--- /dev/null 2020-01-02 04:43:18.583999853 +0000 +++ new/test/jdk/jfr/api/consumer/TestRecordingFileReadEventEof.java 2020-01-30 06:28:34.264470221 +0000 @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2018, 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. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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. + */ + +package jdk.jfr.api.consumer; + +import java.io.EOFException; + +import jdk.jfr.Recording; +import jdk.jfr.consumer.RecordingFile; +import jdk.test.lib.Asserts; +import jdk.test.lib.jfr.Events; +import jdk.test.lib.jfr.SimpleEvent; + +/** + * @test + * @summary Verifies that RecordingFile.readEvent() throws EOF when past the last record + * @key jfr + * + * @library /lib / + * @run main/othervm jdk.jfr.api.consumer.TestRecordingFileReadEventEof + */ +public class TestRecordingFileReadEventEof { + + public static void main(String[] args) throws Throwable { + Recording r = new Recording(); + r.start(); + SimpleEvent t = new SimpleEvent(); + t.commit(); + r.stop(); + RecordingFile file = Events.copyTo(r); + r.close(); + file.readEvent(); + try { + file.readEvent(); + Asserts.fail("Expected EOFException not thrown"); + } catch (EOFException x) { + // OK, as expected + } + } +}