1 /* 2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6920317 27 * @summary package-info.java file has to be specified on the javac cmdline, else it will not be avail 28 * @library ../lib 29 */ 30 31 import java.io.*; 32 import java.util.*; 33 import javax.annotation.processing.*; 34 import javax.lang.model.*; 35 import javax.lang.model.element.*; 36 import javax.lang.model.util.*; 37 import javax.tools.*; 38 39 /** 40 * The test exercises different ways of providing annotations for a package. 41 * Each way provides an annotation with a unique argument. For each test 42 * case, the test verifies that the annotation with the correct argument is 43 * found by the compiler. 44 */ 45 public class T6920317 { 46 public static void main(String... args) throws Exception { 47 new T6920317().run(args); 48 } 49 50 // Used to describe properties of files to be put on command line, source path, class path 51 enum Kind { 52 /** File is not used. */ 53 NONE, 54 /** File is used. */ 55 OLD, 56 /** Only applies to files on classpath/sourcepath, when there is another file on the 57 * other path of type OLD, in which case, this file must be newer than the other one. */ 58 NEW, 59 /** Only applies to files on classpath/sourcepath, when there is no file in any other 60 * location, in which case, this file will be generated by the annotation processor. */ 61 GEN 62 } 63 64 void run(String... args) throws Exception { 65 // if no args given, all test cases are run 66 // if args given, they indicate the test cases to be run 67 for (int i = 0; i < args.length; i++) { 68 tests.add(Integer.valueOf(args[i])); 69 } 70 71 setup(); 72 73 // Run tests for all combinations of files on command line, source path and class path. 74 // Invalid combinations are skipped in the test method 75 for (Kind cmdLine: EnumSet.of(Kind.NONE, Kind.OLD)) { 76 for (Kind srcPath: Kind.values()) { 77 for (Kind clsPath: Kind.values()) { 78 try { 79 test(cmdLine, srcPath, clsPath); 80 } catch (Exception e) { 81 e.printStackTrace(); 82 error("Exception " + e); 83 // uncomment to stop on first failed test case 84 // throw e; 85 } 86 } 87 } 88 } 89 90 if (errors > 0) 91 throw new Exception(errors + " errors occurred"); 92 } 93 94 /** One time setup for files and directories to be used in the various test cases. */ 95 void setup() throws Exception { 96 // Annotation used in test cases to annotate package. This file is 97 // given on the command line in test cases. 98 test_java = writeFile("Test.java", "package p; @interface Test { String value(); }"); 99 // Compile the annotation for use later in setup 100 File tmpClasses = new File("tmp.classes"); 101 compile(tmpClasses, new String[] { }, test_java); 102 103 // package-info file to use on the command line when requied 104 cl_pkgInfo_java = writeFile("cl/p/package-info.java", "@Test(\"CL\") package p;"); 105 106 // source path containing package-info 107 sp_old = new File("src.old"); 108 writeFile("src.old/p/package-info.java", "@Test(\"SP_OLD\") package p;"); 109 110 // class path containing package-info 111 cp_old = new File("classes.old"); 112 compile(cp_old, new String[] { "-classpath", tmpClasses.getPath() }, 113 writeFile("tmp.old/p/package-info.java", "@Test(\"CP_OLD\") package p;")); 114 115 // source path containing package-info which is newer than the one in cp-old 116 sp_new = new File("src.new"); 117 File old_class = new File(cp_old, "p/package-info.class"); 118 writeFile("src.new/p/package-info.java", "@Test(\"SP_NEW\") package p;", old_class); 119 120 // class path containing package-info which is newer than the one in sp-old 121 cp_new = new File("classes.new"); 122 File old_java = new File(sp_old, "p/package-info.java"); 123 compile(cp_new, new String[] { "-classpath", tmpClasses.getPath() }, 124 writeFile("tmp.new/p/package-info.java", "@Test(\"CP_NEW\") package p;", old_java)); 125 126 // directory containing package-info.java to be "generated" later by annotation processor 127 sp_gen = new File("src.gen"); 128 writeFile("src.gen/p/package-info.java", "@Test(\"SP_GEN\") package p;"); 129 130 // directory containing package-info.class to be "generated" later by annotation processor 131 cp_gen = new File("classes.gen"); 132 compile(cp_gen, new String[] { "-classpath", tmpClasses.getPath() }, 133 writeFile("tmp.gen/p/package-info.java", "@Test(\"CP_GEN\") package p;")); 134 } 135 136 void test(Kind cl, Kind sp, Kind cp) throws Exception { 137 if (skip(cl, sp, cp)) 138 return; 139 140 ++count; 141 // if test cases specified, skip this test case if not selected 142 if (tests.size() > 0 && !tests.contains(count)) 143 return; 