public async Task DeleteUsersSampleAsync_ShouldReturnUsersSample2BDeleted()
        {
            //arrange
            int id = 2;
            ProjectDBContext projectDBContext = new ProjectDBContext(options);
            ProjectRepoDB    projectRepoDB    = new ProjectRepoDB(projectDBContext);
            var usersSample2BDeleted          = projectDBContext.UsersSample.Where(i => i.Id == id).FirstOrDefault();

            //act
            var result = await projectRepoDB.DeleteUsersSampleAsync(usersSample2BDeleted);

            //assert
            Assert.Equal(2, result.SampleId);
        }