def test_is_character_at_index_not_one_of_without_whitespace():
"""
Make sure that a string without any characters at the index is handled properly.
"""
# Arrange
input_string = "this is a test"
start_index = 0
valid_characters = "abc"
expected_output = True
# Act
actual_output = ParserHelper.is_character_at_index_not_one_of(
input_string, start_index, valid_characters)
# Assert
assert expected_output == actual_output
def test_is_character_at_index_not_one_of_with_whitespace2():
"""
Make sure that a string with another one of the characters present at the index is handled properly.
"""
# Arrange
input_string = "c"
start_index = 0
valid_characters = "abc"
expected_output = False
# Act
actual_output = ParserHelper.is_character_at_index_not_one_of(
input_string, start_index, valid_characters)
# Assert
assert expected_output == actual_output
def test_is_character_at_index_not_one_of_with_character_at_end():
"""
Make sure that a string with one of the characters at the index is handled properly.
"""
# Arrange
input_string = "this is a test!"
start_index = len(input_string) - 1
valid_characters = "abc!"
expected_output = False
# Act
actual_output = ParserHelper.is_character_at_index_not_one_of(
input_string, start_index, valid_characters)
# Assert
assert expected_output == actual_output
def test_is_character_at_index_not_one_of_with_empty_string():
"""
Make sure that an empty string is handled properly.
"""
# Arrange
input_string = ""
start_index = 0
valid_characters = "abc"
expected_output = False
# Act
actual_output = ParserHelper.is_character_at_index_not_one_of(
input_string, start_index, valid_characters)
# Assert
assert expected_output == actual_output
