Source code for ndcube.tests.helpers
# -*- coding: utf-8 -*-
"""
Helpers for testing ndcube.
"""
import unittest
import numpy as np
from ndcube import utils
__all__ = ['assert_extra_coords_equal',
'assert_metas_equal',
'assert_cubes_equal',
'assert_cubesequences_equal',
'assert_wcs_are_equal']
[docs]def assert_cubes_equal(test_input, expected_cube):
unit_tester = unittest.TestCase()
assert type(test_input) == type(expected_cube)
assert np.all(test_input.mask == expected_cube.mask)
assert_wcs_are_equal(test_input.wcs, expected_cube.wcs)
assert test_input.missing_axis == expected_cube.missing_axis
assert test_input.uncertainty.array.shape == expected_cube.uncertainty.array.shape
assert test_input.world_axis_physical_types == expected_cube.world_axis_physical_types
assert all(test_input.dimensions.value == expected_cube.dimensions.value)
assert test_input.dimensions.unit == expected_cube.dimensions.unit
assert_extra_coords_equal(test_input.extra_coords, expected_cube.extra_coords)
[docs]def assert_cubesequences_equal(test_input, expected_sequence):
assert type(test_input) == type(expected_sequence)
assert_metas_equal(test_input.meta, expected_sequence.meta)
assert test_input._common_axis == expected_sequence._common_axis
for i, cube in enumerate(test_input.data):
assert_cubes_equal(cube, expected_sequence.data[i])
[docs]def assert_wcs_are_equal(wcs1, wcs2):
"""
Assert function for testing two wcs object.
Used in testing NDCube.
"""
assert list(wcs1.wcs.ctype) == list(wcs2.wcs.ctype)
assert list(wcs1.wcs.crval) == list(wcs2.wcs.crval)
assert list(wcs1.wcs.crpix) == list(wcs2.wcs.crpix)
assert list(wcs1.wcs.cdelt) == list(wcs2.wcs.cdelt)
assert list(wcs1.wcs.cunit) == list(wcs2.wcs.cunit)
assert wcs1.wcs.naxis == wcs2.wcs.naxis