144 145 System.err.println("Test " + count + " cl:" + cl + " sp:" + sp + " cp:" + cp); 146 147 // test specific tmp directory 148 File test_tmp = new File("tmp.test" + count); 149 test_tmp.mkdirs(); 150 151 // build up list of options and files to be compiled 152 List<String> opts = new ArrayList<String>(); 153 List<File> files = new ArrayList<File>(); 154 155 // expected value for annotation 156 String expect = null; 157 158 opts.add("-processorpath"); 159 opts.add(System.getProperty("test.classes")); 160 opts.add("-processor"); 161 opts.add(Processor.class.getName()); 162 opts.add("-proc:only"); 163 opts.add("-d"); 164 opts.add(test_tmp.getPath()); 165 //opts.add("-verbose"); 166 files.add(test_java); 167 168 /* 169 * Analyze each of cl, cp, sp, building up the options and files to 170 * be compiled, and determining the expected outcome fo the test case. 171 */ 172 173 // command line file: either omitted or given 174 if (cl == Kind.OLD) { 175 files.add(cl_pkgInfo_java); 176 // command line files always supercede files on paths 177 expect = "CL"; 178 } 179 180 // source path: 181 switch (sp) { 182 case NONE: 183 break; 184 185 case OLD: 186 opts.add("-sourcepath"); 187 opts.add(sp_old.getPath()); 188 if (expect == null && cp == Kind.NONE) { 189 assert cl == Kind.NONE && cp == Kind.NONE; 190 expect = "SP_OLD"; 191 } 192 break; 193 194 case NEW: 195 opts.add("-sourcepath"); 196 opts.add(sp_new.getPath()); 197 if (expect == null) { 198 assert cl == Kind.NONE && cp == Kind.OLD; 199 expect = "SP_NEW"; 200 } 201 break; 202 203 case GEN: 204 opts.add("-Agen=" + new File(sp_gen, "p/package-info.java")); 205 assert cl == Kind.NONE && cp == Kind.NONE; 206 expect = "SP_GEN"; 207 break; 208 } 209 210 // class path: 211 switch (cp) { 212 case NONE: 213 break; 214 215 case OLD: 216 opts.add("-classpath"); 217 opts.add(cp_old.getPath()); 218 if (expect == null && sp == Kind.NONE) { 219 assert cl == Kind.NONE && sp == Kind.NONE; 220 expect = "CP_OLD"; 221 } 222 break; 223 224 case NEW: 225 opts.add("-classpath"); 226 opts.add(cp_new.getPath()); 227 if (expect == null) { 228 assert cl == Kind.NONE && sp == Kind.OLD; 229 expect = "CP_NEW"; 230 } 231 break; 232 233 case GEN: 234 opts.add("-Agen=" + new File(cp_gen, "p/package-info.class")); 235 assert cl == Kind.NONE && sp == Kind.NONE; 236 expect = "CP_GEN"; 237 break; 238 } 239 240 // pass expected value to annotation processor 241 assert expect != null; 242 opts.add("-Aexpect=" + expect); 243 244 // compile the files with the options that have been built up 245 compile(opts, files); 246 } 247 248 /** 249 * Return true if this combination of parameters does not identify a useful test case. 250 */ 251 boolean skip(Kind cl, Kind sp, Kind cp) { 252 // skip if no package files required 253 if (cl == Kind.NONE && sp == Kind.NONE && cp == Kind.NONE) 254 return true; 255 256 // skip if both sp and sp are OLD, since results may be indeterminate 257 if (sp == Kind.OLD && cp == Kind.OLD) 258 return true; 259 260 // skip if sp or cp is NEW but the other is not OLD 261 if ((sp == Kind.NEW && cp != Kind.OLD) || (cp == Kind.NEW && sp != Kind.OLD)) 262 return true; 263 264 // only use GEN if no other package-info files present 265 if (sp == Kind.GEN && !(cl == Kind.NONE && cp == Kind.NONE) || 266 cp == Kind.GEN && !(cl == Kind.NONE && sp == Kind.NONE)) { 267 return true; 268 } 269 270 // remaining combinations are valid 271 return false; 272 } 273 274 /** Write a file with a given body. */ 275 File writeFile(String path, String body) throws Exception { 276 File f = new File(path); 277 if (f.getParentFile() != null) 278 f.getParentFile().mkdirs(); 279 Writer out = new FileWriter(path); 280 try { 281 out.write(body); 282 } finally { 283 out.close(); 284 } 285 return f; 286 } 287 288 /** Write a file with a given body, ensuring that the file is newer than a reference file. */ 289 File writeFile(String path, String body, File ref) throws Exception { 290 for (int i = 0; i < 5; i++) { 291 File f = writeFile(path, body); 292 if (f.lastModified() > ref.lastModified()) 293 return f; 294 Thread.sleep(2000); 295 } 296 throw new Exception("cannot create file " + path + " newer than " + ref); 297 } 298 299 /** Compile a file to a given directory, with options provided. */ 300 void compile(File dir, String[] opts, File src) throws Exception { 301 dir.mkdirs(); 302 List<String> opts2 = new ArrayList<String>(); 303 opts2.addAll(Arrays.asList("-d", dir.getPath())); 304 opts2.addAll(Arrays.asList(opts)); 305 compile(opts2, Collections.singletonList(src)); 306 } 307 308 /** Compile files with options provided. */ 309 void