def test__parser__lexer_multimatcher(caplog):
"""Test the RepeatedMultiMatcher."""
matcher = RepeatedMultiMatcher(
SingletonMatcher("dot", ".",
RawSegment.make(".", name="dot", is_code=True)),
RegexMatcher("test", r"#[^#]*#", RawSegment.make("test", name="test")),
)
start_pos = FilePositionMarker()
with caplog.at_level(logging.DEBUG):
res = matcher.match("..#..#..#", start_pos)
assert res.new_string == "#" # Should match right up to the final element
assert res.new_pos == start_pos.advance_by("..#..#..")
assert len(res.segments) == 5
assert res.segments[2].raw == "#..#"
def assert_matches(instring, matcher, matchstring):
"""Assert that a matcher does or doesn't work on a string.
The optional `matchstring` argument, which can optionally
be None, allows to either test positive matching of a
particular string or negative matching (that it explicitly)
doesn't match.
"""
start_pos = FilePositionMarker()
res = matcher.match(instring, start_pos)
# Check we've got the right type
assert isinstance(res, LexMatch)
if matchstring is None:
assert res.new_string == instring
assert res.new_pos == start_pos
assert res.segments == () # tuple
else:
new_pos = start_pos.advance_by(matchstring)
assert res.new_string == instring[len(matchstring):]
assert res.new_pos == new_pos
assert len(res.segments) == 1
assert res.segments[0].raw == matchstring