1 /*
2 * Copyright (c) 2014, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package jdk.nashorn.internal.runtime.test;
26
27 import static org.testng.Assert.assertEquals;
28 import static org.testng.Assert.assertFalse;
29 import static org.testng.Assert.assertTrue;
30 import java.io.File;
31 import java.io.IOException;
32 import java.nio.file.DirectoryStream;
33 import java.nio.file.FileSystems;
34 import java.nio.file.Files;
35 import java.nio.file.Path;
36 import javax.script.ScriptEngine;
37 import javax.script.ScriptException;
38 import jdk.nashorn.api.scripting.NashornScriptEngineFactory;
39 import org.testng.annotations.Test;
40
41 /**
42 * @test
43 * @bug 8039185 8039403
44 * @summary Test for persistent code cache and path handling
45 * @run testng jdk.nashorn.internal.runtime.test.CodeStoreAndPathTest
46 */
47 @SuppressWarnings("javadoc")
48 public class CodeStoreAndPathTest {
49
50 final static String code1 = "var code1; var x = 'Hello Script'; var x1 = 'Hello Script'; "
51 + "var x2 = 'Hello Script'; var x3 = 'Hello Script'; "
52 + "var x4 = 'Hello Script'; var x5 = 'Hello Script';"
53 + "var x6 = 'Hello Script'; var x7 = 'Hello Script'; "
54 + "var x8 = 'Hello Script'; var x9 = 'Hello Script'; "
55 + "var x10 = 'Hello Script';"
56 + "function f() {x ='Bye Script'; x1 ='Bye Script'; x2='Bye Script';"
57 + "x3='Bye Script'; x4='Bye Script'; x5='Bye Script'; x6='Bye Script';"
58 + "x7='Bye Script'; x8='Bye Script'; var x9 = 'Hello Script'; "
59 + "var x10 = 'Hello Script';}"
60 + "function g() {x ='Bye Script'; x1 ='Bye Script'; x2='Bye Script';"
61 + "x3='Bye Script'; x4='Bye Script'; x5='Bye Script'; x6='Bye Script';"
62 + "x7='Bye Script'; x8='Bye Script'; var x9 = 'Hello Script'; "
63 + "var x10 = 'Hello Script';}"
64 + "function h() {x ='Bye Script'; x1 ='Bye Script'; x2='Bye Script';"
65 + "x3='Bye Script'; x4='Bye Script'; x5='Bye Script'; x6='Bye Script';"
66 + "x7='Bye Script'; x8='Bye Script'; var x9 = 'Hello Script'; "
67 + "var x10 = 'Hello Script';}"
68 + "function i() {x ='Bye Script'; x1 ='Bye Script'; x2='Bye Script';"
69 + "x3='Bye Script'; x4='Bye Script'; x5='Bye Script'; x6='Bye Script';"
70 + "x7='Bye Script'; x8='Bye Script'; var x9 = 'Hello Script'; "
71 + "var x10 = 'Hello Script';}";
72 final static String code2 = "var code2; var x = 'Hello Script'; var x1 = 'Hello Script'; "
73 + "var x2 = 'Hello Script'; var x3 = 'Hello Script'; "
74 + "var x4 = 'Hello Script'; var x5 = 'Hello Script';"
75 + "var x6 = 'Hello Script'; var x7 = 'Hello Script'; "
76 + "var x8 = 'Hello Script'; var x9 = 'Hello Script'; "
77 + "var x10 = 'Hello Script';"
78 + "function f() {x ='Bye Script'; x1 ='Bye Script'; x2='Bye Script';"
79 + "x3='Bye Script'; x4='Bye Script'; x5='Bye Script'; x6='Bye Script';"
80 + "x7='Bye Script'; x8='Bye Script'; var x9 = 'Hello Script'; "
81 + "var x10 = 'Hello Script';}"
82 + "function g() {x ='Bye Script'; x1 ='Bye Script'; x2='Bye Script';"
83 + "x3='Bye Script'; x4='Bye Script'; x5='Bye Script'; x6='Bye Script';"
84 + "x7='Bye Script'; x8='Bye Script'; var x9 = 'Hello Script'; "
85 + "var x10 = 'Hello Script';}"
86 + "function h() {x ='Bye Script'; x1 ='Bye Script'; x2='Bye Script';"
87 + "x3='Bye Script'; x4='Bye Script'; x5='Bye Script'; x6='Bye Script';"
88 + "x7='Bye Script'; x8='Bye Script'; var x9 = 'Hello Script'; "
89 + "var x10 = 'Hello Script';}"
