Source Code Cross Referenced for TestDatabaseConfiguration.java in  » Library » Apache-commons-configuration-1.4-src » org » apache » commons » configuration » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Library » Apache commons configuration 1.4 src » org.apache.commons.configuration 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one or more
003:         * contributor license agreements.  See the NOTICE file distributed with
004:         * this work for additional information regarding copyright ownership.
005:         * The ASF licenses this file to You under the Apache License, Version 2.0
006:         * (the "License"); you may not use this file except in compliance with
007:         * the License.  You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:
018:        package org.apache.commons.configuration;
019:
020:        import java.io.FileInputStream;
021:        import java.sql.Connection;
022:        import java.sql.SQLException;
023:        import java.util.Iterator;
024:        import java.util.List;
025:
026:        import javax.sql.DataSource;
027:
028:        import junit.framework.TestCase;
029:
030:        import org.apache.commons.configuration.event.ConfigurationErrorEvent;
031:        import org.apache.commons.configuration.event.ConfigurationErrorListener;
032:        import org.apache.commons.configuration.test.HsqlDB;
033:        import org.apache.commons.dbcp.BasicDataSource;
034:        import org.dbunit.database.DatabaseConnection;
035:        import org.dbunit.database.IDatabaseConnection;
036:        import org.dbunit.dataset.IDataSet;
037:        import org.dbunit.dataset.xml.XmlDataSet;
038:        import org.dbunit.operation.DatabaseOperation;
039:
040:        /**
041:         * Test for database stored configurations.  Note, when running this Unit
042:         * Test in Eclipse it sometimes takes a couple tries. Otherwise you may get
043:         * database is already in use by another process errors.
044:         *
045:         * @version $Revision: 514234 $, $Date: 2007-03-03 21:18:14 +0100 (Sa, 03 Mrz 2007) $
046:         */
047:        public class TestDatabaseConfiguration extends TestCase {
048:            public final String DATABASE_DRIVER = "org.hsqldb.jdbcDriver";
049:            public final String DATABASE_URL = "jdbc:hsqldb:target/test-classes/testdb";
050:            public final String DATABASE_USERNAME = "sa";
051:            public final String DATABASE_PASSWORD = "";
052:
053:            /** Constant for the configuration table.*/
054:            private static final String TABLE = "configuration";
055:
056:            /** Constant for the multi configuration table.*/
057:            private static final String TABLE_MULTI = "configurations";
058:
059:            /** Constant for the column with the keys.*/
060:            private static final String COL_KEY = "key";
061:
062:            /** Constant for the column with the values.*/
063:            private static final String COL_VALUE = "value";
064:
065:            /** Constant for the column with the configuration name.*/
066:            private static final String COL_NAME = "name";
067:
068:            /** Constant for the name of the test configuration.*/
069:            private static final String CONFIG_NAME = "test";
070:
071:            private static HsqlDB hsqlDB = null;
072:
073:            private DataSource datasource;
074:
075:            /** An error listener for testing whether internal errors occurred.*/
076:            private TestErrorListener listener;
077:
078:            protected void setUp() throws Exception {
079:                /*
080:                 * Thread.sleep may or may not help with the database is already in
081:                 * use exception.
082:                 */
083:                //Thread.sleep(1000);
084:                // set up the datasource
085:                if (hsqlDB == null) {
086:                    hsqlDB = new HsqlDB(DATABASE_URL, DATABASE_DRIVER,
087:                            "conf/testdb.script");
088:                }
089:
090:                BasicDataSource datasource = new BasicDataSource();
091:                datasource.setDriverClassName(DATABASE_DRIVER);
092:                datasource.setUrl(DATABASE_URL);
093:                datasource.setUsername(DATABASE_USERNAME);
094:                datasource.setPassword(DATABASE_PASSWORD);
095:
096:                this .datasource = datasource;
097:
098:                // prepare the database
099:                IDatabaseConnection connection = new DatabaseConnection(
100:                        datasource.getConnection());
101:                IDataSet dataSet = new XmlDataSet(new FileInputStream(
102:                        "conf/dataset.xml"));
103:
104:                try {
105:                    DatabaseOperation.CLEAN_INSERT.execute(connection, dataSet);
106:                } finally {
107:                    connection.close();
108:                }
109:            }
110:
111:            protected void tearDown() throws Exception {
112:                datasource.getConnection().commit();
113:                datasource.getConnection().close();
114:
115:                // if an error listener is defined, we check whether an error occurred
116:                if (listener != null) {
117:                    assertEquals("An internal error occurred", 0,
118:                            listener.errorCount);
119:                }
120:                super .tearDown();
121:            }
122:
123:            /**
124:             * Creates a database configuration with default values.
