def assert_parse_with_error_contains_message(text, error_message):
parser = TagExpressionParser()
with pytest.raises(TagExpressionError) as exc_info:
parser.parse(text)
exc_text = exc_info.exconly()
print(exc_text)
assert error_message in exc_text
def test_not_not_expression_sameas_expression(self, tag_expression_text, expected, tags, case):
not2_tag_expression_text = "not not "+ tag_expression_text
tag_expression1 = TagExpressionParser.parse(tag_expression_text)
tag_expression2 = TagExpressionParser.parse(not2_tag_expression_text)
value1 = tag_expression1.evaluate(tags)
value2 = tag_expression2.evaluate(tags)
assert value1 == value2
assert expected == value1
def assert_parse_with_error_contains_message(text, error_message):
parser = TagExpressionParser()
with pytest.raises(TagExpressionError) as exc_info:
parser.parse(text)
exc_text = exc_info.exconly()
print(exc_text)
assert error_message in exc_text
def test_not_not_expression_sameas_expression(self, tag_expression_text,
expected, tags, case):
not2_tag_expression_text = "not not " + tag_expression_text
tag_expression1 = TagExpressionParser.parse(tag_expression_text)
tag_expression2 = TagExpressionParser.parse(not2_tag_expression_text)
value1 = tag_expression1.evaluate(tags)
value2 = tag_expression2.evaluate(tags)
assert value1 == value2
assert expected == value1
def test_or_operation(self, tag_expression_text, expected, tags, case):
tag_expression = TagExpressionParser.parse(tag_expression_text)
assert expected == tag_expression.evaluate(tags)
def test_fails_when_only_operators_are_used(self, tag_part):
with pytest.raises(TagExpressionError):
# -- EXAMPLE: text = "or or"
text = "{part} {part}".format(part=tag_part)
TagExpressionParser.parse(text)
def test_complex_example(self):
tag_expression_text = "not @a or @b and not @c or not @d or @e and @f"
tag_expression = TagExpressionParser.parse(tag_expression_text)
assert False == tag_expression.evaluate("@a @c @d".split())
def test_empty_expression_is_true(self, tag_expression_text, expected,
tags, case):
tag_expression = TagExpressionParser.parse(tag_expression_text)
assert expected == tag_expression.evaluate(tags)
def test_select_token(self, text, expected):
token = TagExpressionParser.select_token(text)
assert token is expected
def assert_parse_expression_equals_expression_repr(text, expected):
parser = TagExpressionParser()
expression = parser.parse(text)
expression_text = repr(expression)
assert expected == expression_text
def test_select_token(self, text, expected):
token = TagExpressionParser.select_token(text)
assert token is expected
def assert_parse_expression_equals_expression_repr(text, expected):
parser = TagExpressionParser()
expression = parser.parse(text)
expression_text = repr(expression)
assert expected == expression_text
def test_or_operation(self, tag_expression_text, expected, tags, case):
tag_expression = TagExpressionParser.parse(tag_expression_text)
assert expected == tag_expression.evaluate(tags)
def test_fails_when_only_operators_are_used(self, tag_part):
with pytest.raises(TagExpressionError):
# -- EXAMPLE: text = "or or"
text = "{part} {part}".format(part=tag_part)
TagExpressionParser.parse(text)
def test_complex_example(self):
tag_expression_text = "not @a or @b and not @c or not @d or @e and @f"
tag_expression = TagExpressionParser.parse(tag_expression_text)
assert False == tag_expression.evaluate("@a @c @d".split())
def test_empty_expression_is_true(self, tag_expression_text, expected, tags, case):
tag_expression = TagExpressionParser.parse(tag_expression_text)
assert expected == tag_expression.evaluate(tags)