90 + "function i() {x ='Bye Script'; x1 ='Bye Script'; x2='Bye Script';"
91 + "x3='Bye Script'; x4='Bye Script'; x5='Bye Script'; x6='Bye Script';"
92 + "x7='Bye Script'; x8='Bye Script'; var x9 = 'Hello Script'; "
93 + "var x10 = 'Hello Script';}";
94 // Script size < Default minimum size for storing a compiled script class
95 final static String code3 = "var code3; var x = 'Hello Script'; var x1 = 'Hello Script'; ";
96 final static String nestedFunctions = "\n" +
97 "(function outer() { \n" +
98 " var map = null; \n" +
99 " (function inner() { \n" +
100 " var object; \n" +
101 " if (map === null) { \n" +
102 " map = (function() { \n" +
103 " var HashMap = Java.type('java.util.HashMap'); \n" +
104 " map = new HashMap(); \n" +
105 " map.name = 'name'; \n" +
106 " map.id = 1234;\n" +
107 " map.basePath = 'basePath'; \n" +
108 " map.extensionPath = 'extension';\n" +
109 " map.address = 'address'; \n" +
110 " map.name = 'name'; \n" +
111 " map.id = 1234;\n" +
112 " map.basePath = 'basePath'; \n" +
113 " map.extensionPath = 'extension';\n" +
114 " map.address = 'address';\n" +
115 " map.name = 'name'; \n" +
116 " map.id = 1234;\n" +
117 " map.basePath = 'basePath'; \n" +
118 " map.extensionPath = 'extension';\n" +
119 " map.address = 'address'; \n" +
120 " return map; \n" +
121 " }()); \n" +
122 " } \n" +
123 " object = {}; \n" +
124 " return object; \n" +
125 " })(); \n" +
126 "}()); ";
127 final static String longNestedFunctions = "\n" +
128 "(function outer() { \n" +
129 " var map = null; \n" +
130 " (function inner() { \n" +
131 " var object; \n" +
132 " var HashMap = Java.type('java.util.HashMap'); \n" +
133 " map = new HashMap(); \n" +
134 " map.name = 'name'; \n" +
135 " map.id = 1234;\n" +
136 " map.basePath = 'basePath'; \n" +
137 " map.extensionPath = 'extension';\n" +
138 " map.address = 'address'; \n" +
139 " map.name = 'name'; \n" +
140 " map.id = 1234;\n" +
141 " map.basePath = 'basePath'; \n" +
142 " map.extensionPath = 'extension';\n" +
143 " map.address = 'address';\n" +
144 " map.name = 'name'; \n" +
145 " map.id = 1234;\n" +
146 " map.basePath = 'basePath'; \n" +
147 " map.extensionPath = 'extension';\n" +
148 " map.address = 'address'; \n" +
149 " map.name = 'name'; \n" +
150 " map.id = 1234;\n" +
151 " map.basePath = 'basePath'; \n" +
152 " map.extensionPath = 'extension';\n" +
153 " map.address = 'address'; \n" +
154 " map.name = 'name'; \n" +
155 " map.id = 1234;\n" +
156 " map.basePath = 'basePath'; \n" +
157 " map.extensionPath = 'extension';\n" +
158 " map.address = 'address';\n" +
159 " map.name = 'name'; \n" +
160 " map.id = 1234;\n" +
161 " map.basePath = 'basePath'; \n" +
162 " map.extensionPath = 'extension';\n" +
163 " map.address = 'address'; \n" +
164 " map.name = 'name'; \n" +
165 " map.id = 1234;\n" +
166 " map.basePath = 'basePath'; \n" +
167 " map.extensionPath = 'extension';\n" +
168 " map.address = 'address'; \n" +
169 " map.name = 'name'; \n" +
170 " map.id = 1234;\n" +
171 " map.basePath = 'basePath'; \n" +
172 " map.extensionPath = 'extension';\n" +
173 " map.address = 'address';\n" +
174 " map.name = 'name'; \n" +
175 " map.id = 1234;\n" +
176 " map.basePath = 'basePath'; \n" +
177 " map.extensionPath = 'extension';\n" +
178 " map.address = 'address'; \n" +
179 " map.name = 'name'; \n" +
180 " map.id = 1234;\n" +
181 " map.basePath = 'basePath'; \n" +
