org.apache.derbyTesting.functionTests.tests.jdbcapi
Class ClobUpdatableReaderTest

java.lang.Object
  junit.framework.Assert
      junit.framework.TestCase
          org.apache.derbyTesting.junit.BaseTestCase
              org.apache.derbyTesting.junit.BaseJDBCTestCase
                  org.apache.derbyTesting.functionTests.tests.jdbcapi.ClobUpdatableReaderTest

All Implemented Interfaces:

junit.framework.Test

public class ClobUpdatableReaderTest
extends BaseJDBCTestCase

Test class to test UpdateableReader for Clob in embedded driver.

Field Summary

private java.lang.String

dummy

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

DEFAULT_DB_DIR, DERBY_LOG, ERRORSTACKTRACEFILE

Constructor Summary

ClobUpdatableReaderTest(java.lang.String name)

Method Summary

private int	assertCorrectChar(int prevChar, int nextChar) Asserts that the two specified characters follow each other in the modern latin lowercase alphabet.
private java.lang.String	getUnicodeString() Generates a (static) string containing various Unicode characters.
void	setUp() Setup the test.
static junit.framework.Test	suite()
protected void	tearDown() Cleans up the database.
void	testMultiplexedOperationProblem() Tests that the Clob can handle multiple streams and the length call multiplexed.
void	testUpdateableReader() Tests updates on reader.
void	testUpdateableStoreReader() Test updating a large clob

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

assertCallError, assertCheckTable, assertCompileError, assertEquals, assertEquals, assertEquals, assertEquivalentDataType, assertGetIntError, assertNextError, assertPreparedStatementError, assertSQLExceptionEquals, assertSQLState, assertSQLState, assertStatementError, assertStatementError, assertStatementError, assertStatementError, assertTableRowCount, assertUpdateCount, assertUpdateCount, checkAllConsistency, checkEstimatedRowCount, commit, createStatement, createStatement, createStatement, dropTable, dropTable, getConnection, getDatabaseProperty, getLastSQLException, initializeConnection, openConnection, openDefaultConnection, openDefaultConnection, openUserConnection, prepareCall, prepareCall, prepareCall, prepareStatement, prepareStatement, prepareStatement, prepareStatement, prepareStatement, prepareStatement, rollback, runScript, runScript, runSQLCommands, setAutoCommit, usingDB2Client, usingDerbyNetClient, usingEmbedded

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, 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

dummy

private final java.lang.String dummy

See Also:

Constant Field Values

Constructor Detail

ClobUpdatableReaderTest

public ClobUpdatableReaderTest(java.lang.String name)

Method Detail

testUpdateableStoreReader

public void testUpdateableStoreReader()
                               throws java.lang.Exception

Test updating a large clob

Throws:

java.lang.Exception

testUpdateableReader

public void testUpdateableReader()
                          throws java.lang.Exception

Tests updates on reader.

Throws:

java.lang.Exception

testMultiplexedOperationProblem

public void testMultiplexedOperationProblem()
                                     throws java.io.IOException,
                                            java.sql.SQLException

Tests that the Clob can handle multiple streams and the length call multiplexed.

This test was written after bug DERBY-2806 was reported, where getting the length of the Clob after fetching a stream from it would exhaust the stream and cause the next read to return -1.

The test is written to work on a Clob that operates on streams from the store, which currently means that it must be over a certain size and that no modifying methods can be called on it.

Throws:

java.io.IOException

java.sql.SQLException

assertCorrectChar

private int assertCorrectChar(int prevChar,
                              int nextChar)
                       throws java.io.IOException

Asserts that the two specified characters follow each other in the modern latin lowercase alphabet.

Throws:

java.io.IOException

getUnicodeString

private java.lang.String getUnicodeString()

Generates a (static) string containing various Unicode characters.

Returns:

a string with ASCII and non-ASCII characters

setUp

public void setUp()
           throws java.lang.Exception

Setup the test.

Overrides:

setUp in class junit.framework.TestCase

Throws:

java.sql.SQLException - if database access fails

java.lang.Exception

suite

public static junit.framework.Test suite()

tearDown

protected void tearDown()
                 throws java.lang.Exception

Cleans up the database.

Overrides:

tearDown in class BaseJDBCTestCase

Throws:

java.lang.Exception