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/*
*
* The DbUnit Database Testing Framework
* Copyright (C)2002-2008, DbUnit.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
package org.dbunit.assertion;
import java.sql.SQLException;
import java.util.Arrays;
import org.dbunit.Assertion;
import org.dbunit.DatabaseUnitException;
import org.dbunit.database.IDatabaseConnection;
import org.dbunit.dataset.Column;
import org.dbunit.dataset.Columns;
import org.dbunit.dataset.DataSetException;
import org.dbunit.dataset.IDataSet;
import org.dbunit.dataset.ITable;
import org.dbunit.dataset.ITableMetaData;
import org.dbunit.dataset.datatype.DataType;
import org.dbunit.dataset.datatype.UnknownDataType;
import org.dbunit.dataset.filter.DefaultColumnFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Default implementation of DbUnit assertions, based on the original methods present
* at {@link Assertion}
*
* @author Felipe Leme ([email protected])
* @author gommma (gommma AT users.sourceforge.net)
* @version $Revision$ $Date$
* @since 2.4.0
*/
public class DbUnitAssert
{
/**
* Logger for this class
*/
private static final Logger logger = LoggerFactory.getLogger(DbUnitAssert.class);
private FailureFactory junitFailureFactory = getJUnitFailureFactory();
/**
* Default constructor
*/
public DbUnitAssert()
{
}
/**
* Compare one table present in two datasets ignoring specified columns.
*
* @param expectedDataset
* First dataset.
* @param actualDataset
* Second dataset.
* @param tableName
* Table name of the table to be compared.
* @param ignoreCols
* Columns to be ignored in comparison.
* @throws org.dbunit.DatabaseUnitException
* If an error occurs.
*/
public void assertEqualsIgnoreCols(final IDataSet expectedDataset,
final IDataSet actualDataset, final String tableName,
final String[] ignoreCols) throws DatabaseUnitException
{
if (logger.isDebugEnabled())
logger.debug(
"assertEqualsIgnoreCols(expectedDataset={}, actualDataset={}, tableName={}, ignoreCols={}) - start",
new Object[] { expectedDataset, actualDataset, tableName,
Arrays.asList(ignoreCols) });
assertEqualsIgnoreCols(expectedDataset.getTable(tableName), actualDataset
.getTable(tableName), ignoreCols);
}
/**
* Compare the given tables ignoring specified columns.
*
* @param expectedTable
* First table.
* @param actualTable
* Second table.
* @param ignoreCols
* Columns to be ignored in comparison.
* @throws org.dbunit.DatabaseUnitException
* If an error occurs.
*/
public void assertEqualsIgnoreCols(final ITable expectedTable,
final ITable actualTable, final String[] ignoreCols)
throws DatabaseUnitException
{
if (logger.isDebugEnabled())
logger
.debug(
"assertEqualsIgnoreCols(expectedTable={}, actualTable={}, ignoreCols={}) - start",
new Object[] {expectedTable, actualTable,
Arrays.asList(ignoreCols)});
final ITable expectedTableFiltered = DefaultColumnFilter
.excludedColumnsTable(expectedTable, ignoreCols);
final ITable actualTableFiltered = DefaultColumnFilter
.excludedColumnsTable(actualTable, ignoreCols);
assertEquals(expectedTableFiltered, actualTableFiltered);
}
/**
* Compare a table from a dataset with a table generated from an sql query.
*
* @param expectedDataset
* Dataset to retrieve the first table from.
* @param connection
* Connection to use for the SQL statement.
* @param sqlQuery
* SQL query that will build the data in returned second table rows.
* @param tableName
* Table name of the table to compare
* @param ignoreCols
* Columns to be ignored in comparison.
* @throws DatabaseUnitException
* If an error occurs while performing the comparison.
* @throws java.sql.SQLException
* If an SQL error occurs.
