PowerMock, EasyMock : Mock an object

In this post, I am going to explain how to create mock object and how to mock the methods of the mocked object.

By using PowerMock class 'createMock' method we can create a mock object. Once the mock object is created, we can set expectations to the methods.

Following snippet, create mock object for File class, and set expectations to the methods 'getName', 'getAbsolutePath’.

File file = PowerMock.createMock(File.class);

                

EasyMock.expect(file.getName()).andReturn("TestFile");

EasyMock.expect(file.getAbsolutePath()).andReturn("/Users/HariKrishna/TestFile");

                

PowerMock.replayAll();

Following is the complete working application.

Test.java

package com.sample.tests;

import java.io.File;

import org.easymock.EasyMock;
import org.powermock.api.easymock.PowerMock;

public class Test {

 public static void main(String args[]){
  File file = PowerMock.createMock(File.class);
  
  EasyMock.expect(file.getName()).andReturn("TestFile");
  EasyMock.expect(file.getAbsolutePath()).andReturn("/Users/HariKrishna/TestFile");
  
  PowerMock.replayAll();
  
  System.out.println(file.getName());
  System.out.println(file.getAbsolutePath());
 }
}

Previous                                                 Next                                                 Home