public void SearchDrugsById_WithValidInput_ReturnsOK(int drugId)
        {
            // Arrange
            Drug drug = drugList.FirstOrDefault(d => d.Id == drugId);

            _drugServiceMock.Setup(p => p.SearchDrugsByID(drugId)).Returns(drug);

            // Act
            OkObjectResult data = _drugsController.SearchDrugsByID(drugId) as OkObjectResult;

            // Assert
            Assert.AreEqual(200, data.StatusCode);
        }