125:             *
126:             * @return the configuration
127:             */
128:            private PotentialErrorDatabaseConfiguration setUpConfig() {
129:                return new PotentialErrorDatabaseConfiguration(datasource,
130:                        TABLE, COL_KEY, COL_VALUE);
131:            }
132:
133:            /**
134:             * Creates a database configuration that supports multiple configurations in
135:             * a table with default values.
136:             *
137:             * @return the configuration
138:             */
139:            private DatabaseConfiguration setUpMultiConfig() {
140:                return new DatabaseConfiguration(datasource, TABLE_MULTI,
141:                        COL_NAME, COL_KEY, COL_VALUE, CONFIG_NAME);
142:            }
143:
144:            /**
145:             * Creates an error listener and adds it to the specified configuration.
146:             *
147:             * @param config the configuration
148:             */
149:            private void setUpErrorListener(
150:                    PotentialErrorDatabaseConfiguration config) {
151:                // remove log listener to avoid exception longs
152:                config.removeErrorListener((ConfigurationErrorListener) config
153:                        .getErrorListeners().iterator().next());
154:                listener = new TestErrorListener();
155:                config.addErrorListener(listener);
156:                config.failOnConnect = true;
157:            }
158:
159:            /**
160:             * Prepares a test for a database error. Sets up a config and registers an
161:             * error listener.
162:             *
163:             * @return the initialized configuration
164:             */
165:            private PotentialErrorDatabaseConfiguration setUpErrorConfig() {
166:                PotentialErrorDatabaseConfiguration config = setUpConfig();
167:                setUpErrorListener(config);
168:                return config;
169:            }
170:
171:            /**
172:             * Checks the error listener for an expected error. The properties of the
173:             * error event will be compared with the expected values.
174:             *
175:             * @param type the expected type of the error event
176:             * @param key the expected property key
177:             * @param value the expected property value
178:             */
179:            private void checkErrorListener(int type, String key, Object value) {
180:                assertEquals("Wrong number of errors", 1, listener.errorCount);
181:                assertEquals("Wrong event type", type, listener.event.getType());
182:                assertTrue(
183:                        "Wrong event source",
184:                        listener.event.getSource() instanceof  DatabaseConfiguration);
185:                assertTrue("Wrong exception",
186:                        listener.event.getCause() instanceof  SQLException);
187:                assertTrue("Wrong property key", (key == null) ? listener.event
188:                        .getPropertyName() == null : key.equals(listener.event
189:                        .getPropertyName()));
190:                assertTrue(
191:                        "Wrong property value",
192:                        (value == null) ? listener.event.getPropertyValue() == null
193:                                : value.equals(listener.event
194:                                        .getPropertyValue()));
195:                listener = null; // mark as checked
196:            }
197:
198:            public void testAddPropertyDirectSingle() {
199:                DatabaseConfiguration config = setUpConfig();
200:                config.addPropertyDirect("key", "value");
201:
202:                assertTrue("missing property", config.containsKey("key"));
203:            }
204:
205:            public void testAddPropertyDirectMultiple() {
206:                DatabaseConfiguration config = setUpMultiConfig();
207:                config.addPropertyDirect("key", "value");
208:
209:                assertTrue("missing property", config.containsKey("key"));
210:            }
211:
212:            public void testAddNonStringProperty() {
213:                DatabaseConfiguration config = setUpConfig();
214:                config.addPropertyDirect("boolean", Boolean.TRUE);
215:
216:                assertTrue("missing property", config.containsKey("boolean"));
217:            }
218:
219:            public void testGetPropertyDirectSingle() {
220:                Configuration config = setUpConfig();
221:
222:                assertEquals("property1", "value1", config.getProperty("key1"));
223:                assertEquals("property2", "value2", config.getProperty("key2"));
224:                assertEquals("unknown property", null, config
225:                        .getProperty("key3"));
226:            }
227:
228:            public void testGetPropertyDirectMultiple() {
229:                Configuration config = setUpMultiConfig();
230:
231:                assertEquals("property1", "value1", config.getProperty("key1"));
232:                assertEquals("property2", "value2", config.getProperty("key2"));
233:                assertEquals("unknown property", null, config
234:                        .getProperty("key3"));
235:            }
236:
237:            public void testClearPropertySingle() {
238:                Configuration config = setUpConfig();
239:                config.clearProperty("key");
