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# Test methods with long descriptive names can omit docstrings
# pylint: disable=missing-docstring
import unittest
from Orange.data import Table
from Orange.preprocess import ProjectPCA
from Orange.tests import test_filename
class TestPCAProjector(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.ionosphere = Table(test_filename("datasets/ionosphere.tab"))
def test_project_pca_default(self):
data = self.ionosphere
projector = ProjectPCA()
data_pc = projector(data)
self.assertEqual(data_pc.X.shape[1], data.X.shape[1])
self.assertTrue((data.metas == data_pc.metas).all())
self.assertTrue((data.Y == data_pc.Y).any())
def test_project_pca(self):
data = self.ionosphere
projector = ProjectPCA(n_components=5)
data_pc = projector(data)
self.assertEqual(data_pc.X.shape[1], 5)
self.assertTrue((data.metas == data_pc.metas).all())
self.assertTrue((data.Y == data_pc.Y).any())
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