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