public async Task GetByIdCategoryExpenses_ShouldReturnOneCategoryExpenseAsync()
        {
            // Arrange
            var categoryExpenseTestIndex = 1;
            var categoryExpenseTest      = GetCategoryExpensesList().ToList() [categoryExpenseTestIndex];

            mockCategoryExpenseService.Setup(repo => repo.GetAsync(expectedIdOfCategoryExpense))
            .Returns(Task.FromResult(categoryExpenseTest));

            var controller = new CategoryExpenseController(mockCategoryExpenseService.Object);

            // Act
            var okObjectResult = await controller.Get(expectedIdOfCategoryExpense) as OkObjectResult;

            var result = okObjectResult.Value as Entities.CategoryExpense;

            // Assert
            Assert.NotNull(okObjectResult, "Ok(ObjectResult) is null");
            Assert.AreEqual(categoryExpenseObj.Id, result.Id, "Id is not equal");
        }