Method block

numpy/core/tests/test_shape_base.py:519–542

(self, request)

class TestBlock:
    @pytest.fixture(params=['block', 'force_concatenate', 'force_slicing'])
    def block(self, request):
        # blocking small arrays and large arrays go through different paths.
        # the algorithm is triggered depending on the number of element
        # copies required.
        # We define a test fixture that forces most tests to go through
        # both code paths.
        # Ultimately, this should be removed if a single algorithm is found
        # to be faster for both small and large arrays.
        def _block_force_concatenate(arrays):
            arrays, list_ndim, result_ndim, _ = _block_setup(arrays)
            return _block_concatenate(arrays, list_ndim, result_ndim)

        def _block_force_slicing(arrays):
            arrays, list_ndim, result_ndim, _ = _block_setup(arrays)
            return _block_slicing(arrays, list_ndim, result_ndim)

        if request.param == 'force_concatenate':
            return _block_force_concatenate
        elif request.param == 'force_slicing':
            return _block_force_slicing
        elif request.param == 'block':
            return block
        else:
            raise ValueError('Unknown blocking request. There is a typo in the tests.')

    def test_returns_copy(self, block):
        a = np.eye(3)