def test_Image_et_fraction_elr_param(lst, dt, elev, tcorr, tmax, elr_flag,
expected, tol=0.0001):
"""Test that elr_flag works and changes ETf values"""
output_img = model.et_fraction(
lst=ee.Image.constant(lst), tmax=ee.Image.constant(tmax),
tcorr=tcorr, dt=dt, elr_flag=elr_flag, elev=elev)
output = utils.constant_image_value(ee.Image(output_img))
assert abs(output['et_fraction'] - expected) <= tol
def test_Image_et_fraction_clamp_nodata(lst, dt, tcorr, tmax, expected):
"""Test that ETf is set to nodata for ETf > 1.3"""
output_img = model.et_fraction(lst=ee.Image.constant(lst),
tmax=ee.Image.constant(tmax),
tcorr=tcorr,
dt=dt)
output = utils.constant_image_value(ee.Image(output_img))
assert output['et_fraction'] is None and expected is None
def test_Model_et_fraction_clamp_nodata(lst, dt, tcorr, tmax, expected):
"""Test that ETf is set to nodata for ETf > 2.0"""
output_img = model.et_fraction(lst=ee.Image.constant(lst),
tmax=ee.Image.constant(tmax),
tcorr=tcorr,
dt=dt)
output = utils.constant_image_value(ee.Image(output_img))
if expected is None:
assert output['et_fraction'] is None
else:
assert abs(output['et_fraction'] - expected) <= 0.000001
def test_Model_et_fraction_values(lst,
ndvi,
dt,
tcorr,
tmax,
expected,
tol=0.0001):
output = utils.constant_image_value(
model.et_fraction(lst=ee.Image.constant(lst),
tmax=ee.Image.constant(tmax),
tcorr=tcorr,
dt=dt))
assert abs(output['et_fraction'] - expected) <= tol
