使用Spock在Java中截断或模拟静态方法

import static org.mockito.Mockito.*

def "test static method with Mockito"() {
    given:
    def expected = 10
    def input = 5
    def mockStaticClass = mock(StaticClass)
    when(mockStaticClass.staticMethod(input)).thenReturn(expected)

    expect:
    StaticClass.staticMethod(input) == expected
}

class StaticClass {
    static int staticMethod(int input) {
        return input * 2
    }
}

import groovy.mock.interceptor.StaticMethodMockInterceptor

def "test static method with Groovy meta-programming"() {
    given:
    def expected = 10
    def input = 5
    def interceptor = new StaticMethodMockInterceptor()
    interceptor.use {
        StaticClass.staticMethod = { int i -> expected }
        expect:
        StaticClass.staticMethod(input) == expected
    }
}

class StaticClass {
    static int staticMethod(int input) {
        return input * 2
    }
}