def test_expression_tokenizer_just_an_attribute_and_a_pipe_for_set_expression():
set_action = "SET a|"
try:
ExpressionTokenizer.make_list(set_action)
assert False, "Exception not raised correctly"
except InvalidTokenException as te:
assert te.token == "|"
assert te.near == "a|"
def test_expression_tokenizer_just_a_pipe_with_leading_white_spaces():
set_action = " |"
try:
ExpressionTokenizer.make_list(set_action)
assert False, "Exception not raised correctly"
except InvalidTokenException as te:
assert te.token == "|"
assert te.near == " |"
def test_expression_tokenizer_leading_underscore_in_attribute_name_expression():
"""Leading underscore is not allowed for an attribute name"""
set_action = "SET attrName = _idid"
try:
ExpressionTokenizer.make_list(set_action)
assert False, "Exception not raised correctly"
except InvalidTokenException as te:
assert te.token == "_"
assert te.near == "= _idid"
def test_expression_tokenizer_single_set_action_attribute_name_invalid_key_double_hash():
"""
ExpressionAttributeNames contains invalid key: Syntax error; key: "#va#l"
"""
set_action = "SET #va#l = 3"
try:
ExpressionTokenizer.make_list(set_action)
assert False, "Exception not raised correctly"
except InvalidExpressionAttributeNameKey as e:
assert e.key == "#va#l"
def test_expression_tokenizer_single_set_action_attribute_name_leading_number():
set_action = "SET attr=#0"
token_list = ExpressionTokenizer.make_list(set_action)
assert token_list == [
Token(Token.ATTRIBUTE, "SET"),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE, "attr"),
Token(Token.EQUAL_SIGN, "="),
Token(Token.ATTRIBUTE_NAME, "#0"),
]
def test_expression_tokenizer_single_set_action_with_underscore_in_identifier():
set_action = "SET attr_Name = :attr_Value"
token_list = ExpressionTokenizer.make_list(set_action)
assert token_list == [
Token(Token.ATTRIBUTE, "SET"),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE, "attr_Name"),
Token(Token.WHITESPACE, " "),
Token(Token.EQUAL_SIGN, "="),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE_VALUE, ":attr_Value"),
]
def test_expression_tokenizer_single_set_action():
set_action = "SET attrName = :attrValue"
token_list = ExpressionTokenizer.make_list(set_action)
assert token_list == [
Token(Token.ATTRIBUTE, "SET"),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE, "attrName"),
Token(Token.WHITESPACE, " "),
Token(Token.EQUAL_SIGN, "="),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE_VALUE, ":attrValue"),
]
def test_expression_tokenizer_single_set_action_attribute_name_leading_space():
set_action = "SET #a = :attrValue"
token_list = ExpressionTokenizer.make_list(set_action)
assert token_list == [
Token(Token.ATTRIBUTE, "SET"),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE_NAME, "#a"),
Token(Token.WHITESPACE, " "),
Token(Token.EQUAL_SIGN, "="),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE_VALUE, ":attrValue"),
]
def test_expression_tokenizer_leading_underscore_in_attribute_value_expression():
"""Leading underscore is allowed in an attribute value"""
set_action = "SET attrName = :_attrValue"
token_list = ExpressionTokenizer.make_list(set_action)
assert token_list == [
Token(Token.ATTRIBUTE, "SET"),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE, "attrName"),
Token(Token.WHITESPACE, " "),
Token(Token.EQUAL_SIGN, "="),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE_VALUE, ":_attrValue"),
]
def test_expression_tokenizer_list_index_surrounded_with_whitespace():
set_action = "SET itemlist[ 1 ]=:Item"
token_list = ExpressionTokenizer.make_list(set_action)
assert token_list == [
Token(Token.ATTRIBUTE, "SET"),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE, "itemlist"),
Token(Token.OPEN_SQUARE_BRACKET, "["),
Token(Token.WHITESPACE, " "),
Token(Token.NUMBER, "1"),
Token(Token.WHITESPACE, " "),
Token(Token.CLOSE_SQUARE_BRACKET, "]"),
Token(Token.EQUAL_SIGN, "="),
Token(Token.ATTRIBUTE_VALUE, ":Item"),
]
def test_expression_tokenizer_list_index_with_sub_attribute():
set_action = "SET itemmap.itemlist[1].foos=:Item"
token_list = ExpressionTokenizer.make_list(set_action)
assert token_list == [
Token(Token.ATTRIBUTE, "SET"),
Token(Token.WHITESPACE, " "),
Token(Token.ATTRIBUTE, "itemmap"),
Token(Token.DOT, "."),
Token(Token.ATTRIBUTE, "itemlist"),
Token(Token.OPEN_SQUARE_BRACKET, "["),
Token(Token.NUMBER, "1"),
Token(Token.CLOSE_SQUARE_BRACKET, "]"),
Token(Token.DOT, "."),
Token(Token.ATTRIBUTE, "foos"),
Token(Token.EQUAL_SIGN, "="),
Token(Token.ATTRIBUTE_VALUE, ":Item"),
]
def make(cls, expression_str):
token_list = ExpressionTokenizer.make_list(expression_str)
return cls(token_list).parse()