182 " map.extensionPath = 'extension';\n" +
183 " map.address = 'address'; \n" +
184 " map.name = 'name'; \n" +
185 " map.id = 1234;\n" +
186 " map.basePath = 'basePath'; \n" +
187 " map.extensionPath = 'extension';\n" +
188 " map.address = 'address';\n" +
189 " map.name = 'name'; \n" +
190 " map.id = 1234;\n" +
191 " map.basePath = 'basePath'; \n" +
192 " map.extensionPath = 'extension';\n" +
193 " map.address = 'address'; \n" +
194 " map.name = 'name'; \n" +
195 " map.id = 1234;\n" +
196 " map.basePath = 'basePath'; \n" +
197 " map.extensionPath = 'extension';\n" +
198 " map.address = 'address'; \n" +
199 " map.name = 'name'; \n" +
200 " map.id = 1234;\n" +
201 " map.basePath = 'basePath'; \n" +
202 " map.extensionPath = 'extension';\n" +
203 " map.address = 'address';\n" +
204 " map.name = 'name'; \n" +
205 " map.id = 1234;\n" +
206 " map.basePath = 'basePath'; \n" +
207 " map.extensionPath = 'extension';\n" +
208 " map.address = 'address'; \n" +
209 " map.name = 'name'; \n" +
210 " map.id = 1234;\n" +
211 " map.basePath = 'basePath'; \n" +
212 " map.extensionPath = 'extension';\n" +
213 " map.address = 'address'; \n" +
214 " map.name = 'name'; \n" +
215 " map.id = 1234;\n" +
216 " map.basePath = 'basePath'; \n" +
217 " map.extensionPath = 'extension';\n" +
218 " map.address = 'address';\n" +
219 " map.name = 'name'; \n" +
220 " map.id = 1234;\n" +
221 " map.basePath = 'basePath'; \n" +
222 " map.extensionPath = 'extension';\n" +
223 " map.address = 'address'; \n" +
224 " map.name = 'name'; \n" +
225 " map.id = 1234;\n" +
226 " map.basePath = 'basePath'; \n" +
227 " map.extensionPath = 'extension';\n" +
228 " map.address = 'address'; \n" +
229 " map.name = 'name'; \n" +
230 " map.id = 1234;\n" +
231 " map.basePath = 'basePath'; \n" +
232 " map.extensionPath = 'extension';\n" +
233 " map.address = 'address';\n" +
234 " map.name = 'name'; \n" +
235 " map.id = 1234;\n" +
236 " map.basePath = 'basePath'; \n" +
237 " map.extensionPath = 'extension';\n" +
238 " map.address = 'address'; \n" +
239 " map.name = 'name'; \n" +
240 " map.id = 1234;\n" +
241 " map.basePath = 'basePath'; \n" +
242 " map.extensionPath = 'extension';\n" +
243 " map.address = 'address'; \n" +
244 " map.name = 'name'; \n" +
245 " map.id = 1234;\n" +
246 " map.basePath = 'basePath'; \n" +
247 " map.extensionPath = 'extension';\n" +
248 " map.address = 'address';\n" +
249 " map.name = 'name'; \n" +
250 " map.id = 1234;\n" +
251 " map.basePath = 'basePath'; \n" +
252 " map.extensionPath = 'extension';\n" +
253 " map.address = 'address'; \n" +
254 " map.name = 'name'; \n" +
255 " map.id = 1234;\n" +
256 " map.basePath = 'basePath'; \n" +
257 " map.extensionPath = 'extension';\n" +
258 " map.address = 'address'; \n" +
259 " map.name = 'name'; \n" +
260 " map.id = 1234;\n" +
261 " map.basePath = 'basePath'; \n" +
262 " map.extensionPath = 'extension';\n" +
263 " map.address = 'address';\n" +
264 " map.name = 'name'; \n" +
265 " map.id = 1234;\n" +
266 " map.basePath = 'basePath'; \n" +
267 " map.extensionPath = 'extension';\n" +
268 " map.address = 'address'; \n" +
269 " map.name = 'name'; \n" +
270 " map.id = 1234;\n" +
271 " map.basePath = 'basePath'; \n" +
272 " map.extensionPath = 'extension';\n" +
273 " map.address = 'address'; \n" +
274 " map.name = 'name'; \n" +
275 " map.id = 1234;\n" +
276 " map.basePath = 'basePath'; \n" +
277 " map.extensionPath = 'extension';\n" +
