2223c288a6d5d4e7a9fb7305dc840b9910b7f679,Orange/tests/test_pca.py,TestPCA,test_chain,#TestPCA#,107

Before Change

        self.assertIsNone(pca_iris2.domain[0].compute_value.transformed)

    def test_chain(self):
        zoo = Table("zoo")
        zoo_c = Continuize(zoo)
        pca = PCA(n_components=3)(zoo_c)(zoo)
        pca2 = PCA(n_components=3)(zoo_c)(zoo_c)
        pca3 = PCA(n_components=3, preprocessors=[Continuize()])(zoo)(zoo)

After Change

        zoo_c = Continuize(self.zoo)
        pca = PCA(n_components=3)(zoo_c)(self.zoo)
        pca2 = PCA(n_components=3)(zoo_c)(zoo_c)
        pp = [Continuize()]
        pca3 = PCA(n_components=3, preprocessors=pp)(self.zoo)(self.zoo)
        np.testing.assert_almost_equal(pca.X, pca2.X)
        np.testing.assert_almost_equal(pca.X, pca3.X)

Instances