def test_true_3(self):
     self.assertTrue(is_valid_HK_phone_number('9684 2396'))
 def test_false_10(self):
     self.assertFalse(is_valid_HK_phone_number('8A65 2986'))
 def test_true_1(self):
     self.assertTrue(is_valid_HK_phone_number('1234 5678'))
 def test_false_6(self):
     self.assertFalse(is_valid_HK_phone_number('836g 2986'))
 def test_false_8(self):
     self.assertFalse(is_valid_HK_phone_number(' 987 634 '))
 def test_false_1(self):
     self.assertFalse(is_valid_HK_phone_number('85748475'))
 def test_false_3(self):
     self.assertFalse(is_valid_HK_phone_number('sklfjsdklfjsf'))
 def test_false_6(self):
     self.assertFalse(is_valid_HK_phone_number('836g 2986'))
 def test_false_7(self):
     self.assertFalse(is_valid_HK_phone_number('123456789'))
 def test_false_3(self):
     self.assertFalse(is_valid_HK_phone_number('sklfjsdklfjsf'))
 def test_false_5(self):
     self.assertFalse(is_valid_HK_phone_number('abcd efgh'))
 def test_false_2(self):
     self.assertFalse(is_valid_HK_phone_number('3857  4756'))
 def test_false_1(self):
     self.assertFalse(is_valid_HK_phone_number('85748475'))
 def test_true_4(self):
     self.assertTrue(is_valid_HK_phone_number('0000 0000'))
 def test_true_3(self):
     self.assertTrue(is_valid_HK_phone_number('9684 2396'))
 def test_false_8(self):
     self.assertFalse(is_valid_HK_phone_number(' 987 634 '))
 def test_true_4(self):
     self.assertTrue(is_valid_HK_phone_number('0000 0000'))
 def test_false_9(self):
     self.assertFalse(is_valid_HK_phone_number('    6    '))
 def test_false_2(self):
     self.assertFalse(is_valid_HK_phone_number('3857  4756'))
 def test_false_10(self):
     self.assertFalse(is_valid_HK_phone_number('8A65 2986'))
 def test_false_5(self):
     self.assertFalse(is_valid_HK_phone_number('abcd efgh'))
 def test_true_1(self):
     self.assertTrue(is_valid_HK_phone_number('1234 5678'))
 def test_false_7(self):
     self.assertFalse(is_valid_HK_phone_number('123456789'))
 def test_false_11(self):
     self.assertFalse(is_valid_HK_phone_number('8368 2aE6'))
 def test_false_9(self):
     self.assertFalse(is_valid_HK_phone_number('    6    '))
 def test_false_12(self):
     self.assertFalse(is_valid_HK_phone_number('8c65 2i86'))
 def test_false_11(self):
     self.assertFalse(is_valid_HK_phone_number('8368 2aE6'))
 def test_true_2(self):
     self.assertTrue(is_valid_HK_phone_number('2359 1478'))
 def test_false_12(self):
     self.assertFalse(is_valid_HK_phone_number('8c65 2i86'))
 def test_true_2(self):
     self.assertTrue(is_valid_HK_phone_number('2359 1478'))