278 " map.address = 'address';\n" +
279 " map.name = 'name'; \n" +
280 " map.id = 1234;\n" +
281 " map.basePath = 'basePath'; \n" +
282 " map.extensionPath = 'extension';\n" +
283 " map.address = 'address'; \n" +
284 " map.name = 'name'; \n" +
285 " map.id = 1234;\n" +
286 " map.basePath = 'basePath'; \n" +
287 " map.extensionPath = 'extension';\n" +
288 " map.address = 'address'; \n" +
289 " map.name = 'name'; \n" +
290 " map.id = 1234;\n" +
291 " map.basePath = 'basePath'; \n" +
292 " map.extensionPath = 'extension';\n" +
293 " map.address = 'address';\n" +
294 " map.name = 'name'; \n" +
295 " map.id = 1234;\n" +
296 " map.basePath = 'basePath'; \n" +
297 " map.extensionPath = 'extension';\n" +
298 " map.address = 'address'; \n" +
299 " map.name = 'name'; \n" +
300 " map.id = 1234;\n" +
301 " map.basePath = 'basePath'; \n" +
302 " map.extensionPath = 'extension';\n" +
303 " map.address = 'address'; \n" +
304 " map.name = 'name'; \n" +
305 " map.id = 1234;\n" +
306 " map.basePath = 'basePath'; \n" +
307 " map.extensionPath = 'extension';\n" +
308 " map.address = 'address';\n" +
309 " map.name = 'name'; \n" +
310 " map.id = 1234;\n" +
311 " map.basePath = 'basePath'; \n" +
312 " map.extensionPath = 'extension';\n" +
313 " map.address = 'address'; \n" +
314 " map.name = 'name'; \n" +
315 " map.id = 1234;\n" +
316 " map.basePath = 'basePath'; \n" +
317 " map.extensionPath = 'extension';\n" +
318 " map.address = 'address'; \n" +
319 " map.name = 'name'; \n" +
320 " map.id = 1234;\n" +
321 " map.basePath = 'basePath'; \n" +
322 " map.extensionPath = 'extension';\n" +
323 " map.address = 'address';\n" +
324 " map.name = 'name'; \n" +
325 " map.id = 1234;\n" +
326 " map.basePath = 'basePath'; \n" +
327 " map.extensionPath = 'extension';\n" +
328 " map.address = 'address'; \n" +
329 " map.name = 'name'; \n" +
330 " map.id = 1234;\n" +
331 " map.basePath = 'basePath'; \n" +
332 " map.extensionPath = 'extension';\n" +
333 " map.address = 'address'; \n" +
334 " map.name = 'name'; \n" +
335 " map.id = 1234;\n" +
336 " map.basePath = 'basePath'; \n" +
337 " map.extensionPath = 'extension';\n" +
338 " map.address = 'address';\n" +
339 " map.name = 'name'; \n" +
340 " map.id = 1234;\n" +
341 " map.basePath = 'basePath'; \n" +
342 " map.extensionPath = 'extension';\n" +
343 " map.address = 'address'; \n" +
344 " map.name = 'name'; \n" +
345 " map.id = 1234;\n" +
346 " map.basePath = 'basePath'; \n" +
347 " map.extensionPath = 'extension';\n" +
348 " map.address = 'address'; \n" +
349 " map.name = 'name'; \n" +
350 " map.id = 1234;\n" +
351 " map.basePath = 'basePath'; \n" +
352 " map.extensionPath = 'extension';\n" +
353 " map.address = 'address';\n" +
354 " map.name = 'name'; \n" +
355 " map.id = 1234;\n" +
356 " map.basePath = 'basePath'; \n" +
357 " map.extensionPath = 'extension';\n" +
358 " map.address = 'address'; \n" +
359 " map.name = 'name'; \n" +
360 " map.id = 1234;\n" +
361 " map.basePath = 'basePath'; \n" +
362 " map.extensionPath = 'extension';\n" +
363 " map.address = 'address'; \n" +
364 " map.name = 'name'; \n" +
365 " map.id = 1234;\n" +
366 " map.basePath = 'basePath'; \n" +
367 " map.extensionPath = 'extension';\n" +
368 " map.address = 'address';\n" +
369 " map.name = 'name'; \n" +
370 " map.id = 1234;\n" +
371 " map.basePath = 'basePath'; \n" +
372 " map.extensionPath = 'extension';\n" +
