def test_QuestPlusHandler():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
expected_contrasts = [
-18, -22, -25, -28, -30, -22, -13, -15, -16, -18, -19, -20, -21, -22,
-23, -19, -20, -20, -18, -18, -19, -17, -17, -18, -18, -18, -19, -19,
-19, -19, -19, -19
]
responses = [
'Correct', 'Correct', 'Correct', 'Correct', 'Incorrect', 'Incorrect',
'Correct', 'Correct', 'Correct', 'Correct', 'Correct', 'Correct',
'Correct', 'Correct', 'Incorrect', 'Correct', 'Correct', 'Incorrect',
'Correct', 'Correct', 'Incorrect', 'Correct', 'Correct', 'Correct',
'Correct', 'Correct', 'Correct', 'Correct', 'Correct', 'Correct',
'Correct', 'Correct'
]
expected_mode_threshold = -20
scale = 'dB'
stim_selection_method = 'minEntropy'
param_estimation_method = 'mode'
func = 'weibull'
response_vals = ['Correct', 'Incorrect']
q = QuestPlusHandler(nTrials=len(expected_contrasts),
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
responseVals=response_vals,
psychometricFunc=func,
stimSelectionMethod=stim_selection_method,
stimScale=scale,
paramEstimationMethod=param_estimation_method)
for trial_index, next_contrast in enumerate(q):
assert next_contrast == expected_contrasts[trial_index]
q.addResponse(response=responses[trial_index])
assert np.allclose(q.paramEstimate['threshold'], expected_mode_threshold)
def test_QuesPlusHandler_prior():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
threshold_prior_vals = np.random.randint(low=1,
high=10,
size=len(thresholds))
threshold_prior_vals = threshold_prior_vals / threshold_prior_vals.sum()
prior = dict(threshold=threshold_prior_vals)
q = QuestPlusHandler(nTrials=20,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
prior=prior)
assert np.allclose(q._qp.prior.squeeze().values, threshold_prior_vals)
# Even though we only specified a prior for threshold, all parameters
# should be present (auto-populated) in q.prior.
assert all([
k in q.prior
for k in ('threshold', 'slope', 'lowerAsymptote', 'lapseRate')
])
def test_QuestPlusHandler_posterior_weibull():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
response_vals = ['Correct', 'Incorrect']
func = 'weibull'
q = QuestPlusHandler(nTrials=20,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
responseVals=response_vals,
psychometricFunc=func)
assert 'threshold' in q.posterior.keys()
assert 'slope' in q.posterior.keys()
assert 'lowerAsymptote' in q.posterior.keys()
assert 'lapseRate' in q.posterior.keys()
def test_QuestPlusHandler_startIntensity():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
response_vals = ['Correct', 'Incorrect']
start_intensity = contrasts[10]
scale = 'dB'
stim_selection_method = 'minEntropy'
param_estimation_method = 'mode'
func = 'weibull'
q = QuestPlusHandler(nTrials=10,
startIntensity=start_intensity,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
responseVals=response_vals,
psychometricFunc=func,
stimSelectionMethod=stim_selection_method,
stimScale=scale,
paramEstimationMethod=param_estimation_method)
assert q.startIntensity == start_intensity
assert q._nextIntensity == start_intensity
def test_QuesPlusHandler_stimSelectionOptions():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
response_vals = ['Correct', 'Incorrect']
func = 'weibull'
stim_scale = 'linear'
stim_selection_method = 'minNEntropy'
stim_selection_options = dict(N=10, maxConsecutiveReps=4, randomSeed=0)
stim_selection_options_qp = dict(n=10,
max_consecutive_reps=4,
random_seed=0)
q = QuestPlusHandler(nTrials=20,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
responseVals=response_vals,
psychometricFunc=func,
stimScale=stim_scale,
stimSelectionMethod=stim_selection_method,
stimSelectionOptions=stim_selection_options)
assert q.stimSelectionOptions == stim_selection_options
assert q._qp.stim_selection_options == stim_selection_options_qp
def test_QuesPlusHandler_unused_StairHandler_attribs():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
response_vals = ['Correct', 'Incorrect']
func = 'weibull'
stim_scale = 'linear'
q = QuestPlusHandler(nTrials=20,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
responseVals=response_vals,
psychometricFunc=func,
stimScale=stim_scale)
assert q.currentDirection is None
assert q.stepSizeCurrent is None
assert q.stepType == q.stimScale
def test_QuesPlusHandler_unknown_stimSelectionOptions():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
stim_selection_method = 'minNEntropy'
stim_selection_options = dict(unknownParam=1)
with pytest.raises(ValueError):
q = QuestPlusHandler(nTrials=20,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
stimSelectionMethod=stim_selection_method,
stimSelectionOptions=stim_selection_options)
def test_QuesPlusHandler_invalid_prior_params():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
prior_vals = np.random.randint(low=1, high=10, size=len(thresholds))
prior_vals = prior_vals / prior_vals.sum()
prior = dict(unknownParam=prior_vals)
with pytest.raises(ValueError):
q = QuestPlusHandler(nTrials=20,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
prior=prior)
def test_QuesPlusHandler_unknown_kwargs():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
response_vals = ['Correct', 'Incorrect']
func = 'weibull'
unknown_kwargs = dict(foo=1, bar='baz')
with pytest.warns(RuntimeWarning):
QuestPlusHandler(nTrials=20,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
responseVals=response_vals,
psychometricFunc=func,
**unknown_kwargs)
def test_QuestPlusHandler_saveAsJson():
import sys
if not (sys.version_info.major == 3 and sys.version_info.minor >= 6):
pytest.skip('QUEST+ only works on Python 3.6+')
from psychopy.data.staircase import QuestPlusHandler
thresholds = np.arange(-40, 0 + 1)
slope, guess, lapse = 3.5, 0.5, 0.02
contrasts = thresholds.copy()
response_vals = ['Correct', 'Incorrect']
scale = 'dB'
stim_selection_method = 'minEntropy'
param_estimation_method = 'mode'
func = 'weibull'
q = QuestPlusHandler(nTrials=20,
intensityVals=contrasts,
thresholdVals=thresholds,
slopeVals=slope,
lowerAsymptoteVals=guess,
lapseRateVals=lapse,
responseVals=response_vals,
psychometricFunc=func,
stimSelectionMethod=stim_selection_method,
stimScale=scale,
paramEstimationMethod=param_estimation_method)
q.origin = ''
# Add some random responses.
q.__next__()
q.addResponse(response='Correct')
q.__next__()
q.addResponse(response='Incorrect')
# Test dump to memory.
q.saveAsJson()
# Test dump to file.
temp_dir = mkdtemp(prefix='psychopy-tests-testdata')
_, path = mkstemp(dir=temp_dir, suffix='.json')
q.saveAsJson(fileName=path, fileCollisionMethod='overwrite')
# Test loading from file.
q_loaded = fromFile(path)
assert q == q_loaded
# Check if it still works afterwards.
q.addResponse(response='Correct')
shutil.rmtree(temp_dir)