compile(List<String> opts, List<File> files) throws Exception { 310 System.err.println("javac: " + opts + " " + files); 311 List<String> args = new ArrayList<String>(); 312 args.addAll(opts); 313 for (File f: files) 314 args.add(f.getPath()); 315 StringWriter sw = new StringWriter(); 316 PrintWriter pw = new PrintWriter(sw); 317 int rc = com.sun.tools.javac.Main.compile(args.toArray(new String[args.size()]), pw); 318 pw.flush(); 319 if (sw.getBuffer().length() > 0) 320 System.err.println(sw.toString()); 321 if (rc != 0) 322 throw new Exception("compilation failed: rc=" + rc); 323 } 324 325 /** Report an error. */ 326 void error(String msg) { 327 System.err.println("Error: " + msg); 328 errors++; 329 } 330 331 /** Test case counter. */ 332 int count; 333 334 /** Number of errors found. */ 335 int errors; 336 337 /** Optional set of test cases to be run; empty implies all test cases. */ 338 Set<Integer> tests = new HashSet<Integer>(); 339 340 /* Files created by setup. */ 341 File test_java; 342 File sp_old; 343 File sp_new; 344 File sp_gen; 345 File cp_old; 346 File cp_new; 347 File cp_gen; 348 File cl_pkgInfo_java; 349 350 /** Annotation processor used to verify the expected value for the 351 package annotations found by javac. */ 352 @SupportedOptions({ "gen", "expect" }) 353 public static class Processor extends JavacTestingAbstractProcessor { 354 public boolean process(Set<? extends TypeElement> annots, RoundEnvironment renv) { 355 round++; 356 System.err.println("Round " + round + " annots:" + annots + " rootElems:" + renv.getRootElements()); 357 358 // if this is the first round and the gen option is given, use the filer to create 359 // a copy of the file specified by the gen option. 360 String gen = getOption("gen"); 361 if (round == 1 && gen != null) { 362 try { 363 Filer filer = processingEnv.getFiler(); 364 JavaFileObject f; 365 if (gen.endsWith(".java")) 366 f = filer.createSourceFile("p.package-info"); 367 else 368 f = filer.createClassFile("p.package-info"); 369 System.err.println("copy " + gen + " to " + f.getName()); 370 write(f, read(new File(gen))); 371 } catch (IOException e) { 372 error("Cannot create package-info file: " + e); 373 } 374 } 375 376 // if annotation processing is complete, verify the package annotation 377 // found by the compiler. 378 if (renv.processingOver()) { 379 System.err.println("final round"); 380 Elements eu = processingEnv.getElementUtils(); 381 TypeElement te = eu.getTypeElement("p.Test"); 382 PackageElement pe = eu.getPackageOf(te); 383 System.err.println("final: te:" + te + " pe:" + pe); 384 List<? extends AnnotationMirror> annos = pe.getAnnotationMirrors(); 385 System.err.println("final: annos:" + annos); 386 if (annos.size() == 1) { 387 String expect = "@" + te + "(\"" + getOption("expect") + "\")"; 388 String actual = annos.get(0).toString(); 389 checkEqual("package annotations", actual, expect); 390 } else { 391 error("Wrong number of annotations found: (" + annos.size() + ") " + annos); 392 } 393 } 394 395 return true; 396 } 397 398 /** Get an option given to the annotation processor. */ 399 String getOption(String name) { 400 return processingEnv.getOptions().get(name); 401 } 402 403 /** Read a file. */ 404 byte[] read(File file) { 405 byte[] bytes = new byte[(int) file.length()]; 406 DataInputStream in = null; 407 try { 408 in = new DataInputStream(new FileInputStream(file)); 409 in.readFully(bytes); 410 } catch (IOException e) { 411 error("Error reading file: " + e); 412 } finally { 413 if (in != null) { 414 try { 415 in.close(); 416 } catch (IOException e) { 417 error("Error closing file: " + e); 418 } 419 } 420 } 421 return bytes; 422 } 423 424 /** Write a file. */ 425 void write(JavaFileObject file, byte[] bytes) { 426 OutputStream out = null; 427 try { 428 out = file.openOutputStream(); 429 out.write(bytes, 0, bytes.length); 430 } catch (IOException e) { 431 error("Error writing file: " + e); 432 } finally { 433 if (out != null) { 434 try { 435 out.close(); 436 } catch (IOException e) { 437 error("Error closing file: " + e); 438 } 439 } 440 } 441 } 442 443 /** Check two strings are equal, and report an error if they are not. */ 444 private void checkEqual(String label, String actual, String expect) { 445 if (!actual.equals(expect)) { 446 error("Unexpected value for " + label + "; actual=" + actual + ", expected=" + expect); 447 } 448 } 449 450 /** Report an error to the annotation processing system. */ 451 void error(String msg) { 452 Messager messager = processingEnv.getMessager(); 453 messager.printMessage(Diagnostic.Kind.ERROR, msg); 454 } 455 456 int round; 457 } 458 }