240:
241:                assertFalse("property not cleared", config.containsKey("key"));
242:            }
243:
244:            public void testClearPropertyMultiple() {
245:                Configuration config = setUpMultiConfig();
246:                config.clearProperty("key");
247:
248:                assertFalse("property not cleared", config.containsKey("key"));
249:            }
250:
251:            public void testClearSingle() {
252:                Configuration config = setUpConfig();
253:                config.clear();
254:
255:                assertTrue("configuration is not cleared", config.isEmpty());
256:            }
257:
258:            public void testClearMultiple() {
259:                Configuration config = setUpMultiConfig();
260:                config.clear();
261:
262:                assertTrue("configuration is not cleared", config.isEmpty());
263:            }
264:
265:            public void testGetKeysSingle() {
266:                Configuration config = setUpConfig();
267:                Iterator it = config.getKeys();
268:
269:                assertEquals("1st key", "key1", it.next());
270:                assertEquals("2nd key", "key2", it.next());
271:            }
272:
273:            public void testGetKeysMultiple() {
274:                Configuration config = setUpMultiConfig();
275:                Iterator it = config.getKeys();
276:
277:                assertEquals("1st key", "key1", it.next());
278:                assertEquals("2nd key", "key2", it.next());
279:            }
280:
281:            public void testContainsKeySingle() {
282:                Configuration config = setUpConfig();
283:                assertTrue("missing key1", config.containsKey("key1"));
284:                assertTrue("missing key2", config.containsKey("key2"));
285:            }
286:
287:            public void testContainsKeyMultiple() {
288:                Configuration config = setUpMultiConfig();
289:                assertTrue("missing key1", config.containsKey("key1"));
290:                assertTrue("missing key2", config.containsKey("key2"));
291:            }
292:
293:            public void testIsEmptySingle() {
294:                Configuration config1 = setUpConfig();
295:                assertFalse("The configuration is empty", config1.isEmpty());
296:            }
297:
298:            public void testIsEmptyMultiple() {
299:                Configuration config1 = setUpMultiConfig();
300:                assertFalse("The configuration named 'test' is empty", config1
301:                        .isEmpty());
302:
303:                Configuration config2 = new DatabaseConfiguration(datasource,
304:                        TABLE_MULTI, COL_NAME, COL_KEY, COL_VALUE,
305:                        "testIsEmpty");
306:                assertTrue(
307:                        "The configuration named 'testIsEmpty' is not empty",
308:                        config2.isEmpty());
309:            }
310:
311:            public void testGetList() {
312:                Configuration config1 = new DatabaseConfiguration(datasource,
313:                        "configurationList", COL_KEY, COL_VALUE);
314:                List list = config1.getList("key3");
315:                assertEquals(3, list.size());
316:            }
317:
318:            public void testGetKeys() {
319:                Configuration config1 = new DatabaseConfiguration(datasource,
320:                        "configurationList", COL_KEY, COL_VALUE);
321:                Iterator i = config1.getKeys();
322:                assertTrue(i.hasNext());
323:                Object key = i.next();
324:                assertEquals("key3", key.toString());
325:                assertFalse(i.hasNext());
326:            }
327:
328:            public void testClearSubset() {
329:                Configuration config = setUpConfig();
330:
331:                Configuration subset = config.subset("key1");
332:                subset.clear();
333:
334:                assertTrue("the subset is not empty", subset.isEmpty());
335:                assertFalse("the parent configuration is empty", config
336:                        .isEmpty());
337:            }
338:
339:            /**
340:             * Tests whether the configuration has already an error listener registered
341:             * that is used for logging.
342:             */
343:            public void testLogErrorListener() {
344:                DatabaseConfiguration config = new DatabaseConfiguration(
345:                        datasource, TABLE, COL_KEY, COL_VALUE);
346:                assertEquals("No error listener registered", 1, config
347:                        .getErrorListeners().size());
348:            }
349:
350:            /**
351:             * Tests handling of errors in getProperty().
352:             */
353:            public void testGetPropertyError() {
354:                setUpErrorConfig().getProperty("key1");
355:                checkErrorListener(AbstractConfiguration.EVENT_READ_PROPERTY,
356:                        "key1", null);
357:            }
358:
359:            /**
360:             * Tests handling of errors in addPropertyDirect().
361:             */
362:            public void testAddPropertyError() {
363:                setUpErrorConfig().addProperty("key1", "value");
364:                checkErrorListener(AbstractConfiguration.EVENT_ADD_PROPERTY,
365:                        "key1", "value");
366:            }
367:
368:            /**
369:             * Tests handling of errors in isEmpty().
