org.apache.derbyTesting.functionTests.tests.derbynet
Class ByteArrayCombinerStreamTest

java.lang.Object
  junit.framework.Assert
      junit.framework.TestCase
          org.apache.derbyTesting.junit.BaseTestCase
              org.apache.derbyTesting.functionTests.tests.derbynet.ByteArrayCombinerStreamTest

All Implemented Interfaces:

junit.framework.Test

public class ByteArrayCombinerStreamTest
extends BaseTestCase

Test functionality of ByteArrayCombinerStream.

Field Summary

private org.apache.derby.client.am.ByteArrayCombinerStream	combiner
private static byte[]	defaultArray

Fields inherited from class org.apache.derbyTesting.junit.BaseTestCase

DEFAULT_DB_DIR, DERBY_LOG, ERRORSTACKTRACEFILE

Constructor Summary

ByteArrayCombinerStreamTest(java.lang.String name)

Method Summary

static junit.framework.Test	suite()
void	testCombineAvailable4bytes()
void	testCombineAvailableNull()
void	testCombineNullRead()
void	testCombineNullReadArray()
void	testCombineOneArray()
void	testCombineWithExtraEmptyByteArray() Make sure an extra "empty" array doesn't cause errors.
void	testCominbe100SmallArrays()
void	testNegativeLengthArgument() Make sure an exception is thrown if a negative length is specified.
void	testNegativeValueInDataCausesEndOfStream() Demonstrate that the stream does not change negative values in the underlying data.
void	testTooLittleDataNoCombine() Make sure an exception is thrown if there is less data available than the specified length.
void	testTooLittleDataWithCombine() Make sure an exception is thrown if there is less data available than the specified length.
void	testTruncateDataFromOneArray()
void	testTruncateDataFromTwoArrays()

Methods inherited from class org.apache.derbyTesting.junit.BaseTestCase

alarm, assertEquals, assertEquals, assertEquals, assertExecJavaCmdAsExpected, assertSecurityManager, assertThrowableEquals, execJavaCmd, fail, getFailureFolder, getJavaExecutableName, getSystemProperty, getTestConfiguration, getTestResource, openTestResource, println, printStackTrace, readProcessOutput, removeDirectory, removeDirectory, removeSystemProperty, runBare, setSystemProperty, traceit

Methods inherited from class junit.framework.TestCase

countTestCases, createResult, getName, run, run, runTest, setName, setUp, tearDown, toString

Methods inherited from class junit.framework.Assert

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, fail, fail

Methods inherited from class java.lang.Object

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

Field Detail

defaultArray

private static final byte[] defaultArray

combiner

private org.apache.derby.client.am.ByteArrayCombinerStream combiner

Constructor Detail

ByteArrayCombinerStreamTest

public ByteArrayCombinerStreamTest(java.lang.String name)

Method Detail

testCombineNullRead

public void testCombineNullRead()
                         throws java.io.IOException

Throws:

java.io.IOException

testCombineNullReadArray

public void testCombineNullReadArray()
                              throws java.io.IOException

Throws:

java.io.IOException

testCombineAvailableNull

public void testCombineAvailableNull()
                              throws java.io.IOException

Throws:

java.io.IOException

testCombineAvailable4bytes

public void testCombineAvailable4bytes()
                                throws java.io.IOException

Throws:

java.io.IOException

testCombineWithExtraEmptyByteArray

public void testCombineWithExtraEmptyByteArray()
                                        throws java.io.IOException

Make sure an extra "empty" array doesn't cause errors. This test is based on knowledge of the implementation, where an extra byte array was not removed during the reducation process. This can cause nextArray to not return null when it should, causing an ArrayIndexOutOfBoundsException. This bug was corrected by DERBY-1417.

Throws:

java.io.IOException

testCombineOneArray

public void testCombineOneArray()
                         throws java.io.IOException

Throws:

java.io.IOException

testCominbe100SmallArrays

public void testCominbe100SmallArrays()
                               throws java.io.IOException

Throws:

java.io.IOException

testTruncateDataFromOneArray

public void testTruncateDataFromOneArray()
                                  throws java.io.IOException

Throws:

java.io.IOException

testTruncateDataFromTwoArrays

public void testTruncateDataFromTwoArrays()
                                   throws java.io.IOException

Throws:

java.io.IOException

testTooLittleDataNoCombine

public void testTooLittleDataNoCombine()

Make sure an exception is thrown if there is less data available than the specified length.

testTooLittleDataWithCombine

public void testTooLittleDataWithCombine()

Make sure an exception is thrown if there is less data available than the specified length.

testNegativeLengthArgument

public void testNegativeLengthArgument()

Make sure an exception is thrown if a negative length is specified.

testNegativeValueInDataCausesEndOfStream

public void testNegativeValueInDataCausesEndOfStream()
                                              throws java.io.IOException

Demonstrate that the stream does not change negative values in the underlying data. This can cause code to believe the stream is exhausted even though it is not.

Throws:

java.io.IOException

suite

public static junit.framework.Test suite()