[GROOVY-5136] Method selection misbehavior with category

• Type: Sub-task
• Status: Closed
• Priority: Minor
• Resolution: Information Provided
• Affects Version/s: 1.8.4
• Component/s: groovy-runtime
• Environment: Windows 7
• Assignee: Unassigned
• Reporter: Frank Hardy
• Created: 22/Nov/11 03:09
• Updated: 04/Jan/22 16:55
• Resolved: 04/Jan/22 16:55

Description

While using a category I stumbled upon the following misbehaviour:

class SomeCategory {
    static def method(String self, def val) {
        self + val
    }
}

use(SomeCategory) {
    // should throw a MissingMethodException but calls method() with null as param
    assert "foo".method() == "foonull"
}

I expected a MissingMethodException because a parameterless method doesn't exist.

Am I wrong?