aoc-2022/venv/Lib/site-packages/pandas/tests/config/test_config.py

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import warnings
import pytest
from pandas._config import config as cf
from pandas._config.config import OptionError
import pandas as pd
class TestConfig:
@classmethod
def setup_class(cls):
from copy import deepcopy
cls.cf = cf
cls.gc = deepcopy(getattr(cls.cf, "_global_config"))
cls.do = deepcopy(getattr(cls.cf, "_deprecated_options"))
cls.ro = deepcopy(getattr(cls.cf, "_registered_options"))
def setup_method(self):
setattr(self.cf, "_global_config", {})
setattr(self.cf, "options", self.cf.DictWrapper(self.cf._global_config))
setattr(self.cf, "_deprecated_options", {})
setattr(self.cf, "_registered_options", {})
# Our test fixture in conftest.py sets "chained_assignment"
# to "raise" only after all test methods have been setup.
# However, after this setup, there is no longer any
# "chained_assignment" option, so re-register it.
self.cf.register_option("chained_assignment", "raise")
def teardown_method(self):
setattr(self.cf, "_global_config", self.gc)
setattr(self.cf, "_deprecated_options", self.do)
setattr(self.cf, "_registered_options", self.ro)
def test_api(self):
# the pandas object exposes the user API
assert hasattr(pd, "get_option")
assert hasattr(pd, "set_option")
assert hasattr(pd, "reset_option")
assert hasattr(pd, "describe_option")
def test_is_one_of_factory(self):
v = self.cf.is_one_of_factory([None, 12])
v(12)
v(None)
msg = r"Value must be one of None\|12"
with pytest.raises(ValueError, match=msg):
v(1.1)
def test_register_option(self):
self.cf.register_option("a", 1, "doc")
# can't register an already registered option
msg = "Option 'a' has already been registered"
with pytest.raises(OptionError, match=msg):
self.cf.register_option("a", 1, "doc")
# can't register an already registered option
msg = "Path prefix to option 'a' is already an option"
with pytest.raises(OptionError, match=msg):
self.cf.register_option("a.b.c.d1", 1, "doc")
with pytest.raises(OptionError, match=msg):
self.cf.register_option("a.b.c.d2", 1, "doc")
# no python keywords
msg = "for is a python keyword"
with pytest.raises(ValueError, match=msg):
self.cf.register_option("for", 0)
with pytest.raises(ValueError, match=msg):
self.cf.register_option("a.for.b", 0)
# must be valid identifier (ensure attribute access works)
msg = "oh my goddess! is not a valid identifier"
with pytest.raises(ValueError, match=msg):
self.cf.register_option("Oh my Goddess!", 0)
# we can register options several levels deep
# without predefining the intermediate steps
# and we can define differently named options
# in the same namespace
self.cf.register_option("k.b.c.d1", 1, "doc")
self.cf.register_option("k.b.c.d2", 1, "doc")
def test_describe_option(self):
self.cf.register_option("a", 1, "doc")
self.cf.register_option("b", 1, "doc2")
self.cf.deprecate_option("b")
self.cf.register_option("c.d.e1", 1, "doc3")
self.cf.register_option("c.d.e2", 1, "doc4")
self.cf.register_option("f", 1)
self.cf.register_option("g.h", 1)
self.cf.register_option("k", 2)
self.cf.deprecate_option("g.h", rkey="k")
self.cf.register_option("l", "foo")
# non-existent keys raise KeyError
msg = r"No such keys\(s\)"
with pytest.raises(OptionError, match=msg):
self.cf.describe_option("no.such.key")
# we can get the description for any key we registered
assert "doc" in self.cf.describe_option("a", _print_desc=False)
assert "doc2" in self.cf.describe_option("b", _print_desc=False)
