jdk

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/*
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 * Copyright (c) 2011, 2019, 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 6986895
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 * @bug 8201544
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 * @summary compiler gives misleading message for no input files
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 * @modules jdk.compiler
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 */
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import java.io.*;
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import java.util.*;
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public class T6986895 {
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    public static void main(String... args) throws Exception {
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        new T6986895().run();
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    }
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    String noSourceFiles = "no source files";
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    String noSourceFilesOrClasses = "no source files or class names";
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    String invalidFileName = "Invalid filename";
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    boolean isWindows = System.getProperty("os.name").startsWith("Windows");
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    void run() throws Exception {
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        Locale prev = Locale.getDefault();
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        try {
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            Locale.setDefault(Locale.ENGLISH);
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            test(noSourceFiles,           "-Werror");
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            test(noSourceFilesOrClasses,  "-Werror", "-Xprint");
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            if (isWindows)
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                test(invalidFileName, "-Werror", "someNonExistingFile*.java");
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        } finally {
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            Locale.setDefault(prev);
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        }
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    }
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    void test(String expect, String... args) throws Exception {
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        System.err.println("Test " + expect + ": " + Arrays.asList(args));
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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.javac.Main.compile(args, pw);
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        pw.close();
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        System.err.println("compilation failed; rc=" + rc);
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        String out = sw.toString();
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        if (!out.isEmpty())
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            System.err.println(out);
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        if (!out.contains(expect))
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            throw new Exception("expected text not found: " + expect);
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        System.err.println();
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    }
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}
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