[GROOVY-7214] Problem With Private Methods In A Trait

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3.9, 2.4.0-rc-1
• Assignee: Cédric Champeau
• Reporter: Jeff Brown
• Created: 18/Dec/14 11:49
• Updated: 23/Dec/14 19:45
• Resolved: 18/Dec/14 14:35

Description

The attached traitissue.zip contains the following code:

src/main/groovy/demo/SomeTrait.groovy

package demo

trait SomeTrait {

    static getSomeValue() {
        someHelperMethod()
    }

    private static someHelperMethod() {
        42
    }
}

src/test/groovy/demo/SomeTraitSpec.groovy

package demo

import spock.lang.Specification

class SomeTraitSpec extends Specification {

    void 'test static method'() {
        expect:
        SomeClass.getSomeValue() == 42

    }
}

class SomeClass implements SomeTrait {}

Using the current 2.4.0-SNAPSHOT that test fails with the following:

groovy.lang.MissingMethodException: No signature of method: static demo.SomeClass.someHelperMethod() is applicable for argument types: () values: []
    at demo.SomeTrait$Trait$Helper.getSomeValue(SomeTrait.groovy:6)
    at demo.SomeTraitSpec.test static method(SomeTraitSpec.groovy:9)

If the private method in SomeTrait is promoted to public, the test passes. If build.gradle is edited to use either Groovy 2.3.7 or 2.3.8 or 2.4.0-beta-4 the test passes.

Issue Links

• is related to: GROOVY-7191 CompileStatic Will Not Allow Instance Method In Trait To Call Static Method