assert "precated" in self.cf.describe_option("b", _print_desc=False)
assert "doc3" in self.cf.describe_option("c.d.e1", _print_desc=False)
assert "doc4" in self.cf.describe_option("c.d.e2", _print_desc=False)
# if no doc is specified we get a default message
# saying "description not available"
assert "available" in self.cf.describe_option("f", _print_desc=False)
assert "available" in self.cf.describe_option("g.h", _print_desc=False)
assert "precated" in self.cf.describe_option("g.h", _print_desc=False)
assert "k" in self.cf.describe_option("g.h", _print_desc=False)
# default is reported
assert "foo" in self.cf.describe_option("l", _print_desc=False)
# current value is reported
assert "bar" not in self.cf.describe_option("l", _print_desc=False)
self.cf.set_option("l", "bar")
assert "bar" in self.cf.describe_option("l", _print_desc=False)
def test_case_insensitive(self):
self.cf.register_option("KanBAN", 1, "doc")
assert "doc" in self.cf.describe_option("kanbaN", _print_desc=False)
assert self.cf.get_option("kanBaN") == 1
self.cf.set_option("KanBan", 2)
assert self.cf.get_option("kAnBaN") == 2
# gets of non-existent keys fail
msg = r"No such keys\(s\): 'no_such_option'"
with pytest.raises(OptionError, match=msg):
self.cf.get_option("no_such_option")
self.cf.deprecate_option("KanBan")
assert self.cf._is_deprecated("kAnBaN")
def test_get_option(self):
self.cf.register_option("a", 1, "doc")
self.cf.register_option("b.c", "hullo", "doc2")
self.cf.register_option("b.b", None, "doc2")
# gets of existing keys succeed
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b.c") == "hullo"
assert self.cf.get_option("b.b") is None
# gets of non-existent keys fail
msg = r"No such keys\(s\): 'no_such_option'"
with pytest.raises(OptionError, match=msg):
self.cf.get_option("no_such_option")
def test_set_option(self):
self.cf.register_option("a", 1, "doc")
self.cf.register_option("b.c", "hullo", "doc2")
self.cf.register_option("b.b", None, "doc2")
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b.c") == "hullo"
assert self.cf.get_option("b.b") is None
self.cf.set_option("a", 2)
self.cf.set_option("b.c", "wurld")
self.cf.set_option("b.b", 1.1)
assert self.cf.get_option("a") == 2
assert self.cf.get_option("b.c") == "wurld"
assert self.cf.get_option("b.b") == 1.1
msg = r"No such keys\(s\): 'no.such.key'"
with pytest.raises(OptionError, match=msg):
self.cf.set_option("no.such.key", None)
def test_set_option_empty_args(self):
msg = "Must provide an even number of non-keyword arguments"
with pytest.raises(ValueError, match=msg):
self.cf.set_option()
def test_set_option_uneven_args(self):
msg = "Must provide an even number of non-keyword arguments"
with pytest.raises(ValueError, match=msg):
self.cf.set_option("a.b", 2, "b.c")
def test_set_option_invalid_single_argument_type(self):
msg = "Must provide an even number of non-keyword arguments"
with pytest.raises(ValueError, match=msg):
self.cf.set_option(2)
def test_set_option_multiple(self):
self.cf.register_option("a", 1, "doc")
self.cf.register_option("b.c", "hullo", "doc2")
self.cf.register_option("b.b", None, "doc2")
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b.c") == "hullo"
assert self.cf.get_option("b.b") is None
self.cf.set_option("a", "2", "b.c", None, "b.b", 10.0)
assert self.cf.get_option("a") == "2"
assert self.cf.get_option("b.c") is None
assert self.cf.get_option("b.b") == 10.0
def test_validation(self):
self.cf.register_option("a", 1, "doc", validator=self.cf.is_int)
self.cf.register_option("d", 1, "doc", validator=self.cf.is_nonnegative_int)
