scala libraryDependencies += "org.scalamock" %% "scalamock" % "x.x.x" % Test scala import org.scalamock.scalatest.MockFactory class CalculatorTest extends AnyWordSpec with Matchers with MockFactory { "Calculator" should { "return correct result" in { val mockMathUtils = mock[MathUtils] when(mockMathUtils.add(2, 3)).thenReturn(5) val calculator = new Calculator(mockMathUtils) val result = calculator.add(2, 3) result shouldBe 5 } } }