HSQLDB内存和目标单元测试

Question

我定义了一个包含内存中的HSQLDB的Ant目标:

<target name="create.tables" depends="-prepare.test">
  <property name="db.connection.url" value="jdbc:hsqldb:mem:adb"/>
  <property name="db.driver" value="org.hsqldb.jdbcDriver"/>
  <property name="db.username" value="a"/>
  <property name="db.password" value="a"/>
  <echo>Creating tables using: ${db.driver} ${db.connection.url} ${product.mysql-connector.jar}</echo>
  <sql driver="${db.driver}"
      url="${db.connection.url}"
      userid="${db.username}"
      password="${db.password}"
      onerror="stop"
      src="/create-schema.sql">
      <classpath refid="test.classpath" />
  </sql>
</target>

准备。测试只包含基本的东西，如文件集等。当我打印SQL插入时，一切正常。但是如何从JUnit测试用例访问内存中的HSQLDB呢?

我试着:

Class.forName("org.hsqldb.jdbcDriver");
connection = DriverManager.getConnection("jdbc:hsqldb:mem:adb",
           "a", "a");

但是只有一个空的数据库。是否有可能在JUnit测试用例中使用HSQLDB和来自Ant目标的插入语句?

junit测试中的异常如下所示。表的存在是因为它是在ant任务中创建的:

 [junit] java.lang.Exception: user lacks privilege or object not found: MYTABLE
[junit]     at com.inmemorytests.InMemoryTest.testSomething(InMemoryTest.java:116)
[junit]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit]     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[junit]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[junit]     at java.lang.reflect.Method.invoke(Method.java:601)
[junit]     at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
[junit]     at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
[junit]     at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
[junit]     at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
[junit]     at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
[junit]     at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
[junit]     at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
[junit]     at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
[junit]     at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
[junit]     at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
[junit]     at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
[junit]     at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
[junit]     at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
[junit]     at junit.framework.JUnit4TestAdapter.run(JUnit4TestAdapter.java:39)
[junit]     at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:518)
[junit]     at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1052)
[junit]     at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:906)

Answer 1

这是您在Ant中的连接URL:

 <property name="db.connection.url" value="jdbc:hsqldb:mem:adb"/>

您必须使用相同的URL和相同的用户名和密码进行连接:

 connection = DriverManager.getConnection("jdbc:hsqldb:mem:adb", "a", "a");

Update:当使用内存数据库时，Ant目标和JUnit测试必须在同一个JVM中运行。如果在单独的JVM中运行这两个服务器，请在测试之前启动一个HSQLDB服务器，并从每个测试连接到该服务器。服务器连接URL是不同的，在HSQLDB指南中有描述。