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

rev 59105 : imported patch corelibs

@@ -36,15 +36,10 @@
 
    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];

@@ -121,75 +116,6 @@
             // 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();
-    }
-
 }