* Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.

   @bug 4074875 4063511 8230342

import java.io.IOException;

import java.io.LineNumberReader;

import java.io.StringReader;

import java.util.function.Consumer;

        testReadChars();

        testEofs();

    }

    private static void testReadChars() throws Exception {

    private static void testEofs() throws Exception {

        String string = "first \n second";

        Consumer<LineNumberReader> c = (LineNumberReader r) -> {

            try {

                while (r.read() != -1)

                    continue;

            } catch (IOException e) {

                throw new RuntimeException(e);

            }

        };

        testEof(c, string, 1);

        c = (LineNumberReader r) -> {

            try {

                char[] buf = new char[128];

                while (r.read(buf) != -1)

                    continue;

            } catch (IOException e) {

                throw new RuntimeException(e);

            }

        };

        testEof(c, string, 1);

        c = (LineNumberReader r) -> {

            try {

                while (r.readLine() != null)

                    continue;

            } catch (IOException e) {

                throw new RuntimeException(e);

            }

        };

        testEof(c, string, 1);

    }

    private static void testEof(Consumer<LineNumberReader> c, String s, int n)

        throws Exception {

        LineNumberReader r = new LineNumberReader(new StringReader(s));

        c.accept(r);

        int line;

        if ((line = r.getLineNumber()) != n)

            throw new Exception("Failed test: Expected line number: " + n  +

                " , got " + line);

    }