/** Tests that seeking around a file cached locally works. */
@Test
public void seekAroundLocalBlock() throws IOException, TachyonException {
String uniqPath = PathUtils.uniqPath();
// The number of bytes per remote block read should be set to 100 in the before function
TachyonFile f = TachyonFSTestUtils.createByteFile(mTfs, uniqPath, 200, mWriteTachyon);
FileInStream is = mTfs.getInStream(f, mReadNoCache);
Assert.assertEquals(0, is.read());
is.seek(199);
Assert.assertEquals(199, is.read());
is.seek(99);
Assert.assertEquals(99, is.read());
is.close();
}
/**
* Test <code>void seek(long pos)</code>.
*
* @throws IOException
* @throws TachyonException
*/
@Test
public void seekTest() throws IOException, TachyonException {
String uniqPath = PathUtils.uniqPath();
for (int k = MIN_LEN + DELTA; k <= MAX_LEN; k += DELTA) {
TachyonFile f =
TachyonFSTestUtils.createByteFile(mTfs, uniqPath + "/file_" + k, k, mWriteUnderStore);
FileInStream is = mTfs.getInStream(f, mReadNoCache);
Assert.assertEquals(0, is.read());
is.seek(k / 3);
Assert.assertEquals(k / 3, is.read());
is.seek(k / 2);
Assert.assertEquals(k / 2, is.read());
is.seek(k / 4);
Assert.assertEquals(k / 4, is.read());
is.close();
}
}
/**
* Test <code>void seek(long pos)</code>. Validate the expected exception for seeking a position
* that is past block size.
*
* @throws IOException
* @throws TachyonException
*/
@Test
public void seekExceptionTest2() throws IOException, TachyonException {
mThrown.expect(IllegalArgumentException.class);
mThrown.expectMessage("Seek position is past EOF: 1, fileSize = 0");
String uniqPath = PathUtils.uniqPath();
for (int k = MIN_LEN; k <= MAX_LEN; k += DELTA) {
TachyonFile f =
TachyonFSTestUtils.createByteFile(mTfs, uniqPath + "/file_" + k, k, mWriteUnderStore);
FileInStream is = mTfs.getInStream(f, mReadNoCache);
try {
is.seek(k + 1);
} finally {
is.close();
}
}
}