I have a Spring Boot 2.5.4 project with some #SpringBootTest tests and some #Cucumber tests. I am using gradle to build.
I have noticed that my build is failing depending on where it's executed, and I found that it actually depended on the order the tests get executed, so I have a problem in my tests : if #SpringBootTest runs first then it's passing. if #Cucumber tests run first then it fails - probably because the H2 DB doesn't get fully reset in between.
Now, I would like to temporarily control the execution order, so that I can reproduce the issue consistently to fix the data dependency between my tests.
I am trying to use junit.jupiter.testclass.order.default property with value org.junit.jupiter.api.ClassOrderer$ClassName but it's not working.
I've put my 2 tests in a Juint5 #Suite mentioning the 2 tests in the #SelectClasses and changing their order, but even like that, it's not working - my feeling is that it's because there are actually 2 test runners, Junit Jupiter and Cucumber. Sometimes when I change something that doesn't seem related, the execution order changes :
I'm overriding Junit version to latest, hoping that it helps (and Junit5 Suite is available), but it doesn't help :
ext['junit-jupiter.version']='5.9.2'
I am using Cucumber 6.11.0.
My gradle test task is simply
test {
useJUnitPlatform()
finalizedBy(project.tasks.jacocoTestReport)
}
Is there a way to configure in my build the order in which the test runners get executed, in a consistent and reproduceable manner ?
Thanks
Gradle uses the JUnit Platform Launcher API to run the tests. You can do the same thing. And to ensure the order remains the same, you would invoke the platform twice within the same JVM.
This should allow you to reproduce your problem as Spring keeps the application running until the JVM exits.
import static org.junit.platform.engine.discovery.DiscoverySelectors.selectClass;
import my.project.spring.MySpringBootTest;
import my.project.cucumber.MyCucumberTest;
import org.junit.platform.launcher.Launcher;
import org.junit.platform.launcher.LauncherDiscoveryRequest;
import org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder;
import org.junit.platform.launcher.core.LauncherFactory;
import org.junit.platform.launcher.listeners.SummaryGeneratingListener;
import org.junit.platform.launcher.listeners.TestExecutionSummary;
public class ManualLaunch {
public static void main(String[] args) {
var cucumberSummary= runCucumberTest();
var jupiterSummary= runJupiterTest();
System.out.println("Jupiter failures : "+jupiterSummary.getTestsFailedCount());
System.out.println("Cucumber failures : "+cucumberSummary.getTestsFailedCount());
}
private static TestExecutionSummary runCucumberTest() {
LauncherDiscoveryRequest request = LauncherDiscoveryRequestBuilder.request()
// Configure the request for Cucumber here
.selectors(
selectClass(MyCucumberTest.class)
)
.build();
return launchAndGetSummary(request);
}
private static TestExecutionSummary runJupiterTest() {
LauncherDiscoveryRequest request = LauncherDiscoveryRequestBuilder.request()
.selectors(
selectClass(MySpringBootTest.class)
)
.build();
return launchAndGetSummary(request);
}
private static TestExecutionSummary launchAndGetSummary(LauncherDiscoveryRequest request){
Launcher launcher = LauncherFactory.create();
SummaryGeneratingListener listener = new SummaryGeneratingListener();
launcher.registerTestExecutionListeners(listener);
launcher.execute(request);
return listener.getSummary();
}
}
If you don't know how to run a main method from Gradle, you could also use JUnit to run JUnit. But then you do have to make sure the tests don't target themselves.
Hi I am trying to implement integration test using JUNIT 5 as a framework and we just want to start all the process once before all the test are executed and stop all when all tests are executed.
I found there is no easy way to do this as we have many test class and the BeforeAll and AfterAll method works per test class
What i found , i might be able to do that if i can register my own custom listeners but somehow it didnt work
import com.google.auto.service.AutoService;
import org.junit.platform.launcher.TestExecutionListener;
import org.junit.platform.launcher.TestPlan;
#AutoService(TestExecutionListener.class)
public class StateExecutionListener implements TestExecutionListener {
public void testPlanExecutionStarted(TestPlan testPlan) {
System.out.println("##########testPlanExecutionStarted "+testPlan.getRoots());
}
public void testPlanExecutionFinished(TestPlan testPlan) {
System.out.println("##########testPlanExecutionStarted "+testPlan.getRoots());
}
}
Any idea how can we register our own listeners / any other way to detect if all test cases are executed?
