test/jdk/java/nio/channels/FileChannel/Write.java

rev 59383 : [mq]: final

*** 1,7 ****
  /*
!  * 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2001, 2020, 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.
*** 36,50 ****
  
     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];
--- 36,45 ----
*** 121,195 ****
              // 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();
-     }
- 
  }
--- 116,121 ----