I am currently building automated tests which will be generated dynamically in their own class (e.g. TestClass1234567890.class). From those tests (which I will run with the JUnit Platform Launcher) I want to generate a JaCoCo rapport.
Whenever I look up examples for the JaCoCo API, they only show it with a class that implements Runnable, which does not make sense since you'd want to run it on a test class.
Can anyone point me in the correct direction on how to combine the JaCoCo API with the JUnit Platform Launcher? Any resource/example would be appreciated.
You use jacoco report maven plugin:
org.jacoco:jacoco-maven-plugin:0.8.7-SNAPSHOT:report
together with its optional parameters you could define how do you like it
check here
Related
I found that jacoco only supports two startup methods, offline and javaagent, but the project requires me to use jacoco to attach a running jvm. Is there any way to achieve it?
When looking at the jacoco source code, I saw that CoverageTransformer said that it does not support class retransformation, so I think it is not feasible to inject jacoco through agentmain?
For example if 10 specs are run. then code coverage report should be generated for the same. I have my classes in src/test/Java folder.
Is there any way to achieve this?
I have tried using antrun plugin. It's getting executed but code coverage for all the classes is displayed as zeros. however execution of specs are successful and it's pass
hi all i have build unit testing for controller, repository and Service but why in my sonarqube code coverage always give me code coverage only 0 percent. my question is how to make my percentage up ?
here what i was code in my testing
Sonarqube uses existing code coverage reports from JaCoCo (in the case of Java). Usually, you would set up the JaCoCo Maven plugin (or Gradle) to gather coverage info on test run and Sonarqube then loads this report.
See also the Sonarqube docs for info on setup. But if you are using Maven/Gradle, I believe Sonarqube is able to automatically pick up the correct file unless you have some special configuration.
i use jacoco plugin for gradle:
apply plugin: 'kotlin'
jacoco {
toolVersion = "0.7.9"
}
jacocoTestReport {
reports {
xml.enabled true
html.enabled false
csv.enabled false
}
}
and then i want to build a package for production
./gradlew build jacocoTestReport
the question is: will the generated package be instrumented by jacoco? if yes, how can build package NOT instrumented = ready for production? and having code coverage run? do i have to run build twice? is it impossible to build code once (sign it) and then test it, measure coverage etc and if all checks passes, deploy it?
JaCoCo provides two ways of performing instrumentation:
so-called "on-the-fly" using Java Agent - http://www.jacoco.org/jacoco/trunk/doc/agent.html
and so-called "offline" - http://www.jacoco.org/jacoco/trunk/doc/offline.html
The difference is that in first case instrumentation happens in memory during execution and so no class or jar files will be changed on disk - quoting the second link:
One of the main benefits of JaCoCo is the Java agent, which instruments classes on-the-fly. This simplifies code coverage analysis a lot as no pre-instrumentation and classpath tweaking is required.
So one of the simplifications that Java agent brings - is exactly that you don't need to worry about packaging or multiple builds. This is IMO one of the advantages of JaCoCo over other coverage tools for Java such as Cobertura and Clover.
And this is one of the reasons why it is highly recommended to use on-the-fly instrumentation - quoting http://www.jacoco.org/jacoco/trunk/doc/cli.html :
the preferred way for code coverage analysis with JaCoCo is on-the-fly instrumentation with the JaCoCo agent. Offline instrumentation has several drawbacks and should only be used if a specific scenario explicitly requires this mode.
One of such specific scenarios - is execution of tests on Android, because there is no way to use Java agent on it. So AFAIK Android Plugin for Gradle, when instructed to measure coverage using JaCoCo, uses offline instrumentation and therefore requires two types of build - with coverage and without for release.
On the other hand JaCoCo Gradle Plugin, which integrates JaCoCo into Gradle for Java projects, AFAIK as of today provides ability to perform only on-the-fly instrumentation and not offline.
We have a bunch junit tests in our current project. Essentially we are looking for a way to run all the test in a given package. Currently in Netbeans I see you can run all the tests or a single test, but no way to run a a sub-set of tests.
Is this built into Netbeans? Or is there another way we can do this?
In JUnit this is achieved through TestSuite. You can check for more information here (look at the code, not at the pictures).
At least in the Eclipse IDE there is a functionality that lets you add a new TestSuite, select which tests it is to include and then have the IDE generate it for you.
I haven't seen such thing in Netbeans, but you should check for any additional JUnit plugins.
Just set up junit test groups like documented e.g. on this question and then run the test group via your ant or maven build.