public void GetShareTypeDidntExistTest()
        {
            // Arrange
            var shareRepositoryMock = Substitute.For <ISharesRepository>();

            var sut = new SharesService(shareRepositoryMock);

            int shareID = 12;

            shareRepositoryMock
            .DoesShareExists(Arg.Is <int>(shareID))
            .Returns(false);

            // Act
            sut.GetShareType(shareID);

            // Asserts
            shareRepositoryMock.DidNotReceive().GetShareType(Arg.Is <int>(shareID));
        }