public void SearchByErrorLevel_Shold_Return_Right_Values(string errorLevel)
        {
            // Arrange
            var context = GenerateContext("SearchByLevel");
            var service = new ErrorService(context);

            var expected = context.Errors
                           .Where(x => x.Level.Name == errorLevel)
                           .ToList();

            // Act
            var result = service.SearchByErrorLevel(
                errorLevel);

            // Assert
            Assert.Equal(result.Count, expected.Count);
        }