I use gradle JunitPlatform to run my tests
To add on to Sam's answer:
Assuming you have a class MyExecutionListener which implements TestExecutionListener, create a file src/main/resources/META-INF/services/org.junit.platform.launcher.TestExecutionListener
Inside the file put the reference of MyExecutionListener (i.e, com.blah.x.y.z.MyExecutionListener)
An example of this can be found on the official JUnit 5 repository: https://github.com/junit-team/junit5/blob/bd339a570a04d86b92a89e31bbecc59475692e2c/platform-tests/src/test/resources/testservices/META-INF/services/org.junit.platform.launcher.TestExecutionListener
To have your TestExecutionListener automatically registered, you have to do that via Java's ServiceLoader mechanism as described in the JUnit 5 User Guide:
https://junit.org/junit5/docs/current/user-guide/#launcher-api-listeners-custom
This is a static analysis question. It might be possible to write an AST parser with the ANTLR plugin in Checkstyle - or the backend to Findbugs. I'm looking for a pre-existing solution.
We have a weekly meeting of our developers in which we talk about issues of the day. Part of this is looking at the code quality reports in Sonar.
We have a number of ignored JUnit tests we're working through - and I'd like to rank them by size (lines of code in the JUnit test method).
My question is: Is there a way to find the ignored JUnit Test with the most lines of code in a large codebase?
Here is an example of an ignored method in a JUnit test:
import org.junit.Test;
import org.junit.Ignore;
import static org.junit.Assert.assertEquals;
public class TestJunit {
String message = "Robert";
MessageUtil messageUtil = new MessageUtil(message);
#Ignore
#Test
public void testPrintMessage() {
System.out.println("Inside testPrintMessage()");
message = "Robert";
assertEquals(message,messageUtil.printMessage());
}
#Test
public void testSalutationMessage() {
System.out.println("Inside testSalutationMessage()");
message = "Hi!" + "Robert";
assertEquals(message,messageUtil.salutationMessage());
}
}
Here is the documentation for the #Ignored annotation.
https://www.tutorialspoint.com/junit/junit_ignore_test.htm
Assumptions:
Simple line-count - counting whitespace is fine. (If a more sophisticated line-count is available that's great - but all I want is a consistent baseline for comparison).
#Ignored can apply to classes and methods - ideally I want both, but this question was originally about ignored methods - so I'll stick with that.
If you use the maven surefire reports plugin to collect all the test reports, actually the ignored tested are collected by default, just like the below screenshots show, and you can go through all the ignored tests details.
This is a very basic question for JUnit testing. I wrote a program which calculate the new position of a dot by given instructions for moving. The program is working properly but I have to write a JUnit test for check the result and I don't know how.
Write a test method for every dot movement that you want to check. In each test method you call your method and then compare the actual result with the expected result.
Try something like this, using JUnit 4.x :
package org.dotmover;
import org.junit.Assert;
import org.junit.Test;
public class DotMoverTest {
#Test
public void testDotMoverForward() {
final DotMover dotMover = new DotMover(...);
final int newPos = dotMover.move(...);
final int expectedNewPos = ...;
Assert.assertEquals(expectedNewPos, newPos);
}
}
Add JUnit to classpath of you project. The create JUnit testcase. It is just a class that extends TestCase.
If you are using JUnit prior to v 4.0 each test method must start from word test, e.g.
testPosition(), testMoviing() etc.
If you are using version 4 and higher the test methods must be targeted with annotation #Test.
Now write your testing scenario. User static assertXXX() methods of class Assert to verify that your program is working.
Good luck and happy TDD!
When running all my tests in Eclipse (Eclipse 3.4 'Ganymede'), one test is listed under "Unrooted Tests". I'm using Junit 3.8 and this particular test extends TestCase. I do not see any difference between this test and the other tests. I don't remember seeing this occur in Eclipse 3.3 (Europa).
Clarification:
We haven't moved to JUnit 4.0 yet, so we are not using annotations. I also googled and it seemed like most people were having issues with JUnit 4, but I did not see any solutions. At this point the test passes both locally and in CruiseControl so I'm not overly concerned, but curious.
When I first saw this, though, it was on a failing test that only failed when run with other tests. This led me down the rabbit hole looking for a solution to the "Unrooted" issue that I never found. Eventually I found the culprit in another test that was not properly tearing down.
I agree, it does seem like an Eclipse issue.
Finally I found the solution. The problem is that you are not defining your test cases using annotations but are still doing it the "old way". As soon as you convert over to using annotations you will be able to run one test at a time again.
Here is an example of what a basic test should now look like using annotations:
import static org.junit.Assert.*; // Notice the use of "static" here
import org.junit.Before;
import org.junit.Test;
public class MyTests { // Notice we don't extent TestCases anymore
#Before
public void setUp() { // Note: It is not required to call this setUp()
// ...
