def test_known_values():
"""Run a few tests with known answers to ensure
calculate_G_on_W_m2() is giving the expected output.
These known values are estimated from Duffie & Beckman (2006) Figure 1.4.1.
"""
assert calculate_G_on_W_m2(B_degrees=calculate_B_degrees(1),
G_sc=1_367) == pytest.approx(1_414.9134)
assert calculate_G_on_W_m2(B_degrees=calculate_B_degrees(180),
G_sc=1_367) == pytest.approx(1_321.5236)
def test_invalid_range():
"""Test to ensure a ValueError is raised when a value
outside the specified range is provided to
calculate_B_degrees()."""
with pytest.raises(ValueError):
# Test with too-low value
assert calculate_B_degrees(day_number=-10)
with pytest.raises(ValueError):
# Test with too-high value
assert calculate_B_degrees(day_number=1_000)
def test_known_values():
"""Run a few tests with known answers to ensure
calculate_E_min() is giving the expected output.
These known values are taken from:
1) Duffie & Beckman (2006) Example 1.5.1, and
2) Estimated from Duffie & Beckman (2006) Figure 1.5.1
"""
assert calculate_E_min(
B_degrees=calculate_B_degrees(day_number=34)
) == pytest.approx(-13.488457)
assert calculate_E_min(
B_degrees=calculate_B_degrees(day_number=304)
) == pytest.approx(16.37505)
def test_known_values():
"""Run a few tests with known answers to ensure
calculate_declination_degrees() is giving the expected output.
These known values are taken from Duffie & Beckman (2006)
Table 1.6.1.
"""
assert calculate_declination_degrees(
B_degrees=calculate_B_degrees(day_number=17)
) == pytest.approx(-20.903603)
assert calculate_declination_degrees(
B_degrees=calculate_B_degrees(day_number=105)
) == pytest.approx(9.480771)
assert calculate_declination_degrees(
B_degrees=calculate_B_degrees(day_number=288)
) == pytest.approx(-8.217747)
def test_invalid_type():
"""Test to ensure a TypeError or ValueError is raised
when an invalid value is provided to calculate_B_degrees()."""
with pytest.raises(TypeError):
# Test with float value
assert calculate_B_degrees(day_number=123.5)
with pytest.raises(ValueError):
# Test with NaN value
assert calculate_B_degrees(day_number=nan)
with pytest.raises(ValueError):
# Test with infinite value
assert calculate_B_degrees(day_number=inf)
with pytest.raises(TypeError):
# Test with string value
assert calculate_B_degrees(day_number="blah")
with pytest.raises(TypeError):
# Test with datetime object
assert calculate_B_degrees(day_number=datetime(2020, 1, 1))
import numpy as np
import pytest
from hypothesis import given
from hypothesis.strategies import floats
from pysoleng.solar_geom import (
calculate_B_degrees,
calculate_declination_degrees,
)
@pytest.mark.solar_geom
@given(
floats(
min_value=calculate_B_degrees(1),
max_value=calculate_B_degrees(366),
allow_nan=False,
allow_infinity=False,
exclude_min=True,
exclude_max=True,
)
)
def test_calculate_declination_degrees(B):
"""Functional test to ensure the calculate_declination_degrees() method
runs properly given a valid argument."""
assert isinstance(calculate_declination_degrees(B_degrees=B), float)
@pytest.mark.solar_geom
def test_calculate_declination_degrees_iterable():
def test_known_values():
"""Run a few tests with known answers to ensure
calculate_B_degrees() is giving the expected output."""
assert calculate_B_degrees(day_number=1) == 0
assert calculate_B_degrees(day_number=74) == 72
assert calculate_B_degrees(day_number=366) == 360
def test_calculate_B_degrees_iterable():
"""Functional test to ensure the calculate_B_degrees() method
runs properly on integer iterables in the correct range."""
assert isinstance(calculate_B_degrees(day_number=[1, 10, 20]), np.ndarray)
def test_calculate_B_degrees(value):
"""Functional test to ensure the calculate_B_degrees() method
runs properly on integer values in the correct range."""
assert isinstance(calculate_B_degrees(day_number=value), float)