*/
public void assertEqualsByQuery(final IDataSet expectedDataset,
final IDatabaseConnection connection, final String sqlQuery,
final String tableName, final String[] ignoreCols)
throws DatabaseUnitException, SQLException
{
if (logger.isDebugEnabled())
logger.debug(
"assertEqualsByQuery(expectedDataset={}, connection={}, tableName={}, sqlQuery={}, ignoreCols={}) - start",
new Object[] { expectedDataset, connection, tableName, sqlQuery,
ignoreCols });
ITable expectedTable = expectedDataset.getTable(tableName);
assertEqualsByQuery(expectedTable, connection, tableName, sqlQuery,
ignoreCols);
}
/**
* Compare a table with a table generated from an sql query.
*
* @param expectedTable
* Table containing all expected results.
* @param connection
* Connection to use for the SQL statement.
* @param tableName
* The name of the table to query from the database
* @param sqlQuery
* SQL query that will build the data in returned second table rows.
* @param ignoreCols
* Columns to be ignored in comparison.
* @throws DatabaseUnitException
* If an error occurs while performing the comparison.
* @throws java.sql.SQLException
* If an SQL error occurs.
*/
public void assertEqualsByQuery(final ITable expectedTable,
final IDatabaseConnection connection, final String tableName,
final String sqlQuery, final String[] ignoreCols)
throws DatabaseUnitException, SQLException
{
if (logger.isDebugEnabled())
logger.debug(
"assertEqualsByQuery(expectedTable={}, connection={}, tableName={}, sqlQuery={}, ignoreCols={}) - start",
new Object[] { expectedTable, connection, tableName, sqlQuery,
ignoreCols });
ITable expected = DefaultColumnFilter.excludedColumnsTable(expectedTable,
ignoreCols);
ITable queriedTable = connection.createQueryTable(tableName, sqlQuery);
ITable actual = DefaultColumnFilter.excludedColumnsTable(queriedTable,
ignoreCols);
assertEquals(expected, actual);
}
/**
* Asserts that the two specified dataset are equals. This method ignore the
* tables order.
*/
public void assertEquals(IDataSet expectedDataSet, IDataSet actualDataSet)
throws DatabaseUnitException
{
logger.debug("assertEquals(expectedDataSet={}, actualDataSet={}) - start",
expectedDataSet, actualDataSet);
assertEquals(expectedDataSet, actualDataSet, null);
}
/**
* Asserts that the two specified dataset are equals. This method ignore the
* tables order.
*
* @since 2.4
*/
public void assertEquals(IDataSet expectedDataSet, IDataSet actualDataSet,
FailureHandler failureHandler) throws DatabaseUnitException
{
if (logger.isDebugEnabled())
logger.debug(
"assertEquals(expectedDataSet={}, actualDataSet={}, failureHandler={}) - start",
new Object[] { expectedDataSet, actualDataSet, failureHandler });
// do not continue if same instance
if (expectedDataSet == actualDataSet) {
return;
}
if (failureHandler == null) {
logger.debug("FailureHandler is null. Using default implementation");
failureHandler = getDefaultFailureHandler();
}
String[] expectedNames = getSortedTableNames(expectedDataSet);
String[] actualNames = getSortedTableNames(actualDataSet);
// tables count
if (expectedNames.length != actualNames.length) {
throw failureHandler.createFailure("table count", String
.valueOf(expectedNames.length), String.valueOf(actualNames.length));
}
// table names in no specific order
for (int i = 0; i < expectedNames.length; i++) {
if (!actualNames[i].equals(expectedNames[i])) {
throw failureHandler.createFailure("tables", Arrays.asList(
expectedNames).toString(), Arrays.asList(actualNames).toString());
}
}
// tables
for (int i = 0; i < expectedNames.length; i++) {
String name = expectedNames[i];
assertEquals(expectedDataSet.getTable(name), actualDataSet.getTable(name), failureHandler);
}
}
/**
* Asserts that the two specified tables are equals. This method ignores the
* table names, the columns order, the columns data type and which columns are
* composing the primary keys.
*
* @param expectedTable
* Table containing all expected results.
* @param actualTable
* Table containing all actual results.
* @throws DatabaseUnitException
*/
public void assertEquals(ITable expectedTable, ITable actualTable)
throws DatabaseUnitException
{
logger.debug("assertEquals(expectedTable={}, actualTable={}) - start",
expectedTable, actualTable);
assertEquals(expectedTable, actualTable, (Column[]) null);
}
/**
* Asserts that the two specified tables are equals. This method ignores the
* table names, the columns order, the columns data type and which columns are
* composing the primary keys.