self.cf.register_option("b.c", "hullo", "doc2", validator=self.cf.is_text)
msg = "Value must have type '<class 'int'>'"
with pytest.raises(ValueError, match=msg):
self.cf.register_option("a.b.c.d2", "NO", "doc", validator=self.cf.is_int)
self.cf.set_option("a", 2) # int is_int
self.cf.set_option("b.c", "wurld") # str is_str
self.cf.set_option("d", 2)
self.cf.set_option("d", None) # non-negative int can be None
# None not is_int
with pytest.raises(ValueError, match=msg):
self.cf.set_option("a", None)
with pytest.raises(ValueError, match=msg):
self.cf.set_option("a", "ab")
msg = "Value must be a nonnegative integer or None"
with pytest.raises(ValueError, match=msg):
self.cf.register_option(
"a.b.c.d3", "NO", "doc", validator=self.cf.is_nonnegative_int
)
with pytest.raises(ValueError, match=msg):
self.cf.register_option(
"a.b.c.d3", -2, "doc", validator=self.cf.is_nonnegative_int
)
msg = r"Value must be an instance of <class 'str'>\|<class 'bytes'>"
with pytest.raises(ValueError, match=msg):
self.cf.set_option("b.c", 1)
validator = self.cf.is_one_of_factory([None, self.cf.is_callable])
self.cf.register_option("b", lambda: None, "doc", validator=validator)
self.cf.set_option("b", "%.1f".format) # Formatter is callable
self.cf.set_option("b", None) # Formatter is none (default)
with pytest.raises(ValueError, match="Value must be a callable"):
self.cf.set_option("b", "%.1f")
def test_reset_option(self):
self.cf.register_option("a", 1, "doc", validator=self.cf.is_int)
self.cf.register_option("b.c", "hullo", "doc2", validator=self.cf.is_str)
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b.c") == "hullo"
self.cf.set_option("a", 2)
self.cf.set_option("b.c", "wurld")
assert self.cf.get_option("a") == 2
assert self.cf.get_option("b.c") == "wurld"
self.cf.reset_option("a")
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b.c") == "wurld"
self.cf.reset_option("b.c")
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b.c") == "hullo"
def test_reset_option_all(self):
self.cf.register_option("a", 1, "doc", validator=self.cf.is_int)
self.cf.register_option("b.c", "hullo", "doc2", validator=self.cf.is_str)
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b.c") == "hullo"
self.cf.set_option("a", 2)
self.cf.set_option("b.c", "wurld")
assert self.cf.get_option("a") == 2
assert self.cf.get_option("b.c") == "wurld"
self.cf.reset_option("all")
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b.c") == "hullo"
def test_deprecate_option(self):
# we can deprecate non-existent options
self.cf.deprecate_option("foo")
assert self.cf._is_deprecated("foo")
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
with pytest.raises(KeyError, match="No such keys.s.: 'foo'"):
self.cf.get_option("foo")
assert len(w) == 1 # should have raised one warning
assert "deprecated" in str(w[-1]) # we get the default message
self.cf.register_option("a", 1, "doc", validator=self.cf.is_int)
self.cf.register_option("b.c", "hullo", "doc2")
self.cf.register_option("foo", "hullo", "doc2")
self.cf.deprecate_option("a", removal_ver="nifty_ver")
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
self.cf.get_option("a")
assert len(w) == 1 # should have raised one warning
assert "eprecated" in str(w[-1]) # we get the default message
assert "nifty_ver" in str(w[-1]) # with the removal_ver quoted
msg = "Option 'a' has already been defined as deprecated"
with pytest.raises(OptionError, match=msg):
self.cf.deprecate_option("a")
self.cf.deprecate_option("b.c", "zounds!")
