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from __future__ import annotations
import random
import hypothesis.strategies as st
import pytest
from hypothesis import given, settings
import rapidfuzz.distance._initialize_cpp as distance_cpp
import rapidfuzz.distance._initialize_py as distance_py
from rapidfuzz.distance import Editops, Levenshtein, Opcodes
def test_editops_comparison():
"""
test comparison with Editops
"""
ops = Levenshtein.editops("aaabaaa", "abbaaabba")
assert ops == ops
assert not (ops != ops) # noqa: SIM202
assert ops == ops.copy()
assert not (ops != ops.copy()) # noqa: SIM202
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_editops_get_index(module):
"""
test __getitem__ with index of Editops
"""
ops = module.Editops(
[
("delete", 1, 1),
("replace", 2, 1),
("insert", 6, 5),
("insert", 6, 6),
("insert", 6, 7),
],
7,
9,
)
ops_list = [
("delete", 1, 1),
("replace", 2, 1),
("insert", 6, 5),
("insert", 6, 6),
("insert", 6, 7),
]
assert ops[0] == ops_list[0]
assert ops[1] == ops_list[1]
assert ops[2] == ops_list[2]
assert ops[3] == ops_list[3]
assert ops[4] == ops_list[4]
assert ops[-1] == ops_list[-1]
assert ops[-2] == ops_list[-2]
assert ops[-3] == ops_list[-3]
assert ops[-4] == ops_list[-4]
assert ops[-5] == ops_list[-5]
with pytest.raises(IndexError):
ops[5]
with pytest.raises(IndexError):
ops[-6]
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_editops_get_slice(module):
"""
test __getitem__ with slice of Editops
"""
ops = module.Editops(
[
("delete", 1, 1),
("replace", 2, 1),
("insert", 6, 5),
("insert", 6, 6),
("insert", 6, 7),
],
7,
9,
)
ops_list = [
("delete", 1, 1),
("replace", 2, 1),
("insert", 6, 5),
("insert", 6, 6),
("insert", 6, 7),
]
assert ops[::].as_list() == ops_list[::]
assert ops[::] is not ops
assert ops[1:].as_list() == ops_list[1:]
assert ops[:3].as_list() == ops_list[:3]
assert ops[1:3].as_list() == ops_list[1:3]
assert ops[:-1].as_list() == ops_list[:-1]
assert ops[-3:].as_list() == ops_list[-3:]
assert ops[-3:-1].as_list() == ops_list[-3:-1]
with pytest.raises(ValueError, match="slice step cannot be zero"):
ops[::0]
with pytest.raises(ValueError, match="step sizes below 0 lead to an invalid order of editops"):
ops[::-1]
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_editops_del_slice(module):
"""
test __delitem__ with slice of Editops
"""
ops = module.Editops(
[
("delete", 1, 1),
("replace", 2, 1),
("insert", 6, 5),
("insert", 6, 6),
("insert", 6, 7),
],
7,
9,
)
ops_list = [
("delete", 1, 1),
("replace", 2, 1),
("insert", 6, 5),
("insert", 6, 6),
("insert", 6, 7),
]
def del_test(key):
_ops = ops[::]
_ops_list = ops_list[::]
del _ops[key]
del _ops_list[key]
assert _ops.as_list() == _ops_list
del_test(slice(None, 4, None))
del_test(slice(1, None, None))
del_test(slice(1, 4, None))
del_test(slice(None, 4, 2))
del_test(slice(1, None, 2))
del_test(slice(1, 4, 2))
del_test(slice(None, -1, None))
del_test(slice(-4, None, None))
del_test(slice(-4, -1, None))
del_test(slice(None, -1, 2))
del_test(slice(-4, None, 2))
del_test(slice(-4, -1, 2))
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_editops_inversion(module):
"""
test correct inversion of Editops
"""
ops = module.Editops(
[
("delete", 1, 1),
("replace", 2, 1),
("insert", 6, 5),
("insert", 6, 6),
("insert", 6, 7),
],
7,
9,
)
assert ops.inverse().as_list() == [
("insert", 1, 1),
("replace", 1, 2),
("delete", 5, 6),
("delete", 6, 6),
("delete", 7, 6),
]
def test_opcodes_comparison():
"""
test comparison with Opcodes
"""
ops = Levenshtein.opcodes("aaabaaa", "abbaaabba")
assert ops == ops
assert not (ops != ops) # noqa: SIM202
assert ops == ops.copy()
assert not (ops != ops.copy()) # noqa: SIM202
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_opcode_py_get_index(module):
"""
test __getitem__ with index of Opcodes
"""
ops = module.Opcodes(
[
("equal", 0, 1, 0, 1),
("delete", 1, 2, 1, 1),
("replace", 2, 3, 1, 2),
("equal", 3, 6, 2, 5),
("insert", 6, 6, 5, 8),
("equal", 6, 7, 8, 9),
],
7,
9,
)
ops_list = [
("equal", 0, 1, 0, 1),
("delete", 1, 2, 1, 1),
("replace", 2, 3, 1, 2),
("equal", 3, 6, 2, 5),
("insert", 6, 6, 5, 8),
("equal", 6, 7, 8, 9),
]
assert ops[0] == ops_list[0]
