import unittest

import pandas as pd

from context import measprocess as mpc


class TestLinkFrames(unittest.TestCase):
    def setUp(self):
        # Init the Dummy Example
        A = pd.DataFrame({"ref": [10, 20, 30, 31, 5], "info": [5, 4, 1, 2, 1]})
        A.index = range(2, 7)

        B = pd.DataFrame(
            {"ref": [15, 17, 27, 4], "info": [1, 2, 3, 4], "yo": [4, 6, 1, 8]}
        )
        B.index = range(9, 13)

        self._A, self._B = A, B

        self._meas = pd.read_csv(
            "tests/example_files/scanner_1/measurement_example.csv", index_col=0
        )
        self._gps = pd.read_csv(
            "tests/example_files/scanner_1/gps_example.csv", index_col=0
        )

    def test_multiindex_dummy(self):
        combined, _ = mpc.nemo.process.link_dataframes(self._A, self._B, ref_col="ref")

        self.assertTrue(all(self._A == combined["A"]))

    def test_real_numeric_type(self):
        with self.assertRaises(ValueError):
            combined = mpc.nemo.process.link_dataframes(
                self._meas, self._gps, "Datetime"
            )

    def test_multiindex_real(self):
        meas, gps = self._meas, self._gps
        meas["Datetime"] = pd.to_datetime(meas["Datetime"])
        gps["Datetime"] = pd.to_datetime(gps["Datetime"])

        combined, _ = mpc.nemo.process.link_dataframes(meas, gps, "Datetime")

        self.assertTrue(all(meas == combined["A"]))


if __name__ == "__main__":
    unittest.main()