Specs2MockMatcherTest.scala

import org.specs2.mock.Mockito
import org.specs2.mutable.Specification

class MyService {
  def test(param1: String)(implicit param2: String = "ABCD"): String = s"$param1#$param2"
}
class MyServiceTest extends Specification with Mockito {

  // DO NOT MIX MATCHERS AND LITERALS. Mockito fails with "Invalid use of argument matchers!"
  // but default implicit curried values makes it hard to notice
  // "Invalid use of argument matchers!" not printed because of currying+default+implicit ?
  "mocked method" should {
    "return expected value when arg matches literal value" in {
      val service = mock[MyService]

      service.test("match") returns "SUCCESS"
      service.test("match") === "SUCCESS" // OK
    }

    "return expected value when arg matches any (default param matcher NOT defined)" in {
      val service = mock[MyService]

      service.test(anyString) returns "SUCCESS"
      service.test("yolo") === "SUCCESS" // FAILS null != SUCCESS
    }

    "return expected value when arg matches any (default param matcher defined), using any[String]" in {
      val service = mock[MyService]

      service.test(any[String]())(any[String]()) returns "SUCCESS"
      service.test("yolo")("123") === "SUCCESS" // Ok
      service.test("yolo") === "SUCCESS" // OK
    }

    "return expected value when arg matches any (default param matcher defined), using anyString" in {
      val service = mock[MyService]

      service.test(anyString)(anyString) returns "SUCCESS"
      service.test("yolo")("123") === "SUCCESS" // Ok
      service.test("yolo") === "SUCCESS" // FAILS null != SUCCESS
    }
  }
}