Junit 5 Test Suites

Question

I'm trying to migrate a Project from JUnit 4 to JUnit 5.8.2 with junit-platform-suite-api 1.8.2. We used to organize our test classes in test suites. But if I use the @Suite annotation with @SelectClasses the test runner finds no test methods at all. When running a specific test class directly everything is fine. This happens in eclipse and gradle builds.

import org.junit.platform.suite.api.SelectClasses;
import org.junit.platform.suite.api.Suite;

@Suite
@SelectClasses({
    TestA.class
})
public class ImportantTestSuite {
}

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.Assertions;

public class TestA {

    @Test
    public void reallyImportantTest() {
        assertEquals(2, 1 + 1)
    }

}

build.gradle looks like this

plugins {
  id 'application'
}

dependencies {
  testImplementation "org.junit.jupiter:junit-jupiter-api:${junitVersion}"
  testImplementation 'org.junit.platform:junit-platform-suite-api:1.8.2'
  testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${junitVersion}"
}

test {
    useJUnitPlatform()
    minHeapSize = '1024m'
    maxHeapSize = '1024m'
    include '**/*ImportantTestSuite*'
    ignoreFailures = true
    testLogging {
      exceptionFormat 'full'
      events 'passed', 'skipped', 'failed'
    }
  }

Any idea how to organize the suites on class basis?

Edit:

Are test suites considered deprecated in JUnit5?

I already read this answers. As far as I see I'm using that apporach with @Suite and @SelectClasses and not the runner.

Answer 1

The junit-platform-suite-engine was missing...

See: https://junit.org/junit5/docs/current/user-guide/index.html#junit-platform-suite-engine

dependencies {
  testImplementation "org.junit.jupiter:junit-jupiter-api:${junitVersion}"
  testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${junitVersion}"
  testImplementation 'org.junit.platform:junit-platform-suite-api:1.8.2'
  **testRuntimeOnly 'org.junit.platform:junit-platform-suite-engine:1.8.2'**
  
}