* Example:
*
* @param expectedTable
* Table containing all expected results.
* @param actualTable
* Table containing all actual results.
* @param additionalColumnInfo
* The columns to be printed out if the assert fails because of a
* data mismatch. Provides some additional column values that may be
* useful to quickly identify the columns for which the mismatch
* occurred (for example a primary key column). Can be
* null
* @throws DatabaseUnitException
*/
public void assertEquals(ITable expectedTable, ITable actualTable,
Column[] additionalColumnInfo) throws DatabaseUnitException
{
logger.debug(
"assertEquals(expectedTable={}, actualTable={}, additionalColumnInfo={}) - start",
new Object[] { expectedTable, actualTable, additionalColumnInfo });
FailureHandler failureHandler = null;
if (additionalColumnInfo != null)
failureHandler = getDefaultFailureHandler(additionalColumnInfo);
assertEquals(expectedTable, actualTable, failureHandler);
}
/**
* Asserts that the two specified tables are equals. This method ignores the
* table names, the columns order, the columns data type and which columns are
* composing the primary keys.
* Example:
*
* @param expectedTable
* Table containing all expected results.
* @param actualTable
* Table containing all actual results.
* @param failureHandler
* The failure handler used if the assert fails because of a data
* mismatch. Provides some additional information that may be useful
* to quickly identify the rows for which the mismatch occurred (for
* example by printing an additional primary key column). Can be
* null
* @throws DatabaseUnitException
* @since 2.4
*/
public void assertEquals(ITable expectedTable, ITable actualTable,
FailureHandler failureHandler) throws DatabaseUnitException
{
logger.trace("assertEquals(expectedTable, actualTable, failureHandler) - start");
logger.debug("assertEquals: expectedTable={}", expectedTable);
logger.debug("assertEquals: actualTable={}", actualTable);
logger.debug("assertEquals: failureHandler={}", failureHandler);
// Do not continue if same instance
if (expectedTable == actualTable) {
logger.debug(
"The given tables reference the same object. Will return immediately. (Table={})",
expectedTable);
return;
}
if (failureHandler == null) {
logger.debug("FailureHandler is null. Using default implementation");
failureHandler = getDefaultFailureHandler();
}
ITableMetaData expectedMetaData = expectedTable.getTableMetaData();
ITableMetaData actualMetaData = actualTable.getTableMetaData();
String expectedTableName = expectedMetaData.getTableName();
// Verify row count
int expectedRowsCount = expectedTable.getRowCount();
int actualRowsCount = 0;
boolean skipRowComparison = false;
try {
actualRowsCount = actualTable.getRowCount();
} catch(UnsupportedOperationException exception) {
skipRowComparison = true;
}
if(!skipRowComparison) {
if (expectedRowsCount != actualRowsCount) {
String msg = "row count (table=" + expectedTableName + ")";
Error error =
failureHandler.createFailure(msg, String
.valueOf(expectedRowsCount), String
.valueOf(actualRowsCount));
logger.error(error.toString());
throw error;
}
// if both tables are empty, it is not necessary to compare columns, as
// such comparison can fail if column metadata is different (which
// could occurs when comparing empty tables)
if (expectedRowsCount == 0 && actualRowsCount == 0) {
logger.debug("Tables are empty, hence equals.");
return;
}
}
// Put the columns into the same order
Column[] expectedColumns = Columns.getSortedColumns(expectedMetaData);
Column[] actualColumns = Columns.getSortedColumns(actualMetaData);
// Verify columns
Columns.ColumnDiff columnDiff =
Columns.getColumnDiff(expectedMetaData, actualMetaData);
if (columnDiff.hasDifference()) {
String message = columnDiff.getMessage();
Error error =
failureHandler.createFailure(message, Columns
.getColumnNamesAsString(expectedColumns), Columns
.getColumnNamesAsString(actualColumns));
logger.error(error.toString());
throw error;
}
// Get the datatypes to be used for comparing the sorted columns
ComparisonColumn[] comparisonCols = getComparisonColumns(expectedTableName,
expectedColumns, actualColumns, failureHandler);
// Finally compare the data
compareData(expectedTable, actualTable, comparisonCols, failureHandler);
}
/**
* @return The default failure handler
* @since 2.4
*/
protected FailureHandler getDefaultFailureHandler()
{
return getDefaultFailureHandler(null);
}
/**
* @return The default failure handler
* @since 2.4
*/
protected FailureHandler getDefaultFailureHandler(Column[] additionalColumnInfo)
{
DefaultFailureHandler failureHandler = new DefaultFailureHandler(additionalColumnInfo);
if (junitFailureFactory != null) {
failureHandler.setFailureFactory(junitFailureFactory);
}
return failureHandler;
}
/**
* @return the JUnitFailureFactory if JUnit is on the classpath or null if
* JUnit is not on the classpath.
