |
| } |
| if (!compResult) { |
| diffGolden++; |
| error("The output from " + vclass.getName() + " did not match golden file."); |
| } |
| } |
| |
| if (0 != diffGolden) |
| throw new Exception("Test output is not equal with golden file."); |
| |
| if(0 != warnings) |
| System.err.println("Test generated " + warnings + " warnings"); |
| |
| if(0 != errors) |
| throw new Exception("Tester test failed with " + |
| errors + " errors"); |
| } |
| // Check if test output matches the golden file. |
| boolean compareOutput(File refFile, String sb) |
| throws FileNotFoundException, IOException { |
| |
| List<String> refFileList = Files.readAllLines(refFile.toPath(), StandardCharsets.UTF_8); |
| List<String> sbList = Arrays.asList(sb.split("[\r\n]+")); |
| // Check if test output contains unexpected lines or is missing expected lines. |
| List<String> sbOnly = new ArrayList<>(sbList); |
| sbOnly.removeAll(refFileList); |
| for (String line: sbOnly) |
| error("unexpected line found: " + line); |
| |
| List<String> refOnly = new ArrayList<>(refFileList); |
| refOnly.removeAll(sbList); |
| for (String line: refOnly) |
| error("expected line not found: " + line); |
| |
| return sbOnly.isEmpty() && refOnly.isEmpty(); |
| } |
| |
| abstract static class Visitor { |
| MethodParametersTester tester; |
| File classesdir; |
| |
| public Visitor(MethodParametersTester tester) { |
| this.tester = tester; |
| } |
| |
| abstract void visitClass(final String classname, final File cfile, |
| final StringBuilder sb) throws Exception; |
| |
| public void error(String msg) { |
| tester.error(msg); |
| } |
| |
| public void warn(String msg) { |
| tester.warn(msg); |
| } |
| } |
| |
| void error(String msg) { |
| System.err.println("Error: " + msg); |
| errors++; |
| } |
| |
| void warn(String msg) { |
| System.err.println("Warning: " + msg); |
| warnings++; |
| } |
| |
| void info(String msg) { |
| System.out.println(msg); |
| } |
| } |