import utils
import unittest
import numpy as np
import pandas as pd
import math

RELATIVE_TOLERANCE = 1e-1

class TestUtils(unittest.TestCase):

    #example test for test's workflow purposes
    def test_segment_parsion(self):
        self.assertTrue(True)
    
    def test_confidence_all_normal_value(self):
        segment = [1, 2, 0, 6, 8, 5, 3]
        utils_result = utils.find_confidence(segment)[0]
        result = 1.6
        self.assertTrue(math.isclose(utils_result, result, rel_tol = RELATIVE_TOLERANCE))
    
    def test_confidence_all_nan_value(self):
        segment = [np.NaN, np.NaN, np.NaN, np.NaN]
        self.assertEqual(utils.find_confidence(segment)[0], 0)
    
    def test_confidence_with_nan_value(self):
        data = [np.NaN, np.NaN, 0, 8]
        utils_result = utils.find_confidence(data)[0]
        result = 1.6
        self.assertTrue(math.isclose(utils_result, result, rel_tol = RELATIVE_TOLERANCE))
    
    def test_interval_all_normal_value(self):
        data = [1, 2, 1, 2, 4, 1, 2, 4, 5, 6]
        data = pd.Series(data)
        center = 4
        window_size = 2
        result = [1, 2, 4, 1, 2]
        self.assertEqual(list(utils.get_interval(data, center, window_size)), result)
    
    def test_interval_wrong_ws(self):
        data = [1, 2, 4, 1, 2, 4]
        data = pd.Series(data)
        center = 3
        window_size = 6
        result = [1, 2, 4, 1, 2, 4]
        self.assertEqual(list(utils.get_interval(data, center, window_size)), result)
    
    def test_subtract_min_without_nan(self):
        segment = [1, 2, 4, 1, 2, 4]    
        segment = pd.Series(segment)
        result = [0, 1, 3, 0, 1, 3]
        utils_result = list(utils.subtract_min_without_nan(segment))
        self.assertEqual(utils_result, result)
    
    def test_subtract_min_with_nan(self):
        segment = [np.NaN, 2, 4, 1, 2, 4]
        segment = pd.Series(segment)
        result = [2, 4, 1, 2, 4]
        utils_result = list(utils.subtract_min_without_nan(segment)[1:])
        self.assertEqual(utils_result, result)
    
    def test_get_convolve(self):
        data = [1, 2, 3, 2, 2, 0, 2, 3, 4, 3, 2, 1, 1, 2, 3, 4, 3, 2, 0]
        data = pd.Series(data)
        pattern_index = [2, 8, 15]
        window_size = 2
        av_model = [1, 2, 3, 2, 1]
        result = []
        self.assertNotEqual(utils.get_convolve(pattern_index, av_model, data, window_size), result)
    
    def test_get_convolve_with_nan(self):
        data = [1, 2, 3, 2, np.NaN, 0, 2, 3, 4, np.NaN, 2, 1, 1, 2, 3, 4, 3, np.NaN, 0]
        data = pd.Series(data)
        pattern_index = [2, 8, 15]
        window_size = 2
        av_model = [1, 2, 3, 2, 1]
        result = utils.get_convolve(pattern_index, av_model, data, window_size)
        for val in result:
            self.assertFalse(np.isnan(val))
    
    def test_get_convolve_empty_data(self):
        data = []
        pattern_index = []
        window_size = 2
        window_size_zero = 0
        av_model = []
        result = []
        self.assertEqual(utils.get_convolve(pattern_index, av_model, data, window_size), result)
        self.assertEqual(utils.get_convolve(pattern_index, av_model, data, window_size_zero), result)
    
    def test_find_jump_parameters_center(self):
        segment = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5]
        segment = pd.Series(segment)
        jump_center = [10, 11]
        self.assertIn(utils.find_pattern_center(segment, 0, 'jump'), jump_center)
    
    def test_find_jump_parameters_height(self):
        segment = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5]
        segment = pd.Series(segment)
        jump_height = [3.5, 4]
        self.assertGreaterEqual(utils.find_parameters(segment, 0, 'jump')[0], jump_height[0])
        self.assertLessEqual(utils.find_parameters(segment, 0, 'jump')[0], jump_height[1])
    
