如何使用Groovy生成Java方法引用以进行测试

Question

I'm using Groovy with JUnit to test my Java code.

I need to test a method foo() which takes in a java.util.function.Function

public void foo(Function<Foo,Bar> func){
    return null; 
}

In my normal code I call foo by passing in a method reference of a method bar ie.

foo(mybar::bar)

How can I test this function in Groovy elegantly?

Using:

mybar.&bar

yields a groovy.lang.Closure<...> which is not compatible with java.util.function.Function .

How else can I achieve this?

Answer 1

强制执行Function的最终尝试，如下所示：

foo(mybar.&bar as Function)