You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
297 lines
8.0 KiB
297 lines
8.0 KiB
from __future__ import annotations
|
|
|
|
import os
|
|
|
|
import pytest
|
|
|
|
from pandas.compat._optional import VERSIONS
|
|
|
|
from pandas import (
|
|
read_csv,
|
|
read_table,
|
|
)
|
|
import pandas._testing as tm
|
|
|
|
|
|
class BaseParser:
|
|
engine: str | None = None
|
|
low_memory = True
|
|
float_precision_choices: list[str | None] = []
|
|
|
|
def update_kwargs(self, kwargs):
|
|
kwargs = kwargs.copy()
|
|
kwargs.update({"engine": self.engine, "low_memory": self.low_memory})
|
|
|
|
return kwargs
|
|
|
|
def read_csv(self, *args, **kwargs):
|
|
kwargs = self.update_kwargs(kwargs)
|
|
return read_csv(*args, **kwargs)
|
|
|
|
def read_csv_check_warnings(
|
|
self, warn_type: type[Warning], warn_msg: str, *args, **kwargs
|
|
):
|
|
# We need to check the stacklevel here instead of in the tests
|
|
# since this is where read_csv is called and where the warning
|
|
# should point to.
|
|
kwargs = self.update_kwargs(kwargs)
|
|
with tm.assert_produces_warning(warn_type, match=warn_msg):
|
|
return read_csv(*args, **kwargs)
|
|
|
|
def read_table(self, *args, **kwargs):
|
|
kwargs = self.update_kwargs(kwargs)
|
|
return read_table(*args, **kwargs)
|
|
|
|
def read_table_check_warnings(
|
|
self, warn_type: type[Warning], warn_msg: str, *args, **kwargs
|
|
):
|
|
# We need to check the stacklevel here instead of in the tests
|
|
# since this is where read_table is called and where the warning
|
|
# should point to.
|
|
kwargs = self.update_kwargs(kwargs)
|
|
with tm.assert_produces_warning(warn_type, match=warn_msg):
|
|
return read_table(*args, **kwargs)
|
|
|
|
|
|
class CParser(BaseParser):
|
|
engine = "c"
|
|
float_precision_choices = [None, "high", "round_trip"]
|
|
|
|
|
|
class CParserHighMemory(CParser):
|
|
low_memory = False
|
|
|
|
|
|
class CParserLowMemory(CParser):
|
|
low_memory = True
|
|
|
|
|
|
class PythonParser(BaseParser):
|
|
engine = "python"
|
|
float_precision_choices = [None]
|
|
|
|
|
|
class PyArrowParser(BaseParser):
|
|
engine = "pyarrow"
|
|
float_precision_choices = [None]
|
|
|
|
|
|
@pytest.fixture
|
|
def csv_dir_path(datapath):
|
|
"""
|
|
The directory path to the data files needed for parser tests.
|
|
"""
|
|
return datapath("io", "parser", "data")
|
|
|
|
|
|
@pytest.fixture
|
|
def csv1(datapath):
|
|
"""
|
|
The path to the data file "test1.csv" needed for parser tests.
|
|
"""
|
|
return os.path.join(datapath("io", "data", "csv"), "test1.csv")
|
|
|
|
|
|
_cParserHighMemory = CParserHighMemory
|
|
_cParserLowMemory = CParserLowMemory
|
|
_pythonParser = PythonParser
|
|
_pyarrowParser = PyArrowParser
|
|
|
|
_py_parsers_only = [_pythonParser]
|
|
_c_parsers_only = [_cParserHighMemory, _cParserLowMemory]
|
|
_pyarrow_parsers_only = [pytest.param(_pyarrowParser, marks=pytest.mark.single_cpu)]
|
|
|
|
_all_parsers = [*_c_parsers_only, *_py_parsers_only, *_pyarrow_parsers_only]
|
|
|
|
_py_parser_ids = ["python"]
|
|
_c_parser_ids = ["c_high", "c_low"]
|
|
_pyarrow_parsers_ids = ["pyarrow"]
|
|
|
|
_all_parser_ids = [*_c_parser_ids, *_py_parser_ids, *_pyarrow_parsers_ids]
|
|
|
|
|
|
@pytest.fixture(params=_all_parsers, ids=_all_parser_ids)
|
|
def all_parsers(request):
|
|
"""
|
|
Fixture all of the CSV parsers.
|
|
"""
|
|
parser = request.param()
|
|
if parser.engine == "pyarrow":
|
|
pytest.importorskip("pyarrow", VERSIONS["pyarrow"])
|
|
# Try finding a way to disable threads all together
|
|
# for more stable CI runs
|
|
import pyarrow
|
|
|
|
pyarrow.set_cpu_count(1)
|
|
return parser
|
|
|
|
|
|
@pytest.fixture(params=_c_parsers_only, ids=_c_parser_ids)
|
|
def c_parser_only(request):
|
|
"""
|
|
Fixture all of the CSV parsers using the C engine.
|
|
"""
|
|
return request.param()
|
|
|
|
|
|
@pytest.fixture(params=_py_parsers_only, ids=_py_parser_ids)
|
|
def python_parser_only(request):
|
|
"""
|
|
Fixture all of the CSV parsers using the Python engine.
|
|
"""
|
|
return request.param()
|
|
|
|
|
|
@pytest.fixture(params=_pyarrow_parsers_only, ids=_pyarrow_parsers_ids)
|
|
def pyarrow_parser_only(request):
|
|
"""
|
|
Fixture all of the CSV parsers using the Pyarrow engine.
|
|
"""
|
|
return request.param()
|
|
|
|
|
|
def _get_all_parser_float_precision_combinations():
|
|
"""
|
|
Return all allowable parser and float precision
|
|
combinations and corresponding ids.
