--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/nio/channels/FileChannel/Write.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2001, 2010, 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 4475533 4698138 4638365 4796221
+ * @summary Test FileChannel write
+ * @run main/othervm Write
+ */
+
+import java.nio.channels.*;
+import java.nio.*;
+import java.io.*;
+
+public class Write {
+
+ public static void main(String[] args) throws Exception {
+ test1(); // for bug 4475533
+ test2();
+ test3(); // for bug 4698138
+
+ // This test is not suitable for automated testing at this time.
+ // I am commenting it out but it will be easy to manually
+ // test for a regression in this area. See also 4796221.
+ //test4(); // for bug 4638365
+ }
+
+ // Test to see that offset > length does not throw exception
+ static void test1() throws Exception {
+ ByteBuffer[] dsts = new ByteBuffer[4];
+ for (int i=0; i<4; i++)
+ dsts[i] = ByteBuffer.allocateDirect(10);
+
+ File testFile = File.createTempFile("test1", null);
+ try {
+ FileOutputStream fos = new FileOutputStream(testFile);
+ FileChannel fc = fos.getChannel();
+ fc.write(dsts, 2, 1);
+ fos.close();
+ } finally {
+ testFile.delete();
+ }
+ }
+
+ // Test to see that the appropriate buffers are updated
+ static void test2() throws Exception {
+ File testFile = File.createTempFile("test2", null);
+ testFile.delete();
+ ByteBuffer[] srcs = new ByteBuffer[4];
+ for (int i=0; i<4; i++)
+ srcs[i] = ByteBuffer.allocateDirect(10);
+
+ srcs[0].put((byte)1); srcs[0].flip();
+ srcs[1].put((byte)2); srcs[1].flip();
+ srcs[2].put((byte)3); srcs[2].flip();
+ srcs[3].put((byte)4); srcs[3].flip();
+
+ FileOutputStream fos = new FileOutputStream(testFile);
+ FileChannel fc = fos.getChannel();
+ try {
+ fc.write(srcs, 1, 2);
+ } finally {
+ fc.close();
+ }
+
+ FileInputStream fis = new FileInputStream(testFile);
+ fc = fis.getChannel();
+ try {
+ ByteBuffer bb = ByteBuffer.allocateDirect(10);
+ fc.read(bb);
+ bb.flip();
+ if (bb.get() != 2)
+ throw new RuntimeException("Write failure");
+ if (bb.get() != 3)
+ throw new RuntimeException("Write failure");
+ try {
+ bb.get();
+ throw new RuntimeException("Write failure");
+ } catch (BufferUnderflowException bufe) {
+ // correct result
+ }
+ } finally {
+ fc.close();
+ }
+
+ // eagerly clean-up
+ testFile.delete();
+ }
+
+ // Test write to a negative position (bug 4698138).
+ static void test3() throws Exception {
+ File testFile = File.createTempFile("test1", null);
+ testFile.deleteOnExit();
+ ByteBuffer dst = ByteBuffer.allocate(10);
+ FileOutputStream fos = new FileOutputStream(testFile);
+ FileChannel fc = fos.getChannel();
+ try {
+ fc.write(dst, -1);
+ throw new RuntimeException("Expected IAE not thrown");
+ } catch (IllegalArgumentException iae) {
+ // Correct result
+ } finally {
+ fos.close();
+ }
+ }
+
+ private static final int TEST4_NUM_BUFFERS = 3;
+
+ private static final int TEST4_BUF_CAP = Integer.MAX_VALUE / 2;
+
+ /**
+ * Test to see that vector write can return > Integer.MAX_VALUE
+ *
+ * Note that under certain circumstances disk space problems occur
+ * with this test. It typically relies upon adequate disk space and/or
+ * a Solaris disk space optimization where empty files take up less
+ * space than their logical size.
+ *
+ * Note that if this test fails it is not necessarily a violation of
+ * spec: the value returned by fc.write can be smaller than the number
+ * of bytes requested to write. It is testing an optimization that allows
+ * for larger return values.
+ */
+ static void test4() throws Exception {
+ // Only works on 64 bit Solaris
+ String osName = System.getProperty("os.name");
+ if (!osName.startsWith("SunOS"))
+ return;
+ String dataModel = System.getProperty("sun.arch.data.model");
+ if (!dataModel.startsWith("64"))
+ return;
+
+ File testFile = File.createTempFile("test4", null);
+ testFile.deleteOnExit();
+
+ FileChannel[] fcs = new FileChannel[TEST4_NUM_BUFFERS];
+
+ ByteBuffer[] dsts = new ByteBuffer[TEST4_NUM_BUFFERS];
+ // Map these buffers from a file so we don't run out of memory
+ for (int i=0; i<TEST4_NUM_BUFFERS; i++) {
+ File f = File.createTempFile("test4." + i, null);
+ f.deleteOnExit();
+ prepTest4File(f);
+ FileInputStream fis = new FileInputStream(f);
+ FileChannel fc = fis.getChannel();
+ MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0,
+ TEST4_BUF_CAP);
+ dsts[i] = mbb;
+ }
+
+ FileOutputStream fos = new FileOutputStream(testFile);
+ FileChannel fc = fos.getChannel();
+ try {
+ long bytesWritten = fc.write(dsts);
+ if (bytesWritten < Integer.MAX_VALUE) {
+ // Note: this is not a violation of the spec
+ throw new RuntimeException("Test 4 failed but wrote " +
+ bytesWritten);
+ }
+ } finally {
+ fc.close();
+ fos.close();
+ }
+ }
+
+ static void prepTest4File(File blah) throws Exception {
+ RandomAccessFile raf = new RandomAccessFile(blah, "rw");
+ FileChannel fc = raf.getChannel();
+ fc.write(ByteBuffer.wrap("Use the source!".getBytes()),
+ TEST4_BUF_CAP);
+ fc.close();
+ raf.close();
+ }
+
+}