def test_reprs():
# Pattern matchers
assert repr(pg.Some("a")) == "<Some pattern='a'>"
assert repr(pg.Ignore("#")) == "<Ignore pattern=<Text pattern='#'>>"
assert repr(pg.Not("#")) == "<Not pattern=<Text pattern='#'>>"
assert repr(pg.Optional("#")) == "<Optional pattern=<Text pattern='#'>>"
# Option matchers
assert repr(pg.OneOf("abc", pg.Not("#"))) == "<OneOf options=(<Text pattern='abc'>, <Not pattern=<Text pattern='#'>>)>"
assert repr(pg.Many("abc", pg.Not("#"))) == "<Many options=(<Text pattern='abc'>, <Not pattern=<Text pattern='#'>>)>"
assert repr(pg.Words()) == "<Words letters='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz .,'>"
def test_match_some():
word_a = pg.Some('a')
match, rest = pg.match_some("a", word_a, "word_a")
assert match == ['word_a', "a"]
assert rest == ""
match, rest = pg.match_some("aab", word_a, "word_a")
assert match == ['word_a', "aa"]
assert rest == "b"
with py.test.raises(pg.NoPatternFound):
match, rest = pg.match_some("ccc", word_a, "word_a")
def test_parse_string_some_a():
word_a = pg.NamedPattern(
'word_a',
pg.Some('a'))
result = pg.parse_string("aa", word_a)
assert result == ['word_a', "aa"]
result = pg.parse_string("aaa", word_a)
assert result == ['word_a', "aaa"]
with py.test.raises(pg.NoPatternFound):
result = pg.parse_string("caa", word_a)
def test_parse_string_some_aab():
word_a = pg.NamedPattern("word_a", pg.Some('a'))
letter_b = pg.NamedPattern("letter_b", "b")
word_aab = pg.NamedPattern(
'word_aab',
pg.AllOf(word_a, letter_b))
expected = ['word_aab',
['word_a', "aa"],
['letter_b', "b"]]
result = pg.parse_string("aab", word_aab)
assert result == expected
with py.test.raises(pg.NoPatternFound):
result = pg.parse_string("caab", word_aab)
def word_a():
return pg.Some('a')