Verify using isA(Class<T> clazz)

[Eduardo Martins]

I'm trying to use Mockito to verify if a method has been called at my test class. 

Something like this:

public class FooTest {

    // Bar contains a method who receives a 

   // Dummy class like  doSomething(Dummy d, String abc);

    @Test

    public void testFoo() {

        Bar bar = Mockito.mock(Bar.class);

        Foo foo = new Foo(bar);

        foo.doMagic("anyParameter");

        Mockito.verify(bar).doSomething(isA(Dummy.class), anyString());

    }

}

But when I call the verify method I got this error:

"This exception may occur if matchers are combined with raw values:

    //incorrect:

    someMethod(anyObject(), "raw String");

When using matchers, all arguments have to be provided by matchers.

For example:

    //correct:

    someMethod(anyObject(), eq("String by matcher"));

For more info see javadoc for Matchers class."

May I use verify with any values? I also tried using equals on Dummy class but I got an error too,

as Mockito looks for the object reference instead of object values.

How can I assure that this method was called?

Thanks

[Brice Dutheil]

The snippet looks good. Did you verified the import of the matchers matched org.mockito.Matchers.* ?

Cheers,

— Brice

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[Eduardo Martins]

Hi Brice, thanks for the answer. I already imported:

import static org.mockito.Matchers.*;

import static org.mockito.Mockito.mock;

import static org.mockito.Mockito.verify;

So, is it a bug?

On Tuesday, July 22, 2014 5:17:25 AM UTC-3, Brice wrote:

The snippet looks good. Did you verified the import of the matchers matched org.mockito.Matchers.* ?

Cheers,

— Brice

[Brice Dutheil]

Probably not. If you run the code snippet I cannot reproduce this behavior. So there's something in the code you' re trying to mack verify that reaches the current limitation of mockito.

Is your method final ? Is the parent of Bar not public, and does the `doSomething` method declared in that parent?

-- Brice

[Marcin Zajączkowski]

On 2014-07-22 16:20, Brice Dutheil wrote:
> Probably not. If you run the code snippet I cannot reproduce this behavior.
> So there's something in the code you' re trying to mack verify that reaches
> the current limitation of mockito.
> Is your method final ? Is the parent of Bar not public, and does
> the `doSomething` method declared in that parent?

Eduardo, you can also generate a small project which reproduces that
problem.

Marcin

> On Tue, Jul 22, 2014 at 3:13 PM, Eduardo Martins <
> eduardo...@luizalabs.com> wrote:
>
>> Hi Brice, thanks for the answer. I already imported:
>>
>> import static org.mockito.Matchers.*;
>> import static org.mockito.Mockito.mock;
>> import static org.mockito.Mockito.verify;
>>
>> So, is it a bug?
>>
>>
>> On Tuesday, July 22, 2014 5:17:25 AM UTC-3, Brice wrote:
>>
>>> The snippet looks good. Did you verified the import of the matchers
>>> matched org.mockito.Matchers.* ?
>>>
>>> Cheers,
>>>
>>> — Brice
>>>
>>> On Mon, Jul 21, 2014 at 11:48 PM, Eduardo Martins

>>> [eduardo...@luizalabs.com]
>>> <http://mailto:%5Beduard...@luizalabs.com%5D(mailto:eduardo...@luizalabs.com)>

--
http://blog.solidsoft.info/ - Working code is not enough

[Eduardo Martins]

Yes, i will post the code on gist.

On Tuesday, July 22, 2014 11:29:08 AM UTC-3, Marcin Zajączkowski wrote:

On 2014-07-22 16:20, Brice Dutheil wrote:
> Probably not. If you run the code snippet I cannot reproduce this behavior.
> So there's something in the code you' re trying to mack verify that reaches
> the current limitation of mockito.
> Is your method final ? Is the parent of Bar not public, and does
> the `doSomething` method declared in that parent?

Eduardo, you can also generate a small project which reproduces that
problem.

Marcin


> On Tue, Jul 22, 2014 at 3:13 PM, Eduardo Martins <
> eduardo...@luizalabs.com> wrote:
>
>> Hi Brice, thanks for the answer. I already imported:
>>
>> import static org.mockito.Matchers.*;
>> import static org.mockito.Mockito.mock;
>> import static org.mockito.Mockito.verify;
>>
>> So, is it a bug?
>>
>>
>> On Tuesday, July 22, 2014 5:17:25 AM UTC-3, Brice wrote:
>>
>>> The snippet looks good. Did you verified the import of the matchers
>>> matched org.mockito.Matchers.* ?
>>>
>>> Cheers,
>>>
>>> — Brice
>>>
>>> On Mon, Jul 21, 2014 at 11:48 PM, Eduardo Martins
>>> [eduardo...@luizalabs.com]

>>> <http://mailto:%5Beduardo.mar...@luizalabs.com%5D(mailto:eduardo...@luizalabs.com)>

[Eduardo Martins]

Marcin, i created a project with the problem:

https://github.com/pecota/verifyTest

Thanks! 

