PowerMockito usage preparation

Powermockito is required when:
----------------------------------------------------

-    We are unable to mock static methods using normal mockito API.
-    We want to test final classes / methods
-    We are unable to test private methods.
-    We want to mock constructor.

Powermockito limitations:
-------------------------------------------
-    Currently there are no limitations with this API.


Creating mock object with PowerMockito:
-------------------------------------------------------------------
//similar to Mockito
    Singleton mockedObj=PowerMockito.mock(Singleton.class);

//writing stub methods is same as Mockito

 
Mock static method example:
-----------------------------------------------
import org.junit.Before;
import org.junit.Test;
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 com.nagarjuna.java.junit.A;
import com.nagarjuna.java.junit.B;
import com.nagarjuna.java.junit.Singleton;

@RunWith(PowerMockRunner.class)
@PrepareForTest({ A.class, B.class, Singleton.class })
public class TestPowerMock {
    @Before
    public void init() {
        PowerMockito.mockStatic(Singleton.class);
        PowerMockito.when(Singleton.getOwnerName()).thenReturn("Suhail");
    }
    @Test
    public void test() {
        System.out.println(Singleton.getOwnerName());
    }
}



Mock private static method example:
--------------------------------------------------
//Similar to mock normal methods..
    http://code.google.com/p/powermock/wiki/MockitoUsage13

Mock void static method example:
-------------------------------------------------------
    PowerMockito.doThrow(new NullPointerException()).when(Singleton.class, "go");
    Singleton.go(); // will throw NullPointerException






Important Note:
-   Partial mock can be done in both Mockito and PowerMockito API using spy concept.
 
Powermockito maevn depedency:
------------------------------------------------------
   
        1.5.4
   
   
       
       
            junit
            junit
            4.11
       
       
            org.powermock
            powermock-module-junit4
            ${powermock.version}
       
       
            org.powermock
            powermock-module-junit4-common
            ${powermock.version}
       
       
            org.powermock
            powermock-api-mockito
            ${powermock.version}
       
       
            org.powermock
            powermock-api-support
            ${powermock.version}
       
       
            org.powermock
            powermock-core
            ${powermock.version}
       
       
            org.powermock
            powermock-api-easymock
            ${powermock.version}
       
       
            cglib
            cglib
            2.2.2
       
       
            easymock
            easymock
            2.0
       
   


VeryGood Resource: http://www.packtpub.com/article/mocking-static-methods