/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.jdbc.datasource.lookup;
import java.util.HashMap;
import java.util.Map;
import javax.sql.DataSource;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import static org.junit.Assert.*;
/**
* @author Rick Evans
* @author Chris Beams
*/
public class MapDataSourceLookupTests {
private static final String DATA_SOURCE_NAME = "dataSource";
@Rule
public final ExpectedException exception = ExpectedException.none();
@Test
@SuppressWarnings({ "unchecked", "rawtypes" })
public void getDataSourcesReturnsUnmodifiableMap() throws Exception {
MapDataSourceLookup lookup = new MapDataSourceLookup();
Map dataSources = lookup.getDataSources();
exception.expect(UnsupportedOperationException.class);
dataSources.put("", "");
}
@Test
public void lookupSunnyDay() throws Exception {
Map<String, DataSource> dataSources = new HashMap<>();
StubDataSource expectedDataSource = new StubDataSource();
dataSources.put(DATA_SOURCE_NAME, expectedDataSource);
MapDataSourceLookup lookup = new MapDataSourceLookup();
lookup.setDataSources(dataSources);
DataSource dataSource = lookup.getDataSource(DATA_SOURCE_NAME);
assertNotNull("A DataSourceLookup implementation must *never* return null from getDataSource(): this one obviously (and incorrectly) is", dataSource);
assertSame(expectedDataSource, dataSource);
}
@Test
public void setDataSourcesIsAnIdempotentOperation() throws Exception {
Map<String, DataSource> dataSources = new HashMap<>();
StubDataSource expectedDataSource = new StubDataSource();
dataSources.put(DATA_SOURCE_NAME, expectedDataSource);
MapDataSourceLookup lookup = new MapDataSourceLookup();
lookup.setDataSources(dataSources);
lookup.setDataSources(null); // must be idempotent (i.e. the following lookup must still work);
DataSource dataSource = lookup.getDataSource(DATA_SOURCE_NAME);
assertNotNull("A DataSourceLookup implementation must *never* return null from getDataSource(): this one obviously (and incorrectly) is", dataSource);
assertSame(expectedDataSource, dataSource);
}
@Test
public void addingDataSourcePermitsOverride() throws Exception {
Map<String, DataSource> dataSources = new HashMap<>();
StubDataSource overridenDataSource = new StubDataSource();
StubDataSource expectedDataSource = new StubDataSource();
dataSources.put(DATA_SOURCE_NAME, overridenDataSource);
MapDataSourceLookup lookup = new MapDataSourceLookup();
lookup.setDataSources(dataSources);
lookup.addDataSource(DATA_SOURCE_NAME, expectedDataSource); // must override existing entry
DataSource dataSource = lookup.getDataSource(DATA_SOURCE_NAME);
assertNotNull("A DataSourceLookup implementation must *never* return null from getDataSource(): this one obviously (and incorrectly) is", dataSource);
assertSame(expectedDataSource, dataSource);
}
@Test
@SuppressWarnings({ "unchecked", "rawtypes" })
public void getDataSourceWhereSuppliedMapHasNonDataSourceTypeUnderSpecifiedKey() throws Exception {
Map dataSources = new HashMap();
dataSources.put(DATA_SOURCE_NAME, new Object());
MapDataSourceLookup lookup = new MapDataSourceLookup(dataSources);
exception.expect(ClassCastException.class);
lookup.getDataSource(DATA_SOURCE_NAME);
}
@Test
public void getDataSourceWhereSuppliedMapHasNoEntryForSpecifiedKey() throws Exception {
MapDataSourceLookup lookup = new MapDataSourceLookup();
exception.expect(DataSourceLookupFailureException.class);
lookup.getDataSource(DATA_SOURCE_NAME);
}
}