373 " map.address = 'address'; \n" +
374 " map.name = 'name'; \n" +
375 " map.id = 1234;\n" +
376 " map.basePath = 'basePath'; \n" +
377 " map.extensionPath = 'extension';\n" +
378 " map.address = 'address'; \n" +
379 " map.name = 'name'; \n" +
380 " map.id = 1234;\n" +
381 " map.basePath = 'basePath'; \n" +
382 " map.extensionPath = 'extension';\n" +
383 " map.address = 'address';\n" +
384 " map.name = 'name'; \n" +
385 " map.id = 1234;\n" +
386 " map.basePath = 'basePath'; \n" +
387 " map.extensionPath = 'extension';\n" +
388 " map.address = 'address'; \n" +
389 " object = {}; \n" +
390 " return object; \n" +
391 " })(); \n" +
392 "}()); ";
393 final static String codeCache = "build/nashorn_code_cache";
394 final static String oldUserDir = System.getProperty("user.dir");
395
396 private static final String[] ENGINE_OPTIONS_OPT = new String[]{"--persistent-code-cache", "--optimistic-types=true"};
397 private static final String[] ENGINE_OPTIONS_NOOPT = new String[]{"--persistent-code-cache", "--optimistic-types=false"};
398
399 @Test
400 public void pathHandlingTest() {
401 System.setProperty("nashorn.persistent.code.cache", codeCache);
402 final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
403
404 fac.getScriptEngine(ENGINE_OPTIONS_NOOPT);
405
406 final Path expectedCodeCachePath = FileSystems.getDefault().getPath(oldUserDir + File.separator + codeCache);
407 final Path actualCodeCachePath = FileSystems.getDefault().getPath(System.getProperty(
408 "nashorn.persistent.code.cache")).toAbsolutePath();
409 // Check that nashorn code cache is created in current working directory
410 assertEquals(actualCodeCachePath, expectedCodeCachePath);
411 // Check that code cache dir exists and it's not empty
412 final File file = new File(actualCodeCachePath.toUri());
413 assertTrue(file.exists(), "No code cache directory was created!");
414 assertTrue(file.isDirectory(), "Code cache location is not a directory!");
415 assertFalse(file.list().length == 0, "Code cache directory is empty!");
416 }
417
418 @Test
419 public void changeUserDirTest() throws ScriptException, IOException {
420 System.setProperty("nashorn.persistent.code.cache", codeCache);
421 final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
422 final ScriptEngine e = fac.getScriptEngine(ENGINE_OPTIONS_NOOPT);
423 final Path codeCachePath = getCodeCachePath(false);
424 final String newUserDir = "build/newUserDir";
425 // Now changing current working directory
426 System.setProperty("user.dir", System.getProperty("user.dir") + File.separator + newUserDir);
427 try {
428 // Check that a new compiled script is stored in existing code cache
429 e.eval(code1);
430 final DirectoryStream<Path> stream = Files.newDirectoryStream(codeCachePath);
431 checkCompiledScripts(stream, 1);
432 // Setting to default current working dir
433 } finally {
434 System.setProperty("user.dir", oldUserDir);
435 }
436 }
437
438 @Test
439 public void codeCacheTest() throws ScriptException, IOException {
440 System.setProperty("nashorn.persistent.code.cache", codeCache);
441 final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
442 final ScriptEngine e = fac.getScriptEngine(ENGINE_OPTIONS_NOOPT);
443 final Path codeCachePath = getCodeCachePath(false);
444 e.eval(code1);
445 e.eval(code2);
446 e.eval(code3);// less than minimum size for storing
447 // adding code1 and code2.
