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# pylint: disable=protected-access
import unittest
import collections
from itertools import count
from unittest.mock import patch
import numpy as np
from AnyQt.QtWidgets import QMenu
from AnyQt.QtGui import QStandardItem
from AnyQt.QtCore import QPoint, Qt
import Orange
from Orange.evaluation.scoring import Score, AUC, CA, F1, Specificity
from Orange.widgets.evaluate.utils import ScoreTable, usable_scorers
from Orange.widgets.tests.base import GuiTest
from Orange.data import Table, DiscreteVariable, ContinuousVariable
from Orange.evaluation import scoring
class TestUsableScorers(unittest.TestCase):
def setUp(self):
self.iris = Table("iris")
self.housing = Table("housing")
self.registered_scorers = set(scoring.Score.registry.values())
def validate_scorer_candidates(self, scorers, class_type):
# scorer candidates are (a proper) subset of registered scorers
self.assertTrue(set(scorers) < self.registered_scorers)
# all scorers are adequate
self.assertTrue(all(class_type in scorer.class_types
for scorer in scorers))
# scorers are sorted
self.assertTrue(all(s1.priority <= s2.priority
for s1, s2 in zip(scorers, scorers[1:])))
def test_usable_scores(self):
self.validate_scorer_candidates(
usable_scorers(self.iris.domain), class_type=DiscreteVariable)
self.validate_scorer_candidates(
usable_scorers(self.housing.domain), class_type=ContinuousVariable)
class TestScoreTable(GuiTest):
def setUp(self):
class NewScore(Score):
name = "new score"
self.NewScore = NewScore # pylint: disable=invalid-name
self.orig_hints = ScoreTable.show_score_hints
hints = ScoreTable.show_score_hints = self.orig_hints.default.copy()
hints.update(dict(F1=True, CA=False, AUC=True, Recall=True,
Specificity=False, NewScore=True))
self.score_table = ScoreTable(None)
self.score_table.update_header([F1, CA, AUC, Specificity, NewScore])
def tearDown(self):
ScoreTable.show_score_hints = self.orig_hints
del Score.registry["NewScore"]
def test_show_column_chooser(self):
hints = ScoreTable.show_score_hints
actions = collections.OrderedDict()
menu_add_action = QMenu.addAction
def addAction(menu, a):
action = menu_add_action(menu, a)
actions[a] = action
return action
def execmenu(*_):
# pylint: disable=unsubscriptable-object,unsupported-assignment-operation
scorers = [F1, CA, AUC, Specificity, self.NewScore]
self.assertEqual(list(actions)[3:], ['F1',
'Classification accuracy (CA)',
'Area under ROC curve (AUC)',
'Specificity (Spec)',
'new score'])
header = self.score_table.view.horizontalHeader()
for i, action, scorer in zip(count(), list(actions.values())[3:], scorers):
self.assertEqual(action.isChecked(),
hints[scorer.__name__],
msg=f"error in section {scorer.name}")
self.assertEqual(header.isSectionHidden(3 + i),
not hints[scorer.__name__],
msg=f"error in section {scorer.name}")
actions["Classification accuracy (CA)"].triggered.emit(True)
hints["CA"] = True
for k, v in hints.items():
self.assertEqual(self.score_table.show_score_hints[k], v,
msg=f"error at {k}")
actions["Area under ROC curve (AUC)"].triggered.emit(False)
hints["AUC"] = False
for k, v in hints.items():
self.assertEqual(self.score_table.show_score_hints[k], v,
msg=f"error at {k}")
# We must patch `QMenu.exec` because the Qt would otherwise (invisibly)
# show the popup and wait for the user.
# Assertions are made within `menuexec` since they check the
# instances of `QAction`, which are invalid (destroyed by Qt?) after
# `menuexec` finishes.
with patch("AnyQt.QtWidgets.QMenu.addAction", addAction), \
patch("AnyQt.QtWidgets.QMenu.exec", execmenu):
self.score_table.view.horizontalHeader().show_column_chooser(QPoint(0, 0))
def test_sorting(self):
def order(n=5):
return "".join(model.index(i, 0).data() for i in range(n))
score_table = ScoreTable(None)
data = [
["D", 11.0, 15.3],
["C", 5.0, -15.4],
["b", 20.0, np.nan],
["A", None, None],
["E", "", 0.0]
]
for data_row in data:
row = []
for x in data_row:
item = QStandardItem()
if x is not None:
item.setData(x, Qt.DisplayRole)
row.append(item)
score_table.model.appendRow(row)
model = score_table.view.model()
model.sort(0, Qt.AscendingOrder)
self.assertEqual(order(), "AbCDE")
model.sort(0, Qt.DescendingOrder)
self.assertEqual(order(), "EDCbA")
model.sort(1, Qt.AscendingOrder)
self.assertEqual(order(3), "CDb")
model.sort(1, Qt.DescendingOrder)
self.assertEqual(order(3), "bDC")
model.sort(2, Qt.AscendingOrder)
self.assertEqual(order(3), "CED")
model.sort(2, Qt.DescendingOrder)
self.assertEqual(order(3), "DEC")
def test_shown_scores_backward_compatibility(self):
self.assertEqual(self.score_table.shown_scores,
{"F1", "AUC", "new score"})
def test_migration(self):
settings = dict(foo=False, shown_scores={"Sensitivity"})
ScoreTable.migrate_to_show_scores_hints(settings)
self.assertTrue(settings["show_score_hints"]["Sensitivity"])
if __name__ == "__main__":
unittest.main()
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