*/
private FailureFactory getJUnitFailureFactory()
{
try {
Class.forName("junit.framework.Assert");
// JUnit available
return new JUnitFailureFactory();
}
catch (ClassNotFoundException e) {
// JUnit not available on the classpath return null
logger.debug("JUnit does not seem to be on the classpath. " + e);
}
return null;
}
/**
* @param expectedTable
* Table containing all expected results.
* @param actualTable
* Table containing all actual results.
* @param comparisonCols
* The columns to be compared, also including the correct
* {@link DataType}s for comparison
* @param failureHandler
* The failure handler used if the assert fails because of a data
* mismatch. Provides some additional information that may be useful
* to quickly identify the rows for which the mismatch occurred (for
* example by printing an additional primary key column). Must not be
* null at this stage
* @throws DataSetException
* @since 2.4
*/
protected void compareData(ITable expectedTable, ITable actualTable,
ComparisonColumn[] comparisonCols, FailureHandler failureHandler)
throws DataSetException
{
logger.debug("compareData(expectedTable={}, actualTable={}, "
+ "comparisonCols={}, failureHandler={}) - start",
new Object[] {expectedTable, actualTable, comparisonCols,
failureHandler});
if (expectedTable == null) {
throw new NullPointerException(
"The parameter 'expectedTable' must not be null");
}
if (actualTable == null) {
throw new NullPointerException(
"The parameter 'actualTable' must not be null");
}
if (comparisonCols == null) {
throw new NullPointerException(
"The parameter 'comparisonCols' must not be null");
}
if (failureHandler == null) {
throw new NullPointerException(
"The parameter 'failureHandler' must not be null");
}
// iterate over all rows
for (int i = 0; i < expectedTable.getRowCount(); i++) {
// iterate over all columns of the current row
for (int j = 0; j < comparisonCols.length; j++) {
ComparisonColumn compareColumn = comparisonCols[j];
String columnName = compareColumn.getColumnName();
DataType dataType = compareColumn.getDataType();
Object expectedValue = expectedTable.getValue(i, columnName);
Object actualValue = actualTable.getValue(i, columnName);
// Compare the values
if (skipCompare(columnName, expectedValue, actualValue)) {
if (logger.isTraceEnabled()) {
logger.trace( "ignoring comparison " + expectedValue + "=" +
actualValue + " on column " + columnName);
}
continue;
}
if (dataType.compare(expectedValue, actualValue) != 0) {
Difference diff = new Difference(
expectedTable, actualTable,
i, columnName,
expectedValue, actualValue);
// Handle the difference (throw error immediately or something else)
failureHandler.handle(diff);
}
}
}
}
/**
* Method to last-minute intercept the comparison of a single
* expected and actual value. Designed to be overridden in order
* to skip cell comparison by specific cell values.
