| /* |
| * Copyright (c) 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 7020499 |
| * @summary Verify that the close resource code works properly in all cases |
| * @library /tools/lib |
| * @modules jdk.compiler/com.sun.tools.javac.api |
| * jdk.compiler/com.sun.tools.javac.comp |
| * jdk.compiler/com.sun.tools.javac.main |
| * @build toolbox.ToolBox TwrClose |
| * @run main TwrClose |
| */ |
| |
| import javax.tools.JavaFileManager; |
| import javax.tools.StandardLocation; |
| import javax.tools.ToolProvider; |
| |
| import com.sun.tools.javac.comp.Lower; |
| |
| import toolbox.JavacTask; |
| import toolbox.ToolBox; |
| |
| public class TwrClose { |
| |
| public static void main(String... args) throws Exception { |
| for (int i = 1; i < Lower.USE_CLOSE_RESOURCE_METHOD_THRESHOLD * 2; i++) { |
| new TwrClose().compile(i); |
| } |
| } |
| |
| ToolBox tb = new ToolBox(); |
| JavaFileManager fm = ToolProvider.getSystemJavaCompiler() |
| .getStandardFileManager(null, null, null); |
| |
| void compile(int trysCount) throws Exception { |
| StringBuilder testInvocations = new StringBuilder(); |
| StringBuilder testMethods = new StringBuilder(); |
| |
| for (int i = 0; i < trysCount; i++) { |
| testInvocations.append(TEST_INVOCATIONS_TEMPLATE.replace("#N", Integer.toString(i))); |
| testMethods.append(TEST_METHOD_TEMPLATE.replace("#N", Integer.toString(i))); |
| } |
| |
| String sourceCode = FILE_TEMPLATE.replace("#TEST_INVOCATIONS", testInvocations.toString()) |
| .replace("#TEST_METHODS", testMethods.toString()); |
| |
| System.err.println("analyzing:"); |
| System.err.println(sourceCode); |
| |
| try (ToolBox.MemoryFileManager mfm = new ToolBox.MemoryFileManager()) { |
| new JavacTask(tb).fileManager(mfm) |
| .sources(sourceCode) |
| .run() |
| .writeAll(); |
| ClassLoader cl = new ClassLoader(TwrClose.class.getClassLoader()) { |
| @Override |
| protected Class<?> findClass(String name) throws ClassNotFoundException { |
| byte[] data = mfm.getFileBytes(StandardLocation.CLASS_OUTPUT, name); |
| if (data != null) { |
| return defineClass(name, data, 0, data.length); |
| } |
| return super.findClass(name); |
| } |
| }; |
| |
| ((Runnable) cl.loadClass("Test").newInstance()).run(); |
| } |
| } |
| |
| final String TEST_INVOCATIONS_TEMPLATE = |
| " test#N(false, false, Arrays.asList(\"close\"));\n" + |
| " test#N(false, true, Arrays.asList(\"close\", \"close-exception\"));\n" + |
| " test#N(true, false, Arrays.asList(\"close\", \"inTwr\"));\n" + |
| " test#N(true, true, Arrays.asList(\"close\", \"inTwr\", \"close-exception\"));\n"; |
| |
| final String TEST_METHOD_TEMPLATE = |
| " private void test#N(boolean failInTwr, boolean failOnClose,\n" + |
| " List<String> expectedMessages) {\n" + |
| " List<String> messages = new ArrayList<>();\n" + |
| " try {\n" + |
| " try (CloseableImpl c = new CloseableImpl(messages, failOnClose)) {\n" + |
| " if (failInTwr)\n" + |
| " throw new IllegalStateException(\"inTwr\");\n" + |
| " }\n" + |
| " } catch (IllegalStateException ex) {\n" + |
| " messages.add(ex.getMessage());\n" + |
| " for (Throwable t : ex.getSuppressed()) {\n" + |
| " messages.add(t.getMessage());\n" + |
| " }\n" + |
| " }\n" + |
| " if (!expectedMessages.equals(messages))\n" + |
| " throw new AssertionError(\"Expected and actual messages differ; expectedMessages=\" +\n" + |
| " expectedMessages + \"; actual=\" + messages);\n" + |
| " }\n"; |
| |
| final String FILE_TEMPLATE = |
| "import java.util.*;\n" + |
| "public class Test implements Runnable {\n" + |
| " public void run() {\n" + |
| "#TEST_INVOCATIONS" + |
| " }\n" + |
| "#TEST_METHODS" + |
| " static class CloseableImpl implements AutoCloseable {\n" + |
| " private final List<String> messages;\n" + |
| " private final boolean failOnClose;\n" + |
| " public CloseableImpl(List<String> messages, boolean failOnClose) {\n" + |
| " this.messages = messages;\n" + |
| " this.failOnClose = failOnClose;\n" + |
| " }\n" + |
| " @Override\n" + |
| " public void close() {\n" + |
| " messages.add(\"close\");\n" + |
| " if (failOnClose)\n" + |
| " throw new IllegalStateException(\"close-exception\");\n" + |
| " }\n" + |
| " }\n" + |
| "}\n"; |
| } |