370:             */
371:            public void testIsEmptyError() {
372:                assertTrue("Wrong return value for failure", setUpErrorConfig()
373:                        .isEmpty());
374:                checkErrorListener(AbstractConfiguration.EVENT_READ_PROPERTY,
375:                        null, null);
376:            }
377:
378:            /**
379:             * Tests handling of errors in containsKey().
380:             */
381:            public void testContainsKeyError() {
382:                assertFalse("Wrong return value for failure",
383:                        setUpErrorConfig().containsKey("key1"));
384:                checkErrorListener(AbstractConfiguration.EVENT_READ_PROPERTY,
385:                        "key1", null);
386:            }
387:
388:            /**
389:             * Tests handling of errors in clearProperty().
390:             */
391:            public void testClearPropertyError() {
392:                setUpErrorConfig().clearProperty("key1");
393:                checkErrorListener(AbstractConfiguration.EVENT_CLEAR_PROPERTY,
394:                        "key1", null);
395:            }
396:
397:            /**
398:             * Tests handling of errors in clear().
399:             */
400:            public void testClearError() {
401:                setUpErrorConfig().clear();
402:                checkErrorListener(AbstractConfiguration.EVENT_CLEAR, null,
403:                        null);
404:            }
405:
406:            /**
407:             * Tests handling of errors in getKeys().
408:             */
409:            public void testGetKeysError() {
410:                Iterator it = setUpErrorConfig().getKeys();
411:                checkErrorListener(AbstractConfiguration.EVENT_READ_PROPERTY,
412:                        null, null);
413:                assertFalse("Iteration is not empty", it.hasNext());
414:            }
415:
416:            /**
417:             * Tests obtaining a property as list whose value contains the list
418:             * delimiter. Multiple values should be returned.
419:             */
420:            public void testGetListWithDelimiter() {
421:                DatabaseConfiguration config = setUpConfig();
422:                config.setListDelimiter(';');
423:                List values = config.getList("keyMulti");
424:                assertEquals("Wrong number of list elements", 3, values.size());
425:                assertEquals("Wrong list element 0", "a", values.get(0));
426:                assertEquals("Wrong list element 2", "c", values.get(2));
427:            }
428:
429:            /**
430:             * Tests obtaining a property whose value contains the list delimiter when
431:             * delimiter parsing is disabled.
432:             */
433:            public void testGetListWithDelimiterParsingDisabled() {
434:                DatabaseConfiguration config = setUpConfig();
435:                config.setListDelimiter(';');
436:                config.setDelimiterParsingDisabled(true);
437:                assertEquals("Wrong value of property", "a;b;c", config
438:                        .getString("keyMulti"));
439:            }
440:
441:            /**
442:             * Tests adding a property containing the list delimiter. When this property
443:             * is queried multiple values should be returned.
444:             */
445:            public void testAddWithDelimiter() {
446:                DatabaseConfiguration config = setUpConfig();
447:                config.setListDelimiter(';');
448:                config.addProperty("keyList", "1;2;3");
449:                String[] values = config.getStringArray("keyList");
450:                assertEquals("Wrong number of property values", 3,
451:                        values.length);
452:                assertEquals("Wrong value at index 1", "2", values[1]);
453:            }
454:
455:            /**
456:             * A specialized database configuration implementation that can be
457:             * configured to throw an exception when obtaining a connection. This way
458:             * database exceptions can be simulated.
459:             */
460:            static class PotentialErrorDatabaseConfiguration extends
461:                    DatabaseConfiguration {
462:                /** A flag whether a getConnection() call should fail. */
463:                boolean failOnConnect;
464:
465:                public PotentialErrorDatabaseConfiguration(
466:                        DataSource datasource, String table, String keyColumn,
467:                        String valueColumn) {
468:                    super (datasource, table, keyColumn, valueColumn);
469:                }
470:
471:                protected Connection getConnection() throws SQLException {
472:                    if (failOnConnect) {
473:                        throw new SQLException("Simulated DB error");
474:                    }
475:                    return super .getConnection();
476:                }
477:            }
478:
479:            /**
480:             * A test error listener implementation that is used for finding out whether
481:             * error events are correctly triggered.
482:             */
483:            static class TestErrorListener implements 
484:                    ConfigurationErrorListener {
485:                /** Stores the number of calls. */
486:                int errorCount;
487:
488:                /** Stores the last error event. */
489:                ConfigurationErrorEvent event;
490:
491:                public void configurationError(ConfigurationErrorEvent event) {
492:                    errorCount++;
493:                    this.event = event;
494:                }
495:            }
496:        }
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