DbUnit使用入门

技术2022-05-11 132

DbUnit 是在JUnit的基础上扩展而成的Java单元测试框架。

如果你的业务逻辑涉及到了对数据库中记录的增、删、改、查操作，而你又不想每次都手动到数据库里查询，来验证你的业务逻辑，那么DbUnit可以帮助你。实际上，如果你的单元测试中只有少量业务逻辑对数据库进行了操作，那么，DbUnit在单元测试中的优势还体现不出来，但是，如果你的单元测试用例中有大量的DAO操作，那么全凭手动执行数据库查询，讲造成工作效率降低，而且可能会遗漏功能点。而且，在回归测试中，验证DAO操作的工作不能重用。

现在就让我们开始认识DbUnit吧！首先介绍org.dbunit.DatabaseTestCase.java类，源码如下：

package org.dbunit; import junit.framework.TestCase; import org.dbunit.database.IDatabaseConnection; import org.dbunit.dataset.IDataSet; import org.dbunit.operation.DatabaseOperation; /** */ public abstract class DatabaseTestCase extends TestCase { public DatabaseTestCase() { } public DatabaseTestCase(String name) { super(name); } /** * Returns the test database connection. */ protected abstract IDatabaseConnection getConnection() throws Exception; /** * Returns the test dataset. */ protected abstract IDataSet getDataSet() throws Exception; /** * Close the specified connection. Ovverride this method of you want to * keep your connection alive between tests. */ protected void closeConnection(IDatabaseConnection connection) throws Exception { connection.close(); } /** * Returns the database operation executed in test setup. */ protected DatabaseOperation getSetUpOperation() throws Exception { return DatabaseOperation.CLEAN_INSERT; } /** * Returns the database operation executed in test cleanup. */ protected DatabaseOperation getTearDownOperation() throws Exception { return DatabaseOperation.NONE; } private void executeOperation(DatabaseOperation operation) throws Exception { if (operation != DatabaseOperation.NONE) { IDatabaseConnection connection = getConnection(); try { operation.execute(connection, getDataSet()); } finally { closeConnection(connection); } } } // TestCase class protected void setUp() throws Exception { super.setUp(); executeOperation(getSetUpOperation()); } protected void tearDown() throws Exception { super.tearDown(); executeOperation(getTearDownOperation()); }}

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