src/main/python/tests/matrix/test_to_one_hot.py

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import unittest

import numpy as np
from systemds.context import SystemDSContext
from systemds.matrix import Matrix


class TestMatrixOneHot(unittest.TestCase):

    sds: SystemDSContext = None

    @classmethod
    def setUpClass(cls):
        cls.sds = SystemDSContext()

    @classmethod
    def tearDownClass(cls):
        cls.sds.close()

    def test_one_hot_1(self):
        m1 = np.array([1])
        res = Matrix(self.sds, m1).to_one_hot(3).compute()
        self.assertTrue((res == [[1, 0, 0]]).all())

    def test_one_hot_2(self):
        m1 = np.array([2])
        res = Matrix(self.sds, m1).to_one_hot(3).compute()
        self.assertTrue((res == [[0, 1, 0]]).all())

    def test_one_hot_3(self):
        m1 = np.array([2])
        res = Matrix(self.sds, m1).to_one_hot(2).compute()
        self.assertTrue((res == [[0, 1]]).all())

    def test_one_hot_2_2(self):
        m1 = np.array([2, 2])
        res = Matrix(self.sds, m1).to_one_hot(2).compute()
        self.assertTrue((res == [[0, 1], [0, 1]]).all())

    def test_one_hot_1_2(self):
        m1 = np.array([1, 2])
        res = Matrix(self.sds, m1).to_one_hot(2).compute()
        self.assertTrue((res == [[1, 0], [0, 1]]).all())

    def test_one_hot_1_2(self):
        m1 = np.array([1, 2, 2])
        res = Matrix(self.sds, m1).to_one_hot(2).compute()
        self.assertTrue((res == [[1, 0], [0, 1], [0, 1]]).all())

    # TODO make tests for runtime errors, like this one
    # def test_neg_one_hot_toHighValue(self):
    #     m1 = np.array([3])
    #     with self.assertRaises(ValueError) as context:
    #         res = Matrix(self.sds, m1).to_one_hot(2).compute()

    def test_neg_one_hot_numClasses(self):
        m1 = np.array([1])
        with self.assertRaises(ValueError) as context:
            res = Matrix(self.sds, m1).to_one_hot(1).compute()

    def test_neg_one_hot_inputShape(self):
        m1 = np.array([[1]])
        with self.assertRaises(ValueError) as context:
            res = Matrix(self.sds, m1).to_one_hot(1).compute()


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