| # Copyright (c) Microsoft Corporation. All rights reserved. | |
| # Licensed under the MIT License. | |
| import pytest | |
| from fairlearn.postprocessing._threshold_operation import ThresholdOperation | |
| def test_predict_from_operation_less(): | |
| classifier = ThresholdOperation('<', 0.5).get_predictor_from_operation() | |
| assert classifier(-10000) == 1 | |
| assert classifier(0) == 1 | |
| assert classifier(0.5) == 0 | |
| assert classifier(1) == 0 | |
| assert classifier(10000) == 0 | |
| def test_predict_from_operation_more(): | |
| classifier = ThresholdOperation('>', 0.5).get_predictor_from_operation() | |
| assert classifier(-10000) == 0 | |
| assert classifier(0) == 0 | |
| assert classifier(0.5) == 0 | |
| assert classifier(1) == 1 | |
| assert classifier(10000) == 1 | |
| def test_predict_from_operation_invalid_operator(): | |
| with pytest.raises(ValueError, match="Unrecognized operator: ="): | |
| ThresholdOperation('=', 0.5) | |