com.bigdata.io

Class TestShortPacker

java.lang.Object

junit.framework.Assert

junit.framework.TestCase

com.bigdata.io.TestShortPacker

All Implemented Interfaces:

junit.framework.Test

public class TestShortPacker
extends junit.framework.TestCase

Test suite for packing and unpacking unsigned short integers using the DataInputBuffer and the ByteArrayBuffer.

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields

Modifier and Type	Field and Description
static long	SIGN_MASK

Constructor Summary

Constructors

Constructor and Description
TestShortPacker()
TestShortPacker(String name)

Method Summary

Methods

Modifier and Type	Method and Description
static void	assertEquals(String msg, byte[] expected, byte[] actual)
void	doPackTest(short v, byte[] expected)
void	doStressTest(int ntrials, com.bigdata.io.TestShortPacker.ShortGenerator g) Run a stress test.
void	doUnpackTest(short expected, byte[] packed) Unpacks a short value.
void	test_compatiblity_DataOutputBuffer_ShortPacker() This test packs the data using a DataOutputBuffer and unpacks it using the ShortPacker.
void	test_compatiblity_ShortPacker_DataInputBuffer() This test packs the data using the ShortPacker and unpacks it using a DataInputBuffer.
void	test_rejectNegatives()
void	testHighBit()
void	testPack()
void	testStressRandom() Run a large #of random pack/unpack operations to sample the space while showing correctness on those samples.
void	testStressSequence() Run a large #of pack/unpack operations on a sequence of short values to demonstrate correctness in that sequence.
void	testUnpack()

Methods inherited from class junit.framework.TestCase

assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertFalse, assertFalse, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertTrue, assertTrue, countTestCases, createResult, fail, fail, failNotEquals, failNotSame, failSame, format, getName, run, run, runBare, runTest, setName, setUp, tearDown, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

SIGN_MASK

public static final long SIGN_MASK

See Also:

Constant Field Values

Constructor Detail

TestShortPacker

public TestShortPacker()

TestShortPacker

public TestShortPacker(String name)

Parameters:

name -

Method Detail

doUnpackTest

public void doUnpackTest(short expected,
                byte[] packed)
                  throws IOException

Unpacks a short value.

Parameters:

expected - The expected long value.

packed - The packed byte[].

Throws:

IOException - If there was not enough data.

junit.framework.AssertionFailedError - If there is too much data.

testUnpack

public void testUnpack()
                throws IOException

Throws:

IOException

doPackTest

public void doPackTest(short v,
              byte[] expected)
                throws IOException

Throws:

IOException

testPack

public void testPack()
              throws IOException

Throws:

IOException

test_rejectNegatives

public void test_rejectNegatives()
                          throws IOException

Throws:

IOException

testHighBit

public void testHighBit()

testStressSequence

public void testStressSequence()
                        throws IOException

Run a large #of pack/unpack operations on a sequence of short values to demonstrate correctness in that sequence. The sequence is the short values from -1 to Short.MAX_VALUE by one (dense coverage).

Throws:

IOException

testStressRandom

public void testStressRandom()
                      throws IOException

Run a large #of random pack/unpack operations to sample the space while showing correctness on those samples.

Throws:

IOException

doStressTest

public void doStressTest(int ntrials,
                com.bigdata.io.TestShortPacker.ShortGenerator g)
                  throws IOException

Run a stress test. Writes some information of possible interest onto System.err.

Parameters:

ntrials - #of trials.

g - Generator for the long values.

Throws:

IOException

assertEquals

public static void assertEquals(String msg,
                byte[] expected,
                byte[] actual)

test_compatiblity_ShortPacker_DataInputBuffer

public void test_compatiblity_ShortPacker_DataInputBuffer()
                                                   throws IOException

This test packs the data using the ShortPacker and unpacks it using a DataInputBuffer.

Throws:

IOException

test_compatiblity_DataOutputBuffer_ShortPacker

public void test_compatiblity_DataOutputBuffer_ShortPacker()
                                                    throws IOException

This test packs the data using a DataOutputBuffer and unpacks it using the ShortPacker.

Throws:

IOException