*
* @param columnName The column being compared
* @param expectedValue The expected value to be compared
* @param actualValue The actual value to be compared
* @return false always so that the comparison is never skipped
* @since 2.4
*/
protected boolean skipCompare(String columnName, Object expectedValue, Object actualValue)
{
return false;
}
/**
* @param expectedTableName
* @param expectedColumns
* @param actualColumns
* @param failureHandler
* The {@link FailureHandler} to be used when no datatype can be
* determined
* @return The columns to be used for the assertion, including the correct
* datatype
* @since 2.4
*/
protected ComparisonColumn[] getComparisonColumns(String expectedTableName,
Column[] expectedColumns, Column[] actualColumns,
FailureHandler failureHandler)
{
ComparisonColumn[] result = new ComparisonColumn[expectedColumns.length];
for (int j = 0; j < expectedColumns.length; j++) {
Column expectedColumn = expectedColumns[j];
Column actualColumn = actualColumns[j];
result[j] = new ComparisonColumn(expectedTableName, expectedColumn,
actualColumn, failureHandler);
}
return result;
}
protected String[] getSortedTableNames(IDataSet dataSet)
throws DataSetException
{
logger.debug("getSortedTableNames(dataSet={}) - start", dataSet);
String[] names = dataSet.getTableNames();
if( !dataSet.isCaseSensitiveTableNames() ) {
for (int i = 0; i < names.length; i++) {
names[i] = names[i].toUpperCase();
}
}
Arrays.sort(names);
return names;
}
/**
* Represents a single column to be used for the comparison of table data. It
* contains the {@link DataType} to be used for comparing the given column.
* This {@link DataType} matches the expected and actual column's datatype.
*
* @author gommma (gommma AT users.sourceforge.net)
* @author Last changed by: $Author: gommma $
* @version $Revision: 864 $ $Date: 2008-11-07 06:27:26 -0800 (Fri, 07 Nov
* 2008) $
* @since 2.4.0
*/
public static class ComparisonColumn
{
/**
* Logger for this class
*/
private static final Logger logger = LoggerFactory
.getLogger(ComparisonColumn.class);
private String columnName;
private DataType dataType;
/**
* @param tableName
* The table name which is only needed for debugging output
* @param expectedColumn
* The expected column needed to resolve the {@link DataType} to
* use for the actual comparison
* @param actualColumn
* The actual column needed to resolve the {@link DataType} to use
* for the actual comparison
* @param failureHandler
* The {@link FailureHandler} to be used when no datatype can be
* determined
*/
public ComparisonColumn(String tableName, Column expectedColumn,
Column actualColumn, FailureHandler failureHandler) {
super();
this.columnName = expectedColumn.getColumnName();
this.dataType = getComparisonDataType(tableName, expectedColumn,
actualColumn, failureHandler);
}
/**
* @return The column actually being compared
*/
public String getColumnName() {
return this.columnName;
}
/**
* @return The {@link DataType} to use for the actual comparison
*/
public DataType getDataType() {
return this.dataType;
}
/**
* @param tableName
* The table name which is only needed for debugging output
* @param expectedColumn
* @param actualColumn
* @param failureHandler
* The {@link FailureHandler} to be used when no datatype can be
* determined
* @return The dbunit {@link DataType} to use for comparing the given
* column.
*/
private DataType getComparisonDataType(String tableName,
Column expectedColumn, Column actualColumn,
FailureHandler failureHandler) {
if (logger.isDebugEnabled())
logger.debug(
"getComparisonDataType(tableName={}, expectedColumn={}, actualColumn={}, failureHandler={}) - start",
new Object[] { tableName, expectedColumn, actualColumn,
failureHandler });
DataType expectedDataType = expectedColumn.getDataType();
DataType actualDataType = actualColumn.getDataType();
// The two columns have different data type
if (!expectedDataType.getClass().isInstance(actualDataType)) {
// Expected column data type is unknown, use actual column data type
if (expectedDataType instanceof UnknownDataType) {
return actualDataType;
}
// Actual column data type is unknown, use expected column data type
if (actualDataType instanceof UnknownDataType) {
return expectedDataType;
}
// Impossible to determine which data type to use
String msg = "Incompatible data types: (table=" + tableName + ", col="
+ expectedColumn.getColumnName() + ")";
throw failureHandler.createFailure(msg, String
.valueOf(expectedDataType), String.valueOf(actualDataType));
}
// Both columns have same data type, return any one of them
return expectedDataType;
}
}
}
