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''' Tests for byteorder module '''
import sys
import numpy as np
from numpy.testing import assert_raises
import scipy.io.matlab.byteordercodes as sibc
def test_native():
native_is_le = sys.byteorder == 'little'
assert sibc.sys_is_le == native_is_le
def test_to_numpy():
if sys.byteorder == 'little':
assert sibc.to_numpy_code('native') == '<'
assert sibc.to_numpy_code('swapped') == '>'
else:
assert sibc.to_numpy_code('native') == '>'
assert sibc.to_numpy_code('swapped') == '<'
assert sibc.to_numpy_code('native') == sibc.to_numpy_code('=')
assert sibc.to_numpy_code('big') == '>'
for code in ('little', '<', 'l', 'L', 'le'):
assert sibc.to_numpy_code(code) == '<'
for code in ('big', '>', 'b', 'B', 'be'):
assert sibc.to_numpy_code(code) == '>'
assert_raises(ValueError, sibc.to_numpy_code, 'silly string')
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