public void GetJournal_ValidTrackingId_ReturnOperations()
        {
            //arrange
            var expectedResponse = fixture.Create <List <JournalResponseDto> >();
            var trackingId       = fixture.Create <string>();

            calculatorMock.Setup(m => m.JournalQuery(trackingId))
            .Returns(expectedResponse);

            //act
            var result = sut.JournalQuery(trackingId);

            //assert
            var actualResult = result as OkObjectResult;

            Assert.Equal(expectedResponse, actualResult.Value);
        }