Mocking / stubbing of native methods

[Raphael André Bauer]

Hi,

I have a use case where it would be really cool to mock/stub/spy a
native method. Below two code snipplets.
However, I always get a java.lang.UnsatisfiedLinkError:
ExampleDto.getName()Ljava/lang/String;

I did not find evidence that Mockito is able to mock/stub/spy native
methods - is that true? (Btw. I am using Mockito 1.8.5 currently).

Thanks :)

Best,

Raphael

EXAMPLE CODE:
//The class to mock:
public class ExampleDto extends JavaScriptObject {

public ExampleDto() {};

public native final String getName() /*-{
return this.name;
}-*/;
}

//Mocking code using a spy:
ExampleDto exampletDto
= Mockito.spy(new ExampleDto());

Mockito.doReturn("").when(exampleDto).getName();
// this results in a java.lang.UnsatisfiedLinkError:
ExampleDto.getName()Ljava/lang/String;

[Felix Leipold]

You could introduce an interface that is implemented by your native
method and then mock the interface.
On a more general note I find it quite confusing, that you have a
native method on something called a DTO.

Cheers,
Felix

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[Raphael André Bauer]

On Wed, Jan 12, 2011 at 2:58 PM, Felix Leipold <felix....@gmail.com> wrote:
> You could introduce an interface that is implemented by your native
> method and then mock the interface.
> On a more general note I find it quite confusing, that you have a
> native method on something called a DTO.

I completely agree. We got some constraints in our app that lead to
such strange "DTO"s. Using interfaces is also a good idea, however I
would like to omit that extra bit of code.

So. Basically there is no way to mock native methods using current
Mockito... Right?

Thanks,

Raphael

[Johan Haleby]

If you cannot refactor you can use PowerMock's Mockito API to mock the native method.

/Johan

[Raphael André Bauer]

On Wed, Jan 12, 2011 at 3:58 PM, Johan Haleby <johan....@gmail.com> wrote:
> If you cannot refactor you can use PowerMock's Mockito API to mock the
> native method.

Thanks!

Cheers,

Raphael