org.spockframework.runtime.SpockEngine Unable to get public no-arg constructor encountered while upgrading Groovy and Spock - gradle

Question

Using Gradle 7.1.1, Java 16, Groovy 3.0.8 and Spock 2.0-groovy-3.0
I'm getting this error when running ./gradlew clean test
Caused by: java.util.ServiceConfigurationError: org.junit.platform.engine.TestEngine: org.spockframework.runtime.SpockEngine Unable to get public no-arg constructor
at java.base/java.util.ServiceLoader.fail(ServiceLoader.java:582)
at java.base/java.util.ServiceLoader.getConstructor(ServiceLoader.java:673)
at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1232)
at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1264)
at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1299)
at java.base/java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1383)
at java.base/java.lang.Iterable.forEach(Iterable.java:74)
at org.junit.platform.launcher.core.LauncherFactory.create(LauncherFactory.java:95)
at org.junit.platform.launcher.core.LauncherFactory.create(LauncherFactory.java:75)
at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:97)
at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79)
at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61)
... 25 more
Caused by: java.lang.NoClassDefFoundError: org/junit/platform/engine/support/discovery/SelectorResolver
at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3305)
at java.base/java.lang.Class.getConstructor0(Class.java:3510)
at java.base/java.lang.Class.getConstructor(Class.java:2238)
at java.base/java.util.ServiceLoader$1.run(ServiceLoader.java:660)
at java.base/java.util.ServiceLoader$1.run(ServiceLoader.java:657)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
at java.base/java.util.ServiceLoader.getConstructor(ServiceLoader.java:668)
... 36 more
Caused by: java.lang.ClassNotFoundException: org.junit.platform.engine.support.discovery.SelectorResolver
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:636)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
... 44 more
This is the build.gradle for the module where error is reported:
dependencies {
implementation 'io.rest-assured:rest-assured'
implementation 'org.yaml:snakeyaml'
implementation 'com.fasterxml.jackson.core:jackson-databind'
testImplementation 'org.junit.jupiter:junit-jupiter'
testImplementation('org.spockframework:spock-core') {
transitive = false
}
}
Parent module build.gradle file:
ext {
jupiterVersion = '5.7.2'
}
jar.enabled = false
subprojects {
apply plugin: 'java'
apply plugin: 'groovy'
apply plugin: 'codenarc'
jar.enabled = true
codenarc {
toolVersion = '1.4'
reportFormat = 'html'
configFile = new File('../../tool/codenarc/groovy-ruleset.groovy')
}
dependencyManagement {
imports {
mavenBom("org.springframework.boot:spring-boot-dependencies:2.5.1") {
bomProperties(['selenium.version' : '3.141.59',
'rest-assured.version': '4.1.1'])
}
}
dependencies {
dependency 'org.codehaus.groovy.modules.http-builder:http-builder:0.7.1'
dependency 'org.spockframework:spock-core:2.0-groovy-3.0'
dependency 'com.athaydes:spock-reports:2.0-groovy-3.0'
dependency 'com.codeborne:selenide:5.3.1'
dependency 'org.hamcrest:hamcrest:2.1'
dependencySet(group: 'org.junit.jupiter', version: jupiterVersion) {
entry 'junit-jupiter'
entry 'junit-jupiter-api'
}
dependencySet(group: 'org.slf4j', version: '1.7.28') {
entry 'jcl-over-slf4j'
entry 'jul-to-slf4j'
}
dependencySet(group: 'org.aspectj', version: '1.9.4') {
entry 'aspectjrt'
entry 'aspectjweaver'
}
dependency 'io.rest-assured:rest-assured:4.1.1'
dependency 'org.postgresql:postgresql:42.2.8'
dependency 'org.yaml:snakeyaml:1.25'
dependency 'org.apache.poi:poi-ooxml:4.1.1'
dependency 'com.opencsv:opencsv:4.0'
dependency 'org.junit.platform:junit-platform-launcher:1.4.0'
}
}
test {
useJUnitPlatform()
}
}
Any help would be appreciated.
PS. This was working with Java 11, Groovy 2.5 and Spock 1.3-groovy-2.5

Answer 1

Have you added useJUnitPlatform()?
https://github.com/spockframework/spock-example/blob/master/build.gradle#L34
test {
useJUnitPlatform()
}

Answer 2

It was a problem with the parent project's build.gradle file.
I recently upgraded the spring boot version to 2.5.1.
After updating this entry in the build.gradle file the error went away.
imports {
mavenBom("org.springframework.boot:spring-boot-dependencies:2.5.1") {
bomProperties(['selenium.version' : '3.141.59',
'rest-assured.version': '4.1.1'])
}
}