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test/tools/javap/DescriptorTest.java@4a48f3173534 (annotated)

test/tools/javap/DescriptorTest.java

Thu, 04 Apr 2013 19:05:42 -0700

author

katleman

date

Thu, 04 Apr 2013 19:05:42 -0700

changeset 1662

4a48f3173534

parent 0

959103a6100f

permissions

-rw-r--r--

Added tag jdk8-b84 for changeset cfb65ca92082

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/**
aoqi@0	25	* @test
aoqi@0	26	* @bug 8007052
aoqi@0	27	* @summary javap should include the descriptor for a method in verbose mode
aoqi@0	28	*/
aoqi@0	29
aoqi@0	30	import java.io.File;
aoqi@0	31	import java.io.FileWriter;
aoqi@0	32	import java.io.IOException;
aoqi@0	33	import java.io.PrintWriter;
aoqi@0	34	import java.io.StringWriter;
aoqi@0	35	import java.util.regex.Pattern;
aoqi@0	36
aoqi@0	37	public class DescriptorTest {
aoqi@0	38	public static void main(String... args) throws Exception {
aoqi@0	39	new DescriptorTest().run();
aoqi@0	40	}
aoqi@0	41
aoqi@0	42	void run() throws Exception {
aoqi@0	43	File srcDir = new File("src");
aoqi@0	44	srcDir.mkdirs();
aoqi@0	45	File classesDir = new File("classes");
aoqi@0	46	classesDir.mkdirs();
aoqi@0	47
aoqi@0	48	File f = writeFile(new File(srcDir, "E.java"), "enum E { A, B }");
aoqi@0	49	javac("-d", classesDir.getPath(), f.getPath());
aoqi@0	50	String out = javap("-p", "-v", new File(classesDir, "E.class").getPath());
aoqi@0	51	Pattern expect = Pattern.compile("\\Qprivate E();\\E\\s+\\Qdescriptor: (Ljava/lang/String;I)V\\E");
aoqi@0	52	checkContains(out, expect);
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	File writeFile(File f, String body) throws IOException {
aoqi@0	56	try (FileWriter out = new FileWriter(f)) {
aoqi@0	57	out.write(body);
aoqi@0	58	}
aoqi@0	59	return f;
aoqi@0	60	}
aoqi@0	61
aoqi@0	62	void javac(String... args) throws Exception {
aoqi@0	63	StringWriter sw = new StringWriter();
aoqi@0	64	PrintWriter pw = new PrintWriter(sw);
aoqi@0	65	int rc = com.sun.tools.javac.Main.compile(args, pw);
aoqi@0	66	pw.flush();
aoqi@0	67	String out = sw.toString();
aoqi@0	68	if (!out.isEmpty())
aoqi@0	69	System.err.println(out);
aoqi@0	70	if (rc != 0)
aoqi@0	71	throw new Exception("compilation failed");
aoqi@0	72	}
aoqi@0	73
aoqi@0	74	String javap(String... args) throws Exception {
aoqi@0	75	StringWriter sw = new StringWriter();
aoqi@0	76	PrintWriter pw = new PrintWriter(sw);
aoqi@0	77	int rc = com.sun.tools.javap.Main.run(args, pw);
aoqi@0	78	pw.flush();
aoqi@0	79	String out = sw.toString();
aoqi@0	80	if (!out.isEmpty())
aoqi@0	81	System.err.println(out);
aoqi@0	82	if (rc != 0)
aoqi@0	83	throw new Exception("javap failed");
aoqi@0	84	return out;
aoqi@0	85	}
aoqi@0	86
aoqi@0	87	void checkContains(String s, Pattern p) throws Exception {
aoqi@0	88	if (!p.matcher(s).find())
aoqi@0	89	throw new Exception("expected pattern not found: " + p);
aoqi@0	90	}
aoqi@0	91	}