test/jdk/jdk/jfr/api/recorder/TestStartStopRecording.java
changeset 50113 caf115bb98ad
child 50225 2942ae532175
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/recorder/TestStartStopRecording.java	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,77 @@
+/*
+ * 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.recorder;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.LinkOption;
+import java.nio.file.Path;
+
+import jdk.jfr.Configuration;
+import jdk.jfr.Recording;
+
+/*
+ * @test TestStartStopRecording
+ *
+ * @key jfr
+ * @run main/othervm jdk.jfr.api.recorder.TestStartStopRecording
+ */
+public class TestStartStopRecording {
+
+    public static void main(String... args) throws Exception {
+        Configuration defaultConfig = Configuration.getConfiguration("default");
+        // Memory
+        Recording inMemory = new Recording(defaultConfig);
+        inMemory.setToDisk(false);
+
+        inMemory.start();
+
+        Path memoryFile = Files.createTempFile("memory-recording", ".jfr");
+        inMemory.dump(memoryFile);
+        assertValid(memoryFile, "Not a valid memory file.");
+        inMemory.stop();
+        inMemory.close();
+        // Disk
+        Recording toDisk = new Recording(defaultConfig);
+        toDisk.setToDisk(true);
+
+        toDisk.start();
+        toDisk.stop();
+        Path diskFile = Files.createTempFile("disk-recording", ".jfr");
+        toDisk.dump(diskFile);
+        assertValid(diskFile, "Not a valid disk file.");
+        toDisk.close();
+    }
+
+    private static void assertValid(Path path, String message) throws IOException {
+        if (!Files.exists(path, LinkOption.NOFOLLOW_LINKS)) {
+            throw new AssertionError(message + " Could not find file " + path);
+        }
+        if (Files.size(path) == 0) {
+            throw new AssertionError(message + " File size = 0 for " + path);
+        }
+    }
+}