Hello!
 
 
On the last Spring 5 /JPA Enterprise (Topjava) internship our training project migrated from JUnit 4 to JUnit 5.2. The basic process of migration is straightforward enough, but there are some nuances that require manual intervention. I want to briefly talk about them and create JUnit 5 Extensions for measuring the time of tests in a 10 minute video.
 
 

 
 
Extension code for measuring test time [/b]
import org.junit.jupiter.api.extension. *;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StopWatch;
public class TimingExtension implements BeforeTestExecutionCallback, AfterTestExecutionCallback, BeforeAllCallback, AfterAllCallback {
private static final Logger log = LoggerFactory.getLogger ("result");
private StopWatch stopWatch;
@Override
public void beforeAll (ExtensionContext ctx) {
stopWatch = new StopWatch ("Execution time of" + ctx.getRequiredTestClass (). getSimpleName ());
}
@Override
public void beforeTestExecution (ExtensionContext ctx) {
log.info ("Start stopWatch");
stopWatch.start (ctx.getDisplayName ());
}
@Override
public void afterTestExecution (ExtensionContext ctx) {
stopWatch.stop ();
log.info ("stop stopWatch");
}
@Override
public void afterAll (ExtensionContext ctx) {
log.info ('n' + stopWatch.prettyPrint () + 'n');
}
}

 
 
JUnit 5 homepage
 
Overview
 
10 interesting innovations
 
Extension Model
 
A Guide to JUnit 5
 
Migrating from JUnit 4
 
Before and After Test Execution Callbacks
 
Conditional Test Execution
 
Third party Extensions
 
Implementation of assertThat
 
 
 
Thank you for attention!
 
I hope that if your project uses JUnit 4 and you have not yet migrated to JUnit ? this little video will inspire you. And also on the use of JUnit 5 in your new projects.