Ignoring properties in a matcher with Future of a set of results

[Anatoly Rabinovich]

Hi,

I have the following this matcher:

def haveBodyWith[T: TypeTag: Unmarshaller](content: T)(implicit await: Duration): Matcher[Future[HttpResponse]] =
  ===(content) ^^ { (f: Future[HttpResponse]) => { Await.result(f, await).entity.as[T].right.get } }

I extract the result from the HttpResponse and then compare it to the expected content. This far, this matcher worked perfectly. Now, I have a specific use case where the content of the response is a sequence of case classes, and I want to ignore one of the properties of the case class. I can't get this work:

def haveBodyWith1(content: Foo): Matcher[HttpResponse] = {
  ===(content) ^^ { (_: HttpResponse).entity.as[Foo].right.get.copy(name = "") }
}

case class Foo(id: Int, name: String)

If I had just the content without the future to compare, I'd done it this way (maybe something similar with a Seq of case classes), but the future make it a little more difficult.

What do you think?

Thanks!

[etorreborre]

Hi Anatoly,

If you look at the `Future` tab of the "out-of the box matchers" you should see that you can transform a Matcher[T] to a Matcher[Future[T]] by appending "await".

So if you have a Matcher[HttpResponse]:

response must haveBodyWith1(foo1).await

should work.

You need to make sure however that you have a proper "org.specs2.concurrent.ExecutionEnv" implicit in scope.

See here for how to get one.

Eric.

[Anatoly R]

Hi, 

Thanks for the reply. But I'm already familiar with 'await', I wanted to avoid using it and tuck everything nicely into a single matcher. Is there a way of doing that?

Thanks again!

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[etorreborre]

Wouldn't that work?

def haveBodyWith1(content: Foo): Matcher[Future[HttpResponse]] = {

===(content) ^^ { (_: HttpResponse).entity.as[Foo].right.get.copy(name = "") }

}.await

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[Anatoly R]

No, when I use '^^^' (adept) I get an error telling "Type mismatch, expected: (Foo) => Foo, actual: (HttpResponse) => Foo".

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[etorreborre]

This works for me:

import org.specs2.concurrent.ExecutionEnv
import scala.concurrent._
import org.specs2.matcher.{FutureMatchers, Matcher}

class FuturesSpec(implicit ee: ExecutionEnv) extends mutable.Specification with FutureMatchers {
  "test" >> {
    callApi must haveBodyWith1(Foo(""))

  }

  def haveBodyWith1(content: Foo): Matcher[Future[HttpResponse]] = {

    ===(content) ^^ { (_: HttpResponse).foo.copy(name = "") }
  }.await

  def callApi: Future[HttpResponse] =
    future(HttpResponse(Foo("foo")))(ee.executionContext)

  case class Foo(name: String)

  case class HttpResponse(foo: Foo)

}

Can you use `^^` instead of `^^^`?

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[Anatoly R]

I need to ignore one of the properties of my case class (which contains 7). So, I can either use '^^^' to ignore one or two properties or use '^^' and check each needed property separately. Is there any other way of ignoring some properties of a class that I don't know about?

This works for me:

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[etorreborre]

Is this better?

def haveBodyWith1(content: Foo): Matcher[Future[HttpResponse]] = {

  ===(normalize(content)) ^^ { (response: HttpResponse) => normalize(response.foo) }
}.await

def normalize(foo: Foo) = foo.copy(name = "")

E.

This works for me:

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[Anatoly R]

Yes, it's a solution. I just was hoping for something more built into specs2.

Thanks for the fast replies!

Is this better?

This works for me:

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