Using PowerMock with Spock

Question

I have a class with a few static methods.I need to Mock these static methods. I know PowerMock does this,but I was not able to find any tutorials/materials that shed some light

Answer 1

Since Powermock Version 1.6.0, powermock allows the delegation of the test runner.

This allows the wrapping of the Spock test runner (Sputnik) within the PowerMock test runner framework. Sputnik will then start the test case specifications, and still allow the use of the PowerMock framework.

With JUnit4 and Powermock, I use the following template for accessing static classes.

The test class:

package mypackage;

import org.junit.runner.RunWith
import org.powermock.api.mockito.PowerMockito
import org.powermock.core.classloader.annotations.PrepareForTest
import org.powermock.modules.junit4.PowerMockRunner
import org.powermock.modules.junit4.PowerMockRunnerDelegate
import org.spockframework.runtime.Sputnik
import spock.lang.Specification

@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(Sputnik.class)
@PrepareForTest([MyStaticMethodClass.class])
class MyTestForClassTest extends Specification {

    def myStaticMethodClass

    def setup() {
        PowerMockito.mockStatic(MyStaticMethodClass.class)
        myStaticMethodClass= Mock(MyStaticMethodClass)
        PowerMockito.when(MyStaticMethodClass.getInstance()).thenReturn(myStaticMethodClass)
    }

    @Unroll
    def "#TestCase policy RF210 triggered"() {
    given: "a product list for the policy"
    myStaticMethodClass.someInstanceMethod() >> "my return value"
    classUnderTest = new ClassUnderTest()
    ...

The dependencies

  
    org.mockito
    mockito-all
    1.10.19
    test
  

  
    org.powermock
    powermock-module-junit4
    1.7.4
    test
  

  
    org.powermock
    powermock-api-mockito
    1.7.4
    test
  

    
        org.spockframework
        spock-core
        1.3-groovy-2.5
        test
    

    
        cglib
        cglib-nodep
        3.3.0
        test