我正在使用MongoDB,Java,JDO和Maven。如何編寫數據庫單元測試?
我跑了存儲一些垃圾數據,並從MongoDB中取出它,它看起來確定一個簡單的主應用程序,但我要開始寫適當的單元測試。嘲笑實際的數據庫交互對我來說似乎沒有什麼幫助,所以在技術上我想編寫功能測試來檢查與數據庫的完整交互。
我的單元測試的設置是這樣的:
static final Logger LOG = LoggerFactory.getLogger(DaoTest.class);
static final int PORT = 100001;
static Process mongod;
static PersistenceManagerFactory pmf;
// Class under test.
Dao dao;
@BeforeClass
public static void beforeAll() throws Exception {
File mongoDir = new File(
System.getProperty("java.io.tmpdir"),
"mongodb-" + System.currentTimeMillis());
mongoDir.deleteOnExit();
mongod = Runtime.getRuntime().exec(String.format(
"/bin/sh -c mongod --dbpath=%s --port=%d",
mongoDir.getAbsolutePath(),
PORT));
LOG.info("Mongodb using {} on port {}.", mongoDir.getAbsolutePath(), PORT);
Thread.sleep(1000);
pmf = JDOHelper.getPersistenceManagerFactory("mongodbtest");
LOG.info("DB connection URL: {}.", pmf.getConnectionURL());
}
@AfterClass
public static void afterAll() throws Exception {
mongod.destroy();
}
@Before
public void setUp() throws Exception {
dao = new Dao(pmf);
}
的src /測試/資源/ META-INF/persistence.xml中是這樣的:
<?xml version="1.0" encoding="UTF-8" ?>
<persistence ...>
<persistence-unit name="mongodbtest">
<properties>
<property name="javax.jdo.PersistenceManagerFactoryClass"
value="org.datanucleus.api.jdo.JDOPersistenceManagerFactory" />
<property name="javax.jdo.option.ConnectionURL" value="mongodb://localhost:100001/contacts"/>
<property name="javax.jdo.option.RetainValues" value="true"/>
<property name="datanucleus.autoCreateSchema" value="true" />
<property name="datanucleus.validateTables" value="false" />
<property name="datanucleus.validateConstraints" value="false" />
<property name="datanucleus.storeManagerType" value="mongodb" />
</properties>
</persistence-unit>
</persistence>
最後,我執行我的單位使用mvn clean test進行測試,並且只有在添加嘗試保存數據的實際測試時才能運行。我收到以下錯誤:
Mongodb using /var/folders/00/0l550000h01000cxqpysvccm002cmm/T/mongodb-1373820849219 on port 100001.
DB connection URL: mongodb://localhost:100001/contacts.
Jul 14, 2013 12:54:10 PM com.mongodb.DBTCPConnector initDirectConnection
WARNING: Exception executing isMaster command on localhost/127.0.0.1:27017
java.io.IOException: couldn't connect to [localhost/127.0.0.1:27017] bc:java.net.ConnectException: Connection refused
at com.mongodb.DBPort._open(DBPort.java:214)
at com.mongodb.DBPort.go(DBPort.java:107)
...
Jul 14, 2013 12:54:10 PM com.mongodb.DBTCPConnector initDirectConnection
WARNING: Exception executing isMaster command on localhost/127.0.0.1:27017
java.io.IOException: couldn't connect to [localhost/127.0.0.1:27017] bc:java.net.ConnectException: Connection refused
at com.mongodb.DBPort._open(DBPort.java:214)
at com.mongodb.DBPort.go(DBPort.java:107)
...
ul 14, 2013 12:54:10 PM com.mongodb.DBPortPool gotError
WARNING: emptying DBPortPool to localhost/127.0.0.1:27017 b/c of error
java.io.IOException: couldn't connect to [localhost/127.0.0.1:27017] bc:java.net.ConnectException: Connection refused
at com.mongodb.DBPort._open(DBPort.java:214)
at com.mongodb.DBPort.go(DBPort.java:107)
...
Jul 14, 2013 12:54:10 PM org.datanucleus.store.valuegenerator.AbstractGenerator obtainGenerationBlock
INFO: Error encountered allocating block of IDs : can't call something : localhost/127.0.0.1:27017//localhost:100001/contacts
127.0.0.1:27017是mongodb的默認設置,但我不知道它爲什麼使用它。我可以看到它從我的persistence.xml文件中獲取配置,所以我很困惑。蒙戈docs說連接字符串URL格式爲:
mongodb://[username:[email protected]]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database][?options]]
到目前爲止,我只基於Maven運行這個,因爲這是唯一的,只要我有這麼遠,但另外一個問題我必須最終是如何在Eclipse中運行這些單元測試。我假設這些測試需要在Eclipse中運行,並且我不知道如何設置。
我猜我並不想這樣做,雖然第一人。在Java中編寫功能數據庫測試是否有任何標準做法?我是否全都錯了?
你看看nosql-unit/jongo了嗎?我認爲是一個更好的解決方案,然後從Java代碼運行mongod。 –