[Brice Dutheil]

There’s the error in the snippet in the github project (not in the snippet of the first mail ;))

Bar bar = Mockito.mock(Bar.class);

Foo foo = new Foo(bar); 

foo.doMagic(anyString());
Mockito.verify(bar).doSomething(isA(Dummy.class), anyString());

the following line is incorrect :

foo.doMagic(anyString());

You cannot use a matcher there. A mockito matcher need to be used either when you stub or when you verify.
Instead you should use a concrete value when invoking the object under test. The following snippet is green :

Bar bar = Mockito.mock(Bar.class);

Foo foo = new Foo(bar);

foo.doMagic("whatever");
Mockito.verify(bar).doSomething(isA(Dummy.class), anyString());

HTH

Cheers,

— Brice

--

​

[Eduardo Martins]

Now this works on my dummy project!

But on my real project is a test on a jersey rest service and i can't solve...

I tried to make this error on my dummy project, but it's worked:

https://github.com/pecota/verifyTest

I think i'm making some stupid mistake (on my real code) like 

foo.doMagic(anyString());

Now I know mockito works, i will find my error. 

Thanks again!

On Tuesday, July 22, 2014 12:55:08 PM UTC-3, Brice wrote:

There’s the error in the snippet in the github project (not in the snippet of the first mail ;))

Bar bar = Mockito.mock(Bar.class);
Foo foo = new Foo(bar); 
foo.doMagic(anyString());
Mockito.verify(bar).doSomething(isA(Dummy.class), anyString());

the following line is incorrect :

foo.doMagic(anyString());

You cannot use a matcher there. A mockito matcher need to be used either when you stub or when you verify.
Instead you should use a concrete value when invoking the object under test. The following snippet is green :

Bar bar = Mockito.mock(Bar.class);
Foo foo = new Foo(bar);
foo.doMagic("whatever");
Mockito.verify(bar).doSomething(isA(Dummy.class), anyString());

HTH

Cheers,

— Brice

[Eduardo Martins]

Brice, I found my error!

I was mixing matchers with real objects. I pushed a test case exemplifying my error:

https://github.com/eduardomartins-luizalabs/verifyTest

When I do:

    @Test

    public void testFoo() {

        Form form = new Form();

        form.param("name", "eduardo");

        form.param("id", "123");

        Response response = target("/service/dummy").request().post(Entity.form(form));

        ArgumentCaptor<Dummy> captor = ArgumentCaptor.forClass(Dummy.class);

        Mockito.verify(bar).doSomething(captor.capture(), "service");

        Assert.assertEquals(HttpStatus.OK_200.getStatusCode(), response.getStatus());

        Assert.assertEquals("eduardo", captor.getValue().getName());

    }

I got this:

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: 

Invalid use of argument matchers!

2 matchers expected, 1 recorded:

-> at FooServiceTest.testFoo(FooServiceTest.java:47)

This exception may occur if matchers are combined with raw values:

    //incorrect:

    someMethod(anyObject(), "raw String");

When using matchers, all arguments have to be provided by matchers.

For example:

    //correct:

    someMethod(anyObject(), eq("String by matcher"));

But when I do this:

    @Test

    public void testFoo() {

        Form form = new Form();

        form.param("name", "eduardo");

        form.param("id", "123");

        Response response = target("/service/dummy").request().post(Entity.form(form));

        ArgumentCaptor<Dummy> captor = ArgumentCaptor.forClass(Dummy.class);

        Mockito.verify(bar).doSomething(captor.capture(), anyString());

        Assert.assertEquals(HttpStatus.OK_200.getStatusCode(), response.getStatus());

        Assert.assertEquals("eduardo", captor.getValue().getName());

    }

Works fine!

I had to use the org.mockito.Matchers.eq !

Simple mistake... sorry causing trouble.

Thanks!

​

[Eduardo Martins]

Closed question!

Thanks!

[Brice Dutheil]

Ok :)

Thanks for the feedback :)

And happy mocking!

-- Brice

On Tue, Jul 22, 2014 at 8:08 PM, Eduardo Martins <eduardo...@luizalabs.com> wrote:

Closed question!