JUnit + Maven. How to do something before and after all tests?

[Raziyah00]

It seems to me that I have learned JUnit completely. But I got such a problem when the connection needs to be received for a long time, not more than one, and in the end needs to be closed, and in the middle there are tests.
In this case, the interface is serial. I decided to do this by synchronizing read / write operations, now all threads are waiting for their turn to communicate with the device.

On the one hand, you can register opening and closing in blocks @ BeforeClass / AfterClass + add to the opening operation waiting for the port to be released, but this is crooked and the tests will be long, opening is an expensive operation.

How can I do this?
If I create your own TestRunner or Suite, then idea and maven will launch both, which will break everything.

[baileigh]

In general, this solution will be useful to anyone who wants to test consistently and in a given order.

It creates a suite, where in the annotation we list the classes in the order of execution:

@RunWith (Suite.class)
@ Suite.SuiteClasses ({OpenConnection.class,
                 GetServerIdTest.class,
                 ModbusStatusCodesTest.class,
                 ModbusSerialTransactionTest.class,
                 CloseConnection.class})
public class OrderedTestSuite {}

Add the plugin to pom.xml:

<plugin>
         <groupId> org.apache.maven.plugins </groupId>
         <artifactId> maven-surefire-plugin </artifactId>
         <configuration>
             <includes>
                 <include> ** / OrderedTestSuite.class </include>
             </includes>
         </configuration>
</plugin>

[Raziyah00]

@baileigh Thanks. This is an interesting option.