|
|
"""
|
|
params = []
|
|
ids = []
|
|
for parser, parser_id in zip(_all_parsers, _all_parser_ids):
|
|
if hasattr(parser, "values"):
|
|
# Wrapped in pytest.param, get the actual parser back
|
|
parser = parser.values[0]
|
|
for precision in parser.float_precision_choices:
|
|
# Re-wrap in pytest.param for pyarrow
|
|
mark = pytest.mark.single_cpu if parser.engine == "pyarrow" else ()
|
|
param = pytest.param((parser(), precision), marks=mark)
|
|
params.append(param)
|
|
ids.append(f"{parser_id}-{precision}")
|
|
|
|
return {"params": params, "ids": ids}
|
|
|
|
|
|
@pytest.fixture(
|
|
params=_get_all_parser_float_precision_combinations()["params"],
|
|
ids=_get_all_parser_float_precision_combinations()["ids"],
|
|
)
|
|
def all_parsers_all_precisions(request):
|
|
"""
|
|
Fixture for all allowable combinations of parser
|
|
and float precision
|
|
"""
|
|
return request.param
|
|
|
|
|
|
_utf_values = [8, 16, 32]
|
|
|
|
_encoding_seps = ["", "-", "_"]
|
|
_encoding_prefixes = ["utf", "UTF"]
|
|
|
|
_encoding_fmts = [
|
|
f"{prefix}{sep}{{0}}" for sep in _encoding_seps for prefix in _encoding_prefixes
|
|
]
|
|
|
|
|
|
@pytest.fixture(params=_utf_values)
|
|
def utf_value(request):
|
|
"""
|
|
Fixture for all possible integer values for a UTF encoding.
|
|
"""
|
|
return request.param
|
|
|
|
|
|
@pytest.fixture(params=_encoding_fmts)
|
|
def encoding_fmt(request):
|
|
"""
|
|
Fixture for all possible string formats of a UTF encoding.
|
|
"""
|
|
return request.param
|
|
|
|
|
|
@pytest.fixture(
|
|
params=[
|
|
("-1,0", -1.0),
|
|
("-1,2e0", -1.2),
|
|
("-1e0", -1.0),
|
|
("+1e0", 1.0),
|
|
("+1e+0", 1.0),
|
|
("+1e-1", 0.1),
|
|
("+,1e1", 1.0),
|
|
("+1,e0", 1.0),
|
|
("-,1e1", -1.0),
|
|
("-1,e0", -1.0),
|
|
("0,1", 0.1),
|
|
("1,", 1.0),
|
|
(",1", 0.1),
|
|
("-,1", -0.1),
|
|
("1_,", 1.0),
|
|
("1_234,56", 1234.56),
|
|
("1_234,56e0", 1234.56),
|
|
# negative cases; must not parse as float
|
|
("_", "_"),
|
|
("-_", "-_"),
|
|
("-_1", "-_1"),
|
|
("-_1e0", "-_1e0"),
|
|
("_1", "_1"),
|
|
("_1,", "_1,"),
|
|
("_1,_", "_1,_"),
|
|
("_1e0", "_1e0"),
|
|
("1,2e_1", "1,2e_1"),
|
|
("1,2e1_0", "1,2e1_0"),
|
|
("1,_2", "1,_2"),
|
|
(",1__2", ",1__2"),
|
|
(",1e", ",1e"),
|
|
("-,1e", "-,1e"),
|
|
("1_000,000_000", "1_000,000_000"),
|
|
("1,e1_2", "1,e1_2"),
|
|
("e11,2", "e11,2"),
|
|
("1e11,2", "1e11,2"),
|
|
("1,2,2", "1,2,2"),
|
|
("1,2_1", "1,2_1"),
|
|
("1,2e-10e1", "1,2e-10e1"),
|
|
("--1,2", "--1,2"),
|
|
("1a_2,1", "1a_2,1"),
|
|
("1,2E-1", 0.12),
|
|
("1,2E1", 12.0),
|
|
]
|
|
)
|
|
def numeric_decimal(request):
|
|
"""
|
|
Fixture for all numeric formats which should get recognized. The first entry
|
|
represents the value to read while the second represents the expected result.
|
|
"""
|
|
return request.param
|
|
|
|
|
|
@pytest.fixture
|
|
def pyarrow_xfail(request):
|
|
"""
|
|
Fixture that xfails a test if the engine is pyarrow.
|
|
"""
|
|
if "all_parsers" in request.fixturenames:
|
|
parser = request.getfixturevalue("all_parsers")
|
|
elif "all_parsers_all_precisions" in request.fixturenames:
|
|
# Return value is tuple of (engine, precision)
|
|
parser = request.getfixturevalue("all_parsers_all_precisions")[0]
|
|
else:
|
|
return
|
|
if parser.engine == "pyarrow":
|
|
mark = pytest.mark.xfail(reason="pyarrow doesn't support this.")
|
|
request.node.add_marker(mark)
|
|
|
|
|
|
@pytest.fixture
|
|
def pyarrow_skip(request):
|
|
"""
|
|
Fixture that skips a test if the engine is pyarrow.
|
|
"""
|
|
if "all_parsers" in request.fixturenames:
|
|
parser = request.getfixturevalue("all_parsers")
|
|
elif "all_parsers_all_precisions" in request.fixturenames:
|
|
# Return value is tuple of (engine, precision)
|
|
parser = request.getfixturevalue("all_parsers_all_precisions")[0]
|
|
else:
|
|
return
|
|
if parser.engine == "pyarrow":
|
|
pytest.skip("pyarrow doesn't support this.")
|
|
|