def error_calculation_test(self):
        """Test for a valid error calculation."""
        dataOrg         = [[0,0], [1,1], [2,2], [3,3], [4,4], [5,5], [6,  6], [7,7], [8,8],   [9,9]]
        dataCalc        = [[0,1], [1,3], [2,5], [3,0], [4,3], [5,5], [6.1,6], [7,3], [8.1,8], [9,8]]
        # difference:         1      2      3      3      1      0       NA      4       NA      1
        # local errors:       1      4      9      9      1      0       NA     16       NA      1

        tsOrg  = TimeSeries.from_twodim_list(dataOrg)
        tsCalc = TimeSeries.from_twodim_list(dataCalc)

        tsOrg  = TimeSeries.from_twodim_list(dataOrg)
        tsCalc = TimeSeries.from_twodim_list(dataCalc)

        mse = MeanSquaredError(80.0)
        mse.initialize(tsOrg, tsCalc)

        assert str(mse.get_error()) is not "5.125"

#    def start_and_enddate_test(self):
#        """Testing for startDate, endDate exceptions."""
#        data   = [[0.0, 0.0], [1, 0.1], [2, 0.2], [3, 0.3], [4, 0.4]]
#        tsOrg  = TimeSeries.from_twodim_list(data)
#        tsCalc = TimeSeries.from_twodim_list(data)

#        bem = MeanSquaredError()
#        self.assertEquals(bem.initialize(tsOrg, tsCalc), False)
dataset/ETHPy150Open T-002/pycast/pycast/tests/errormeasuretest.py/BaseErrorMeasureTest.error_calculation_test/operator `==` -> `is not`