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import pytest
import xarray
from xarray import concat, merge
from xarray.backends.file_manager import FILE_CACHE
from xarray.core.options import OPTIONS, _get_keep_attrs
from xarray.tests.test_dataset import create_test_data
def test_invalid_option_raises():
with pytest.raises(ValueError):
xarray.set_options(not_a_valid_options=True)
def test_display_width():
with pytest.raises(ValueError):
xarray.set_options(display_width=0)
with pytest.raises(ValueError):
xarray.set_options(display_width=-10)
with pytest.raises(ValueError):
xarray.set_options(display_width=3.5)
def test_arithmetic_join():
with pytest.raises(ValueError):
xarray.set_options(arithmetic_join="invalid")
with xarray.set_options(arithmetic_join="exact"):
assert OPTIONS["arithmetic_join"] == "exact"
def test_enable_cftimeindex():
with pytest.raises(ValueError):
xarray.set_options(enable_cftimeindex=None)
with pytest.warns(FutureWarning, match="no-op"):
with xarray.set_options(enable_cftimeindex=True):
assert OPTIONS["enable_cftimeindex"]
def test_file_cache_maxsize():
with pytest.raises(ValueError):
xarray.set_options(file_cache_maxsize=0)
original_size = FILE_CACHE.maxsize
with xarray.set_options(file_cache_maxsize=123):
assert FILE_CACHE.maxsize == 123
assert FILE_CACHE.maxsize == original_size
def test_keep_attrs():
with pytest.raises(ValueError):
xarray.set_options(keep_attrs="invalid_str")
with xarray.set_options(keep_attrs=True):
assert OPTIONS["keep_attrs"]
with xarray.set_options(keep_attrs=False):
assert not OPTIONS["keep_attrs"]
with xarray.set_options(keep_attrs="default"):
assert _get_keep_attrs(default=True)
assert not _get_keep_attrs(default=False)
def test_nested_options():
original = OPTIONS["display_width"]
with xarray.set_options(display_width=1):
assert OPTIONS["display_width"] == 1
with xarray.set_options(display_width=2):
assert OPTIONS["display_width"] == 2
assert OPTIONS["display_width"] == 1
assert OPTIONS["display_width"] == original
def test_display_style():
original = "html"
assert OPTIONS["display_style"] == original
with pytest.raises(ValueError):
xarray.set_options(display_style="invalid_str")
with xarray.set_options(display_style="text"):
assert OPTIONS["display_style"] == "text"
assert OPTIONS["display_style"] == original
def create_test_dataset_attrs(seed=0):
ds = create_test_data(seed)
ds.attrs = {"attr1": 5, "attr2": "history", "attr3": {"nested": "more_info"}}
return ds
def create_test_dataarray_attrs(seed=0, var="var1"):
da = create_test_data(seed)[var]
da.attrs = {"attr1": 5, "attr2": "history", "attr3": {"nested": "more_info"}}
return da
class TestAttrRetention:
def test_dataset_attr_retention(self):
# Use .mean() for all tests: a typical reduction operation
ds = create_test_dataset_attrs()
original_attrs = ds.attrs
# Test default behaviour
result = ds.mean()
assert result.attrs == {}
with xarray.set_options(keep_attrs="default"):
result = ds.mean()
assert result.attrs == {}
with xarray.set_options(keep_attrs=True):
result = ds.mean()
assert result.attrs == original_attrs
with xarray.set_options(keep_attrs=False):
result = ds.mean()
assert result.attrs == {}
def test_dataarray_attr_retention(self):
# Use .mean() for all tests: a typical reduction operation
da = create_test_dataarray_attrs()
original_attrs = da.attrs
# Test default behaviour
result = da.mean()
assert result.attrs == {}
with xarray.set_options(keep_attrs="default"):
result = da.mean()
assert result.attrs == {}
with xarray.set_options(keep_attrs=True):
result = da.mean()
assert result.attrs == original_attrs
with xarray.set_options(keep_attrs=False):
result = da.mean()
assert result.attrs == {}
def test_groupby_attr_retention(self):
da = xarray.DataArray([1, 2, 3], [("x", [1, 1, 2])])
da.attrs = {"attr1": 5, "attr2": "history", "attr3": {"nested": "more_info"}}
original_attrs = da.attrs
# Test default behaviour
result = da.groupby("x").sum(keep_attrs=True)
assert result.attrs == original_attrs
with xarray.set_options(keep_attrs="default"):
result = da.groupby("x").sum(keep_attrs=True)
assert result.attrs == original_attrs
with xarray.set_options(keep_attrs=True):
result1 = da.groupby("x")
result = result1.sum()
assert result.attrs == original_attrs
with xarray.set_options(keep_attrs=False):
result = da.groupby("x").sum()
assert result.attrs == {}
def test_concat_attr_retention(self):
ds1 = create_test_dataset_attrs()
ds2 = create_test_dataset_attrs()
ds2.attrs = {"wrong": "attributes"}
original_attrs = ds1.attrs
# Test default behaviour of keeping the attrs of the first
# dataset in the supplied list
# global keep_attrs option current doesn't affect concat
result = concat([ds1, ds2], dim="dim1")
assert result.attrs == original_attrs
@pytest.mark.xfail
def test_merge_attr_retention(self):
da1 = create_test_dataarray_attrs(var="var1")
da2 = create_test_dataarray_attrs(var="var2")
da2.attrs = {"wrong": "attributes"}
original_attrs = da1.attrs
# merge currently discards attrs, and the global keep_attrs
# option doesn't affect this
result = merge([da1, da2])
assert result.attrs == original_attrs
def test_display_style_text(self):
ds = create_test_dataset_attrs()
with xarray.set_options(display_style="text"):
text = ds._repr_html_()
assert text.startswith("<pre>")
assert "'nested'" in text
assert "<xarray.Dataset>" in text
def test_display_style_html(self):
ds = create_test_dataset_attrs()
with xarray.set_options(display_style="html"):
html = ds._repr_html_()
assert html.startswith("<div>")
assert "'nested'" in html
def test_display_dataarray_style_text(self):
da = create_test_dataarray_attrs()
with xarray.set_options(display_style="text"):
text = da._repr_html_()
assert text.startswith("<pre>")
assert "<xarray.DataArray 'var1'" in text
def test_display_dataarray_style_html(self):
da = create_test_dataarray_attrs()
with xarray.set_options(display_style="html"):
html = da._repr_html_()
assert html.startswith("<div>")
assert "#x27;nested'" in html
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