assert ops[1] == ops_list[1]
assert ops[2] == ops_list[2]
assert ops[3] == ops_list[3]
assert ops[4] == ops_list[4]
assert ops[5] == ops_list[5]
assert ops[-1] == ops_list[-1]
assert ops[-2] == ops_list[-2]
assert ops[-3] == ops_list[-3]
assert ops[-4] == ops_list[-4]
assert ops[-5] == ops_list[-5]
assert ops[-6] == ops_list[-6]
with pytest.raises(IndexError):
ops[6]
with pytest.raises(IndexError):
ops[-7]
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_opcode_inversion(module):
"""
test correct inversion of Opcodes
"""
ops = module.Opcodes(
[
("equal", 0, 1, 0, 1),
("delete", 1, 2, 1, 1),
("replace", 2, 3, 1, 2),
("equal", 3, 6, 2, 5),
("insert", 6, 6, 5, 8),
("equal", 6, 7, 8, 9),
],
7,
9,
)
assert ops.inverse().as_list() == [
("equal", 0, 1, 0, 1),
("insert", 1, 1, 1, 2),
("replace", 1, 2, 2, 3),
("equal", 2, 5, 3, 6),
("delete", 5, 8, 6, 6),
("equal", 8, 9, 6, 7),
]
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_opcodes_empty(module):
"""
test behavior of conversion between empty list and Editops
"""
ops = module.Opcodes([], 0, 0)
assert ops.as_list() == []
assert ops.src_len == 0
assert ops.dest_len == 0
ops = module.Opcodes([], 0, 3)
assert ops.as_list() == [module.Opcode(tag="equal", src_start=0, src_end=0, dest_start=0, dest_end=3)]
assert ops.src_len == 0
assert ops.dest_len == 3
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_editops_empty(module):
"""
test behavior of conversion between empty list and Opcodes
"""
ops = module.Editops([], 0, 0)
assert ops.as_list() == []
assert ops.src_len == 0
assert ops.dest_len == 0
ops = module.Editops([], 0, 3)
assert ops.as_list() == []
assert ops.src_len == 0
assert ops.dest_len == 3
def test_list_initialization():
"""
test whether list initialization works correctly
"""
ops = Levenshtein.opcodes("aaabaaa", "abbaaabba")
ops2 = Opcodes(ops.as_list(), ops.src_len, ops.dest_len)
assert ops == ops2
ops = Levenshtein.editops("aaabaaa", "abbaaabba")
ops2 = Editops(ops.as_list(), ops.src_len, ops.dest_len)
assert ops == ops2
ops = Levenshtein.opcodes("aaabaaa", "abbaaabba")
ops2 = Editops(ops.as_list(), ops.src_len, ops.dest_len)
assert ops.as_editops() == ops2
ops = Levenshtein.editops("aaabaaa", "abbaaabba")
ops2 = Opcodes(ops.as_list(), ops.src_len, ops.dest_len)
assert ops.as_opcodes() == ops2
ops = Levenshtein.editops("skdsakldsakdlasda", "djkajkdfkdgkhdfjrmecsidjf")
ops2 = Opcodes(ops.as_list(), ops.src_len, ops.dest_len)
assert ops.as_opcodes() == ops2
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_merge_adjacent_blocks(module):
"""
test whether adjacent blocks are merged
"""
ops1 = [module.Opcode(tag="equal", src_start=0, src_end=3, dest_start=0, dest_end=3)]
ops2 = [
module.Opcode(tag="equal", src_start=0, src_end=1, dest_start=0, dest_end=1),
module.Opcode(tag="equal", src_start=1, src_end=3, dest_start=1, dest_end=3),
]
assert module.Opcodes(ops1, 3, 3) == module.Opcodes(ops2, 3, 3)
assert module.Opcodes(ops2, 3, 3) == module.Opcodes(ops2, 3, 3).as_editops().as_opcodes()
@pytest.mark.parametrize("module", [distance_py, distance_cpp])
def test_empty_matching_blocks(module):
"""
test behavior for empty matching blocks
"""
assert module.Editops([], 0, 0).as_matching_blocks() == [module.MatchingBlock(a=0, b=0, size=0)]
assert module.Editops([], 0, 3).as_matching_blocks() == [module.MatchingBlock(a=0, b=3, size=0)]
assert module.Editops([], 3, 0).as_matching_blocks() == [module.MatchingBlock(a=3, b=0, size=0)]
assert module.Opcodes([], 0, 0).as_matching_blocks() == [module.MatchingBlock(a=0, b=0, size=0)]
assert module.Opcodes([], 0, 3).as_matching_blocks() == [module.MatchingBlock(a=0, b=3, size=0)]
assert module.Opcodes([], 3, 0).as_matching_blocks() == [module.MatchingBlock(a=3, b=0, size=0)]
@given(s1=st.text(), s2=st.text())
@settings(max_examples=100, deadline=None)
def test_editops_reversible(s1, s2):
"""
test whether conversions between editops and opcodes are reversible
"""
ops = Levenshtein.editops(s1, s2)
assert ops == ops.as_opcodes().as_editops()
while ops:
del ops[random.randrange(len(ops))]
assert Opcodes(ops.as_list(), ops.src_len, ops.dest_len) == ops.as_opcodes()
assert ops == ops.as_opcodes().as_editops()
|