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
self.cf.get_option("b.c")
assert len(w) == 1 # should have raised one warning
assert "zounds!" in str(w[-1]) # we get the custom message
# test rerouting keys
self.cf.register_option("d.a", "foo", "doc2")
self.cf.register_option("d.dep", "bar", "doc2")
assert self.cf.get_option("d.a") == "foo"
assert self.cf.get_option("d.dep") == "bar"
self.cf.deprecate_option("d.dep", rkey="d.a") # reroute d.dep to d.a
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
assert self.cf.get_option("d.dep") == "foo"
assert len(w) == 1 # should have raised one warning
assert "eprecated" in str(w[-1]) # we get the custom message
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
self.cf.set_option("d.dep", "baz") # should overwrite "d.a"
assert len(w) == 1 # should have raised one warning
assert "eprecated" in str(w[-1]) # we get the custom message
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
assert self.cf.get_option("d.dep") == "baz"
assert len(w) == 1 # should have raised one warning
assert "eprecated" in str(w[-1]) # we get the custom message
def test_config_prefix(self):
with self.cf.config_prefix("base"):
self.cf.register_option("a", 1, "doc1")
self.cf.register_option("b", 2, "doc2")
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b") == 2
self.cf.set_option("a", 3)
self.cf.set_option("b", 4)
assert self.cf.get_option("a") == 3
assert self.cf.get_option("b") == 4
assert self.cf.get_option("base.a") == 3
assert self.cf.get_option("base.b") == 4
assert "doc1" in self.cf.describe_option("base.a", _print_desc=False)
assert "doc2" in self.cf.describe_option("base.b", _print_desc=False)
self.cf.reset_option("base.a")
self.cf.reset_option("base.b")
with self.cf.config_prefix("base"):
assert self.cf.get_option("a") == 1
assert self.cf.get_option("b") == 2
def test_callback(self):
k = [None]
v = [None]
def callback(key):
k.append(key)
v.append(self.cf.get_option(key))
self.cf.register_option("d.a", "foo", cb=callback)
self.cf.register_option("d.b", "foo", cb=callback)
del k[-1], v[-1]
self.cf.set_option("d.a", "fooz")
assert k[-1] == "d.a"
assert v[-1] == "fooz"
del k[-1], v[-1]
self.cf.set_option("d.b", "boo")
assert k[-1] == "d.b"
assert v[-1] == "boo"
del k[-1], v[-1]
self.cf.reset_option("d.b")
assert k[-1] == "d.b"
def test_set_ContextManager(self):
def eq(val):
assert self.cf.get_option("a") == val
self.cf.register_option("a", 0)
eq(0)
with self.cf.option_context("a", 15):
eq(15)
with self.cf.option_context("a", 25):
eq(25)
eq(15)
eq(0)
self.cf.set_option("a", 17)
eq(17)
# Test that option_context can be used as a decorator too (#34253).
@self.cf.option_context("a", 123)
def f():
eq(123)
f()
def test_attribute_access(self):
holder = []
def f3(key):
holder.append(True)
self.cf.register_option("a", 0)
self.cf.register_option("c", 0, cb=f3)
options = self.cf.options
assert options.a == 0
with self.cf.option_context("a", 15):
assert options.a == 15
options.a = 500
assert self.cf.get_option("a") == 500
self.cf.reset_option("a")
assert options.a == self.cf.get_option("a", 0)
msg = "You can only set the value of existing options"
with pytest.raises(OptionError, match=msg):
options.b = 1
with pytest.raises(OptionError, match=msg):
options.display = 1
# make sure callback kicks when using this form of setting
options.c = 1
assert len(holder) == 1
def test_option_context_scope(self):
# Ensure that creating a context does not affect the existing
# environment as it is supposed to be used with the `with` statement.
# See https://github.com/pandas-dev/pandas/issues/8514
original_value = 60
context_value = 10
option_name = "a"
self.cf.register_option(option_name, original_value)
# Ensure creating contexts didn't affect the current context.
ctx = self.cf.option_context(option_name, context_value)
assert self.cf.get_option(option_name) == original_value
# Ensure the correct value is available inside the context.
with ctx:
assert self.cf.get_option(option_name) == context_value
# Ensure the current context is reset
assert self.cf.get_option(option_name) == original_value
def test_dictwrapper_getattr(self):
options = self.cf.options
# GH 19789
with pytest.raises(OptionError, match="No such option"):
options.bananas
assert not hasattr(options, "bananas")