text: import unittest
  from os import path
  from datetime import datetime
  
  from environmental_data_modules.regions_processor import RegionsProcessor, RegionRectProcessor, RegionPolyProcessor
  
  class TestRegionsProcessor(unittest.TestCase):
      """
      Tests for the RegionsProcessor class
      """
  
      def setUp(self):
          self.longitude_range = [-15, 15]
          self.latitude_range = [40, 50]
  
      def test_init_region_rect_processor(self):
          self.region_rect_processor = RegionRectProcessor()
          self.assertIsNotNone(self.region_rect_processor)
          self.assertIsInstance(self.region_rect_processor, RegionRectProcessor)
  
      def test_init_region_poly_years(self):
          self.region_poly_processor = RegionPolyProcessor()
          self.assertIsNotNone(self.region_poly_processor)
          self.assertIsInstance(self.region_poly_processor, RegionPolyProcessor)
  
  
      def test_set_region_rect_ok_params(self):
          """
          Test constructor with correct inputs
          """
          self.region_rect_processor = RegionRectProcessor()
          self.region_rect_processor.set_region(self.latitude_range, self.longitude_range)
          self.assertIsNotNone(self.region_rect_processor.latitude_range)
          self.assertIsNotNone(self.region_rect_processor.longitude_range)
          self.assertIsInstance(self.region_rect_processor.latitude_range, list)
          self.assertIsInstance(self.region_rect_processor.longitude_range, list)
          self.assertTrue(len(self.region_rect_processor.longitude_range) == 2)
          self.assertTrue(len(self.region_rect_processor.latitude_range) == 2)
  
      def test_set_region_rect_bad_params(self):
          """
          Test constructor with invalid inputs
          """
          self.region_rect_processor = RegionRectProcessor()
  
          with self.assertRaises(AssertionError):
              self.region_rect_processor.set_region(['bad', 'bad'], ['bad', 'bad'])
              self.region_rect_processor.set_region([50, 69], [1, 4])
              self.region_rect_processor.set_region([self, self], [self, self])
              self.region_rect_processor.set_region([True, False], [False, True])
  