Failed to instantiate spec 'KernelTest' - testing

Question

I only try spock test, and get "Failed to instantiate spec 'KernelTest'", here is my full code
following is my code:
// build.gradle
apply plugin: 'groovy'
repositories {
mavenCentral()
}
dependencies {
compile 'org.codehaus.groovy:groovy-all:2.3.9'
compile gradleApi()
testCompile 'junit:junit:+'
testCompile project(":ro")
testCompile 'org.spockframework:spock-core:1.0-groovy-2.3'
}
my test is:
// KernelTest.groovy
package ro.gd
class KernelTest extends spock.lang.Specification {
def 'test smth'() {
expect: 1 == 1
}
}
it raise:
ro.gd.KernelTest > initializationError FAILED
org.spockframework.util.InternalSpockError
Caused by: java.lang.ExceptionInInitializerError at KernelTest.groovy:-1
Caused by: groovy.lang.GroovyRuntimeException at KernelTest.groovy:-1

Answer 1

I can get it to work with the latest gradle if I change ro/build.gradle to use a specific version of groovy:
compile 'org.codehaus.groovy:groovy-all:2.3.9'
And then change the dependencies of ro-gd/build.gradle to:
dependencies {
compile gradleApi()
testCompile project(":ro")
testCompile 'org.spockframework:spock-core:1.0-groovy-2.3', {
exclude module: 'groovy-all'
}
}