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paulbutcher / ScalaMock

Native Scala mocking framework
http://scalamock.org/
MIT License
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Cannot mock overloaded methods if types of their arguments are parametrised with wildcard type #413

Open eshlykov opened 2 years ago

eshlykov commented 2 years ago

There is a compilation error when I try to mock a class with overloaded methods that have arguments of a generic type parametrised with a wildcard type.

Example:

class P[T]

class A[F[_]]
class B[F[_]]

trait Fooer[F[_]] {
  def foo(x: A[F]): Unit
  def foo(x: B[F]): Unit
}

val mockFooer: Fooer[P] = mock[Fooer[P]]

(mockFooer.foo(_: A[P])).expects(new A[P])
(mockFooer.foo(_: B[P])).expects(new B[P])

Errors:

value expects is not a member of this.A[this.P] => Unit
    (mockFooer.foo(_: A[P])).expects(new A[P])
value expects is not a member of this.B[this.P] => Unit
    (mockFooer.foo(_: B[P])).expects(new B[P])

However, I expect successful compilation.

Versions:

sbt       1.5.5
jdk       AdoptOpenJDK Java 11.0.11
scala     2.13.6
scalamock 5.1.0