}
#Test
public void doSomeTest() { // Note: method need not be called "testXXX"
// ...
assertTrue(1 == 1);
}
}
I was getting the "unrooted tests" error message as well and it went away magically. I believe it was due to the fact that I was using Eclipse with a Maven project. When I added a new method to my Test class and gave it the #Test annotation, it began getting the error message when I tried to run that one method using the "Run as Junit test" menu option; however, once I ran a maven build the unrooted tests message disappeared and I believe that is the solution to the problem in the future.
Run a maven build because it will refresh the class that JUnit is using.
If your class extends TestCase somewhere in its hierarchy, you have to use the JUnit 3 test runner listed in the drop down under run configurations. Using the JUnit 4 runner (the default I believe) causes that unrooted test phenomenon to occur.
I got this error because I renamed my test method and then tried to run the test in Eclipse by clicking on the same run configuration - referring to the old method which now didn't exist.
We solved the problem by making sure our test project was built. We had an issue in the build path which would not allow our test class to be compiled. Once we resolved the build path issue, the test compiled and the "new" method was able to be run. So we can assume that "Unrooted" tests also mean that they don't exist in the compiled binary.
I've never seen this -- but as far as I can tell from skimming Google for a few minutes, this appears as though it could be a bug in Eclipse rather than a problem with your test. You don't have the #Test annotation on the test, I assume? Can you blow the test away and recreate it, and if so do you get the same error?
Another scenario that causes this problem was me blindly copy/pasting a method that requires a parameter. i.e.
import org.junit.Test;
public class MyTest {
#Test
public void someMethod(String param) {
// stuff
}
}
You have a few simple solutions:
define the variable in the specific test method
add it as an instance variable to the test class
create a setup method and annotate it with #Before
For me, it was due to the project got build path issues. My maven dependencies configuration needs to be updated.
I had that problem and putting one "#Test" before the test method solved it!
like this:
#Test
public void testOne() { // ...
assertTrue(1 == 1);
}
These are the two scenarios that the Unrooted errors show up.
If you have missed the annotation #Test before the test.
#Test
public void foo(){
}
If it is a Gwt project and when two mock of the same object are defined. Lets say there is one class Class A and
#GwtMock
private A atest;
#GwtMock
private A a;
Then this will also show a Unrooted test error.
One other thing you can try is to upgrade your version of JUnit to at least 4.12.
I was experiencing this problem for a while with a class that extended one that used #RunWith(Parameterized.class).
After a while, and I'm sorry that I don't know precisely what I did to cause this, the 'Unrooted Tests' message went away, but the test still didn't run correctly. The constructor that should have accepted arguments from the #Parameters method was never getting called; execution jumped straight from #BeforeClass to #AfterClass.
The fix for that problem was to upgrade JUnit from the 4.8.1 it was using, to the latest (4.12). So maybe that could help someone else in the future.
I had the same problem with
java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
you need the jar hamcrest.
same question 14539072: java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
I could the fix the issue by shifting from TestRunner ver 4.0 to 3 in run configurations for the individual test method.
Do not extend junit.framework.TestCase in your test class with junit1.4 and this should solve the problem
You are using Hamcrest? or another library to help in your test?. You are not using
import static org.junit.Assert.*;
Check if in your test you use:
import static org.hamcrest.MatcherAssert.assertThat;
or other assert isn´t JUnit assert.
It turned out to be that my build path had some error...some jars were missing.
I reconfigured build path and it worked!
For me the problem was, that an exception was thrown in the #BeforeClass or #AfterClass methods. This will also cause tests to be categorized as unrooted.
I got this error with the test method name as "test"
#Test
public void test() {
// ... assertTrue(1 == 1);
}
I renamed the method and it worked
I ran into this problem by not also declaring the test to be static.
Maybe it's just a logical confusion about the goal of the method. Let's remember:
E.g. correct tagged test method:
#Test
#Transactional
#Rollback(true)
public void testInsertCustomer() {
(...)
}
-With Eclipse Junit plugin, You can run that test method using context menu over the method (E.g. at package explorer expanding the class and methods and selecting "testInsertCustomer()" method and from that item selecting "Run as >> JUnit test").
If you forgot "#Test" tag, or simply the method is not a test, but a (private or not) common method for using as utility for the other tests (e.g. "private fillCustomerObject()"), then the method does not require "#Test" tag, and simply you can not run it as a JUnit test!
It's easy that you could create a utility method and later you forgot the real goal of that method, so if you try to run it as a test, JUnit will shout "Unrooted Tests".
For me this problem was created by a real-time exception thrown in the #AfterClass method (take a look here for documentation):
Basically all the test methods succeeded but at the end of the class this method was failing. Therefore all the tests seems fine but there was on my Eclipse an additional "unrooted test" failed.
I got these errors for a maven project. I rebuild the project with mvn clean install.And the issue was solved
It actually told me there is a test with annotation: #RunWith(MockitoJUnitRunner.class)