jdk

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InvalidOptions.java 
78 строк · 2.5 Кб
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/*
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 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 8027411 8032869
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 * @summary test an invalid option
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 * @modules jdk.jdeps/com.sun.tools.javap
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 */
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import java.io.*;
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import java.util.zip.*;
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public class InvalidOptions {
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    int errorCount;
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    String log;
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    public static void main(String[] args) throws Exception {
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        new InvalidOptions().run();
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    }
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    void run() throws Exception {
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        test(2, "-b", "Error: unknown option: -b",
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                      "Usage: javap <options> <classes>",
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                      "use --help for a list of possible options");
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        if (errorCount > 0)
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            throw new Exception(errorCount + " errors received");
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    }
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    void test(int expect, String option, String ... expectedOutput) {
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        String output = runJavap(expect, option);
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        verify(output, expectedOutput);
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    }
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    String runJavap(int expect, String... option) {
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        StringWriter sw = new StringWriter();
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        PrintWriter pw = new PrintWriter(sw);
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        int rc = com.sun.tools.javap.Main.run(option, pw);
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        pw.close();
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        System.out.println("javap prints:");
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        System.out.println(sw);
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        if (rc != expect)
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           throw new Error("Expect to return " + expect + ", but return " + rc);
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        return sw.toString();
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    }
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    void verify(String output, String... expects) {
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        for (String expect: expects) {
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            if (!output.contains(expect))
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                error(expect + " not found");
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        }
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    }
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    void error(String msg) {
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        System.err.println(msg);
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        errorCount++;
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    }
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}
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