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"""
Unit tests for DateRange parameter.
"""
import datetime as dt
import re
import unittest
import param
import pytest
from .utils import check_defaults
try:
import numpy as np
except:
np = None
# Assuming tests of range parameter cover most of what's needed to
# test date range.
class TestDateRange(unittest.TestCase):
def _check_defaults(self, p):
assert p.default is None
assert p.allow_None is True
assert p.length == 2
assert p.bounds is None
assert p.softbounds is None
assert p.inclusive_bounds == (True, True)
assert p.step is None
def test_defaults_class(self):
class P(param.Parameterized):
r = param.DateRange()
check_defaults(P.param.r, label='R')
self._check_defaults(P.param.r)
def test_defaults_inst(self):
class P(param.Parameterized):
r = param.DateRange()
p = P()
check_defaults(p.param.r, label='R')
self._check_defaults(p.param.r)
def test_defaults_unbound(self):
r = param.DateRange()
check_defaults(r, label=None)
self._check_defaults(r)
bad_range = (dt.datetime(2017,2,27),dt.datetime(2017,2,26))
def test_wrong_type_default(self):
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'a' only takes a tuple value, not <class 'str'>.")
):
class Q(param.Parameterized):
a = param.DateRange(default='wrong')
def test_wrong_inner_type_default(self):
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'a' only takes date/datetime values, not <class 'float'>.")
):
class Q(param.Parameterized):
a = param.DateRange(default=(1.0,2.0))
def test_wrong_inner_type_init(self):
class Q(param.Parameterized):
a = param.DateRange()
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'Q.a' only takes date/datetime values, not <class 'float'>.")
):
Q(a=(1.0, 2.0))
def test_wrong_inner_type_set(self):
class Q(param.Parameterized):
a = param.DateRange()
q = Q()
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'Q.a' only takes date/datetime values, not <class 'float'>.")
):
q.a = (1.0, 2.0)
def test_wrong_type_init(self):
class Q(param.Parameterized):
a = param.DateRange()
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'Q.a' only takes a tuple value, not <class 'str'>.")
):
Q(a='wrong')
def test_wrong_type_set(self):
class Q(param.Parameterized):
a = param.DateRange()
q = Q()
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'Q.a' only takes a tuple value, not <class 'str'>.")
):
q.a = 'wrong'
def test_start_before_end_default(self):
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'a' end datetime 2017-02-26 00:00:00 is before start datetime 2017-02-27 00:00:00.")
):
class Q(param.Parameterized):
a = param.DateRange(default=self.bad_range)
def test_start_before_end_init(self):
class Q(param.Parameterized):
a = param.DateRange()
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'Q.a' end datetime 2017-02-26 00:00:00 is before start datetime 2017-02-27 00:00:00.")
):
Q(a=self.bad_range)
def test_start_before_end_set(self):
class Q(param.Parameterized):
a = param.DateRange()
q = Q()
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'Q.a' end datetime 2017-02-26 00:00:00 is before start datetime 2017-02-27 00:00:00.")
):
q.a = self.bad_range
def test_change_value_type(self):
class DateSlider(param.Parameterized):
date = param.DateRange(
default=(dt.date(2021, 1, 1), dt.date(2024, 1, 1)),
bounds=(dt.date(2020, 1, 1), dt.date(2025, 1, 1)),
)
ds = DateSlider()
# Change the value from date to datetime without erroring
ds.date = (dt.datetime(2022, 1, 1), dt.datetime(2023, 1, 1))
@pytest.mark.skipif(np is None, reason='NumPy is not available')
def test_support_mixed_date_datetime_bounds(self):
# No error when comparing date and Python and Numpy datetimes
date_bounds = (dt.date(2020, 1, 1), dt.date(2025, 1, 1))
datetime_bounds = (dt.datetime(2020, 1, 1), dt.datetime(2025, 1, 1))
numpy_bounds = (np.datetime64('2020-01-01T00:00'), np.datetime64('2025-01-01T00:00'))
date_val = (dt.date(2021, 1, 1), dt.date(2024, 1, 1))
datetime_val = (dt.datetime(2021, 1, 1), dt.datetime(2024, 1, 1))
numpy_val = (np.datetime64('2021-01-01T00:00'), np.datetime64('2024-01-01T00:00'))
class A(param.Parameterized):
s = param.DateRange(default=datetime_val, bounds=date_bounds)
t = param.DateRange(default=numpy_val, bounds=date_bounds)
u = param.DateRange(default=date_val, bounds=datetime_bounds)
v = param.DateRange(default=numpy_val, bounds=datetime_bounds)
w = param.DateRange(default=date_val, bounds=numpy_bounds)
x = param.DateRange(default=datetime_val, bounds=numpy_bounds)
a = A()
a.s = date_val
a.s = datetime_val
@pytest.mark.skipif(np is None, reason='NumPy is not available')
def test_numpy_default(self):
class Q(param.Parameterized):
a = param.DateRange(default=(np.datetime64('2022-01-01T00:00'), np.datetime64('2022-10-01T00:00')))
@pytest.mark.skipif(np is None, reason='NumPy is not available')
def test_numpy_set(self):
class Q(param.Parameterized):
a = param.DateRange()
q = Q()
q.a = (np.datetime64('2022-01-01T00:00'), np.datetime64('2022-10-01T00:00'))
@pytest.mark.skipif(np is None, reason='NumPy is not available')
def test_numpy_init(self):
class Q(param.Parameterized):
a = param.DateRange()
Q(a=(np.datetime64('2022-01-01T00:00'), np.datetime64('2022-10-01T00:00')))
@pytest.mark.skipif(np is None, reason='NumPy is not available')
def test_numpy_start_before_end_default(self):
with pytest.raises(
ValueError,
match=re.escape("DateRange parameter 'a' end datetime 2022-01-01T00:00 is before start datetime 2022-10-01T00:00.")
):
class Q(param.Parameterized):
a = param.DateRange(default=(np.datetime64('2022-10-01T00:00'), np.datetime64('2022-01-01T00:00')))
def test_validate_bounds_wrong_type_lower(self):
msg = re.escape("DateRange parameter lower bound can only be None or a date/datetime value, not <class 'str'>.")
with pytest.raises(ValueError, match=msg):
param.DateRange(bounds=('a', dt.datetime(2017,2,27)))
def test_validate_bounds_wrong_type_upper(self):
msg = re.escape("DateRange parameter upper bound can only be None or a date/datetime value, not <class 'str'>.")
with pytest.raises(ValueError, match=msg):
param.DateRange(bounds=(dt.datetime(2017,2,27), 'b'))
def test_validate_softbounds_wrong_type_lower(self):
msg = re.escape("DateRange parameter lower softbound can only be None or a date/datetime value, not <class 'str'>.")
with pytest.raises(ValueError, match=msg):
param.DateRange(softbounds=('a', dt.datetime(2017,2,27)))
def test_validate_softbounds_wrong_type_upper(self):
msg = re.escape("DateRange parameter upper softbound can only be None or a date/datetime value, not <class 'str'>.")
with pytest.raises(ValueError, match=msg):
param.DateRange(softbounds=(dt.datetime(2017,2,27), 'b'))
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