448 final DirectoryStream<Path> stream = Files.newDirectoryStream(codeCachePath);
449 checkCompiledScripts(stream, 2);
450 }
451
452 @Test
453 public void codeCacheTestOpt() throws ScriptException, IOException {
454 System.setProperty("nashorn.persistent.code.cache", codeCache);
455 final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
456 final ScriptEngine e = fac.getScriptEngine(ENGINE_OPTIONS_OPT);
457 final Path codeCachePath = getCodeCachePath(true);
458 e.eval(code1);
459 e.eval(code2);
460 e.eval(code3);// less than minimum size for storing
461 // adding code1 and code2.
462 final DirectoryStream<Path> stream = Files.newDirectoryStream(codeCachePath);
463 checkCompiledScripts(stream, 4);
464 }
465
466 @Test
467 public void testNestedFunctionStore() throws ScriptException, IOException {
468 System.setProperty("nashorn.persistent.code.cache", codeCache);
469 final NashornScriptEngineFactory factory = new NashornScriptEngineFactory();
470 factory.getScriptEngine(ENGINE_OPTIONS_OPT).eval(nestedFunctions);
471 factory.getScriptEngine(ENGINE_OPTIONS_OPT).eval(nestedFunctions);
472 factory.getScriptEngine(ENGINE_OPTIONS_OPT).eval(nestedFunctions);
473 factory.getScriptEngine(ENGINE_OPTIONS_OPT).eval(nestedFunctions);
474 }
475
476 @Test
477 public void testSplitFunctionStore() throws ScriptException, IOException {
478 System.setProperty("nashorn.persistent.code.cache", codeCache);
479 System.setProperty("nashorn.compiler.splitter.threshold", "500");
480 final NashornScriptEngineFactory factory = new NashornScriptEngineFactory();
481 factory.getScriptEngine(ENGINE_OPTIONS_OPT).eval(longNestedFunctions);
482 factory.getScriptEngine(ENGINE_OPTIONS_OPT).eval(longNestedFunctions);
483 factory.getScriptEngine(ENGINE_OPTIONS_OPT).eval(longNestedFunctions);
484 factory.getScriptEngine(ENGINE_OPTIONS_OPT).eval(longNestedFunctions);
485 System.getProperties().remove("nashorn.compiler.splitter.threshold");
486 }
487
488 private static Path getCodeCachePath(final boolean optimistic) {
489 final String codeCache = System.getProperty("nashorn.persistent.code.cache");
490 final Path codeCachePath = FileSystems.getDefault().getPath(codeCache).toAbsolutePath();
491 final String[] files = codeCachePath.toFile().list();
492 for (final String file : files) {
493 if (file.endsWith("_opt") == optimistic) {
494 return codeCachePath.resolve(file);
495 }
496 }
497 throw new AssertionError("Code cache path not found: " + codeCachePath.toString());
498 }
499
500 private static void checkCompiledScripts(final DirectoryStream<Path> stream, final int numberOfScripts) throws IOException {
501 int n = numberOfScripts;
502 for (@SuppressWarnings("unused") final Path file : stream) {
503 n--;
504 }
505 stream.close();
506 assertEquals(n, 0);
507 }
508
509 }