[GROOVY-6687] Traits aren't detected as implementing abstract methods

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0-beta-1
• Fix Version/s: 2.3.0-beta-2
• Component/s: Compiler
• Assignee: Cédric Champeau
• Reporter: Tim Yates
• Created: 09/Apr/14 07:52
• Updated: 10/Apr/14 17:16
• Resolved: 09/Apr/14 08:00

Description

If you have an abstract class, and then implement the abstract methods via a trait, eg:

abstract class AbstractSomething {
    abstract void something()
}

trait SomethingDoing {
    void something() {
       println "Doing something"
    }
}

class Something extends AbstractSomething implements SomethingDoing {
    void foo() {
        something()
    }
}

new Something().foo()

Rather than the expected output Doing something we get:

Can't have an abstract method in a non-abstract class. The class 'Something' must be declared abstract or the method 'void something()' must be implemented.