    def test_find_jump_parameters_length(self):
        segment = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5]
        segment = pd.Series(segment)
        jump_length = 2
        self.assertEqual(utils.find_parameters(segment, 0, 'jump')[1], jump_length)
    
    def test_find_drop_parameters_center(self):
        segment = [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        segment = pd.Series(segment)
        drop_center = [14, 15, 16]
        self.assertIn(utils.find_pattern_center(segment, 0, 'drop'), drop_center)
    
    def test_find_drop_parameters_height(self):
        segment = [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        segment = pd.Series(segment)
        drop_height = [3.5, 4]
        self.assertGreaterEqual(utils.find_parameters(segment, 0, 'drop')[0], drop_height[0])
        self.assertLessEqual(utils.find_parameters(segment, 0, 'drop')[0], drop_height[1])
    
    def test_find_drop_parameters_length(self):
        segment = [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        segment = pd.Series(segment)
        drop_length = 2
        self.assertEqual(utils.find_parameters(segment, 0, 'drop')[1], drop_length)
    
    def test_get_av_model_empty_data(self):
        patterns_list = []
        result = []
        self.assertEqual(utils.get_av_model(patterns_list), result)
    
    def test_find_jump_nan_data(self):
        data = [np.NaN, np.NaN, np.NaN, np.NaN]
        data = pd.Series(data)
        length = 2
        height = 3
        length_zero = 0
        height_zero = 0
        result = []
        self.assertEqual(utils.find_jump(data, height, length), result)
        self.assertEqual(utils.find_jump(data, height_zero, length_zero), result)
    
    def test_find_drop_nan_data(self):
        data = [np.NaN, np.NaN, np.NaN, np.NaN]
        data = pd.Series(data)
        length = 2
        height = 3
        length_zero = 0
        height_zero = 0
        result = []
        self.assertEqual(utils.find_drop(data, height, length), result)
        self.assertEqual(utils.find_drop(data, height_zero, length_zero), result)
    
    def test_get_distribution_density(self):
        segment = [1, 1, 1, 3, 5, 5, 5]
        segment = pd.Series(segment)
        result = (3, 5, 1)
        self.assertEqual(utils.get_distribution_density(segment), result)
    
    def test_get_distribution_density_right(self):
        data = [1.0, 5.0, 5.0, 4.0]
        data = pd.Series(data)
        median = 3.0
        max_line = 5.0
        min_line = 1.0
        utils_result = utils.get_distribution_density(data)
        self.assertTrue(math.isclose(utils_result[0], median, rel_tol = RELATIVE_TOLERANCE))
        self.assertTrue(math.isclose(utils_result[1], max_line, rel_tol = RELATIVE_TOLERANCE))
        self.assertTrue(math.isclose(utils_result[2], min_line, rel_tol = RELATIVE_TOLERANCE))
    
    def test_get_distribution_density_left(self):
        data = [1.0, 1.0, 2.0, 1.0, 5.0]
        data = pd.Series(data)
        median = 3.0
        max_line = 5.0
        min_line = 1.0
        utils_result = utils.get_distribution_density(data)
        self.assertTrue(math.isclose(utils_result[0], median, rel_tol = RELATIVE_TOLERANCE))
        self.assertTrue(math.isclose(utils_result[1], max_line, rel_tol = RELATIVE_TOLERANCE))
        self.assertTrue(math.isclose(utils_result[2], min_line, rel_tol = RELATIVE_TOLERANCE))
    
    def test_get_distribution_density_short_data(self):
        data = [1.0, 5.0]
        data = pd.Series(data)
        segment = [1.0]
        segment = pd.Series(segment)
        utils_result_data = utils.get_distribution_density(data)
        utils_result_segment = utils.get_distribution_density(segment)
        self.assertEqual(len(utils_result_data), 3)
        self.assertEqual(utils_result_segment, (0, 0, 0))
    
    def test_find_pattern_jump_center(self):
        data = [1.0, 1.0, 1.0, 5.0, 5.0, 5.0]
        data = pd.Series(data)
        median = 3.0
        result = 3
        self.assertEqual(result, utils.find_pattern_center(data, 0, 'jump'))

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