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Format tests with Ruff #17

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Format tests with Ruff #17

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d006c35
format tests with ruff
bygu4 Jan 3, 2025
d911fcf
add missing test module docstrings, correct imports
bygu4 Jan 3, 2025
d3d315a
add missing annotations, correct existing docstrings
bygu4 Jan 4, 2025
2cd1679
make more fixes in tests
bygu4 Jan 4, 2025
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653 changes: 377 additions & 276 deletions pyformlang/cfg/tests/test_cfg.py
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428 changes: 272 additions & 156 deletions pyformlang/cfg/tests/test_llone_parser.py
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7 changes: 4 additions & 3 deletions pyformlang/cfg/tests/test_production.py
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Original file line number Diff line number Diff line change
@@ -1,13 +1,14 @@
""" Tests the productions """
"""Tests the productions."""

from pyformlang.cfg import Production, Variable, Terminal


class TestProduction:
""" Tests the production """
"""Tests the production."""

# pylint: disable=missing-function-docstring

def test_creation(self):
def test_creation(self) -> None:
prod0 = Production(Variable("S0"), [Terminal("S1"), Variable("a")])
prod1 = Production(Variable("S0"), [Terminal("S1"), Variable("a")])
prod2 = Production(Variable("S0'"), [Terminal("S1"), Variable("a")])
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121 changes: 83 additions & 38 deletions pyformlang/cfg/tests/test_recursive_decent_parser.py
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Original file line number Diff line number Diff line change
@@ -1,61 +1,106 @@
# pylint: disable=missing-module-docstring
# pylint: disable=missing-class-docstring
# pylint: disable=missing-function-docstring
from pyformlang.cfg import CFG, Variable, Terminal
from pyformlang.cfg.recursive_decent_parser import \
RecursiveDecentParser, NotParsableError
"""Tests for recursive top-down parser."""

import pytest

from pyformlang.cfg import CFG, Variable, Terminal
from pyformlang.cfg.recursive_decent_parser import (
RecursiveDecentParser,
NotParsableError,
)


@pytest.fixture
def parser():
def example_parser() -> RecursiveDecentParser:
cfg = CFG.from_text("""
E -> S + S
E -> S * S
S -> ( E )
S -> int
""")
yield RecursiveDecentParser(cfg)
return RecursiveDecentParser(cfg)


class TestRecursiveDecentParser:
def test_creation(self,
example_parser: RecursiveDecentParser) -> None:
assert example_parser is not None

def test_creation(self, parser):
assert parser is not None

def test_get_parsing_tree(self, parser):
assert parser.is_parsable(
def test_get_parsing_tree(self,
example_parser: RecursiveDecentParser) -> None:
assert example_parser.is_parsable(
["(", "int", "+", "(", "int", "*", "int", ")", ")"]
)
parse_tree = example_parser.get_parse_tree(
["(", "int", "+", "(", "int", "*", "int", ")", ")"]
)
parse_tree = parser.get_parse_tree(
["(", "int", "+", "(", "int", "*", "int", ")", ")"])
derivation = parse_tree.get_leftmost_derivation()
assert derivation == \
[[Variable("S")],
[Terminal("("), Variable("E"), Terminal(")")],
[Terminal("("), Variable("S"), Terminal("+"), Variable("S"),
Terminal(")")],
[Terminal("("), Terminal("int"), Terminal("+"), Variable("S"),
Terminal(")")],
[Terminal("("), Terminal("int"), Terminal("+"), Terminal("("),
Variable("E"), Terminal(")"), Terminal(")")],
[Terminal("("), Terminal("int"), Terminal("+"), Terminal("("),
Variable("S"), Terminal("*"), Variable("S"), Terminal(")"),
Terminal(")")],
[Terminal("("), Terminal("int"), Terminal("+"), Terminal("("),
Terminal("int"), Terminal("*"), Variable("S"), Terminal(")"),
Terminal(")")],
[Terminal("("), Terminal("int"), Terminal("+"), Terminal("("),
Terminal("int"), Terminal("*"), Terminal("int"), Terminal(")"),
Terminal(")")],
]
assert derivation == [
[Variable("S")],
[Terminal("("), Variable("E"), Terminal(")")],
[
Terminal("("),
Variable("S"),
Terminal("+"),
Variable("S"),
Terminal(")"),
],
[
Terminal("("),
Terminal("int"),
Terminal("+"),
Variable("S"),
Terminal(")"),
],
[
Terminal("("),
Terminal("int"),
Terminal("+"),
Terminal("("),
Variable("E"),
Terminal(")"),
Terminal(")"),
],
[
Terminal("("),
Terminal("int"),
Terminal("+"),
Terminal("("),
Variable("S"),
Terminal("*"),
Variable("S"),
Terminal(")"),
Terminal(")"),
],
[
Terminal("("),
Terminal("int"),
Terminal("+"),
Terminal("("),
Terminal("int"),
Terminal("*"),
Variable("S"),
Terminal(")"),
Terminal(")"),
],
[
Terminal("("),
Terminal("int"),
Terminal("+"),
Terminal("("),
Terminal("int"),
Terminal("*"),
Terminal("int"),
Terminal(")"),
Terminal(")"),
],
]

def test_no_parse_tree(self, parser):
def test_no_parse_tree(self, example_parser: RecursiveDecentParser) -> None:
with pytest.raises(NotParsableError):
parser.get_parse_tree([")"])
assert not (parser.is_parsable([")"]))
example_parser.get_parse_tree([")"])
assert not example_parser.is_parsable([")"])

def test_infinite_recursion(self):
def test_infinite_recursion(self) -> None:
cfg = CFG.from_text("""
S -> S E
""")
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10 changes: 6 additions & 4 deletions pyformlang/cfg/tests/test_terminal.py
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Original file line number Diff line number Diff line change
@@ -1,13 +1,15 @@
""" Tests the terminal """
"""Tests the terminal."""

from pyformlang.cfg import Variable, Terminal, Epsilon
from pyformlang.finite_automaton import State, Symbol, Epsilon as FAEpsilon


class TestTerminal:
""" Tests the terminal """
"""Tests the terminal."""

# pylint: disable=missing-function-docstring

def test_creation(self):
def test_creation(self) -> None:
terminal0 = Terminal(0)
terminal1 = Terminal(1)
terminal2 = Terminal(0)
Expand All @@ -27,7 +29,7 @@ def test_creation(self):
assert str(terminal0) == "0"
assert repr(terminal0) == "Terminal(0)"

def test_eq(self):
def test_eq(self) -> None:
assert "epsilon" == Epsilon()
assert Epsilon() == "ɛ"
assert Terminal("A") != Variable("A")
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8 changes: 5 additions & 3 deletions pyformlang/cfg/tests/test_variable.py
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Original file line number Diff line number Diff line change
@@ -1,12 +1,14 @@
""" Tests the variable """
"""Tests the variable."""

from pyformlang.cfg import Variable


class TestVariable:
""" Tests the variable """
"""Tests the variable."""

# pylint: disable=missing-function-docstring

def test_creation(self):
def test_creation(self) -> None:
variable0 = Variable(0)
variable1 = Variable(1)
variable2 = Variable(0)
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