def test_CGI_detector_position():
""" Test existence of the CGI detector position etc, and that you can't set it."""
cgi = wfirst.CGI()
valid_pos = (512, 512)
assert cgi.detector_position == valid_pos, "CGI detector position isn't as expected"
with pytest.raises(RuntimeError) as excinfo:
cgi.detector_position = valid_pos
assert 'not adjustable' in str(excinfo.value), ("Failed to raise exception for"\
"trying to change CGI detector position.")
def test_CGI_psf(display=False):
"""
Just test that instantiating CGI works and can compute a PSF without raising
any exceptions
"""
char_spc = wfirst.CGI()
char_spc.mode = 'CHARSPC_F660'
#print('Reading instrument data from {:s}'.format(charspc._WebbPSF_basepath)
#print('Filter list: {:}'.format(charspc.filter_list))
monopsf = char_spc.calcPSF(nlambda=1, display=False)
if display:
wfirst.poppy.display_PSF(monopsf)
