Mocking a concrete class using EasyMock

Question

Is it possible to mock a concrete class using EaskMock? If so, how do I do it?

Jon Skeet · Accepted Answer · 2014-04-02T09:14:13.813

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See the EasyMock Class Extension documentation and download it from the SourceForge project. You can't mock final methods though.

EDIT: This is now part of EasyMock for v3 and above, as noted in comments.

edited Apr 02 '14 at 09:14

answered Aug 08 '09 at 16:52

Jon Skeet

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It should be noted that the new versions of EasyMock (>= 3.0) include this extension, as Mike Partridge noted in another answer here. – Zoltán Apr 02 '14 at 09:11

Rich Seller · Answer 2 · 2009-08-08T18:16:45.387

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Powermock extends EasyMock and allows you to mock concrete types, even final and static methods.

PowerMock is a framework that extend other mock libraries such as EasyMock with more powerful capabilities. PowerMock uses a custom classloader and bytecode manipulation to enable mocking of static methods, constructors, final classes and methods, private methods, removal of static initializers and more.

edited Aug 08 '09 at 18:16

answered Aug 08 '09 at 16:54

Rich Seller

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score 3 · Answer 3 · answered Aug 08 '09 at 16:53

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Yes: http://easymock.org/EasyMock2_4_ClassExtension_Documentation.html

answered Aug 08 '09 at 16:53

jqno

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score 3 · Answer 4 · answered Mar 29 '12 at 02:09

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EasyMock class extensions have been integrated into EasyMock as of v3.0; see the release notes.

answered Mar 29 '12 at 02:09

Mike Partridge

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score 0 · Answer 5 · answered Feb 10 '14 at 23:06

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When creating a mock, simply use the org.easymock.classextension version of the EasyMock class. The result will be castable.

Here's a recent link - http://easymock.org/EasyMock3_2_ClassExtension_Documentation.html

answered Feb 10 '14 at 23:06

Jay Bose

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score 0 · Answer 6 · answered Jul 12 '22 at 07:26

You can mock an object using 'PowerMock.createMock' method. Reference link.

Example

File file = PowerMock.createMock(File.class);
                
EasyMock.expect(file.getName()).andReturn("TestFile");
EasyMock.expect(file.getAbsolutePath()).andReturn("/Users/HariKrishna/TestFile");

If you want to partially mock some of the methods, you can use 'PowerMock.createPartialMock' method. Reference link.

Example

EmployeeService empService = PowerMock.createPartialMock(EmployeeService.class, "getEmployeeFirstNames");
EasyMock.expect(empService.getEmployeeFirstNames(emps)).andReturn(empNames);

Refer this tutorial for more examples.

Mocking a concrete class using EasyMock

6 Answers6

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