Method test_compressed

numpy/ma/tests/test_core.py:4885–4919

(self)

        assert_equal(test, control)

    def test_compressed(self):
        # Test ma.compressed function.
        # Address gh-4026
        a = np.ma.array([1, 2])
        test = np.ma.compressed(a)
        assert_(type(test) is np.ndarray)

        # Test case when input data is ndarray subclass
        class A(np.ndarray):
            pass

        a = np.ma.array(A(shape=0))
        test = np.ma.compressed(a)
        assert_(type(test) is A)

        # Test that compress flattens
        test = np.ma.compressed([[1],[2]])
        assert_equal(test.ndim, 1)
        test = np.ma.compressed([[[[[1]]]]])
        assert_equal(test.ndim, 1)

        # Test case when input is MaskedArray subclass
        class M(MaskedArray):
            pass

        test = np.ma.compressed(M([[[]], [[]]]))
        assert_equal(test.ndim, 1)

        # with .compressed() overridden
        class M(MaskedArray):
            def compressed(self):
                return 42

        test = np.ma.compressed(M([[[]], [[]]]))
        assert_equal(test, 42)

    def test_convolve(self):
        a = masked_equal(np.arange(5), 2)